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suter [353]
2 years ago
12

7x + 4(x+5) I will give brainliest to first person who answers!!!!!!!!!

Mathematics
1 answer:
Vinil7 [7]2 years ago
3 0

Answer:

Its 11x + 20 !!

Step-by-step explanation: :)

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1. FIND THE EQUATION OF THE LINE THAT PASSES THROUGH THE GIVEN POINT (1,2) AND (-1,5)
alina1380 [7]

Answer:

slope: (y₂ - y₁) / (x₂ - x₁)

(5 - 2) / (-1 - 1) = 3/-2 = -3/2

y = -3/2x + b

5 = -3/2(-1) + b

5 = 3/2 + b

b = 3.5

y = -3/2x - 7/2

(5.83 - 1.42) / (4.22 + 0.72) = 4.41/4.94

y = 4.41/4.94x + b

5.83 = (4.41/4.94)(4.22) + b

5.83 = 3.76724696 + b

b = 2.06275304

y = 4.41/4.94x + 2.06

(the numbers are really wacky so i hope thats right, so sorry if it isn't)

7 0
2 years ago
In how many ways can a committee of 3 men and 4 boys be chosen from 7 men and 6 boys so as not to include the youngest boy if th
Ludmilka [50]

Answer:

There are 75 ways to form the committee.

Step-by-step explanation:

The order in which the people are chosen is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

Considering the eldest has to be there, 2 men from a set of 6 and 4 boys from a set of 5(excluding the youngest), so:

T = C_{6,2}C_{5,4} = \frac{6!}{2!4!} \times \frac{5!}{1!4!} = 3*5*5 = 75

There are 75 ways to form the committee.

6 0
2 years ago
21. Estimate the annual wages for a cashier who earns $11<br> an hour.
DerKrebs [107]

Answer:

~22,000 /yr

Step-by-step explanation:

52 weeks/yr

5 day work week (8 hrs a day 40hrs a week)

comes out to 22,880 but mandatory holidays would be lower

3 0
2 years ago
Use the working backward method to find the solution of the equation.
Dahasolnce [82]

Answer:

y=2

Step-by-step explanation:

7y-1=13

+1 +1

7y=14

/7 /7

y=2

3 0
2 years ago
Read 2 more answers
Add or subtract the polynomials<br> (8x3+3x-2)+(9x2-7+3x-2x3)
crimeas [40]

Answer:

10x^3+9x^2-9

Step-by-step explanation:

8x^3+2x-2+9x^2-7+2x-2x^3 - Combine like terms

10x^3+9x^2-9

4 0
2 years ago
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