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3 years ago

Correct answers only please!

Mathematics

2 answers:

Mariulka [41]3 years ago

8 0

I got 71%, by finding out the individual percents and adding them up. Don’t know if that’s how you solve it, but it’s an answer choice, so makes enough sense to me.

Travka [436]3 years ago

5 0

Answer:

1st Question

A. 85

2nd Question

B. 71

Step-by-step explanation:

1st Question

{90 + 94 + 96 + 90} = 370/4 = 92.5

{95 + 99} = 194/2 = 97

{87 + 75 + 82 + 85} = 329/4 = 82.25

{71} = 71/1 = 71

.20(92.5) +.25(97) +.30(82.25) +.25(71) = 85.175 Rounded-up = 85

____________________________________________________

2nd Question

.10(95) +.20(80) +.50(67) +.20(60) = 71

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Mo's farm stand sold a total of 165 pounds of apples and peaches. She sold apples for a $1.75 per pound and peaches for $2.50 pe

-BARSIC- [3]

X=pounds of apples
y=pounds of peaches.
we suggest this equation:
x+y=165
1.75x+2.5y=337.5
We solve this equation by substitution method:
x=165-y
1.75(165-y)+2.5y=337.5
288.75-1.75y+2.5y=337.5
0.75y=337.5-288.75
0.75y=48.75
y=48.75/0.75=65

x=165-y
x=165-65=100.

She sell 100 pounds of apples and 65 pounds of peaches.

8 0

3 years ago

Read 2 more answers

Bradley has 64 1-inch cubic blocks.He uses all the blocks to build a rectangular prism that is 2 inches high and 2 inches wide.H

Lynna [10]

Answer:

The length of the rectangular prism is $16\ in$

Step-by-step explanation:

step 1

Find the volume of the 64 1-inch cubic blocks

The volume of one cubic block is

$V=(1)^{3}=1\ in^{3}$

the volume of 64 cubic blocks is

$V=64(1)=64\ in^{3}$

step 2

Find the length of the rectangular prism

The volume of the rectangular prism is equal to

$V=LWH$

we have

$V=64\ in^{3}$

$W=2\ in$

$H=2\ in$

substitute and solve for L

$64=L(2)(2)$

$64=4L$

$L=64/4=16\ in$

5 0

3 years ago

A cube has a volume of 74 088 cm cubed. What is the surface area of the cube

Naddika [18.5K]

Answer:

10 cm²

Step-by-step explanation:

74 088 is the cubed of one side. So you would do $\sqrt[3]{74088}$ which is 42. So one side of the cube is 42. To find the surface area, you would do 6(42x42) which would give you 10584. Remember to put cm²

3 0

3 years ago

What are the zeros of 3x²(x+π)³(x-4)²

Aneli [31]

Hi again!

The zeros are the values of x. This is where the graph intersects the x - axis. In order to find the zeros, replace y with 0 and solve for x.

The answer is x = 0, -π, 4

I am not sure what grade are you or the level, but for me, they sometimes asked me to find their multiplicities as well

The multiplicity of a root is the number of times the root appears.

So, the answer are
x = 0 and the multiplicity of 2
x = -π and the multiplicity of 3
x = 4 and the multiplicity of 2

Good luck with your studies!

5 0

3 years ago

Please help me solve this.

erastovalidia [21]

Answer:

B. Subtract 7

Step-by-step explanation:

You always want to isolate the x term to solve for x in any equation. Therefore, we need to move the 7 to the other side. Only way to do that is to subtract 7 on both sides.

8 0

4 years ago