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3 years ago

What’s the answer A. 2 B.4 C.6 D. 12

Mathematics

2 answers:

dem82 [27]3 years ago

4 0

Answer:

C.6

Step-by-step explanation:

x - y = 4

x + y = 8

----------------------Add

2x = 12

x = 6

x coordinate of the solution to the system is 6

Answer

C.6

Firdavs [7]3 years ago

3 0

The Answer is C) 6 I believe

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What is the surface area using integrals of these two lines. Y=10-x^2 and Y=x^2+2 from the bounds x=2 and x=-2.

Lelu [443]

Check the picture below.

$\bf \displaystyle\int\limits_{-2}^{2}~[\stackrel{\textit{above function}}{(10-x^2)}~~-~~\stackrel{\textit{below function}}{(x^2+2)}]dx\implies \int\limits_{-2}^{2}~(10-x^2-x^2-2)dx \\\\\\ \displaystyle\int\limits_{-2}^{2}~(8-2x^2)dx\implies \left. 8x\cfrac{}{} \right]_{-2}^{2}-\left. \cfrac{2x^3}{3} \right]_{-2}^{2} \\\\\\ ([16]-[-16])~~-~~\left( \left[ \cfrac{16}{3} \right]-\left[ -\cfrac{16}{3} \right]\right)\implies (32)~~-~~\left( \cfrac{32}{3} \right) \\\\\\ \cfrac{64}{3}\implies 21\frac{1}{3}$

5 0

3 years ago

Shannon spent the day at the mall. She spent $5.75 on earrings and 4 times that amount on a shirt. After shopping, she came home

Aleksandr [31]

The answer is definitely D

5 0

3 years ago

Will give brainliest, 15 points!

Helga [31]

Answer:

$35

Step-by-step explanation:

This is actually pretty simple!

All you have to do is plug 5 in place of x and solve.

Y=5(5)+10

Y=25+10

Y=35

She raises $35 if she walks 5 kilometers.

3 0

3 years ago

Markus is overdrawn at the bank by $9. His brother has $15 more than him. How much money does Markus’ brother have?

shusha [124]

Answer:

24$

Step-by-step explanation:

its just 9$ + 15$ = 24$

6 0

3 years ago

Does each equation represent a proportional relationship? Choose Yes or No.

max2010maxim [7]

Hi there!

»»————-　★　————-««

I believe your answer is:

$y = 7x - 3\leftarrow \text{No.}\\\\y = 150x \leftarrow \text{Yes.}$

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

$\boxed{\text{General Proportional Formula:}}\\\\y = kx\\\rule{150}{0.5}\\$\bullet \text{ } k - \text{Constant of Proportionality}\\\rule{150}{0.5}\\\text{Since } y=150x \text{ is in this form, we can say that it is a proportional relationship.}\\\rule{150}{0.5}\\\text{We can also tell if something is proportional by graphing them.}$

$\textbf{Proportional graphs go through the origin.}$

⸻⸻⸻⸻

Since y = 7x - 3 does not pass the origin, it is not proportional. However, y = 150x does, so it is proportional.

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

4 0

3 years ago