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givi [52]
3 years ago
14

Pls help me with this

Mathematics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

A = kr²

Step-by-step explanation:

Given A is directly proportional to r² then the equation relating them is

A = kr² ← k is the constant of variation

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I need step by step help, thank you:)
prohojiy [21]
The area of a triangle is 1/2 of base times height
for ΔPQS, the base is PS=6, the area is 16.5, so the height is 16.5×2÷=5.5
the height of the triangles is also the height of the trapezoid. 
7 0
3 years ago
I need to find the least common denominator of x+2/x^2+2x-3 , x-7/x^2+5x+6
grin007 [14]

Answer:

(x + 3)(x - 1)(x + 2)  

Step-by-step explanation:

The fractions are:  

\dfrac{x + 2}{x^{2} + 2x - 3} \text{ and } \dfrac{x - 7}{x^{2} + 5x + 6}

Factor each denominator  

x^{2} + 2x - 3 = (x + 3)(x - 1)\\x^{2} + 5x + 6 = (x + 3)(x + 2)

We must find the least common multiple of the denominators.  We take the maximum power of each separate factor.

      Factors of first fraction = (x + 3) × (x - 1)

Factors of second fraction = (x + 3)             × (x + 2)

                                   LCM = (x + 3)(x - 1)(x + 2)

The lowest common denominator of the two fractions is (x + 3)(x - 1) (x + 2).

4 0
3 years ago
In the monthly payment formula , what value would you put for r if the interest rate is 5.7%?
natulia [17]
In the monthly payment formula r is the percentage rate as a decimal.

To turn a percentage into a decimal, move the decimal point 2 places to the left.
 5.7% becomes 0.057

3 0
3 years ago
Read 2 more answers
2. How are the integers and rational numbers different?
hoa [83]

Answer:

Here --->

Step-by-step explanation:

Integers are "whole numbers" which is negative numbers, positive numbers, and 0. rational numbers are fractions, decimals, negative numbers, positive numbers, and 0. Hope this helps! :]]

3 0
3 years ago
7 is a solution to the equation 3n + 9 = 33. true false
bagirrra123 [75]

Answer:

No

Step-by-step explanation:

3n+9=33

    -9=-9

3n= 24

3n/3=24/3

n=8

5 0
3 years ago
Read 2 more answers
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