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4 years ago

do the points A(-2,-1) , B(1,5), and C(4, 11) lie on the same line? without using a graph, how do you know?

1 answer:

3 0

The points do ie on the same line. They way you can tell is all the "x" numbers are 3 away from each other and all of the "y" numbers are 6 away from each other.

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The perimeter of the triangle shown is 30 inches. What is the length of the longest side of the triangle

Simora [160]

Answer:

The length of the longest side of the triangle is 13 inches

Step-by-step explanation:

step 1

Find the value of x

we know that

The perimeter of triangle is equal to the sum of its three length sides

$P=x+(2x+3)+(4x-8)$

$P=(7x-5) \ in$

we have

$P=30\ in$

substitute

$30=(7x-5)$

solve for x

$7x=30+5\\7x=35\\x=5$

step 2

Find the length of the longest side of the triangle

Remember that in a right triangle, the longest side is the hypotenuse

(2x+3) is the longest side

substitute the value of x

$2(5)+3=13\ in$

4 0

3 years ago

The Burgess family puts its coins in a large jar. When the jar is full, the money is split among the three children. How much do

n200080 [17]

Answer:

9.58

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

At what rate of interest whould rs 1800 amount to 2500 in 2 years

Trava [24]

A = P(1+r)^t
A = amount made after the specified time
P = original amount of money
r = rate
t = time

2500 = 1800 (1 + r)^2
2500/1800=(1800(1+r)^2)/1800
1.3888 = (1+r)^2
1.17851 = (1 +r)
1.17851 - 1 = r
Rate = .17851

7 0

3 years ago

Please help me with 5,7,9

Dahasolnce [82]

What is it tell me.^_^

5 0

4 years ago

solve the system of equations using substitution. 3 multiplied by y equals negative the quantity 1 divided by 2 end of quantity

Bas_tet [7]

3y = -1/2x + 2 . . . . . . . . (1)
y = -x + 9 . . . . . . . . (2)
substituting (2) into (1), we have
3(-x + 9) = -1/2x + 2
-3x + 27 = -1/2x + 2
-1/2x + 3x = 27 - 2
5/2x = 25
x = (2 x 25)/5
x = 10
From (2)
y = -10 + 9
y = -1
solution (10, -1)

6 0

4 years ago