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3 years ago

Which rate is not equivalent to the others?

Mathematics

2 answers:

zmey [24]3 years ago

7 0

Answer:

everything is in 3/4 form so it'd be 1 for .75

15 is 3/4s of 20

27 is 3/4s of 36

and 3 is 3/4s of 4

zimovet [89]3 years ago

7 0

Answer:

D, 1 for $.75

Step-by-step explanation:

You have to use percentages to find the answer.

A: 27 * 100 divided by 36= 75

B: 3 * 100 divided by 4= 75

C: 15 * 100 divided by 20= 75

D: 1 * 100 divided by .75= 133.33

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- 4j - 1 - 4j+6<br><br> Write that expression in the simplest form

Anika [276]

Answer:

-8j+5

Step-by-step explanation:

the answer is -8j+5

4 0

3 years ago

The four sides of a garden measure 8 1/3 feet, 17 1/4 feet, 17 1/2 feet, and 11 3/4 feet. Find the length (in ft) of the fence n

dimaraw [331]

Given :

The four sides of a garden measure 8 1/3 feet, 17 1/4 feet, 17 1/2 feet, and

11 3/4 feet.

To Find :

The length (in ft) of the fence needed to enclose the garden.

Solution :

First simplifying the given mixed numbers :

8 1/3 = 25/3 feet

17 1/4 = 69/4 feet

17 1/2 = 35/2 feet

11 3/4 = 47/4 feet

Now, length of fence needed to enclose the garden is :

$L = \dfrac{25}{3}+ \dfrac{69}{4}+ \dfrac{35}{2}+ \dfrac{47}{4}\\\\L = \dfrac{(25\times 4)+ ( 69\times 3) + ( 35\times 6) + (47 \times 3 )}{12}\\\\L = \dfrac{658}{12}\ feet$

Hence, this is the required solution.

4 0

3 years ago

Please help, i can't figure this out and im ready to pull my hair out!!!

Nat2105 [25]

Answer:

I'm sorry I don't know the equation, but she walks 3 mph.

Step-by-step explanation:

We know that the answer is asking for speed, which needs both distance and time, so we also need both. Which is where the 9 mph is used. 9 mph means its a difference. b means biking mph, w means walking mph, sooo ----->>> b=w+9, and the difference in the 1st equation is 36, which means the first equation is 4 times larger than the b=w+9, so she walked 48 miles, as well as walked 12 miles in 4 hours. Divide then distances by 4, and you get 12 miles and 3 miles in one hour. Or 12 mph & 3 mph, which fits into 12=3+9. So she walks 3 miles per hour.

5 0

3 years ago

Which expressions are equivalent to -56z+28−56z+28minus, 56, z, plus, 28?

bearhunter [10]

Answer:

B) $(-1.4z+0.7)\times 40$

D) $(8z-4)(-7)$

Step-by-step explanation:

Given expression:

$-56z+28$

To find the equivalent expression.

We will evaluate each expression in the given choices to check the equivalence.

A) $\frac{1}{2}(-28x+14)$

Using distribution.

⇒ $\frac{-28z}{2}+\frac{14}{2}$

⇒ $-14z+7$

B) $(-1.4z+0.7)\times 40$

Using distribution.

⇒ $(-1.4z\times 40)+(0.7\times 40)$

⇒ $-56z+28$

C) $(14-7z).(-4)$

Using distribution.

⇒ $(14.(-4))+(-7z.(-4))$

⇒ $-56+28z$

D) $(8z-4)(-7)$

Using distribution.

⇒ $(8z(-7))+(-4(-7))$

⇒ $-56z+28$

E) $-2(-28z-14)$

Using distribution.

⇒ $(-2(-28z))+(-2(-14))$

⇒ $56z+28$

From the choices evaluated, we find that the expressions in choices B and D are equivalent

5 0

3 years ago

Read 2 more answers

Sarah and Nancy each drive 600 miles. Sarah's average speed is represented by x miles per hour. What does the denominator of the

arlik [135]

The denominator of the rational expression 600/(x-4) is x-4.

We know x represents Sarah’s average speed. So x-4 will also represents the average speed. And x-4 represents 4 mph less than the average speed of Sarah, x.

Therefore, option a) is correct.

6 0

3 years ago

Read 2 more answers