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3 years ago

Can someone help me !

Mathematics

1 answer:

rosijanka [135]3 years ago

7 0

Answer:

Step-by-step explanation:

It's the only one with an addition sign...... seems logical, let me know if you got it correct

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Please help me!! A 20% solution of fertilizer is to be mixed with a 80% solution of fertilizer in order to get 150 gallons of a

dangina [55]

Let n be the amount of 80% solution; and 150-n be the amount of 20% solution. Then:
.8n+.2(150-n)=.6(150)
.8n+30-.2n=90
.6n=60
n=100
150-n=50
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3 years ago

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Jeremy makes $4.70 every time he mows a lawn but it costs him $6.80 to refill his lawn mower with gas. If Jeremy mows 5 lawns us

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ANSWER: he would make a profit of $3.1

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3 years ago

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Find the inverse of the function. Show work. <br> g(x)= - 3/x-2 +2

4vir4ik [10]

Answer:

$\displaystyle g^{-1}(x)=\frac{-7+2x}{x-2}$

Step-by-step explanation:

We are given the function:

$\displaystyle g(x)=-\frac{3}{x-2}+2$

Let's find the inverse of g.

Call y=g(x):

$\displaystyle y=-\frac{3}{x-2}+2$

We need to solve for x. Multiply both sides by x-2 to eliminate denominators:

$y(x-2)=-3+2(x-2)$

Operate:

$yx-2y=-3+2x-4$

Collect the x's to the left side and the rest to the right side of the equation:

$yx-2x=-3-4+2y$

Factor the left side and operate on the right side:

$x(y-2)=-7+2y$

Solve for x:

$\displaystyle x=\frac{-7+2y}{y-2}$

Interchange variables:

$\displaystyle y=\frac{-7+2x}{x-2}$

Call y as the inverse function:

$\boxed{\displaystyle g^{-1}(x)=\frac{-7+2x}{x-2}}$

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3 years ago

Find the value of x<br><br>d:6

Phantasy [73]

$\sf{\qquad\qquad\huge\underline{{\sf Answer}}}$

Let's solve for x ~

$\qquad \sf \dashrightarrow \: 5x = 3x + 12$

[ by vertical opposite angle pair ]

$\qquad \sf \dashrightarrow \: 5x - 3x = 12$

$\qquad \sf \dashrightarrow \: 2x = 12$

$\qquad \sf \dashrightarrow \: x = 12 \div 2$

$\qquad \sf \dashrightarrow \: x = 6$

Therefore, the correct choice is D. 6

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2 years ago

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SOLVE THESE EQUATIONS FOR 71 points

krok68 [10]

Answer: 32 first 12 second 16 last Yw!

Step-by-step explanation:

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