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Elza [17]
2 years ago
8

The perimeter of a triangle is 7a-11b . If two of its sides are 2a+b and a-9b, what is the third side?

Mathematics
1 answer:
Masteriza [31]2 years ago
5 0

Answer:

4a plus or minus 1b

Step-by-step explanation:

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A triangle has coordinates A(6,1), B(6,5), and C(4,1). If the triangle is rotated 180 degrees, what are the new coordinates of t
4vir4ik [10]

Answer:

A(-6,-1) B(-6, -5) C(-4, -1)

Step-by-step explanation:

When a coordinate is rotated 180 degrees, they go from (x,y) to (-x,-y), so all you need to do is multiply every coordinate by -1

6 0
3 years ago
The admission fee is $1.50 for children and $4.00 for adults. If 2700 people enter and $7800 is collected how many children and
mash [69]

Number of children attended is 1200 and number of adults attended is 1500

<h3><u>Solution:</u></h3>

Given that,

Admission fee for each children = $ 1.50

Admission fee for each adult = $ 4.00

Let "c" be the number of children attended

Let "a" be the number of adults attended

Given that 2700 people enter and $7800 is collected

Number of children attended + number of adults attended = 2700

c + a = 2700  -------- eqn 1

Also given that $7800 is collected

Number of children attended x Admission fee for each children + number of adults attended x Admission fee for each adult = 7800

c \times 1.50 + a \times 4 = 7800

1.5c + 4a = 7800 -------- eqn 2

Let us solve eqn 1 and eqn 2 to find values of "a" and "c"

From eqn1,

a = 2700 - c ----- eqn 3

Substitute eqn 3 in eqn 2

1.5c + 4(2700 - c) = 7800

1.5c + 10800 - 4c = 7800

-2.5c = -3000

c = 1200

Therefore from eqn 3,

a = 2700 - 1200

a = 1500

Therefore number of children attended = c = 1200

number of adults attended = a = 1500

3 0
3 years ago
Karissa deposits $165 into a new savings account. The account earns 2.75% simple interest per year. Karissa plans on keeping the
enyata [817]

Answer:$382

Step-by-step explanation:

To get The interest for 4 years

Amount*rate*time*duration

165*0.0275*12*4=$217

165+217=$382

3 0
3 years ago
Find an equation for the perpendicular bisector of the line segment whose endpoints are
Luba_88 [7]

Answer:

y = 3x + 7

Step-by-step explanation:

3 0
3 years ago
What is the surface area of a cylinder with a radius of seven and the height is 28 both in inches?
lara31 [8.8K]
I am not really sure about this answer, but it is 4308.08in
Hope this helps!
3 0
3 years ago
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