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Flura [38]
3 years ago
15

Evaluate the expression

Mathematics
1 answer:
sergey [27]3 years ago
4 0

Answer:

Is -15

Step-by-step explanation:

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26
Triss [41]

<u>Corrected Question</u>

Ping lives at the corner of 3rd Street and 6th Avenue. Ari lives at the corner of 21st Street and 18th Avenue. There is a gym 2/3 the distance from Ping's home to Ari's home.  Where is the gym?

  • 9th Street and 10th Avenue
  • 12th Street and 12th Avenue
  • 14th Street and 12th Avenue
  • 15th Street and 14th Avenue

Answer:

(D)15th Street and 14th Avenue

Step-by-step explanation:

Ping's Location: (3rd Street, 6th Avenue)

Ari's Location: (21st Street, 18th Avenue)

The gym is at point P which is \dfrac{2}{3} the distance from Ping's home to Ari's home.

That is, Point P divides the line segment in the ratio 2:1.

We use the section formula:

(x,y)=\left(\dfrac{mx_2+nx_1}{m+n}, \dfrac{my_2+ny_1}{m+n}\right)

m:n=2:1, (x_1,y_1)=(3,6), (x_2,y_2)=(21,18)

=\left(\dfrac{2*21+1*2}{2+1}, \dfrac{2*18+1*6}{2+1}\right)\\=\left(\dfrac{45}{3}, \dfrac{42}{3}\right)\\=(15,14)

The gym is located at 15th Street and 14th Avenue.

6 0
3 years ago
Someone please help
kkurt [141]
First, make y negative

y=-x-1

From there, you would go down 1 and right 1

3 points you could choose are (0,-1), (-2,1), and (-3,2)
7 0
3 years ago
Find zeros of x^4-5x^2+4
OLEGan [10]
When you multiply 2and 5
4 0
4 years ago
An unknown number is increased by -3. the result is -8<br> find the unknown number
Rudiy27

Answer:

The unknown number is -5.

Step-by-step explanation:

-3 + -5 = -8

-8 - -3 = -5

-8 - -5 = -3

6 0
2 years ago
What is the circumference (in inches) of a circle with radius of 5 inches? Use 3.14 for π.
ahrayia [7]
Answer=31.42(rounded to the 100th)

C=2pi(r)

So 2*5=10

Then 10*pi and you get your circumference
5 0
3 years ago
Read 2 more answers
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