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3 years ago

Which of the following number sentences is true?

Mathematics

2 answers:

Levart [38]3 years ago

8 0

D, a double negative is always a positive

Dimas [21]3 years ago

3 0

D because a negative - becomes a positive when multiplied or divided by another negative

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3x+4/7-5x-4/7=3/7<br> A- (2)<br> B (-2)<br> C (4/3)<br> D (-4/7)

oksano4ka [1.4K]

That one is realy hard

5 0

3 years ago

Help pls thank you so much

azamat

Answer:

$179.20

Step-by-step explanation:

use the formula retail price = original price + markup

Step One: Convert 28% to a decimal

--> 0.28

Step two: Plug all the numbers into the equation

--> $140 + $140 x 0.28 = $179.20

Give brainliest if this was helpful! Thanks! Have an amazing day!

5 0

2 years ago

11B. Long Beach Towing Company charges $40 plus $5 per mile to

gavmur [86]

Answer:

The charges will be the same after 10 miles.

Step-by-step explanation:

Long Beach Towing Company:

Charges $40 plus $5 per mile. So after x miles, the charge will be of:

$L(x) = 40 + 5x$

Five-Star Towing Company:

Chargers of $70 plus $2 per mile. So after x miles, the charge will be of:

$F(x) = 70 + 2x$

After how many miles the charges for the two companied will be the same?

This is x for which:

$L(x) = F(x)$

$40 + 5x = 70 + 2x$

$5x - 2x = 70 - 40$

$3x = 30$

$x = \frac{30}{3}$

$x = 10$

The charges will be the same after 10 miles.

5 0

2 years ago

A student completes about 8 problems every 3 minutes. At this rate, how long will it take the student to complete 20 problems?

storchak [24]

Answer:

Step-by-step explanation:

5 0

2 years ago

Jerome tries to find the value of the expression 3 - 6 + 5 by first applying the commutative property.He rewrites the expression

Afina-wow [57]

By moving the signs he actually changed the number itself. He changed -6 from a negative to a positive and 5 from a positive to a negative. Both equations give different answers.

Hopefully this helps :)

8 0

2 years ago