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3 years ago

Explain how you would round 39an 88

Mathematics

2 answers:

dedylja [7]3 years ago

7 0

Depends what your talking about but the easy way is 40 and 90

lozanna [386]3 years ago

6 0

39 rounded to the tens place would be 40.
88 rounded to the tens place would be 90.

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Please write an addition statement that is equivalent to 49 ÷ -7

Zanzabum

Answer:

84 ÷ -12 = -7

21 ÷ -3 = -7

Step-by-step explanation:

49 ÷ -7 = -7

Means that __ ÷ __ must equal -7

There are many options, here are a few:

84 ÷ -12 = -7

or -84 ÷ 12 = -7

21 ÷ -3 = -7 etc

5 0

3 years ago

Understand multiplying

taurus [48]

Answer:

Step 1 : 1000 * 2 * 9

Step 2 : 1000 * 18

Step 3 : 18000

Step-by-step explanation:

Step 3

2000 * 9 = y ⇒ 18000

y = 18000

Step 1

Solving for this, we have:

Let a be the unknown variable

a * 2 * 9 = 18000

18a = 18000

a = 1000

Therefore, when we multiply 1000 by 2 & 9, we have 18000

Step 2

Solving for this, we have:

Let a be the unknown variable

a * 18 = 18000

18a = 18000

a = 1000

Therefore, when we multiply 1000 by 18, we have 18000

We therefore see that the value of the unknown variables (a, y) is shown above & the product of all the steps (step 1 - 3) is 18000

3 0

4 years ago

HELP!!!!!!!! This is urgent!!! Will mark brainiest! 73-75! *ignore all work/questions/handwriting above****

Alexxx [7]

73 - 75 = 2 LOL hope it helps you

5 0

4 years ago

A train goes from New Orleans to Boston at 40 mph. On the way back it returns with a speed of 80 mph. If it takes it an hour les

Serggg [28]

Let's say the distance is "x".

time = distance / rate

time1 = x / 40

time2 = x/80

A) time1 shoud be twice time2 or (time1 / time2) =2

B) time1 -1 = time2

Substituting equation B) into A)

((time1 / (time1 -1) = 2

time1 = 2* time1 -2

time1 = 2 hours time2 = 1 hour

Distance = 80 miles

1st trip time1 = 80/40 = 2 hours

return trip time2 = 80/80 = 1 hour

total trip = 160 miles in 3 hours

average speed = 53.333333 miles per hour

3 0

3 years ago

Which relation is a function?

Serjik [45]

Answer:

the blue one

Step-by-step explanation:

if you run a ruler across the grid vertically there is no clashing of points

3 0

3 years ago