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kogti [31]
3 years ago
8

What is the value of the expression 4(80+ b) - 12, where b=20?

Mathematics
2 answers:
levacccp [35]3 years ago
7 0

Answer:

B. C which is the answer.

const2013 [10]3 years ago
3 0

Answer:

Step-by-step explanation:

c=388

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The length of a rectangle is 18 centimeters less than five times it's width. It's area is 35 square centimeters. I need to find
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\frac{(5x-18)(x)}{2} =35
(5x-18)(x)=70
5x^2-18x-70=0
By the time you factorize this, you will get
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3 years ago
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4 0
3 years ago
If f(x)=x^2-3x,find f(-18). Show work
scoundrel [369]
Answer: 378

-------------------------------------
-------------------------------------

Work Shown:

f(x) = x^2 - 3x
f(x) = ( x )^2 - 3*( x )
f(-18) = ( -18 )^2 - 3*( -18 ) ... replace every x with -18; now use PEMDAS
f(-18) = 324 - 3*( -18 )
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f(-18) = 378

6 0
3 years ago
The amount that results when $4,000 is compounded at 6% annually over seven years.
dimulka [17.4K]
The formula is
A=p (1+r)^t
A future value?
P present value 4000
R interest rate 0.06
T time 7 years
A=4,000×(1+0.06)^(7)
A=6,014.52

Interest earned=A-p
6,014.52−4,000=2,014.52

Hope it helps!
8 0
3 years ago
11. What is the value of y when 10y-5=20
ella [17]

Answer:

y = 2.5

Step-by-step explanation:

Given

10y - 5 = 20 ( add 5 to both sides )

10y = 25 ( divide both sides by 10 )

y = 2.5

4 0
3 years ago
Read 2 more answers
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