Allie answered 72% of the questions on her math test correctly. If she answered 18 questions correctly, how many questions were on the test?

Answers

Answer 1

Answer:

Answer:

25 questions

Step-by-step explanation:

The answer to this question can be solved by setting up a proportion, or equivalent ratios (fractions). Since we know that 18 questions was equal to 72% correct on the test, we can set up a proportion to find the total number of questions:

$(72)/(100)=(18)/(x)$ , where 'x' represents the total number of questions (or 100%) of the questions on the test.

Cross-multiply and divide: 72x = 18(100) or 72x = 1800

Divide both sides by 72: 72x/72 = 1800/72

Solve for x: x = 25 questions

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2. Evaluate the expression by substituting the given value(s):(y)2 +-3x2 - 92 for x = 8 and y = -3a. -72b. - 3x2 + y2 +(-81)c. -264d. 504
During training, Janice kayaked 4.68 miles on Monday and 5.61 miles on Tuesday. How much farther did she kayak on Tuesday?
Graph of function f of x equals negative x squared plus 8 multiplied by x minus 15Function 2 f(x) = −x2 + 2x − 3 Function ____ has the larger maximum. (Put 1 or 2 in the blank space) Numerical Answers Expected!
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What is the surface area of the square pyramid? Use the net of the pyramid to find the surface area.A.
219.8 mm2

B.
341.6 mm2

C.
170.8 mm2

D.
390.6 mm2

Answers

Using the net, we see that the square pyramid breaks down to 4 equivalent triangles and a square. We can use this formula to solve for the surface area:

Sa=A(square)+4*A(triangle)

The formula for the area of a square is

A=l*w
A=7*7
A=49mm²

The formula for the area of a triangle is:

A=1/2b*h
A=1/2*7*12.2
A=42.7mm²

Now that we have the individual areas of the shapes, we can solve for the surface area.

Sa=A(square)+4*A(triangle)
Sa=49mm²+4*42.7mm²
Sa=49mm²+170.8mm²
Sa=219.8mm²

Answer=219.8mm²
ANSWER=A

Given that A = (9,9,2), B = (1,3,5) and C = (5,6,4), find the vector equation of the line through A and B.a.r=(8,6,-3)+t(9,9,2)
b.r=(9,9,2)+t(-8,-6,3)
c.r=(9,9,2)-t(-8,6,-3)
d.r=(9,9,2)-t(8,-6,3)

Answers

Answer:

It's not C

Step-by-step explanation:

Sorry bud I tried to help you out but i guessed wrong on my test, atleast its not C though:)

Answer:

The answer is B.r=(9,9,2)+t(-8,-6,3)

Step-by-step explanation:

Got it right on the quiz on Edge.

Stay Safe

Max wants to buy some shorts that are priced at 8$ each. He decides to buy a pair of sneakers for 39$, but the total cost of the shorts and sneakers must be less than 75$

Answers

in equation 39+8x=>75
x equals the amount of shorts
he can buy 4 shorts maximum
the minimum is 1
he doesn't need 2 go over his limit

39+8*4=71
39+1*4=47

The length of a chalkboard is 5 feet.the width is 10 ft. mr Jones has 20 feet of string to place around it. Ms coley cuts off 3 feet of the decoration, will there be enough string to place around the chalkboard?

Answers

Mr jones does not have enough string to place around the chalkboard

Answer:

nope he doesn't

Step-by-step explanation:

What is the total perimeter of this figure

Answers

Gotta put the whole question bro?

Answer:

dude seriously

Step-by-step explanation:

Solve :
20-9x=11
4(2x+1)=8
5(2x+5)=-15
3(8x+1)=-21

Answers

20-9x=11
-9x=11-20
-9x= -9
x= -9/(-9)
x=1

4(2x+1)=8
2x+1=8/4
2x+1=2
2x=2-1
2x=1
x=1/2
x=0.5

5(2x+5)=-15
2x+5= -15/5
2x+5= -3
2x= -3-5
2x= -8
x= -8/2
x=-4

3(8x+1)=-21
8x+1= -21/3
8x+1= -7
8x= -7-1
8x =-8
x= -8/8
x= -1

Answer:Hi

Step-by-step explanation:

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