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Yakvenalex [24]
3 years ago
5

If 2 over 5 of a ton of concrete covers 5 over 6 of a wall, how many tons of concrete are required to cover the entire wall?

Mathematics
1 answer:
densk [106]3 years ago
6 0
Set up a proportion and use the cross multiply method to solve for x.
2/5 divided by 5/6 =x
2/5 divided by 5/6 is equal to 2/5 times 6/5
x=12/25 ton
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Given f(x) = x^2 + 7x and g(x) = x^4 choose the expression for (f ° g)(x)
Brums [2.3K]

Answer:x^8+7x^4

Step-by-step explanation:

First we have to do the g(x) cause it's closest to x.

g(x)=x^4

x^4 is the output for g(x) ad input for f(x). So now we have to put it in x's place in here➡️f(x)

So, f(x^4)=(x^4)^2+ 7(x^4)

=x^8+7x^4

It's the final output

5 0
3 years ago
What is the slope that is -1/2
Setler79 [48]
Line D.

That is because the line is going downwards so the slope is negative and it is going down one and right 2 so the slope is -1/2
4 0
3 years ago
By what percent will a fraction change if its numerator is decreased by 50% and its denominator is decreased by 25%?
N76 [4]

Answer:

The fractional change is \frac{1}{3} % .

Step-by-step explanation:

Given as :

The original fraction = \dfrac{x}{y}

Where numerator = x

Denominator = y

According to question

The numerator decreased by 50%

Let The new numerator = x' = x - 50% of x

I,e x' = x ( 1 - \frac{50}{100})

Or, x' = x (\frac{100-50}{100})

Or, x' = \frac{50}{100} x

or, x' = \dfrac{x}{2}              .........A

Again

The new denominator = y' = y - 25% of y

i.e y' = y (1 - \frac{25}{100})

Or, y' = y (\frac{100-25}{100})

Or, y' = y (\frac{75}{100})

Or, y' = \frac{3 y}{4}              ............B

So, The new fraction = \frac{x'}{y'} = \frac{\frac{x}{2}}{\frac{3 y}{4}}

Or, \frac{x'}{y'} = \frac{2 x}{3 y}

So, The fractional change = \frac{1-\frac{2}{3} }{1} × 100

Or, The fractional change = \frac{1}{3}× 100

Hence, The fractional change is \frac{1}{3} % . Answer

7 0
3 years ago
Please help me with this also jjodlask​
Verizon [17]
<h3>Composite functions</h3>

When a function is substituted into another function it is known as a composite function.

<u>Given the following functions:</u>

f(x) = 4x  + 3

g(x) = x - 2

Determine f(g(x)) \ and \ g(f(x))

f(g(x)) = f(x-2)\\&#10;f(x-2) = 4(x-2)+3\\&#10;f(x-2)=4x-8+3\\&#10;f(x-2) = 4x - 5\\&#10;f(g(x)) = 4x - 4&#10;

1) Determine the value of f(g(5))

f(g(5))=4(5) - 4\\&#10;f(g(5))=20-4\\&#10;f(g(5))=16

2) For the function g(f(-6))

g(f(-6))=4(-6) + 1\\&#10;g(f(-6))=-24+1\\&#10;g(f(-6))=-23

3) For the value f(f(7)),we need to determine f(f(x))

f(f(x)) = f(4x+3)\\&#10;f(f(x))= 4(4x+3)+3\\&#10;f(f(x))=16x+12+3\\&#10;f(f(x))=16x+15\\&#10;f(f(7)) = 16(7) + 15\\&#10;f(f(7)) = 127

4) For the function g(f(x));

g(f(x))=(4x+3)-2\\&#10;g(f(x))=4x+3-2\\&#10;g(f(x))=4x+1

learn more on composite functions here: brainly.com/question/10687170

7 0
2 years ago
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ASAP 30 POINTS BRAINLIEST IF RIGHT
viva [34]

Answer:

answer in the link below if you have any questions let me know

5 0
3 years ago
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