MATHEMATICS HIGH SCHOOL

Find the value to of each algebraic expression at the given replacement values.

Answers

Answer 1

Answer:

Answer:

-1

Step-by-step explanation:

$x + 3xy \n x = 2 \n y = - (1)/(2)$

Substitute thevaluesinto the equation

$2 + 3(2)( - (1)/(2) ) \n 2 + 6( - (1)/(2) ) \n 2 - 3 \n = - 1$

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What is the sum of the arithmetic sequence 149, 135, 121, …, if there are 28 terms?−1,204 −1,176 −1,148 −1,120

Seriously can any1 help me

Answers

1)
Reasons:
- Given
- Alternate Exterior
- Alternate Interior
- Substitution

2) Reasons
-Given
- Linear Pair
- Alternate Interior
- Substitution

Please help me, I got the answer wrong and I don't what to do

Answers

Answer:

x = 124

Step-by-step explanation:

Firstly yu can move the 6 to the other side...where the equation would be in this form

; fifth root of ( 249 - 2x) = 7 - 6

; fifth root of ( 249 - 2x) = 1

; 249 - 2x = 1^5

; 2x = 248...,then divide both sides by 2

; Hence..., x = 248/2

Given: F(x) = 2x - 1; G(x) = 3x + 2; H(x) = x 2 Find F{G[H(2)]}.

Answers

Answer:

Step-by-step explanation:

Evaluate from the inside out, that is

Evaluate h(2) , then use the value obtained to evaluate g(x) and the value obtained here to evaluate f(x) , that is

h(2) = 2² = 4 , then

g(4) = 3(4) + 2 = 12 + 2 = 14, then

f(14) = 2(14) - 1 = 28 - 1 = 27

What is the measure of the missing angle?

Answers

Answer:

60 degrees

Step-by-step explanation:

Every Triangle has an angle of 180degrees

so if we add all of the written angles which is 25 + 35 + 60 = 120

we take 180 degrees and subtract it with the previous answer (120)

180 - 120 = 60

Thereforeitis60degrees

Answer:

answer is 60

Step-by-step explanation:

because if the angle is 60 degrees anywhere in the triangle means its an equilateral triangle making all the angles 60 degrees

A factory cut 456 feet of twine into 24 pieces. What is the length of each piece, measured in inches?

Answers

456ft = 5472in now divide 5472 by 24 to get 228.

Each piece of string is 228 inches.

the answer is 228 hope this helped !

A student is trying to solve the system of two equations given below: Equation P: y + z = 4 Equation Q: 3y + 7z = 15 Which of the following steps can be used to eliminate the y term? A. –3(y + z = 4) B. 3(y + z = 4) C. –1(3y + 7z = 15) D. –3(3y + 7z = 15)

Answers

look at them
P: 1y
Q: 3y
multiply first equation by -3 becuase 3y-3y=0
-3P
-3(y-z=4) is answer

A is answer

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