Question 25
.........................................................
Answer:
its c
Step-by-step explanation:
15POINTS! please help!
Answer: (71,19)
Step-by-step explanation:
x + y =90
x=14 + 3y or -1x +3y=-14
solve by elimination. 1x + 1y= 90
-1 +3y = -14 y=19
1x + 1(19)=90
x=71
Answer:
x + y = 90
x = 14 + 3y
The numbers are 71 and 19.
Step-by-step explanation:
Let the larger number be x.
Let the smaller number be y.
The sum of the numbers is 90.
x + y = 90
The larger number, x, is 14 more than 3 times the smaller number, y.
x = 14 + 3y
We have a system of two equations in two unknowns.
x + y = 90
x = 14 + 3y
Since the second equation is already solved for x, we will use the substitution method to solve the system of equations.
Substitute x in the first equation with 14 + 3y.
x + y = 90; x = 14 + 3y
14 + 3y + y = 90
Combine like terms on the left side.
4y + 14 = 90
Subtract 14 from both sides.
4y = 76
Divide both sides by 4.
y = 19
The smaller number is 19.
Now we substitute 19 for y in the first equation and solve for x.
x + y = 90; y = 19
x + 19 = 90
Subtract 19 from both sides.
x = 71
The larger number is 71.
Answer: The numbers are 71 and 19.
Use the Distributive Property to write an expression equivalent to 4(p-12).
Answer:
4p - 48
Step-by-step explanation:
(4 × p) + (4 × 12)
I hope this helps!
Answer:
4p - 48
Step-by-step explanation:
(4 × p) + (4 × 12)
3a + 2 - 5a = -14. Can someone solve this for me.
Answer:
a = 8
Step-by-step explanation:
-2a + 2 = -14
-2a = -16
-16/-2 = 8
a = 8
Answer:
a=8
Step-by-step explanation:
3a + 2 - 5a = -14
Combine like terms
-2a +2 = -14
Subtract 2 from each side
-2a +2-2 = -14-2
-2a = -16
Divide each side by -2
-2a/-2 = -16/-2
a = 8
Select all the equations that are equivalent to the given equation. 1/5 (t + 2) = 5/6
1/5 t + 2/5 = 5/6
1/5 t = 7/10
1/5 t + 7 = 5/6
t = 2 1/6
t = 3 1/2
plz this question is worth 50 ponits
Answer:
t = 2 1/6
1/5 t + 2/5 = 5/6
Step-by-step explanation:
1/5 (t + 2) = 5/6
Multiply each side by 5
t+2 = 5*5/6
t+2 = 25/6
Subtract 2 from each side
t+2 -2 = 25/6 -12/6 ( using the same denominator)
t = 13/6 = 2 1/6
We can also distribute
1/5 t + 2/5 = 5/6
Subtract 2/5 from each side
1/5t = 5/6 -2/5
Get a common denominator
1/5t =25/30 - 12/30
1/5t = 13/30
Multiply each side by 5
t = 13/30 *5
t = 13/6
ANSWER : t = 2 1/6
1/5 t + 2/5 = 5/6
Step-by-step explanation:
1/5 (t + 2) = 5/6
Multiply each side by 5
t+2 = 5*5/6
t+2 = 25/6
Subtract 2 from each side
t+2 -2 = 25/6 -12/6
t = 13/6 = 2 1/6
We can distribute
1/5 t + 2/5 = 5/6
Subtract 2/5 from each side
1/5t = 5/6 -2/5
Get common denominator
1/5t =25/30 - 12/30
1/5t = 13/30
Multiply each side by 5
t = 13/30 *5
t = 13/6
The temperature at night reached -13 °F. Write an equivalent statement about the temperature using the absolute value of the number.
Answer:
The temperature at night changed by 13°
Step-by-step explanation:
How many girls played for the Newcastle T-ball team?
Question 39 options:
14
13
16
10
please help me thank you!
What is the measure of angle x
Answer:
x =83
Step-by-step explanation:
supplementary angles add to 180 degrees
x+y = 180
We know y is 97
x+97= 180
Subtract 97 from each side
x+97-97= 180-97
x =83
Answer:
It is 83
Step-by-step explanation:
Supplementary is 180 degrees
180-97=83
If Catherine traveled 1,800 miles in 6 hours on her plane flight to her vacation destination, how fast was the plane traveling?
Answer:
So the plane drobe 1800 miles in 6 hours.
to find the time to plane was traveling per hour, we divide 1800 by 6 geting us with 300. THe plane traveled 300 miles per hour
Step-by-step explanation:
Answer:
300 mph
Step-by-step explanation:
[tex]Speed \: of \: plane \\ = \frac{distance}{time} \\ = \frac{1800}{6} \\ = 300 \: mph[/tex]
Thus plane was travelling at 300 miles per hour speed.
Suppose (12, 8) and (4, 6) are the endpoints of a diameter of a circle. Which is an equation of the circle?
Answer:
[tex](x-8)^2 + (y-7)^2 - 17 = 0[/tex]
Step-by-step explanation:
The formula for the equation of a circle is:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
where (h,k) is the center and r is the radius of the circle.
To first solve solve this, use the endpoints of the diameter to solve for the center of the circle using the midpoint formula, which is known as:
[tex]\frac{(x_1+x_2)}{2},\frac{(y_1+y_2)\ }{2}[/tex]
The points given are (12,8) and (4,6), so plug in the coordinates into the formula.
Center = (1/2)(12+4),(1/2)(8+6)
= (8,7)
Now, to find the radius, we can use the distance formula and use the center (8,7) and one of the endpoints, (12,8). The distance formula is known as:
[tex]\sqrt{(x_{1} -x_{2})^2 +(y_{1} -y_{2})^2 }[/tex]
Radius = √(x₂- x₁)² + (y₂-y₁)²
= √(12- 8)² + (8-7)²
= √(4² + 1²) = √(16+ 1) = √17
= r² = 17
Now that the radius and the center are known, the equation of the circle can be written as:
[tex](x-8)^2 + (y-7)^2 - 17 = 0[/tex]
Write a problem that could be modeled with y = 200(0.9)^x
Answer:
Step-by-step explanation:
A new TV sells for $200. Every year, the TV loses 10% of the initial value.
05.01 MC)
Determine the equation of the line with slope −2 that passes through the point M(−1, −3). (5 points)
Question 2 options:
1)
2x + y = −5
2)
2x − y = −5
3)
x − 2y = 5
4)
x − 2y = −5
Answer:
2x + y = -5 (which is Answer 1).
Step-by-step explanation:
The possible answer choices are all versions of the standard equation of a straight line: Ax + By + C = 0. If A and B are both positive, as they are here, then the slope is negative and has the form m = -A/B. Only the first answer choice passes here: with +2x and +1y, the slope is -2. This automatically eliminates the other possibilities.
Looking at the first answer choice, we see that A must be 2 and B must be 1
so that the slope is m = -2. Writing out this equation: Ax + By + C = 0.
Replace A with 2 and B with 1: 2x + y + C = 0.
Finally, replace x with -1 and y with -3: 2(-1) + (-3) + C = 0.
Solving this for C, we get -2 - 3 + C = 0, or -5 + C = 0, or C = 5.
We end up with 2x + y = -5 (which is Answer 1).
4 cm
8.5 cm
What’s the area ?
Answer:
34 square cm.
Step-by-step explanation:
I am assuming by the number of measurements given that the shape is a rectangle.
[tex]\text {Formula for area of a rectangle: }A = w * l[/tex]
With 4 as the width and 8.5 as the length:
[tex]4*8.5 = 34[/tex]
The rectangle should be [tex]34cm^2.[/tex]
What is the probability of spinning red on the image shown?
Answer:
37.5%
Step-by-step explanation:
Red is 3/8 so you convert that into a percentage.
Find the length of the base of the following pyramid, given the height of the pyramid is 221 meters and the angle of elevation of the base of the pyramid is 62°. Round to the nearest whole number.
An image of a square pyramid is shown with a right triangle embedded inside it. The face is at an incline of 62 degrees. The height is labeled 211, and the corner of the right angle is marked with a letter P.
75 meters
189 meters
235 meters
416 meters
Answer:I believe it would be answer choice, 235 meters
Step-by-step explanation:
I’m not super good at explain but, the height and incline both go at the right slope when they interact. Have a good day, hope it helps.
The length of the pyramid's base would be:
C). 235 meters
Find the length of the baseGiven that,
Height of the pyramid [tex]= 221[/tex]
Elevation/angle of the base [tex]= 62[/tex]°
Employing the trigonometric function,
Tan 62 [tex]= 221/[1/2 base][/tex]
⇒ Base [tex]= (2[/tex] × [tex]221)[/tex][tex]/Tan[/tex][tex]62[/tex]
[tex]= 2[/tex] × 221/[tex]1.88[/tex]
[tex]= 235.10[/tex]
Thus, option C is the correct answer.
Learn more about "Angle" here:
brainly.com/question/15767203
Kathy found the volume of the figure using the expression (4 * 3 * 8) + (10 * 3 * 4). Sandy found the volume of the figure using the expression (3 * 10 x 4) + (4 * 3 * 4). Use the drop-down menus to explain who is correct. 10 cm Click the arrows to choose an answer from each menu, The expression for the volume of the figure was correctly determined by Choose... because the figure was divided into two rectangular → prisms that Choose...
Answer:
The correct options are;
1) Sandy is correct
2) The figure was divided into two rectangular prisms that are calculated separately
Step-by-step explanation:
Here we have to divide the figure into two rectangular prisms so as not to calculate for a dimension twice
Therefore, the figure can be split into a horizontal prism at the top with dimensions and volume = 10 × 4 × 3 and the vertical prism below will now have a dimension and hence, volume of 4 × 4 × 3
Therefore the volume of the figure is the sum of the volumes of the two prisms found as follows;
Volume of the figure = 10 × 4 × 3 + 4 × 4 × 3 = 168
We can try the othe way to confirm as follows
Volume of the prism below = 4 × 3 × 8 = 96
Volume of the horizontal prism above is now = 4 × 3 × 6 = 72
Volumre of the figure = 96 + 72 = 168
Therefore, since the volume = (10 × 4 × 3) + (4 × 4 × 3), Sandy is correct
Because the figure was divided into two rectangular prisms that are calculated separately.
Answer:
1(sandy is correct)
2(do not overlap
Step-by-step explanation:
What is the volume of a sphere with a diameter of 3.2 m, rounded to the nearest tenth
of a cubic meter?
Answer:
Volume of a sphere = 17.164 m³ (Approx)
Step-by-step explanation:
Given:
Diameter of a sphere = 3.2 m
Radius of a sphere = Diameter / 2 = 3.2 / 2 = 1.6 m
Find:
Volume of a sphere = ?
Computation:
[tex]Volume\ of\ a\ sphere =\frac{4}{3}\pi \times r^3 \\\\Volume\ of\ a\ sphere =\frac{4}{3}\times \frac{22}{7} \times (1.6)^3 \\\\Volume\ of\ a\ sphere =\frac{4}{3}\times \frac{22}{7} \times 4.096\\\\Volume\ of\ a\ sphere =17.164[/tex]
Volume of a sphere = 17.164 m³ (Approx)
Answer:
17.2
Step-by-step explanation:
Which of these is the standard form of the following function?
f(x) = -9(x + 5)2 + 4
f(x) = -9x2 - 90x - 221
AX) = 9x2 - 90x - 221
f(x) = -9x2 – 180x – 221
RX) = 9x2 - 180x + 221
Answer:
A
Step-by-step explanation:
Given
f(x) = - 9(x + 5)² + 4 ← expand parenthesis using FOIL
= - 9(x² + 10x + 25) + 4 ← distribute parenthesis by - 9
= - 9x² - 90x - 225 + 4 ← collect like terms
= - 9x² - 90x - 221 ← in standard form
Answer: Bro write the question better
Step-by-step explanation:
A car wash charges two prices depending on the size of the vehicle. The table shows the number of cars and the number of SUVs washed in the past 3 hours. The total earnings for hours 1 and 2 are given. Each car costs the same price, and each SUV costs the same price. The system of equations can be used to represent the situation.
In the system of equations, x represents the, _____and y represents the_____.
If the system of equations is graphed in a coordinate plane, the coordinates (x, y) of the intersection of the two lines are______.
The total cost of 1 car and 1 SUV is $_____.
The total earnings for hour 3 are $______.
The missing part of the picture is:
4x + 2y = 84
3x + 5y = 126
Answer:
see below
Step-by-step explanation:
In the system of equations, x represents the, price to wash a car and y represents the price to wash an SUV.
If the system of equations is graphed in a coordinate plane, the coordinates (x, y) of the intersection of the two lines are the price of the car wash (x) and the price of the SUV wash (y)______.
x=12 and y = 18
x+y = 12+18 = 30
The total cost of 1 car and 1 SUV is $_30____.
5x+4y = 5(12)+4(18) = 60+ 72 =132
The total earnings for hour 3 are $_132_____.
Answer:
x: cost of 1 car wash
y: cost of each SUV wash
(12,18)
The total cost of 1 car and 1 SUV is $30
The total earnings for hour 3 are $132
Step-by-step explanation:
4x + 2y = 84
y = 42 - 2x
3x + 5y = 126
3x + 210 - 10x = 126
7x = 84
x = 12
y = 42 - 2(12) = 18
1 car and 1 SUV
12 + 18 = 30
For 3 hours:
5x + 4y
5(12) + 4(18)
132
Find the approximate perimeter of the
isosceles triangle APAZ plotted below.
Round your final answer to the nearest
hundredth.
Answer:
20.03
Step-by-step explanation:
To find the perimeter of the triangle, we need to find the length of each side, and we can do this finding the distance from each pair of vertix of the triangle:
Knowing that P = (3, -4), A = (-4, 1) and Z = (-2, 3), we have:
side PZ: distance = sqrt((3 - (-2))^2 + (-4 - 3)^2) = 8.6023
side PA: distance = sqrt((3 - (-4))^2 + (-4 - 1)^2) = 8.6023
side AZ: distance = sqrt((-4 - (-2))^2 + (1 - 3)^2) = 2.8284
So the perimeter is PZ + PA + AZ = 8.6023 + 8.6023 + 2.8284 = 20.03
As of 2008 the worlds population was about 6.7 billion people. The population of the United States in 2008 was 305 million. In 2008 what percent of the world’s population was the US population?
Answer:
In 2008 the US population was 4.55% of the world population.
Step-by-step explanation:
In order to calculate the percent of the world population that represents the US population, we can apply a rule of three in such a way that the world population is related to 100% in the same proportion that the US population is related to x%. We then solve for x. This is shown below:
6.7*10^9 -> 100%
305*10^6 -> x%
6.7*10^9 / 305*10 ^6 = 100 / x
6.7*10^3 / 305 = 100 / x
(6.7*10^3)*x = 305*100
x = 30500 / (6.7*10^3)
x = 4,55 %
In 2008 the US population was 4.55% of the world population.
Answer: 6.76 109
Step-by-step explanation:
Goodbye Brainly, goodbye everyone I started using this when I started my new geometry class about 5 months ago but I finished yesterday so I no longer need to use this had fun and without this I probably would of failed its unlikely that ill use this next year peace..
Answer:
bye have fun
Step-by-step explanation:
Solve the quadratic equation.
2x2 − 11x − 21 = 0
A) −
3
2
and 7
B)
3
2
and −7
C) −
2
3
and
1
7
D)
2
3
and −
1
7
Answer:
A) -3/2 and 7
Step-by-step explanation:
this equation factors to (2x+3)(x-7)
the goal is to solve for 0
if 2x+3=0 then x=-3/2
if x-7=0 then x=7
Help me please help me helpm
Answer:
[tex]g(x) = {(x + 9)}^{2} [/tex]
Oscar and Stella go birdwatching. Oscar sees 7 birds. Stella sees 28 birds. How many times as many birds as Oscar does Stella See? Which bar model represents the problem???
Answer:
4 times as many birds
Step-by-step explanation:
28 divided by 7 = 4
Answer:
it will be 4
Step-by-step explanation:
because, i divied 28 by 7 = 4
What is the constant of proportionality between y and x in the graph
Answer:
I think its 2
Step-by-step explanation:
I counted by ones and then i found that the pint is between 4 and 2 so when i divided 4 by 2 and i got 2
Hope this helps Ask if i am wrong Brainliest plzConsider a single spin of the spinner.
Which events are mutually exclusive? Choose all that apply.
a
landing on an unshaded sector and landing on a number less than 2
b
landing on a shaded sector and landing on a 3
c
landing on an unshaded portion and landing on an odd number
d
landing on a shaded sector and landing on an even number
e
landing on a shaded sector and landing on a number greater than 3
The question is incomplete
Find attached to the question, the appropriate diagram
Answer:
a) landing on an unshaded sector and landing on a number less than 2
b) landing on a shaded sector and landing on a 3
Step-by-step explanation:
Mutually exclusive events are two events that can occur separately on their own but they cannot occur together or at the same time.
The options given are explained below:
We have two shaded sectors: 1 and 4
We have two unshaded sectors : 2 and 3
a) landing on an unshaded sector and landing on a number less than 2
Looking at option a, we find out that it is possible for the spinners to land on an unshaded sector separately likewise on a number less than 2 but it cannot land on an unshaded sector AND and number less than 2 because looking at the spinner, the numbers on the unshaded sectors are 2 ( is equal to two) and 3 ( which is above 2).
Therefore this option is mutually exclusive and correct.
b) landing on a shaded sector and landing on a 3
It is possible to land on a shaded sector likewise it is possible to land on a 3 but it is not possible to land on a shaded sector and land on a 3 at the same time.
This is because, the number on the shaded sector is 1 and 4 and the number on the unshaded sector is 2 and 3, we have only one spinner so the spinner can only land on one sector at a time.
Therefore, Option b is a mutually exclusive event and it is a correct option.
c) landing on an unshaded portion and landing on an odd number
The unshaded portion on the spinner has number 2 and 3 on them, therefore it is possible to land on an unshaded portion and odd number which is 3 at the same time.
Option c is not a mutually inclusive event and it is wrong.
d) landing on a shaded sector and landing on an even number
The shaded sector on the spinner has number 1 and 4 on them, therefore it is possible to land on an shaded sector and even number which is 4 at the same time.
Option d is not a mutually inclusive event and it is wrong.
e)landing on a shaded sector and landing on a number greater than 3
The shaded sector on the spinner has number 1 and 4 on them, therefore it is possible to land on an shaded sector and a number greater than 3 which is 4 at the same time.
Option e is not a mutually inclusive event and it is wrong.
Therefore, option a and option b are mutually exclusive events and they are correct.
Answer:
a. landing on an unshaded sector and landing on a number less than 2
e landing on a shaded sector and landing on a number greater than 3
Step-by-step explanation:
Two events ; for example events A and B are said to be mutually exclusive , if they cannot both occur simultaneously.In set theoretical notation , we say that the two sets A and B are disjoint set.
i.e
A ∩ B = ∅
Pr (A ∩ B) = 0
The intersection of A and B is an empty set and as such there is no intersection.
From the given options; option a and e are correct because ;
a.
landing on an unshaded sector and landing on a number less than 2
Landing on an unshaded portion would 2 or 3.
Landing on a number less than 2 would be 1.
There is no intersection and as such these events are mutually exclusive.
e.
landing on a shaded sector and landing on a number greater than 3
Landing on a shaded portion would be 1 or 4.
Landing on a number greater than 3 would be just 4.
The intersection of both events will be an empty set (∅)
As such these events are not mutually exclusive.
Convert 400° to radians.
O 40π/9
O 8π/3
O 20π/9
O 23π/6
Option c)20π /9
360 deg -->
2
π
1 deg -->
2
π
360
400 deg -->
800
π
360
=
20
π
9
i am doing alot of these brainliest ans for best 1
Answer:
same here buddy lol. 2,4,6
Step-by-step explanation:
Answer:
Yep. 2,4,6
Step-by-step explanation:
Terrence graphs the two equations below on the same coordinate plane.
y = 2x + 4
y = -x + 1
At what point do the graphs of the equations intersect?
Answer:
(-1, 2) is the point of intersection!
Step-by-step explanation:
Checked on a calulator
Answer:
(-1, 2) is the answer to this question
Step-by-step explanation:
Hope this helps!
Have a great day! :)
