3 years ago

Expressions are equivalent???

Mathematics

1 answer:

Semenov [28]3 years ago

4 0

Answer:

only the first option is equivalent

Step-by-step explanation:

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-3x + 1 = 2 (4x - 5)

IgorLugansk [536]

-3x + 1 = 2 (4x - 5) =

-3x = 1 ( 4x - 5) =

-3x + 5 = 4x =

5 = 7x

6 0

3 years ago

on the first four days of the week, Ella took 30 min 28 min 34 min and 31 min to get to school if the average for the week is 31

Mila [183]

It took 32 minutes for Ella to go to school on Friday.

Step-by-step explanation:

Time for first four days in minutes,

30,28,34,31

Let x be the time on Friday

Average = 31 min

As we know

$Average = \frac{Sum\ of\ term}{No.\ of\ terms}\\Average=\frac{30+28+34+31+x}{5}\\31=\frac{123+x}{5}$

Multiplying both sides by 5;

$5*31=\frac{123+x}{5}*5\\155=123+x\\x+123=155\\x=155-123\\x=32$

It took 32 minutes for Ella to go to school on Friday.

Keywords: Average, Addition

Learn more about addition at:

#LearnwithBrainly

5 0

4 years ago

Plz help! Will mark brainliest

aev [14]

X+2 over x-3. Hope this helps

4 0

3 years ago

Please help me with the questions please ASAP ASAP please please ASAP please please help please I’m begging please please

Anna007 [38]

Answer:

3/2

Step-by-step explanation:

The ratio of perimeters of similar polygons is the same as the ratio of the lengths of corresponding sides.

WX/AB = 12/8 = 3/2

6 0

3 years ago

A full-grown giraffe is about 6 times heavier than a full-grown lion. A full-grown cheetah is about one-quarter as heavy as a fu

Angelina_Jolie [31]

Answer:

sorry i dont know

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers