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Tresset [83]
3 years ago
13

Evaluate the following function is f(x)=3x-2 and g(x)=5x+1 what is -2•f(4)+3•g(1)

Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:

work is shown and pictured

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Ted needs an average of at least 70 on his three history test he has scored already 85 and 60 on two test what is the minimum gr
PilotLPTM [1.2K]
So average=(total of scores)/(number of tests)
needs at least average of 70
at least is represented as greater than or equal to or the sign (<u>></u>)
70<u>></u>(total)/(number oftests)

since we have 3 tests, we have to have 3 scores so
70<u>></u>(x+y+z)/3
he scored 85 and 60
70<u>></u>(x+85+60)/3 (doesn't matter which to subsitute)
70<u>></u>(x+145)/3
multiply obht sides by 3
210<u>></u>x+145
subtract 145 from both sides
65<u>></u>x
he needs to get at leas 65 on his third test





4 0
3 years ago
Help me simplify this question for me
Gnoma [55]
The answer is y= -4/7x+2

explanation
1. subtract 4x from both sides
2. divide every term by 7
4 0
3 years ago
Read 2 more answers
Solve for y: 2½y = ⅝ Answer in simplest form.
MrMuchimi
<h2>1/4 or 0.25</h2>

Step-by-step explanation:

2 \frac{1}{2} y =  \frac{5}{8}

Convert Mixed number to improper fraction.

2 \frac{1}{2}  =  \frac{5}{2}

Equate

\frac{5}{2} y =  \frac{5}{8}

Cross Multiply

5y \times 8 = 2 \times 5 \\ 40y = 10

Divide both sides of the equation by 40

\frac{40y}{40}  =  \frac{10}{40}

Simplify

y =  \frac{1}{4}

5 0
3 years ago
What is absolute value? can you solve problems using the absolute value?
vesna_86 [32]
An absolute value is positive value of any value. So the abs value of -28 is 28. The abs value of 67 is 67. Makes sense?

If it were |27-3| for example, treat the inside of a abs as parenthesis, so you must complete PEMDAS inside of it to reduce the equation to |24|, unless you wanted it to become |27| - |3|.

For functions, this becomes slightly different and more difficult, especially when adding a variable such as x. Look below for a sample equation.

|2x-3|=1

This equation will actually have (and most others) 2 solutions for x. To find these, you’ll need to multiply the inside of the abs by -1 for one equation, and leave it as it is for the other!

2x-3=1 -(2x-3)=1

Now you have to solve BOTH equations to get your correct x-value answers.

For the first listed equation:

2x=4

x=2

For the second listed equation:

-2x+3=1

-2x=-2

x=-1

So you get the x-values -1 and 2 which both make the parent function true!
3 0
3 years ago
Read 2 more answers
Help help help pls ✨✨✨
Leona [35]

Answer:

change: $0.32

Step-by-step explanation:

The top left

3 0
3 years ago
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