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2 years ago

What value of k make the equation 7(14k + 15) -7 = 19k + 6 (-13 + 15k) true?

Mathematics

1 answer:

dalvyx [7]2 years ago

4 0

Answer: the answer is c- 16

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Help me with this math problem please

mrs_skeptik [129]

Answer:

$y=8$

$RS=77, ST=31$

Step-by-step explanation:

Note that the entire segment RT is the combined lengths of RS and ST. So:

$RT=RS+ST$

We know that RT is 108, RS is (9y+5), and ST is (3y+7). Substitute:

$108=(9y+5)+(3y+7)$

On the right, combine like terms:

$108=(9y+3y)+(5+7)$

Add:

$108=12y+12$

Subtract 12 from both sides. The right cancels:

$96=12y$

Divide both sides by 12:

$y=8$

So, the value of y is 8.

To find RS and ST, substitute 8 for y. So:

$RS=9y+5$

Substitute 8 for y:

$RS=9(8)+5$

Multiply:

$RS=72+5$

Add:

$RS=77$

Do the same for ST:

$ST=3y+7$

Substitute 8 for y:

$ST=3(8)+7$

Multiply:

$ST=24+7$

Add:

$ST=31$

5 0

3 years ago

Read 2 more answers

Wich is bigger 1.320. 1.302 < > =

elena-14-01-66 [18.8K]

1.320 >1.302 or 1.302<1.320

4 0

3 years ago

Kaylee has $100 to put toward purchasing a computer and plans on paying $30 a month until she pays off the value of the computer

yKpoI14uk [10]

Answer:

y=100-30x

Step-by-step explanation:

3 0

3 years ago

Here you go the brainless

Mrac [35]

$m= \frac{y_1-y_2}{x_1-x_2} \\ m= \frac{4-(-1)}{-4-1 } \\ m= \frac{5}{-5} \\ m=-1$

4 0

3 years ago

What is the product (9t-4)(-9-4)

Scrat [10]

Answer:

-81t^2 +16

Step-by-step explanation:

(9t-4)(-9t-4)

FOIL

first: -9t*9t = -81t^2

outer : -4*9t = -36t

inner : -4 *-9t = 46t

last = -4*-4 = 16

Add them together

-81t^2 -36t+36t+16

-81t^2 +16

6 0

3 years ago