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3 years ago

HELP ME PLS I NEED HELP!!

Mathematics

1 answer:

denis-greek [22]3 years ago

5 0

Answer: B

Step-by-step explanation:

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What’s the answer please

skad [1K]

Answer:

h ≤ 124 / 9

h ≤ 13.78

Step-by-step explanation:

(3/4) (12h - 32) ≤ 100 (multiply both sides by 4)

(3) (12h - 32) ≤ 100 (4)

(3) (12h - 32) ≤ 400 (distribute 3 into the parenthesis)

(12h)(3) - (32)(3) ≤ 400 (expand left side terms)

36h - 96 ≤ 400 (add 96 to both sides)

36h ≤ 400 + 96

36h ≤ 496 (divide both sides by 36)

h ≤ 496 / 36 (sinmplify)

h ≤ 124 / 9

h ≤ 13.78

3 0

3 years ago

How many solutions does the equation 5p − 4p − 8 = −2 + 3 have?

snow_lady [41]

It is one because im doing that rn and i just got it right xd

5 0

4 years ago

Read 2 more answers

If a person rows to his favorite fishing spot 14 miles downstream in the same amount of time that he rows 2 miles upstream and i

Maru [420]

We will use distance formula which states:

$d=r \times t$

where 'd' is the distance, 'r' is rate or speed and 't' is time taken.

So, $t=\frac{d}{r}$

Let 'u' be the speed of boat in still water.

A person rows 14 miles downstream to the fishing spot.

So, the speed of boat downstream = (u+6) mph

Time taken by boat to go downstream = $\frac{14}{u+6}$ hr

He rows 2 miles upstream from the fishing spot.

So, the speed of boat upstream = (u-6) mph

Time taken by boat to go upstream = $\frac{2}{u-6}$ hr

Since, The person took same amount of time in going downstream and then going upstream.

So, $\frac{14}{u+6}=\frac{2}{u-6}$

Cross multiplying, we get

$14 (u-6)= 2(u+6)$

$14u - 84 = 2u + 12$

$12u = 96$

u = 8

So, speed of boat in still water is 8mph.

Now, Time taken in going downstream = $\frac{14}{u+6}$

= $\frac{14}{8+6}$

= 1 hr

Now, Time taken in going upstream = $\frac{2}{u-6}$

= $\frac{2}{8-6}$

= 1 hr

So, total time taken to cover 16 miles is 2 hours.

8 0

3 years ago

Simplify the following expression. -3 + 9

lisabon 2012 [21]

-3+9= 6 hope this helped!

6 0

3 years ago

Read 2 more answers

What is the inverse of g? <br> g(x) = 3/x+7

ikadub [295]

Given function :-

$\bf \implies g(x) = \dfrac{3}{x}+7$

To find its reverse , substitute y = g(x) .

$\bf \implies y = \dfrac{3}{x}+7$

Interchange x and y .

$\bf \implies x = \dfrac{3}{y}+7$

Solve for y .

$\bf\implies \dfrac{3}{y}= x -7 \\\\\bf\implies y =\dfrac{3}{x-7}$

Replace y with f-¹(x) .

$\implies\boxed{\red{\bf f^{-1}(x) = \dfrac{3}{x-7} }}$

6 0

3 years ago