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ANTONII [103]
3 years ago
6

A:b=5:3 find the value of 3a+4b:5a+2b​

Mathematics
2 answers:
Over [174]3 years ago
8 0

Answer:

Step-by-step explanation:

a:b=5:3 the value of 3a+4b:5a+2b

(3*5)+(4*3):(5*5)+(2*3)

15+12:25+6

=27:31

Romashka-Z-Leto [24]3 years ago
7 0

Yo sup??

a:b=5:3

a/b=5/3

a=5x

b=3x

3a+4b:5a+2b

=15x+12x:25x+6x

=27x:31x

=27:31

Hope this helps.

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5. Troy wants to find the distance between his house on one side of the park and his school on the other
VLD [36.1K]

Answer:

well

Step-by-step explanation:

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3 0
3 years ago
7/8 & -8/7 are these line slope perpendicular or parallel or neither
muminat

Answer:

Perpendicular!

Step-by-step explanation:

If they were parallel they would have the exact same slope. If they are perpendicular their slopes would be opposite reciprocals of each other... which they are. Another trick to tell if two slopes are perpendicular is to multiply them by each other and if the answer equals -1 they are perpendicular:

7/8 • -8/7 = -1/1 = -1

7 0
3 years ago
The average rate of change from x = 0 to x = 15 is about −4.667. How does the average rate of change from x = 0 to x = 20 compar
Amanda [17]
First we calculate the ambio rate from x = 0 to x = 15:
 We have:
 R = ((80-10) / (0-15))
 R = -4.666666667
 We now calculate for the entire interval:
 from x = 0 to x = 20:
 R = ((80-2) / (0-20))
 R = -3.9
 Answer:
 What is the average rate of change over the entire slide?
 R = -3.9
 The average rate of change from x = 0 to x = 15 is about -4.667. How does the average rate change from x = 0 to x = 20 compare to this number?
 The percentage difference is:
 (-3.9 / -4.666666667) * (100) = 83.57142857%
 100-83.57142857 = 16.42857143%
6 0
4 years ago
Josiah earned 150 points on a video game the first time he played and 270 points the second game . What is the percentage change
Crank
The answer is 180 percent
5 0
3 years ago
Read 2 more answers
PRECALCULUS<br> Please look at every picture and answer all questions, thanks.
Marta_Voda [28]
1. so it has to have every x is one y and every y has one x
graph them
we see that the only ones that are one to one are the first one, the 2nd one and the 4th one

2.
solve for x and replace with f⁻¹(x) and y with x
minus 8 and cube both sides
(y-8)³=x-2
add 2
(y-8)³+2=x
replace
f⁻¹(x)=(x-8)³+2
first one


3.
this is a one to one function because theer is no vertical line that could intersect the graph more than once
ah, I see, you're program has a different one to one definition, no horizontal or vertical line can cross, lemme edit te first question again
answer is 2nd option


4. a neat trick is this:
the domain of f(x) is the range of f⁻¹(x)
the range of f(x) is the domain of f⁻¹(x)

the domain of f(x)=1/(3x+2)
hmm, can't divide by 0 so set denomenator to 0
3x+2=0
3x=-2
x=-2/3
domain is all real numbers except -2/3
(-infinity,-2/3)U(-2/3,infinity)
that's the range of f⁻¹(x)

range
ok, hmm, range is from positive initny to 0 then from 0 to positive inifnty, not including 0

so the domain of f⁻¹(x) is (-∞,0)U(0,∞)
range of f⁻¹(x) is (-∞,-2/3)U(-2/3,∞)
first option
8 0
3 years ago
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