MATHEMATICS HIGH SCHOOL

Last year,Mark was 46 inches tall.This year,Marks height is 3 inches less than peters height.Peter is 51 inches tall.How tall is mark?Write an equation to represent the situation.
Then solve the equation to answer the problem

Answers

Answer 1
Answer: 51-3=x (Mark's height)
 He is 48 inches tall.
Answer 2
Answer: 12 in = 1 ft
46 / 12 = 3 r 10 in - last year

51 / 12 = 4 r 3 in
hope that helps

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Estimating Sums of Single Digit NumbersWhich of the following represents the most accurate estimation of 4 + 8? is the answer 5, 10, 20 or 25

Answers

10
We can round 4 down to 0 since it is less than 5 and round 8 up to 10 since it is greater than 5. Giving:
0 + 10 = 10

The greatest common factor of 3m^2n+12mn^2 is

Answers

3m²n + 12mn²
3mn(m) + 3mn(4n)
3mn(m + 4n)

The GCF of this expression is 3mn.

-2.678 + 4.5 + (-0.69)

Answers

1.132isthe correct answer of this question

State the practical meaning of the slope and y-intercept for the situation described. The cost, in dollars, of retaining the services of a computer repairman in Anchorville is given by C = 48x + 18, where x is the number of hours worked. a. 48 signifies the hourly rate, and 18 signifies the overhead charge. c. 18 signifies the hourly rate, and 48 signifies the overhead charge. b. -48 signifies the hourly rate, and 18 signifies the travel cost.

Answers

The practical meaning of the slope and y - intercept of the linear equation, C = 48x + 18 is that 48x is the variable cost depending on the number of hours and 18 is the fixed cost or the overhead change. Hence, the answer to the question above is letter A. 

Answer:

answer is A

Step-by-step explanation:

Simplify the expression: 3x + 5 + 7x=

Answers

The answer would be 10x + 5

Hello!

The answer is 10x + 5!

Hopefully this helps! <3 ^^

A student is trying to solve the set of two equations given below:Equation A: x + z = 6
Equation B: 2x + 4z = 1

Which of the following is a possible step used in eliminating the z-term?

Multiply equation B by 4.
Multiply equation A by 2.
Multiply equation A by −4.
Multiply equation B by 2.

Answers

If you would like to eliminate the z-term, you can do this using the following steps:

x + z = 6       /*(-4)
2x + 4z = 1
_____________
-4x -4z = -24
2x + 4z = 1
_____________
-4x + 2x = -24 + 1
-2x = -23

x = 23/2

The correct result would be x + z = 6       /*(-4); multiply equation A by -4.

A possible step which can be used in eliminating the z-term is: C. multiply equation A by -4.

Given the following data:

  • x + z = 6    ........equation A.
  • 2x + 4z = 1   ......equation B.

What is a set of equations?

A set of equations is also referred to as a system of equations and it can be defined an algebraic equation that has only two (2) variables, which can be solved simultaneously.

In order to eliminate the z-term, we would subtract the second equation from 4 times the first equation:

Multiplying the first equation by 4, we have:

4[x + z = 6] = 4x + 4z = 24

Subtracting the two equations, we have:

[4x + 4z - 24 - 2x - 4z - (-1)] = 0

2x - 23 = 0

2x = 23

x = 23/2

x = 11.5.

In conclusion, a possible step which can be used in eliminating the z-term is to multiply equation A by -4.

Read more on elimination method here: brainly.com/question/11201494

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