Answer:
let the two numbers are x & y
x+y=30...eq(1) &x-y=12....eq(2)
x=30-y then put in the eq(2)
30-y-y=12
30-2y=12
-2y=12-30
-2y= -18
y=9 then we put this answer in to eq(1)
so,x+y=30
x+9=30
x=30-9
x=21
so, the two numbers are (21,9)
round off each of the following to 2 decimal places.
The following balls are placed in an urn: 4 red, 2 yellow, 4 blue, and 2 green. One ball is randomly drawn from the urn. What is the probability that the ball
Is either yellow or green?
Answer:
1/3 as;
16.66665/100 + 16.66665/100 = 33.33/100
Convert to 12 = 4+4+2 +2 = 4/12
Step-by-step explanation:
or 1/3
please help me and thank you
Answer:B 1 at 3 Cups=7 cups
Step-by-step explanation:
4x4=16 cups
1.5×6=9 cups
16-9=7
Which statement must be true
Answer:
Its A
Step-by-step explanation:
Please help ASAP will mark brainliest
Find the volume of this hemisphere. Round your answer to two decimal places.
Answer:
[tex]1263.66ft^3[/tex]
Step-by-step explanation:
[tex]Volumesphere=\frac{4}{3} *\pi *r^3[/tex]
[tex]\frac{4}{3} *\pi *(\frac{16.9}{2}) ^3\\volume sphere= 2527.31128245\\Volume hemisphere= \frac{volumesphere}{2} \\Volume hemisphere= \frac{ 2527.31128245}{2} \\Volume hemisphere= 1263.65564122\\Rounded= 1263.66[/tex]
Answer: 5
Step-by-step explanation:
Find the midpoint of A and B where A has coordinates (2, 4)
and B has coordinates (-3,-9).
Answer:
x= -0.5
y= -2.5
Which expression is equivalent to (90?
Of(5) g(5)
f(5) + g(5)
5f(5)
59(5)
the answer is 5f(5)
Trust me just work it out and you will get the same
You are walking directly away from your house. You are 5 miles away from your house when you start walking, so you can determine your distance from your house by adding 5 to the number of miles you have walked. In the equation below, x represents the number of miles you have walked, and y represents your distance from home in miles. The relationship between these two variables can be expressed by the following equation: y = x + 5. Identify the dependent and independent variables. *
Answer:
The independent variable is the number of miles you walked.
Unfortunately, I do not know the dependant variable.
Step-by-step explanation:
Dependent variable is distance from home (y)
Independent variable is number of miles walk (x)
What is equation?Equation is the defined as mathematical statements that have a minimum of two terms containing variables or numbers is equal.
According to questions,
x represents the number of miles have walked
y represents distance from home in miles.
The relationship between these two variables can be expressed by the following equation: y=x+5
The dependent variable is that whose value changes whenever the value of the independent variable is changed.
From the equation above:
When x=2, y=2+5=7 miles
When x=4, y=4+5=9 miles
We can clearly see that y changes for different values of x.
Hence, dependent variable is distance from home (y)
Independent variable is number of miles walk (x)
Learn more about equation here:
brainly.com/question/10413253
#SPJ2
Suppose that 2x^2 - 5x + k = 0 is a quadratic equation with one solution for x. Express k as a common fraction.
Thanks for helping in advance!
Answer:
if u answer my question i will answer yours
Step-by-step explanation:
2x^2 - 5x + k = 0
If this has one solution then the discriminant = 0
So
(-5)^2 - 4 (2) k = 0
25 - 8k = 0
25 = 8k
25/8 = k
i need help pleaseeeeeeeee
Answer:
the last option
Step-by-step explanation:
-5(3x+10)+6=-14 help show work
Answer:
-15x-50+6=-14
-15x-44=-14
+44. +44
-15x = 30
divide by -15 on both sides
30/-15
x=-2
Step-by-step explanation:
In which type of triangle is the orthcenter on the perimeter of the triangle
Answer:
Right Triangle
Step-by-step explanation:
All altitudes meet on the right angle vertex.
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Solve the following equation for x. x2 + 8x + 7 = 0 A. x = -1; x = -7 B. x = 1; x = -7 C. x = 1; x = 7 D. x = -1; x = 7
So the right answer is of option A.
Look at the attached picture
Hope it will be helpful to you..
Answer:
a
Step-by-step explanation:
i took this text
What percent of campers are over the age of 14?
Enter the correct answer in the box.
Hints - 1. Count the dots above values greater than 14. 2. Divide the number of dots above values greater than 14 by the total number of dots. Then multiply the result by 100.
Please answer ASAP! All help is appreciated except for the ones not putting actual answers. Stay safe and inside unless it’s something important. Have a blessed one.
Answer: 45%
Step-by-step explanation: There's 9 people over the age of 14. And 9 divided by the total number, 20, gives you 0.45. 0.45 multiplied by 100 is 45.
Evaluate.
4+ (3+5)*3 =
Answer: 28
Step-by-step explanation: Follwing PEMDAS, add the 3 and 5 in the parentheses first. You get 8, then multiply by 3, which gives you 24. Add 4 to 24 and it will give you 28.
Answer:
If i'm not mistaken, using PEMDAS which is parenheses, exponents, multiplication, division, adding and subtracting, the answer will be 28.
Step-by-step explanation:
3+5=8
8 * 3= 24
24 + 4= 28
Find the constant of variation k for the inverse variation. Then write an equation
for the inverse variation.
y=2.5 when x = 9
Answer:
k = 22.5
xy= 22.5
Step-by-step explanation:
A system of two equations is shown below. What will you need to multiply the
top equation by in order to solve this system using the elimination method?
X+ y = 4
3x + 4y = 14
O A. 3
B. 4
C. -2
O D. -3
Answer:
the right answer is : -3
Step-by-step explanation:
[tex]\left \{ {{x+y=4} \atop {3x+4y=14}} \right. \\\left \{ {{-3(x+y)=-3*4} \atop {3x+4y=14}} \right. \\\left \{ {{-3x-3y=-12} \atop {3x+4y=14}} \right. \\\left \{ {{-3x-3y+3x+4y=2} \atop {3x+4y=14}} \right. \\\left \{ {{-3y+4y=2} \atop {3x+4y=14}} \right. \\\left \{ {{y=2} \atop {3x+4*2=14}} \right. \\\left \{ {{y=2} \atop {3x=14-8=6}} \right. \\\left \{ {{y=2} \atop {x=\frac{6}{3}=2 }} \right.[/tex]
32pts and BRAINLIEST FOR BST ANSWER!!
Use sigma notation to represent the sum of the first seven terms of the following sequence: −4, −6, −8, …
the summation from n equals one to 7 of quantity negative 2 minus 2 times n
the summation from n equals one to 7 of quantity negative 4 plus 2 times n
the summation from n equals one to 7 of quantity negative 2 minus 4 times n
the summation from n equals one to 7 of quantity negative 2 plus 2 times n
Answer:
B
Step-by-step explanation:
B cause
Answer:The Correct answer is C) the summation from n equals one to 6 of quantity negative 7 minus 3 times n
Step-by-step explanation:
The given Arithmetic sequence: −10, −13, −16, …
Theory : For arithmetic sequence : a, a+d,a+2d......a+(n-1)d
Formula for summation is given as Sn =
Where, a= First term of sequence = (-10) and d= difference of any two consecutive terms = (a+d)-(a) = (-13)-(-10)= (-3)
Putting values in Summation formula
Sn =
Sn =
Sn =
Sn =
Thus, Correct answer is C) the summation from n equals one to 6 of quantity negative 7 minus 3 times n
does anyone understand the Pythagorean Theorem
Answer:
a^2 + b^2 = c^2
Step-by-step explanation:
In mathematics, the Pythagorean theorem, also known as Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
a^2 + b^2 = c^2
a = side of right triangle
b = side of right triangle
c = hypotenuse
*can only be used for a RIGHT triangle*
( hope i was able to help)
answer with work pls!!
Answer:
The surface area of the triangular prism is 24 mi².
Step-by-step explanation:
A surface area is the sum of the areas of all faces on a 3D shape.
A triangular prism has 5 faces consisting of three rectangular sides and two triangular faces.
To find the surface area of the rectangular sides, you multiply the length by the height.
5x1=5
4x1=4
3x1=3
5+4+3=12
the surface area of the rectangular sides is 12 mi²
To find the surface area of the triangular faces, you can use the formula, A=1/2bh, where A is the surface area, b is the base, and h is the height.
A=1/2 · 3(base) · 4(height)
Since there are two triangular sides you multiply this by 2, which cancels out the 1/2 since 1/2 x 2 = 1.
A = 3 · 4
A = 12
the surface area of the triangular faces is 12 mi²
Add up the total surface area of the rectangular sides and triangular faces.
12 + 12 = 24
Hope this helps ;D
Pls mark as brainliest?
solve for x
6(x-9)=3x+2
give your answer as an improper fraction
Answer:
56/3
Step-by-step explanation:
6x-54=3x+2
3x-54=2
3x=56
x=56/3
Answer:
56/3Step-by-step explanation:6(x-9)=3x+26*x-6*-9=3x+26x-54=3x+26x-3x=54+23x=563x/3=56/3x=56/3HELP HELP!!!!!!!!!!!!!!!!!!!!!!!
Answer:
5 1/12
Step-by-step explanation:
3+1 is four, when you add the fractions it's going to make a whole cup, and the reminder is 1/12 of a cup
Answer:
answer d or 3 3/12
Step-by-step explanation:
what are two methods you can use to find the area of a square. I WILL GIVE BRAINLIEST I NEED HELP QUICKKKKK
Answer:
To find the area of a rectangle multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area. This is the same as saying length2 or length squared.
Step-by-step explanation:
Answer:
For a rectangle, you get the length and width and multiply them
For a Square, you have to find one side length and mulitply it by itself
or you can split the square with a diagonal into 2 triangles, get the area of each and add them up
or split the square in half and find the area of both rectangles and then add them together
Step-by-step explanation:
For example, if the measure of one side of a square is 5, because all the other lengths are the same, you do 5 times 5 which equals 25 or 5^2 which is 25
Help please!
Find the surface area of a cube with sides and height of 10 inches
Answer:
600
Step-by-step explanation:
10 times 10 is 100. A cube has 6 sides. 6 times 100 is 600
Answer:
10 x 10 = 100 so the area of 1 side is 100
there is 6 sides and the surface area is all the areas added up
100 x 6 = 600
the surface area is 600
Step-by-step explanation:
What number is the opposite of 98?
Answer:
-98
Step-by-step explanation:
hope this is right
Answer:
-98
Step-by-step explanation:
a negative number is the opposite of a positive number
0 0 1 2 3 4 4 5 6 6
Which of the following could be the one missing data item for the above
set, if the mode is 4?
OA) 0
OB) 3
OC) 4
OD 5
The graph represents the distribution of the number of questions answered correctly on a 50-question math test.What is the standard deviation of the data? 4 8 12 24
The standard deviation is a measure of dispersion.
What is standard deviation?Standard deviation is a measure of dispersion. Measures of dispersion show how numbers are scattered around the mean. The question is incomplete hence the graph was not showed.
However, the shape of a normal curve is much dependent on the standard deviation of the data set.
Learn more about standard deviation: https://brainly.com/question/12402189
Answer:
a.4 or A
Step-by-step explanation:
Enter all answers to the nearest tenth.
A day care program has an average daily expense of $75.00. The standard deviation is $5.00. The owner takes a sample of 64 bills. What is the probability the mean of his sample will be between $70.00 and $80.00?
Step 1. Calculate a z-score for $70.00 -
Step 2. Give the probability for step 1. %
Step 3. Calculate the z-score for $80.00 +
Step 4. Give the probability for step 3. %
Step 5. Add the probabilities from steps 2&4. %
Answer:
What is the probability the mean of his sample will be between $70.00 and $80.00? = 64/64 =1
s1) = 99% =z score = 127/128
s2)64/64 = 1
s3)95% of 64 = 123/128
s4) p) step 3 = 95% of 64 = 60.08 /64 = 60/64 = 93.75%
s5) P)of 2+4 = 283/292 = 96.92%
Gideon asked 50 students at his middle school which option they would like for lunch: pizza, sandwiches or burritos. Ten students said pizza, 4 said sandwiches and the remaining students answered burritos. What percent of students in the school would you predict would choose burritos based on this survey?
Answer:
72% of students chose burritos
Step-by-step explanation:
first you would add up the total of kids that said they liked the other two options, which was pizza and sandwiches: 10+4=14
then you would take that number and subtract it from the total of all students: 50-14=36
and then you would take that number and divide it by 50: 36/50=.72
turn that into a percent and you'd get 72%
