Not so good with mathematics

Answers

Answer 1

Answer:

Answer:

2n-7

Step-by-step explanation:

the product of 2 and a number is 2 times a number, so number is n. (this is multiplicaiton) it then becomes 2n. 7 less than that is 2n-7. (If it's less than, it goes after the variables 2n)

Answer 2

Answer:

Explanation:

7 less --> -7

product of 2 and a number --> 2x

Answer:

2x-7

I hope this Helps!!

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The account charged 35 for the first hour of work and 23 for each hour after that. He earned a toatl od 127 how many hours did he work

find the volume of a 4 ft by 2 ft by 3 ft rectangular prism with a cylindrical hole, radius 6 in., through the center

Answers

V = lwh - πr²h
V = (4)(2)(3) - 3.14(¹/₂)²(3)
V = (8)(3) - 3.14(¹/₄)(3)
V = 24 - 3.14(³/₄)
V = 24 - 2.355
V = 21.645 ft³
V = 259.74 in³

If LA and LB are complementary,What is the sum of their measure?

Answers

Answer:

90 degrees

Step-by-step explanation:

How many bones does a human body have?

Answers

It depends one the person but the most average number is 254 bones

The human body has 206 bones, an easier way instead of waiting for someone to answer you could of just searched it up on google hope i helped:)

Pls help me find the operations of 3a^2+4a^2+7a^2

Answers

Answer:

14a^2

Step-by-step explanation:

3a^2+4a^2+7a^2

Combine like terms

Factor out a^2

a^2(3+4+7)

a^2(14)

14a^2

Answer:

14 a²

Step-by-step explanation:

3a² + 4a² + 7a²

collect like terms

(3 + 4 + 7)a² .. ( factor out :- a²)

calculate the sum

14 a²

GIVING BRAINIESTThe time it takes to travel a fixed distance varies inversely with the speed traveled. If it takes Pam 1.5 hours to bike to her fishing spot at 9 miles per hour (how long will it take her if she rides at 12 miles per hour?

Answers

Answer:

Takes her 2 hours

Step-by-step explanation:

Which list of ordered pairs represents solutions to x + y = 2 ? (-4, 6), (0, 2), (4, 2) (-4, -6), (0, 2), (4, 2) (-4, 6), (0, 2), (4, -2)

Answers

The coordinates simply have to be plugged into the equation and determine whether the result is 2.
-4 + 6 =  2
0 + 2 = 2
4 + 2 =  6
-4 + -6 = -10
0 + 2 =  2
4 + 2 = 6
-4 + 6 = 2
0 + 2 = 2
4 + -2 = 2

The solutions (without repeating pairs) are:
(-4, 6), (0, 2), (4, -2)

Answer:

C: (-4, 6), (0, 2), (4, -2)

Step-by-step explanation:

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