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Sav [38]
3 years ago
12

9

Mathematics
1 answer:
IRINA_888 [86]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Because my teacher gave us the answer.

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Decide whether each relation defines y as a function of x. Give the domain and range.
lisov135 [29]
Y=x².

This is te function of a parabola open upward

the domain is all values of x ={x/x∈z}
7 0
3 years ago
What is the value of x, when x2 + 5 = 21? A) 2 or -2 B) 4 or -4 C) 5.5 or -5.5 D) 8 or -8
lord [1]
X would be equal to 8.
4 0
3 years ago
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What is the solution to the system of equations?<br><br> {y=5x−10y=−3x+14
Dahasolnce [82]

Answer:

x = 3 and y = 5

Step-by-step explanation:

Given equations are :

y=5x−10 ..(1)

y=−3x+14 ...(2)

Subtract equation (2) from (1).

y-y = 5x−10-(−3x+14)

0 = 5x-10+3x-14

0= 8x-24

8x = 24

x = 3

Put the value of x in equation (1).

y=5(3)−10

= 15-10

y = 5

So, the values of x and y are 3 and 5 respectively.

5 0
3 years ago
Find the total cost.
mel-nik [20]
The answer is A $454.52
7 0
4 years ago
CAN YOU GUYS PLEASE HELP ME?!!!!!!
DanielleElmas [232]

Answer:

6) C

-2r\left(8r+5\right):\quad -16r^2-10r\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac\\=-2r\cdot \:8r+\left(-2r\right)\cdot \:5\\=-2\cdot \:8rr-2\cdot \:5r\\\mathrm{Simplify}\:-2\cdot \:8rr-2\cdot \:5r:\quad -16r^2-10r

<em>7) </em>B

4a\left(a^2+7a+4\right):\quad 4a^3+28a^2+16a

\mathrm{Distribute\:parentheses}\\=4aa^2+4a\cdot \:7a+4a\cdot \:4\\=4a^2a+4\cdot \:7aa+4\cdot \:4a\\\mathrm{Simplify}\:4a^2a+4\cdot \:7aa+4\cdot \:4a:\quad 4a^3+28a^2+16a

<em>Hope this helps and have a great day!!!</em>

<em>Sofia</em>

6 0
3 years ago
Read 2 more answers
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