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Aneli [31]
3 years ago
10

Find all solutions by factoring. c? + 13c + 40 = 0

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

Answer: c = -5, -8

Step-by-step explanation:

c^2 +13c+40=0

(c+5)(c+8)=40

c = -5, -8

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Each container must hold exactly 1 litre of water Each container must have a minimum surface area
Arada [10]

The containers must be spheres of radius = 6.2cm

<h3>How to minimize the surface area for the containers?</h3>

We know that the shape that minimizes the area for a fixed volume is the sphere.

Here, we want to get spheres of a volume of 1 liter. Where:

1 L = 1000 cm³

And remember that the volume of a sphere of radius R is:

V = \frac{4}{3}*3.14*R^3

Then we must solve:

V = \frac{4}{3}*3.14*R^3 = 1000cm^3\\\\R =\sqrt[3]{  (1000cm^3*\frac{3}{4*3.14} )} = 6.2cm

The containers must be spheres of radius = 6.2cm

If you want to learn more about volume:

brainly.com/question/1972490

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6 0
2 years ago
I don’t understand this at all help please
Talja [164]

Answer:

225 km^2

Step-by-step explanation:

Area of a trapezoid: ((Base 1 + Base 2) x h) / 2

(11 + 19) x 15 / 2

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5 0
3 years ago
A cyclist rides at a constant speed of 15 miles per hour. At this speed, about how long would it take the cyclist to ride from G
goblinko [34]

Answer: 5.61333333 h

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Step-by-step explanation:

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1h = 15 miles

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3 0
1 year ago
Convert the following fractions to decimals. go to the thousandths place 1/8
egoroff_w [7]

Answer: There answer is 0.125

Step-by-step explanation:

If you divide the fraction you will see

8 0
3 years ago
Read 2 more answers
How many times larger is 9 × 10^9 than 3 x 10^-4
ratelena [41]
<span>   9 × 10^9
---------------- = 3 x 10^13
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answer
3 x 10^13 times larger</span>
3 0
3 years ago
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