Can some one help me plz and thank u

Answers

Answer 1

Answer: replace f(x) wih y
switch all x wih y and y with x
solve for y
replace y with h(x)

f(x)=5/3x-2/7
y=5/3x-2/7
x=5/3y-2/7
x+2/7=5/3y
[3(x+2/7)]/5=y
(3x+6/7)/5=y
(21x+6)/35=y
(21x+6)/35=h(x)

h(x)=(21x+6)/35

last option is correct

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2. Kelsea needs a test average of at least 90 to get an "A-" this marking period in math. Her three test gradesare 87,91 and 86. What score must she get on her fourth test to receive at least an A- ?
Define variable:
Equation:
Solution:

can someone check this please :)

Answers

Answer:

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

First three Kelsea's test grades : 87, 91 and 86

2. What score must she get on her fourth test to receive at least an A- ?

Define variable: x that represents the grade needed by Kelsea on her fourth test to receive at least an A-

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Now you can understand if the previous work you did is correct

Mateo is making 2Gallons of fruit punch. How many pints of fruit punch is he making

Answers

1 gallon = 8 pints
so if we times that by 2
we get 16
so 16 pints is your answer

16 pints because 1 gallon is 8 pints and 2x8=16

Equations that equal 6 and 7 using only the numbers 1,7,8,9

Answers

Possible options:

1 x 8 + 7 - 9 = 6

Hope it helped,

BioTeacher101

One that works with PEMDAS:

7×1+8-9=7

This works as follows; 7×1=7+8=15-9+7

And another, but without regard for PEMDAS:

7+8×1-9=6

This works as follows; 7+8=15×1=15-9=6

How many complex roots does the equation below have?X6 + x3 +1 = 0
The number of complex roots is

Answers

Answer:

Step-by-step explanation:

Can you explain how complex fractions can be used to solve problems involving ratios?

Answers

example: (1/5)/(4/13)=(1/5)*(13/4)=13/20

How do you subtract an integer from another integer without using a number line or counters? Give an example.

Answers

For example, if you have -12 - (-16), you just add the absolute value of the two numbers and put a - in front of it. 12 + 16 = 28. Now just put the sign in front of it and your done. -28 is the answer.

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Why is this correct idkidkidkidkidkidk