All categories

3 years ago

Help me please!!!!!!!!

Mathematics

1 answer:

antoniya [11.8K]3 years ago

4 0

Answer: 13 = 5x - 2

Step-by-step explanation:

2x + 3 = 8x - 15

2x + 15 = 8x

----------------------

2x + 18 = 8x

-2x + 18 = -2x

----------------------

18 = 6x ---> divide 18 by 6

----------------------

x = 3

13 = 5x - 2

+2 = 5x + 2

----------------

15 = 5x ---> divide 15 by 5

----------------

x = 3

You might be interested in

Mike saves $42 a week for 7 weeks. During his 88-day vacation, he plans to spend $8.25 each day for snacks. Which expression sho

Dovator [93]

42 - (49 x .825)

42 = what he's beginning with
49 = number of days
8.25 = amount of money spent each day

Following PEMDAS, (49 x .825) = 40.43 dollars

42.00 - 40.43 = $1.57

3 0

4 years ago

Kiran starts at 9:00 am by bicycle to reach office. She cycles at the speed of 8 km/hour and reaches the office at 9:15 am. By h

Ivenika [448]

Answer:

v = 12 km/h

Step-by-step explanation:

To find how much she should increase the speed first we need to find the distance traveled:

$d = v*t$

Where:

d: is the distance traveled =?

v: is the velocity = 8 km/h

t: is the time = 15 min (9:00 to 9:15)

$d = v*t = 8 km/h*15 min*\frac{1 h}{60 min} = 2 km$

Now, we can find the speed:

$v_{f} = \frac{d}{t} = \frac{2 km}{10 min*\frac{1 h}{60 min}} = 12 km/h$

Therefore, she should increase the speed to 12 km/h to reach the office at 9:10 am.

I hope it helps you!

6 0

3 years ago

What's the nth term of the following question:

Leona [35]

Answer:

-21

Step-by-step explanation:

-13 +(-2) = -15

-15+(-2) = -17

-17+(-2 )=- 19

-19+ (-2)= -21

5 0

3 years ago

Frank took a spelling test and got an 85%. If Frank got 34 questions correct, how many questions were on the test? Please be sur

Blizzard [7]

Answer:

40 questions

Step-by-step explanation:

34 / 85% = 40

40 * 85% = 34

5 0

3 years ago

The length of an alligator in a zoo is 14 5/6 feet.The everglades national parks list the longest alligator ever reocord in flor

astraxan [27]

Answer:

The difference in the lengths of the two alligators = 3

Step-by-step explanation:

First, let us make the lengths improper fractions, then we will find the difference from there.

Alligator 1:

Length = $14\frac{5}{12} = \frac{173}{12}$

To convert to improper fraction, multiply the denominator by the whole number, and then add the denominator [(12 × 14) + 5]

Alligator 2:

Length = $17\frac{5}{12} = \frac{209}{12}$

Now Let us find the difference between the lengths:

$\frac{209}{12} - \frac{173}{12} = \frac{36}{12} =3$

Therefore the difference in the lengths of the two alligators = 3

3 0

4 years ago