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ira [324]
3 years ago
9

What is the length of side a?

Mathematics
1 answer:
sdas [7]3 years ago
6 0

Answer:

where is the picture

Step-by-step explanation:

u need a pic

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Gina, Sam, and Robby all rented movies from the same video store. They each rented some dramas, comedies, and documentaries. Gin
weqwewe [10]
Solve using equations:

Gina 11 = a+b+c
Sam 27 = 2a+3b+2c
Robby 19= a+2b+2c

Gina *2 give 22=2a+2b+2c (subtract this from Sam to give)
b=5

the subtract Robby from Gina *2 to give a=3



[Question 1]
let d = number of dramas Gina rented, c = # of comedies, and t = # of documentaries:

[equation a] d + c + t = 11
[equation b] 2d + 3c + 2t = 27
[equation c] d + 2c + 2t = 19

if we subtract [a] from [c] we get:
[equation d] c + t = 8

if we subtract [c]*2 from [b] we get:
[equation e] -c - 2t = -11 or
[equation e] c + 2t = 11

Now we can subtract [e] from [d] to solve for t:
t = 3

Now put in 3 for t in [d] or [e] to solve for c:
c + 2(3) = 11
c + 6 = 11
c = 5

So she rented 5 comedies and 3 documentaries which leaves 3 dramas (which is answer A)
6 0
3 years ago
Read 2 more answers
The distance from the centroid of a triangle to its vertices are 16cm, 17cm, and 18cm. What is the length of the shortest median
Marizza181 [45]

Answer:

24 \text{cm}

Step-by-step explanation:

Given: The distance from the centroid of a triangle to its vertices are 16\text{cm}, 17\text{cm}, and 18\text{cm}.

To Find: Length of shortest median.

Solution:

Consider the figure attached

A centroid is an intersection point of medians of a triangle.

Also,

A centroid divides a median in a ratio of 2:1.

Let G be the centroid, and vertices are A,B and C.

length of \text{AG} =16\text{cm}

length of \text{BG} =17\text{cm}

length of \text{CG} =18\text{cm}

as centrod divides median in ratio of 2:1

length of \text{AD} =\frac{3}{2}\text{AG}

                                              =\frac{3}{2}\times16

                                              =24\text{cm}

length of \text{BE} =\frac{3}{2}\text{BG}

                                              =\frac{3}{2}\times17

                                              =\frac{51}{2}\text{cm}

length of \text{CF} =\frac{3}{2}\text{CG}

                                              =\frac{3}{2}\times18

                                              =27\text{cm}

Hence the shortest median is \text{AD} of length 24\text{cm}

7 0
3 years ago
HELP HELP HELP Sally can paint a room in 4 hours. Joe can paint a room in 6 hours. How
Dmitry [639]

Answer:

2 hrs, 24 min

Step-by-step explanation:

Sally:  in one hour, she can paint 1/4 of the room.

Joe: in one our, he can paint 1/6 of the room

Hour one: 1/4+1/6=3/12+2/12=5/12

1÷5/12=1*12/5=12/5

12/5= 2 & 2/5 hours, or 2.4 hours, or 2 hrs 24 minutes

6 0
3 years ago
Read 2 more answers
Write the equation in standard form. Then factor the left side of the equation.
allsm [11]
X=3/2, -5 is that what u are asking for
4 0
3 years ago
An account worth $6,000 is earning 7% simple interest annually. How
Oksana_A [137]
The correct answer is 8400
4 0
3 years ago
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