Ask question

Ask question

All categories

3 years ago

14

Simplify: 10x - 3(2x + 5) a) 4x - 15 b) 4x - 5 -36x + 15 c) 7x - 7

2 answers:

Free_Kalibri [48]3 years ago

7 0

10x-3(2x+5)----> 10x-6x+15-------> 4x+15 --------> divide both sides by four and you get x=3.75 or jus x=15÷4(fraction)

Nikitich [7]3 years ago

4 0

<span>10x - 3(2x + 5)
= </span><span>10x - 6x - 15
= 4x - 15

answer
</span><span>a) 4x - 15</span>

You might be interested in

10| x – 4| - 3 > 47

Andrew [12]

Answer:

x < -1 or x > 9

Step-by-step explanation:

$10|x-4|-3>47$

Add 3 to both sides.

$10|x-4|-3+3>47+3$

Simplify.

$10|x-4|>50$

Divide both sides by 10.

$\frac{10|x-4|}{10} >\frac{50}{10}$

Simplify.

$|x-4|>5$

Apply absolute value rule: If $|u|>a,a>0$ then $u < -a$ or $u>a$

$x-4$ or $x-4 >5$

$x-4$

Add 4 to both sides.

$x-4+4$

Simplify.

$x$

$x-4>5$

Add 4 to both sides.

$x-4+4>5+4$

Simplify.

$x>9$

Combine the intervals.

$x$ or $x>9$

8 0

3 years ago

50 points!! Instructions: Find the missing side. Round your answer to the nearest tenth.

postnew [5]

Answer:

16.4 units to the nearest tenth.

Step-by-step explanation:

sin 66 = 15 / x

x * sin 66 = 15

x = 15 / sin 66

= 16.4196

7 0

2 years ago

Write an expression for each phrase

Svetradugi [14.3K]

1. 9 + k - 19

2. 6.7n

3. 37t - 9.85

5. 15 + $\frac{60}{w}$

6. 7 - 3v

7. $5m - \frac{t}{7}$

8. $\frac{p}{14} + \frac{q}{3}$

9. 8 - 9r

8 0

2 years ago

Somebody plz help me with this question!

-BARSIC- [3]

Answer:

Socratic app

Step-by-step explanation:

it will help you

8 0

3 years ago

Find the slope of the line that passes through (23, -30) and (-7, 18).

babymother [125]

Answer:

slope = - $\frac{8}{5}$

Step-by-step explanation:

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (23, - 30) and (x₂, y₂ ) = (- 7, 18)

m = $\frac{18-(-30)}{-7-23}$ = $\frac{18+30}{-30}$ = $\frac{48}{-30}$ = - $\frac{8}{5}$

6 0

3 years ago