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cluponka [151]
2 years ago
9

(w+6)(w+7) how to solve

Mathematics
2 answers:
Makovka662 [10]2 years ago
8 0
(w+6)(w+7) = 0

w(w) + w(7) + 6(w) + 6(7) = 0
w² + 7w + 6w + 42 = 0
w² + 13w + 42 = 0

w + 6 = 0
w = -6
<span>w² + 13w + 42 = 0
</span>-6² + 13(-6) + 42 = 0
36 - 78 + 42 =
78 - 78 = 0
0 = 0

w + 7 = 0
w = -7

w² + 13w + 42 = 0
-7² + 13(-7) + 42 = 0
49 - 91 + 42 = 0
91-91 = 0
0=0
Wewaii [24]2 years ago
6 0
(w+6)(w+7)
= w^2+ 7w+ 6w+ 6*7
= w^2+ (7w+ 6w)+ 42 (combine like terms)
= w^2+ 13w+ 42

The final answer is w^2+ 13w+ 42~
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2 years ago
In 5 minutes a conveyor belt moves 300 pounds of receyclable aluminum from the delievery truck a smaller belt moves the same qua
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Answer:

It will take 3.214 minutes.

Step-by-step explanation:

<em>It is given that, the conveyor belt transports 300 cans in 5 mins and the smaller belt transports 300 cans in 9 minutes.</em>

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and of smaller belt is,

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5 0
3 years ago
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The sphere area of a sphere is 200.96 square centimeters. What is the approximate volume of the sphere? Use 3.14 for pi. Round y
julsineya [31]

We are given

area of sphere is 200.96cm^2

it means that we are given surface area

so, we can use surface area formula

S=4\pi r^2

where S is surface area

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so, firstly we need to find radius or r

200.96=4\pi r^2

we can solve for r

r=3.9989cm

now, we can find volume

V=\frac{4}{3} \pi r^3

we can plug r

V=\frac{4}{3} \pi (3.9989)^3

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