3 years ago

Nine years less than 5 times the age a

Mathematics

2 answers:

hichkok12 [17]3 years ago

4 0

5a-9
I think this is the answer I am a little unsure of what the question is.

aev [14]3 years ago

4 0

The answer to the following is 5a-9

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When you are given two angle measures and the length of the included side, do you get a unique triangle

Alenkasestr [34]

Yes ...you get a unique triangle.

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3 years ago

A train travels 42 kilometers in 15 minutes. How far will the train travel in 3 hours at that speed?

solniwko [45]

The answer would be C to this question.

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3 years ago

Show your work on how you got the answer<br><br> please helppp

skelet666 [1.2K]

Answer:

250

Step-by-step explanation:

4/16 = 1/4 = .25

When dividing exponents, subtract the bottom from the top, so $10^{5}$ ÷ $10^{2}$ = $10^{3}$

So, .25 * $10^{3}$ = 250

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2 years ago

The sum of the areas of two circles is 8pie square meters. Find the length of a radius of each circle ifone of them is twice as

NeX [460]

Nice

area=pir^2
the areas are
pir^2+pi(2r)^2
they add to 8pi

8pi=pir^2+pi(2r)^2
undistribute pi
8pi=pi(r^2+(2r)^2)
divide both sides by pi
8=r^2+(2r)^2
expand
8=r^2+4r^2
add
8=5r^2
divide by 5
8/5=r^2
sqrt both sides
√(8/5)=r
double since it is double
2√(8/5) is radius of bigger aka (4√10)/5

radius=(4√10)/5

5 0

3 years ago

3+×/2=10 <br> Is ×/2=7<br> And does ×=14

adoni [48]

$3+\dfrac{x}{2}=10\qquad|\text{subtract 3 from both sides}\\\\\dfrac{x}{2}=7\qquad|\text{multiply both sides by 2}\\\\\boxed{x=14}$

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3 years ago