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3 years ago

Find the value of y-8 when y = 15.

Mathematics

2 answers:

VladimirAG [237]3 years ago

7 0

Answer: y=3

Step-by-step explanation:

the initial statement is

∝

to convert to an equation multiply by k the constant

of variation

⇒

to find k use the given condition

when

y=kx⇒k=y x=15×5=75

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

∣

∣22y=75x22∣∣

when x=25 then

y=75 25=3

Gennadij [26K]3 years ago

5 0

Step-by-step explanation:

I hope understand this

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What is the slope of the line that contains the points (-1, 8) and (2, -4)

Reptile [31]

Answer:

+5 is the slope

Step-by-step explanation:

4 0

3 years ago

8x + 6 - 2x = 34 x= ?

e-lub [12.9K]

8x + 6 - 2x = 34x

Simplify 8x +6 - 2x to 6x + 6:
6x + 6 = 34x

Subtract 6x from both sides:
6 = 34x- 6x

Simplify 34x - 6x to 28x:
6 = 28x

Divide both sides by 28:
$\frac{6}{28}$ = x

Simplify $\frac{6}{28}$ to $\frac{3}{14}$ :
$\frac{3}{14}$ = x

Now switch sides and the answer is:

x = $\frac{3}{14}$

:) <3

5 0

3 years ago

Read 2 more answers

a water tank is draining at a constant rate if after five minutes the tank is drained by 4.5 gallons what is the rate in gallons

vova2212 [387]

Answer:

The rate is 0.9 gallon per minute

Step-by-step explanation:

Here, we have 4.5 gallons drained in 5 minutes but we are interested in calculating the rate per minute

Let the amount drained per minute be x

4.5 gallons = 5 minutes

x gallon = 1 minute

Let’s cross multiply;

x * 5 = 4.5 * 1

5x = 4.5

x = 4.5/5

x = 0.9 gallons

8 0

3 years ago

Factor completely x^2-48

fredd [130]

Answer: $(x-7)(x+7)$

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below;

- Make the equation equal to zero:

$x^{2}-49=0$

-Add 49 at both sides:

$x^{2}=49$

- Now, you must take the square root of both sides of the equation, then you obtain the following roots:

$x=\sqrt{49}\\x_1=7\\x_2=-7$

- Then you have:

$x^{2}-49=$ $(x-7)(x+7)$

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3 years ago

Hat is the length of the hypotenuse, x, is a Pythagorean triple? 22 29 41 42

aniked [119]

Of your numbers listed, 29 and 41 are the lengths of the hypotenuse of a Pythagorean triple.

Those triples are
(20, 21, 29)
(9, 40, 41)

_____
The On-Line Encyclopedia of Integer Sequences (OEIS) lists the hypotenuses of primitive triples as sequence number A020882.

4 0

4 years ago