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3 years ago

3(7x+4)-x as an infinite equation

Mathematics

2 answers:

WARRIOR [948]3 years ago

4 0

20x+12 is the answer

Sidana [21]3 years ago

3 0

Answer: 20x+12

Step-by-step explanation:

Distribute the three: 3(7x+4) will be changed to 21x+12-x

Next group like terms, -x+21x=20x

The new equation will be 20x+12

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A recipe from Sally’s "Chocoholic’s Cookbook" requires 70\frac{1}{6} grams of chocolate for each chocolate fudge cake. How many

erik [133]

Answer:

842 grams

Step-by-step explanation:

$70\frac{1}{6} =\frac{421}{6}$

$\frac{421}{6} *12\\\\842$

One cake consists of 421/6 grams of chocolate.

Since Sally wants to give 1 cake to 12 friends, we multiply 421/6 and 12.

To make 12 cakes, she needs 842 grams of chocolate.

3 0

3 years ago

LA and B are vertical angles. If mZA = then find the value of x. (7x – 27) and m B = (3x + 29)°,

zhuklara [117]

we know that

Vertical angles are congruent angles

that means

substitute the given values

(7x – 27)=(3x + 29)

solve for x

7x-3x=29+27

4x=56

x=14

part b)

We know that

Supplementary angles are angles that their sum is equal to 180 degrees

A+B=180

substitute the given values

5x+25+x+17=180

solve for x

6x+42=180

6x=180-42

6x=138

x=23

Find the measure of Angle A

4 0

1 year ago

Sisters Amilia and Bianca play games together often. Let A represent the number of games Amilia wins monthly, and let B represen

Harman [31]

Using addition of variables, it is found that the mean of S is of 73 and the standard deviation is of 8.5.

<h3>What happens to the mean and the standard deviation when two variables are added?</h3>

The mean is the sum of the means.

The standard deviation is the square root of the sum of variances.

In this problem, for variables A and B, we have that:

$\mu_A = 35.5, \sigma_A = 5.1$

$\mu_B = 37.3, \sigma_B = 6.8$

Variable S is the sum of A and B, hence:

$\mu_S = \mu_A + \mu_B = 35.5 + 37.3 = 73$

$\sigma_S = \sqrt{\sigma_A^2 + \sigma_B^2} = \sqrt{5.1^2 + 6.8^2} = 8.5$

The mean of S is of 73 and the standard deviation is of 8.5.

More can be learned about addition of variables at brainly.com/question/26156502

7 0

2 years ago

Write 343 with an exponent by using 7 as the base

pochemuha

7^3 = 343

7×7=48
7×7×7=343

8 0

3 years ago

Read 2 more answers

Plssssssssssssssss helpppppppppppppppppp

dalvyx [7]

Answer: D

Explication: 8z>=16
z>=16/8
z>=2

Zed is bigger or equal to 2 meaning the line has to go to the positive infinity side and it’s equal to 2 so the circle has to be filled

8 0

3 years ago