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2 years ago

A school bought 32 new desks. Each desk cost $24. Estimate how much the school spent on the new desks.

Mathematics

2 answers:

Pavlova-9 [17]2 years ago

8 0

Estimate:

32 x 24

30 x 25

$750

Radda [10]2 years ago

7 0

Answer:

768

first, you multiply 4 and 2 then do 4 x 3 then take both of those down second, you multiply 2 and the do 2 x 3 bring those down now you have your answer.

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Special right triangles 45-45-90 & 30-60-90 formula!! finding missing side lengths

nordsb [41]

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2 years ago

The base of a circular fence with radius 10 m is given by x = 10cos(t), y = 10sin(t). the height of the fence at position (x, y)

Karo-lina-s [1.5K]

The average height of the fence is 2 m; its length is 20π m. So, its 2-sided area is
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6 0

3 years ago

The question is below (This an order of operation question)

olga_2 [115]

Step-by-step explanation:

i am 90% sure this is correct

7 0

3 years ago

Read 2 more answers

Solving inequalities for word problems:

zepelin [54]

For this case we have to:

x: Let the variable representing the unknown number

We algebraically rewrite the given expression:

Twice a number plus 10, is represented as: $2x + 10$

Three times that number less 4. is represented as:

$3x-4$

Thus, the complete expression is:

$2x + 10> 3x-4$

Subtracting 3x from both sides of the inequality:

$2x-3x + 10> -4\\-x + 10> -4$

Subtracting 10 from both sides of the inequality:

$-x> -4-10$

Equal signs are added and the same sign is placed:

$-x> -14$

We multiply by -1 on both sides, taking into account that the sense of inequality changes:

$x$

The solution is given by all values of "x" less than 14.

Answer:

$x$

5 0

2 years ago

The radius of a cylinder is 7 c m and its height is 10 c m. Find curved surface area and volume.

erma4kov [3.2K]

Answer:

CSA of the cylinder = 440 sq. cm

Volume of the cylinder = 1540 cu. cm

$\\$

Step-by-step explanation:

Given:

Radius of the cylinder = 7 cm
Height of the cylinder = 10 cm

$\\$

To Find:

Curved surface area
Volume

$\\$

Solution:

$\\$

Using formula:

$\dashrightarrow \: \: { \underline{ \boxed{ \pmb{ \sf{ \purple{CSA \: of \: cylinder = 2\pi rh}}}}}} \: \star \\ \\$

Substituting the required values: 

$\\$

$\dashrightarrow \: \: \sf CSA {(cylinder)} = 2 \times \dfrac{22}{7} \times 7 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 2 \times 22 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 44 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf CSA {(cylinder)} = 440 \: {cm}^{2} \\ \\ \\$

Now,

$\dashrightarrow \: \: { \underline{ \boxed{ \pmb{ \sf{ \purple{Volume {(cylinder)}= \pi {r}^{2} h}}}}}} \: \star \\ \\ \\$

Substituting the required values, 

$\\$

$\dashrightarrow \: \: \sf Volume {(cylinder)}= \dfrac{22}{7} \times {(7)}^{2} \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= \frac{22}{7} \times 49 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= 22 \times 7 \times 10 \\ \\ \\ \dashrightarrow \: \: \sf Volume {(cylinder)}= 1540 {cm}^{3} \\ \\ \\$

Hence,

CSA of the cylinder = 440 sq. cm

Volume of the cylinder = 1540 cu. cm

8 0

2 years ago

Read 2 more answers