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3 years ago

Computer cost $372 the computer cost $200 less than a phone find the cost of the two items put them a bar model

Mathematics

1 answer:

klasskru [66]3 years ago

5 0

Answer:

Step-by-step explanation:

Computer cost $372 the computer cost $200 less than a phone.

Computer cost = $372

Phone cost = $(200 + 372)

= $ 572

Cost of computer and phone will be

= $(572 + 372)

= $944

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The volume of a cylinder is 30 pie cubic units. A cone shares the same base. The height of the cone is twice the height of the c

bija089 [108]

Given:

The volume of a cylinder is $30 \pi$ cubic units.

A cone shares the same base.

The height of the cone is twice the height of the cylinder.

We need to determine the volume of the cone.

Height of the Cone:

Let h denote the height of the cylinder.

Let H denote the height of the cone.

Since, it is given that, the height of the cone is twice the height of the cylinder, we have;

$H=2h$

Volume of the cylinder:

The formula to determine the volume of the cylinder is

$V=\pi r^2 h$

Since, volume of the cylinder is $30 \pi$ , we get;

$30 \pi = \pi r^2 h$ -------(1)

Volume of the cone:

The formula to determine the volume of the cone is

$V=\frac{1}{3} \pi r^2 H$

Substituting $H=2h$ , we get;

$V=\frac{1}{3} \pi r^2 (2h)$

$V=\frac{2}{3} \pi r^2 h$

Substituting equation (1), we get;

$V=\frac{2}{3} (30 \pi)$

$V=20 \pi$

Thus, the volume of the cone is 20π

Hence, Option C is the correct answer.

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3 years ago

Solve the following proportion for .

k0ka [10]

Answer:

19.4 =u

Step-by-step explanation:

17/7 = u/8

We can use cross products to solve

17*8 = 7u

Divide each side by 7

17*8/7 = 7u/7

19.42857143 = u

To the nearest tenth

19.4 =u

7 0

3 years ago

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Look at the pattern. What is the next image in the pattern?

sp2606 [1]

By following the pattern the next image in the pattern is (b) since the correct option is (b).

A recurring arrangement of numbers, forms, colors, and other elements constitutes a pattern in mathematics. The Pattern can be connected to any kind of occasion or thing. When a group of numbers is arranged in a particular way, the arrangement is referred to as a pattern.

From the pattern given: In pattern one, the first column contains 2 blocks and the second column contains 1 block. In pattern second, the first column contains 3 blocks, the second column contains 2 blocks and the third column contains 1 block. In pattern third, the first column contains 4 blocks, the second column contains 3 blocks, the third column contains 2 blocks and the fourth column contains 1 block.

∴ You can observe that block the ks are arranged in descending numbers.

Hence, option (b) is correct.

Learn more about patterns here: brainly.com/question/534678

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2 years ago

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proporti

exis [7]

Answer:

435,307

Step-by-step explanation:

Given that :

p = 0.18

Zcritical = 99%

Error (E) = 1.5% = 1.5/100 = 0.0015

Sample size (n) can be obtained using the relation :

n = (Zcrit / E)^2 * (p * q)

q = 1 - p ; q = 1 - 0.18 = 0.82

Zcrit at 99% equals 2.576

n = (2.576 / 0.0015)^2 * (0.18 * 0.82)

n = (1717.3333)^2 * (0.1476)

n = 2949233.66328889 * 0.1476

n = 435306.888701440164

n = 435,307 samples

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3 years ago

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Rasek [7]

Your answer will be D

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4 years ago

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