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arlik [135]
3 years ago
9

What is -4(7x+5)=-160

Mathematics
2 answers:
stiks02 [169]3 years ago
7 0

To get rid of the parantheses we must multiply -4 times anything inside the parantheses.

<em>-4(7x+5)=-160</em>

<em>-28x-20=-160</em>

Add 20 to both sides of the equation.

<em>-28x-20=-160</em>

<em>-28x=-140</em>

Divide both sides by -28

<em>-28x/-28=-140/-28</em>

<em>x=5</em>

<em>Our final answer is 5 </em>

Hope this helps!

puteri [66]3 years ago
6 0

Answer is -23

Add 4 from both sides

Subtract 5 from both sides

Then divide 7

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A bag contains 5 red marbles, 10 blue marbles, and 14 yellow marbles. If Jen selects a marble from the bag without looking, what
Darina [25.2K]

Answer:

The answer to your question is  0.83 or 83%

Step-by-step explanation:

Data

5 red marbles

10 blue marbles

14 yellow marbles

Process

1.- Calculate the total amount of marbles

    Total amount = 5 red + 10 blue + 14 yellow

     Total amount = 29 marbles

2.- Calculate the amount of marbles that are not red

     No red marbles = 10 + 14

                                = 24 marbles

3.- Calculate the probability

Probability of not pulling a red marble = \frac{no red marble}{total amount of marbles}

Probability of not pulling a red marble = \frac{24}{29} = 0.83 or 83%

5 0
3 years ago
My equation is wrong so can someone pls explain how to do it ?? thank you
RoseWind [281]

Answer: (a)350 + 0.05x ≥ 600 (b) $5000


Explanation:

Fixed Salary = $350

Variable = 5% on sales

Let x the sales amount


Equation: 350 + 0.05x ≥ 600


350 + 0.05x ≥ 600

0.05x ≥ 600 - 350

0.05x ≥ 250

x ≥ $5000

6 0
3 years ago
Help with this for brainliest
AysviL [449]

Answer:

1

Step-by-step explanation:

-9-(-10)

-9 + 10 (double negative makes a positive)

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4 0
3 years ago
A line has a slope of 8 and includes the points (1, z) and (2,8). What is the value of z?
NISA [10]

The value of z is zero

Step-by-step explanation:

The slope is the steepness of the line.

The formula for slope is given by:

m=\frac{y_2-y_1}{x_2-x_1}\\Here\\(x_1,y_1)\ are\ the\ coordinates\ of\ first\ point\ on\ line\\(x_2,y_2)\ are\ the\ coordinates\ of\ second\ point\ on\ line

Here

(x1,y1) = (1,z)

(x2,y2) = (2,8)

So,

m=\frac{y_2-y_1}{x_2-x_1}\\8 = \frac{8-z}{2-1}\\8=\frac{8-z}{1}\\8-8 = -z\\z = 0

The value of z is zero

Keywords: slope, Line

Learn more about slope at:

  • brainly.com/question/10879401
  • brainly.com/question/10940255

#LearnwithBrainly

6 0
3 years ago
Which unit would be best for measuring the thickness of a coin
choli [55]

Answer: Milimeters (mm)

Step-by-step explanation:

8 0
3 years ago
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