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Effectus [21]
3 years ago
15

R^2+15r+56=0 Quadratics factoring

Mathematics
1 answer:
mylen [45]3 years ago
6 0

Step-by-step explanation:

Find the product, sum and factors which are P=56, S=15 and F=8,7 respectively.

r²+15r+56=0

replacing with the factors in the equation

=> r²+8r+7r+56=0

r(r+8)+7(r+8)=0

(r+8)(r+7)=0

=> r= –8 and –7

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Simplify the radical below. sqrt(x^13)
raketka [301]

Answer:

Step-by-step explanation:

√(x^13)= √(x^12)×√x =x^6×√x  

5 0
3 years ago
If angle x=55% and angle y=35, calculate the following 1.cos(x+y) ​
Setler79 [48]

Answer:

cos(X+Y) = cos(55+35) = cos(90) = 0

Step-by-step explanation:

cos(X+Y) = cosXcosY - sinXsinY

cos(55+35) = cos(55)cos(35) - sin(55)sin(35)

cos(55+35) = cos(55)cos(35) - cos(90-55)cos(90-35)

cos(55+35) = cos(55)cos(35) - cos(35)cos(55)

cos(55+35) = 0

cos(90) = 0

4 0
3 years ago
A rectangular prism and its dimensions are shown in the diagram.
Sergeu [11.5K]

Answer:

148.2

Step-by-step explanation:

LA= PH

P= 8.2+8.2+3.2+3.2=22.8 in

H= 6.5 in

PH= 22.8(6.5)= 148.2 in

8 0
2 years ago
A baseball card bought for $75 increases in value by 3% per year. what is the value of the card after 15 years
sammy [17]
If the value of the baseball card increases by 3% per year then we can say that each year the value of the card may be multiplied by 103% = 1.03, thus:

Value after n years = original price*(1.03)^n
Value after 15 years = 75*(1.03)^15
= $116.85
8 0
3 years ago
Heres another 56 points for free. Good Luck :)
murzikaleks [220]

Answer:

Thank you

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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