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In-s [12.5K]
3 years ago
8

Which method(s) can be used to solve a system of equations? Select all that apply. distributing graphing substitution formulas a

ddition modeling
Mathematics
1 answer:
katovenus [111]3 years ago
6 0
Distributing, formulas, and addition
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Find the value of x. Round to the nearest tenth <br> PLEASE HELP
ololo11 [35]

Answer:

x = 38.2°

Step-by-step explanation:

<u> sin 27° </u>  =  <u>  x°  </u>

    11             15

15 · (sin 27°) = 11 · x°

cross-multiply:

6.81 = 11x

6.81 / 11 = x

x = 0.619

sin^-1 (0.619) = 38.2°

3 0
2 years ago
15 increased by a number x
aleksandrvk [35]
15 increased by a number x: 15 + x
a number x more than −14: x > -14
t<span>he difference of 7 and a number x: </span>7/x
3 0
3 years ago
Find the equation of a line parallel to – 2y = –2 – 2x that passes through the<br> point (9,-9).
riadik2000 [5.3K]

Answer:

2y + 2x = 0

Step-by-step explanation:

First you have to find the slope of the line.

Parallel lines have same slope

2y = -2-2x

y=-1-1x, y=-1x-1

slope = -1

Use point slope formula

y-y=m(x-x)

y-(-9) = -1(x-9)

y+9 = -1(x-9)

y+9 = -1x+9

y = -x

y + x = 0

2y + 2x = 0

7 0
2 years ago
What is the domain of f(x) = √x – 4 over the set of real numbers?​
nikklg [1K]

Answer:

<u>(2) x </u>\geq \\<u> 4</u>

Step-by-step explanation:

Given the sqrt(x),  x \geq \\ zero

So, given sqrt(x -4),  x -4 \geq \\ 0

Now solve for x

x - 4 \geq \\ 0

x \geq \\ 4

6 0
2 years ago
In the past month, Amy rented 7 video games and 4 DVDs. The rental price for each video game was $3.30. The rental price for eac
Lera25 [3.4K]

Answer:

$39.90

Step-by-step explanation:

if each video game cost $3.30, and she rented 7, then you multiply $3.30 by 7, to get $21.10, and if each DVD was $4.20, and she rented 4, then its $4.20x4= $16.80

after that you just add the two total costs together, which is $23.10+$16.80=$39.90

8 0
3 years ago
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