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alisha [4.7K]
3 years ago
7

About 13 out of 20 homes have a personal computer. On a street with 60 homes, how many would you expect to have a personal compu

ter?
Mathematics
2 answers:
Aleks04 [339]3 years ago
5 0
This can be solved using a ratio. The ratio is: 13/20=x/60 this would then become 20x= 780  divide both sides by 20 and you get x=39. the answer is 39
Mashutka [201]3 years ago
3 0
It can go in a more simple way.

20 goes into 60 3 times, this 3 being the multiplier.

13 x 3 = 39
_
20 x 3 = 60

39:60 homes on a street with 60 homes have personal computers.
:D
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In the triangle below, determine the measure of angle C
OverLord2011 [107]
Angle C is 4 square root 11 or in decimals 13.266
8 0
3 years ago
If the ecpression (2x 4) 3 was written in ax b forrm what is the sum of a and b
WITCHER [35]

Answer:

11

Step-by-step explanation:

8 0
3 years ago
In △ABC, m∠A=19°, a=13, and b=14. Find c to the nearest tenth.
34kurt
We know that
Applying the law of sines

step 1
Find the value of angle B
a=13
b=14
A=19°
so

 \frac{a}{sin A} = \frac{b}{sin B} \\ a*sin B=b*sin A \\ sin B= \frac{b}{a}*sin A \\ sin B= \frac{14}{13} *sin 19 \\ sin B=0.3506 \\ B=arc sin(0.3506) \\ B=20.5°

step 2
with angle A and angle B find the angle C
A+B+C=180-----> solve for C
C=180-(A+B)------> C=180-(19+20.5)-----> C=140.5°

step 3
\frac{a}{sin A} = \frac{c}{sin C} \\ a*sin C=c*sin A \\ c=a* \frac{sin C}{sin A}  \\ c=13* \frac{sin 140.5}{sin 19}  \\ c=25.4

the answer is
the value of c is 25.4



3 0
3 years ago
10. Create a scenario to explain why 3P3=3!.
Flauer [41]

Step-by-step explanation:

Permutation :The number of ways to choose a sample of r elements from a set of n distinct objects where order does matter and replacements are not allowed.

                                  nPr = \frac{n!}{(n-r)!}

Factorial : There are n! ways of arranging n distinct objects into an ordered sequence.  

Considering a situation when n = r in a permutation, nPr reduces to n!, a simple factorial of n.

Proof: 3P3 = 3!

n = 3 and r = 3

                                   3P3 = \frac{3!}{(3-3)!}

                                   3P3 = \frac{3!}{(0)!}

But 0! = 1

                                    3P3 = 3!

3 0
3 years ago
Read 2 more answers
*26 POINTS* pls help
Doss [256]

Answer:

If you want to draw a perpendicular line from a point on a line, you would measure a 90 degree angle from that point and then draw the line outward.

Explanation

On the other hand, if you wanted to draw a perpendicular line connecting a line and a point off of the line, you would have to connect the point to the location on the line that forms a 90 degree angle.

Both methods involve making a 90 degree angle between two lines. Can you think of any other similarities?

5 0
2 years ago
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