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3 years ago

Someone give me the answer to this problem please ☺️☺️

Mathematics

1 answer:

Softa [21]3 years ago

4 0

SA = 2 * pi * r^2 + 2 * pi * r * h
r = 1
h = 4
pi = 3.14
now sub
SA = 2(3.14)(1^2) + 2(3.14)(1)(4)
SA = 6.28(1) + 6.28(4)
SA = 6.28 + 25.12
SA = 31.4 sq ft

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Using the terms below, group like terms

Ahat [919]

Answer:

= 3a + 7b - 8c

Step-by-step explanation:

In addition of algebraic expressions while adding algebraic expressions we collect the like terms and add them. The sum of several like terms is the like term whose coefficient is the sum of the coefficients of these like terms.

Horizontal Method: In this method, all expressions are written in a horizontal line and then the terms are arranged to collect all the groups of like terms and then added.

(6a + 8b - 7c) + (2b + c - 4a) + (a - 3b - 2c)

= 6a + 8b - 7c + 2b + c - 4a + a - 3b - 2c

Arrange the like terms together, then add.

Thus, the required addition

= 6a - 4a + a + 8b + 2b - 3b - 7c + c - 2c

= 3a + 7b - 8c

Column Method: In this method each expression is written in a separate row such that there like terms are arranged one below the other in a column. Then the addition of terms is done column wise.

6a + 8b - 7c

- 4a + 2b + c

a - 3b - 2c

3a + 7b - 8c

= 3a + 7b - 8c

4 0

3 years ago

the distance that a spring will stretch varies directly as the force applied to the spring. A force of 12 pounds is needed to st

vodka [1.7K]

Answer:

Force required, F = 20 pounds

Step-by-step explanation:

We have given,

force needed to stretch a spring , F = 12 pounds

Stretched length, x = 9 inches

Since, spring force formula can be given as: F = kx

i.e 12 = k · 9

or k = $\frac{12}{9}$ = 4/3

Now we need to find force for the stretch length = 15 inches

i.e F = kx , here x =15inches , k = 4/3 and F= ?

or F = (4/3) · 15

or F = 20 pounds

Hence force required, F= 20 pounds

4 0

3 years ago

Read 2 more answers

Which expression is the simplest form of 2x^3 - x^2 + 3 (x^3 - 4x^2)

jolli1 [7]

The simplest form of the given expression is 5x^3-5x^2.

We have given that

$2x^3 - x^2 + 3 (x^3 - 4x^2)$

We have to determine the simplest form of the given expression.

<h3>What is the distributive property?</h3>

The distributive property of binary operations generalizes the distributive law, which asserts that equality is always true in algebra. elementary.

Use the distributive property we get,

$2x^3 - x^2 + 3 (x^3 - 4x^2)\\=2x^3 - x^2 +3x^3-12x^2\\$

Add like terms we get,

Therefore we get,

$=5x^3-5x^2$

Therefore the simplest form of the given expression is 5x^3-5x^2.

To learn more about the expression visit:

brainly.com/question/723406

#SPJ1

5 0

2 years ago

Ab is 10. 8 units long if ABC is dilated by a scale factor of k equals 1.3 what is the length of a'b'

Marizza181 [45]

ANSWER

The length of

$A'B'=14.04 \: units$

EXPLANATION

The object length given to us is,

$|AB|=10.8 \: units$

The scale factor of the dilation is,

$k = 1.3$

The image length can be calculated using the formula

$|A'B'| = k \times |AB|$

We substitute the given values into the formula to get,

$|A'B'| = 1.3\times 10.8$

We multiply out to obtain,

$|A'B'| = 14.04 \: units$

7 0

3 years ago

Can I have some help please which of the following is the quotient of the rational expressions shown below

elena-s [515]

Answer:

where is your question ?????????

8 0

3 years ago