2 years ago

Use the x-coordinates A and C to calculate AC without counting

Mathematics

1 answer:

alexandr1967 [171]2 years ago

3 0

21 its 21 because it is 21

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If we are given the value of α. How can we find the value of β?

Cloud [144]

Answer:

β = 140 - α

we know that the "missing" angle is 40° since 40 + 140 = 180

we also know that the total sum of angles in a triangle is 180

so β = 180 - 40 - α

or β = 140 - α

Step-by-step explanation:

4 0

3 years ago

T a linen sale Mrs. Earle bought twice as many pillowcases for $2 each as sheets for $5 each. If she spent less than $40, not in

Anettt [7]

For this case, the first thing we must do is define variables:
x: number of pillowcases
y: number of sheets
We now write the system of equations:
2x + 5y = 40
x = 2y
Solving the system we have:
x = 8.9
y = 4.4
Answer:
The maximum number of pillowcases she could have purchased is:
x = 8 (spent less than $ 40)

3 0

3 years ago

What is the complete factorization of r2 - 6r - 9s2 + 9? A) (r - 3 + 3s)(r - 3 - 3s) B) (r + 3 + 3s)(r - 3 - 3s) C) (r - 3 + 3s)

nikitadnepr [17]

$r^2-6r-9s^2+9=r^2-6r+9-9s^2=r^2-2\cdot r\cdot3+3^2-9s^2\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=(r-3)^2-9s^2=(r-3)^2-(3s)^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(r-3-3s)(r-3+3s)\to A$

6 0

3 years ago

Please solve this question asap :)

Ray Of Light [21]

Answer:

36.695 approx 36.7

Step-by-step explanation:

find the area of the top triangle and then add it to the area of the bottom rectangle

Area of the triangle: (bh)/2

3.5*4.1=14.35

14.35/2=7.175

Area of the rectangle: bh

4.1*7.2=29.52

Total (add the two values)

29.52+7.175

=36.695

7 0

3 years ago

Read 2 more answers

A car dealership sold 212 cars in 4 months. At what rate did the dealership sell cars in cars per month?

valentinak56 [21]

Answer: 59 cars per month

Step-by-step explanation:

6 0

2 years ago