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3 years ago

Which expression is equivalent to (7x-5)-(3x-2)

Mathematics

2 answers:

gtnhenbr [62]3 years ago

6 0

4x-3 is the answer because you subtract like terms. 7x-3x=4x and -5-(-2)=-3

steposvetlana [31]3 years ago

6 0

21x^2 - (-14)x - 15x^2 + 10
6x^2 + 14x + 10 is an equivalent expression

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A rectangular swimming pool has a base of 200 square feet. The pool has a depth of 5 feet.

xz_007 [3.2K]

Answer:

1,000 ft³

Step-by-step explanation:

The volume is given by ...

V = Bh

where B is the area of the base, and h is the height. For the given dimensions, the volume is ...

V = (200 ft²)(5 ft) = 1000 ft³

3 0

3 years ago

Suzie is generating an expression equivalent to 3x-4+5(6x-8). Her work is shown below.

gizmo_the_mogwai [7]

1. B. Step 2 has an error. Instead of adding 3x and 30x, Suzie has subtracted 3x from 30x. And also, she has not added -4 and -40. The correct step will be 33x - 44.
2. A. 11(3x - 4).The next step will be 11(3x - 4).

Answers:

B. Step 2
A. 11(3x - 4)

Hope you could understand.

If you have any query, feel free to ask.

7 0

2 years ago

Emma earns $12 an hour babysitting. She wants to save at least $180. Write and solve and inequality to find the minimum number o

zaharov [31]

Answer:

15 hours

Step-by-step explanation:

180 ÷ 12 = 15

^-^

Can I have brainlest please?

6 0

3 years ago

An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the s

maks197457 [2]

Answer:

$W_s \approx5.3$

Step-by-step explanation:

From the question we are told that

Height $H=3.5ft$

Weight $W= 6ft$

Depth $D=0.95ft$

Generally the equation for ellipses is given as

$\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

Where

$b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\$

$\frac{x^2}{3^2} +\frac{y^2}{1.75^2} =1$

Generally to find y in the equation $\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

$y=-b+d$

$y=-1.75+0.95$

$y=-0.8$

Therefore

$\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1$

$\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}$

$\frac{x^2}{3^2} =1-0.2089795918$

$X^2 =3^2(1-0.2089795918)$

$X^2 =7.119183674$

$X =\sqrt{7.119183674}$

$X =2.66817984$

Therefore the width of the given stream is

$W_s=2.66817984*2$

$W_s=5.33635968$

$W_s \approx5.3$

3 0

3 years ago

Find the OPPOSITE of each integer. -3

vivado [14]

Answer:

Step-by-step explanation:

7 0

3 years ago