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uranmaximum [27]
3 years ago
12

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

<em>{90 + 94 + 96 + 90} = 370/4 = 92.5</em>

<em>{95 + 99}                  = 194/2 = 97</em>

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

<em>{71}                =  71/1               = 71</em>

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

____________________________________________________

2nd Question

<em>.10(95) +.20(80) +.50(67) +.20(60) = 71</em>

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Solve the system 2x+4y=16 5x +3y=19 then find the value of y/x
AURORKA [14]

Answer:

I would change 2x+4y=24 into x=12–2y

To do that, divide both sides by 2 and then subtract 2y on each side.

After that, substitute for x. 3x+2y=19 would become 3(12–2y)+2y=19.

Then solve.

3(12–2y)+2y=19

36–6y+2y=19

-4y+36=19

-4y=-17

y=4.25

Then, substitute y in either equation.

Either this:

3x+2y=19

3x+2(4.25)=19

3x+8.5=19

3x=10.5

x=3.5

Or:

2x+4y=24

2x+4(4.25)=24

2x+17=24

2x=7

x=3.5

Or you could solve it in the equation you created in the beginning:

x=12–2y

x=12–2(4.25)

x=12–8.5

x=3.5

The coordinates where the lines intercept are (3.5, 4.25).

Sorry for the long answer!

4 0
3 years ago
Find the product. Write fractions in the simplest form.<br><br> 5/6(-8/15)<br> *
aliina [53]

Answer:

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Step-by-step explanation:

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and 6 by 8

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6x8 is 48 , denominator

then the answer should have the negative sign

4 0
3 years ago
Read 2 more answers
What is 3%+5%+4565+76+90x6(7+5)?
lawyer [7]
I believe it’s 5,193.0315 I’m not to sure
6 0
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TEA [102]
With these, always write out the multiples first.

Start like this:
(assume one of the factors is negative)
1 and 1120
2 and 560
4 and 280
5 and 224
7 and 160
8 and 140
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14 and 80
16 and 70
20 and 56
28 and 40
32 and 35

from those, the obvious choice is the one with a difference of three. In this case, 32 and 35, because -32 + 35 equals 3.
6 0
3 years ago
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Paraphin [41]
B, -3(-4)^2+(2)4(-4) plug into a calculator
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3 years ago
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