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lapo4ka [179]
3 years ago
12

Look at the question in the picture pls I need help

Mathematics
1 answer:
Lena [83]3 years ago
8 0

Step-by-step explanation:

Let the painting's width be w inches and length be l inches.

w + 6 = 2l

w = 2l - 6 --(1)

2w + 2l = 84 --(2)

sub (1) into (2):

2(2l - 6) + 2l = 84

2l - 6 + l = 42

3l = 48

l = 16

when l = 16, w = 2(16) - 6 = 26

area of painting = lw = 16 x 26 = 416square inches

Therefore, only statements 1, 3 and 5 are true

Topic: Algebraic equations + Simultaneous linear equations

If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

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One container is filled with a mixture that is 30%acid a second container is filled with a mixture that is 50%acid the second co
julsineya [31]

Answer:

The amount of acid in third container is =42%

Step-by-step explanation:

Given , one container is filled with a mixture that is 30% acid a second container filled with a mixture that is 50% acid and the second container 50% larger than the first .

Let, the volume of first container is = x

Then , the volume of second container = (x+ x of 50%)

                                                                 = x + 0.5 x

                                                                 = 1.5 x

Therefore the amount of acid in first container =x \times \frac{30}{100} = 0.3 x

The amount of acid in second container =1.5x \times \frac{50}{100}  = 0.75x

Total amount of acid= 0.3x + 0.75x = 1.05 x

Total amount  of solution = x+1.5x = 2.5x

The amount of acid in third container is = \frac{1.05x}{2.5x} \times 100% %

                                                                     = 42%

4 0
3 years ago
Juanita rolls a number cube x times. For which value of x are the experimental probability and the theoretical probability most
ehidna [41]

Answer:

1000


Step-by-step explanation:

The theory is that <em><u>"experimental probability goes closer and closer in value to the theoretical probability as the number of trials increase."</u></em>


So <em>more trials means more they are closer and equivalent.</em>

So out of the answer choices, the largest number of trials is 1000.


1000 is the correct answer.

8 0
3 years ago
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Nostrana [21]

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7 0
2 years ago
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lys-0071 [83]
You would subtract the the amount painted from 500.
500-193=307
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3 0
3 years ago
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MrRa [10]

Step-by-step explanation:

-2x - 5 = 4

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