Answer:
62 strides per minute
Step-by-step explanation:
Paula was on the treadmill for 14 minutes and had a total of 868 strides
To find her rate in strides per minute, we divide the strides by the minutes
868/14 = 62
Therefore, her rate in strides per minutes is 62 strides per minute
Hope this helped!
If you answer 9 questions incorrectly on your science test you will earn a score of 70%. How many total
questions are on the test?
Answer:
30 questions on the test
Step-by-step explanation:
Question 3
The expression x^2- 8x + 21 can be written in the form (x - a)^2+ b for all values of x
(a) Find the value of a and the value of b.
Answer:
a = 4, b = 5
Step-by-step explanation:
x² - 8x + 21
Using the method of completing the square
add/subtract ( half the coefficient of the x- term )² to x² - 8x
x² + 2(- 4)x + 16 - 16 + 21
= (x - 4)² + 5 ← in the form (x - a)² + b
with a = 4 and b = 5
I really need help thank u
Answer:
those are the answers
Step-by-step explanation:
so basically you multiply the top number by the number in the side like: -3x^2 × 3x, -3x^2 × -5 (if that makes sense?)
I need help with this question for math. I would love for some help thank you.
Answer:
y= -3x+1
Step-by-step explanation:
Let's start with the y-intercept (initial value). The y-intercept is where the line intersects the y-axis, so the x value should be 0. Here, the y-intercept is (0,1).
The slope is equivalent to the rise over run. We rise three and go to the left 1 which gives us a slope of negative 3 since we went to the left instead of the right.
Equation for a line:
y=mx+b where m is the slope and b is the y-intercept.
We plug in the slope and y-intercept in and get...
y= -3x+1
Answer:
slope: -3initial value: 1equation: y = -3x +1partial variationStep-by-step explanation:
Slope
To find the slope of the line, it is useful to find two grid intersections that the line passes through. If one of those is on the y-axis, that is a good place to start. Here, that one is (0, 1).
Another can be see up and to the left, at (-1, 4).
The slope formula can be used to find the slope between these points:
m = (y2 -y1)/(x2 -x1)
m = (4 -1)/(-1 -0) = 3/-1 = -3
The slope of the line is -3.
__
Initial value:
This is the value that the function has when x=0. It is the y-intercept. We identified that value in the previous section as 1.
The initial value is 1.
__
Equation:
The slope-intercept equation of the line is of the form ...
y = mx + b . . . . . . . where m is the slope (-3) and b is the y-intercept (1).
Filling in the values we know, the equation is ...
y = -3x +1
__
Variation:
The line represents "direct variation" only if the y-intercept is zero. That is, the equation will be of the form ...
y = kx
with no added constant. The value "k" is called the constant of proportionality, or "rate of change."
You will notice the equation for the line on this graph has a y-intercept of 1, so does not represent direct variation. Of the two answer choices, the appropriate one is ...
Partial Variation
x:y =5:3 and x+y =56 work out the value of x-y
Joel wanted to buy some games and controllers for his Playstation 4. He bugs 2 games and 3
controllers for $242 Omar bought 4 games and 1 controller for $281.50. How much are games and
how much are controllers?
Answer:
I think the games r 50$ a piece a d the controllers r 81$
The number of games are 60.25 and number of controllers are 40.5.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that Joel wanted to buy some games and controllers for his Playstation 4.
Let x be number of games and y be the number of controllers.
Joel bugs 2 games and 3 controllers for $242
2x+3y=242..(1)
Omar bought 4 games and 1 controller for $281.50.
4x+y=281.5...(2)
Multiply equation 1 with 2.
4x+6y=484..(3)
Subtract 3 from equation 2.
4x+y-4x-6y=281.5-484
-5y=-202.5
Divide both sides by 5
y=40.5
Now plug in y value in equation 1
2x+3(40.5)=242
2x+121.5=242
2x=242-121.5
2x=120.5
Divide both sides by 2
x=60.25
Hence, the number of games are 60.25 and number of controllers are 40.5.
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Solve the system
2x — бу = 9,
— 3х + 9 = — 15.
Answer:
This system has no solutions.
Dani picked some red flowers and 9 pink flowers for a total of
21 flowers. Then Dani gave Will 5 red flowers. How many red
flowers does Dani have left?
Determine the area of each circle need to use 3.14 for pi and round to the nearest tenth
Answer:
2461.8 in2
Step-by-step explanation:
To find area of a circle, we use the formula pi multiplied by radius, multiplied by radius. As we can see from the diagram, the radius of the circle is 28 inches. Now we find the area.
3.14 x 28 in x 28 in = 2461.76 in2
Now we round the area to the nearest tenth.
2461.76 in2~ 2461.8 in2
Therefore the answer is 2461.8 in2.
sorry if i get it wrong, I don't usually do american maths.
Determine the equation of the line shown in the graph:
Answer:
x=3
Line passes through 3 on the x-axis.
WILL GIVE SOMEONE BRAINLIEST FOR THE RIGHT ANSWERS
A parachutist's rate during a free fall reaches 132 feet per second. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during 2 seconds of free fall? In your computations, assume that 1 meter is equal to 3.3 feet. Do not round your answers.
What is the RATE?
What is the DISTANCE FALLEN IN 2 SECONDS?
Rate: ? m/s
Distance Fallen in 2 Seconds: ? m
Answer:
40 meters
80 meters
Step-by-step explanation:
132-ft) x (1 meter/3.3-ft) = 40 meters
132 ft/sec = 40 m/s
Distance = (speed) x (time)
= (40 m/s) x (2sec) = 80meters
.......................................
Answer:
k = - 7/3Step-by-step explanation:
The given expression is the sum of three non-negative expressions. The square is zero or positive, the absolute value is zero or positive.
Since the sum is zero, each of the expressions should equal zero:
2x + 5y - 7 = 0 4x - 2y = 05x - 1/2y + k = 0From the first 2 equations we get:
4x = 2y ⇒ y = 2x2x + 5(2x) = 712x = 7x = 7/12Find the value of y:
y = 2x= 2*7/12 = 7/6Substitute the values into third equation and find the value of k:
5x - 1/2y + k = 05*7/12 - 1/2(7/6) + k = 035/12 - 7/12 = - k28/12 = - k7/3 = - kk = - 7/3A building has two sizes of apartments, small and regular. The ratio of small
apartments to regular apartments is 16 to 4. What percent of apartments in the
building are small?
The answer is in the picture.
I hope this helped
The percentage of apartments in the building are that are small is 80%.
What is Percentage?Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.
So the percentage actually means a part per 100.
Percentage is usually denoted by the symbol '%'.
Given that,
The ratio of small apartments to regular apartments is 16 to 4.
Total apartments = 16 + 4 = 20
Number of small apartments = 16
Number of regular apartments = 4
Percentage of small apartments = (16 / 20) × 100
= 0.8 × 100
= 80%
Hence 80% of the apartments are small.
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x and y intercepts for
1) 2x+6y=18
2)4x-6y=9
Answer:
FOr the first one the x intercept is 9 and the y intercept is -3
Step-by-step explanation:
hope this helps somewhat
Please do any of these if you know right triangles.
Answer:
#4= C
#3= B
#1= A
Step-by-step explanation:
im not positive that these are correct
During game 3 of the basketball championships, San Antonio scored 97 points consisting of 2-point and 3-point baskets. If San Antonio made a total of 45 baskets, how many of each type did they make?
Answer:
look at the pictures
Step-by-step explanation:
water is drained from a tank at a rate of 25 liters per minutes
Answer: Why are all the amount of points on questions that people have no idea what to even type.
Step-by-step explanation:
4) If 6x -1 = 29, what is the value of x² + x?
A. 29
B. 31
C. 60
D. 30
Answer:D 30
Step-by-step explanation:
6x-1=29
x=5
5^2=25 25+5=30
So the answer is D 30
Can any guide me to the right answer? It’s not 48 or 48.5
59.8
h = height of girl
cos 39 = adjacent (h) /hypotenuse (77 in)
h = 77 cos 39
h = 59.8 in
You used sin instead of cosine, notice that the angle is placed on the top corner, meaning her height is the length adjacent to the angle, not opposite.
F(x)=2x2+X-3 and g(x)= x-1
solve (f•g)(x)
Answer:
(f•g)(x) = 2x² - 3x - 2
Step-by-step explanation:
f(x) = 2x² + x - 3
g(x) = x - 1
(f•g)(x) = 2( x - 1 )² + ( x - 1 ) - 3 = 2x² - 4x + 2 + x - 1 - 3 = 2x² - 3x - 2
(f•g)(x) = 2x² - 3x - 2
At 10:00 am, here's what we know about two airplanes: Airplane #1 has an elevation of 33510 ft. and is
descending at the rate of 750 ft/min. Airplane #2 has an elevation of 13980 ft. and is climbing at the rate
of 300 ft/min.
(1) Lett represent the time in minutes since 10:00 am, and let E represent the elevation in feet. Write an
equation for the elevation of each plane in terms of t.
plane #1: E(t)
plane #2: E(t)
(2) At what time will the two airplanes have the same elevation?
ta
minutes after 10:00 am
(3) What is the elevation at that time?
E=
feet
Answer:
Step-by-step explanation:
1. Plane 1: E = 33510 - 750x
Plane 2: E = 13980 + 300x
2. 33510 - 750x = 13980 + 300x
33510 = 13980 + 1050x
19530 = 1050x
18.6 minutes
3. E = 33510 - 750(18.6)
E = 33510 - 13950
E = 19,560 feet
please help i mark you as brainliest
Answer:
c
Step-by-step explanation:
In kite WXYZ, m∠ZWY=41∘ and m∠XYW=11∘.
What is m∠WZY?
Enter your answer in the box.
Applying the properties of a kite, m∠WZY = 128°.
Properties of a KiteThe diagonals of a kite bisect each other perpendicularly.The main diagonal bisects the opposite angles.Given:
m∠ZWY=41∘
m∠XYW=11∘
m∠WZY = (180 - 90 - 41) + (180 - 90 - 11)
m∠WZY = 49 + 79
m∠WZY = 128°
Therefore, applying the properties of a kite, m∠WZY = 128°.
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A parallelogram with the angle of 6 degrees. What are the measures of the other 3 angles in the parallelogram
Answer:
174°, 174°, 6°
Step-by-step explanation:
opposite angles in a parallelogram are congruent, so one of the other angles = 6°
parallelogram = 360°
the other angles in the parallelogram = x
x + x + 6° + 6° = 360°
2x = 348
x = 174°
Check Your Work:
174° + 174° + 6° + 6° = 360°
Let me know if you have any more doubts! :D
6.
Input (x) Output
1
3
2.
7
3
11
Answer: Retype it please
Step-by-step explanation:
Original price of a microphone: $49.99 Discount: 5% Tax: 5%
Answer:
$47.49
Step-by-step explanation:
original price $49.99
discount 5%
49.99 - 5%=47.49
I hope I helped you :)
Select the answer that correctly orders the set of numbers from greatest to least.
26%, one fifth, 0.3, 0.09 (1 point)
0.30, 26%, one fifth, 0.09
26%, one fifth, 0.30, 0.09
one fifth, 0.09, 26%, 0.30
0.30, 0.09, 26%, one fifth
Answer:
i think it is the third one
Step-by-step explanation:
Answer:
ur dad
Step-by-step explanation:
ur dad left for the milk
u had a dad but never came back :(
What is a pathogen?
O A. A medical instrument used to discover illnesses
O B. A strategy to destroy diseases
O c. Any organism or virus that causes an illness
O D. Any organism that increases a person's health
Answer:
C. Any organism or virus that causes an illness
Step-by-step explanation:
Hi!
Your answer is C.
Pathogens are tiny organisms, bacteriums, and/or viruses that can give any living organism a disease. They can be really harmful, and there are many different types.
Evaluate the expression if r=5 and s = 2.
4r - 10s
Answer:
0
Step-by-step explanation:
4r-10s
4x5-10x2
20-20
= 0
Will give brainlist!!!!!
The midpoint of a line segment is the point that divides the segment into three segments that have the same length?? It that true or false
