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Arte-miy333 [17]
3 years ago
15

What is the rule when multiplying by 10's?​

Mathematics
1 answer:
Ivahew [28]3 years ago
4 0

Answer:

To multiply by a power of 10, simply move the decimal to the right the same number of places as the exponent or as the number of zeros.

Step-by-step explanation:

Example: To divide by a power of 10, simply move the decimal to the left the same number of places as the exponent or as the number of zeros.

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The Russell family and the Gonzalez family each used their sprinklers last summer. The water output rate for the Russell family'
Alexus [3.1K]

Answer:

Russell family's sprinkler: 40 hours

Gonzales family's sprinkler: 20 hours

Step-by-step explanation:

Let's call the amount of time the Russell family's sprinkler was on by X, and the Gonzales family's sprinkler by Y.

We can then formulate the equations:

X + Y = 60

X*35 + Y*40 = 2200

We can solve this system multiplying the first equation by 35, and then subtracting the result from the second equation:

35*X + 35*Y = 2100

5*Y = 100

Y = 20

from the first equation:

X + 20 = 60

X = 40

Russell family's sprinkler: 40 hours

Gonzales family's sprinkler: 20 hours

8 0
3 years ago
Which relationship describes angles 1 and 2?
malfutka [58]

Answer:

vertical angles

Step-by-step explanation:

When two lines intersect at a single point, they form 4 angles. Two angles that are not adjacent are vertical angles. With an intersection of two lines art a single point, there are two pairs of vertical angles. Angles 1 and 2 are vertical angles.

5 0
3 years ago
Read 2 more answers
5x (x - 4) = 0<br> Solve it in standard form
murzikaleks [220]

Answer:

x=0 or x=4

Step-by-step explanation:

5x(x−4)=0

4 0
3 years ago
May someone help me with this :)
Bezzdna [24]

Answer:

6 roll for 8.89

Step-by-step explanation:

4roll for 6.79 you pay 1.60 per roll and 6 roll for 8.89 you pay roughly 1.40 per roll

8 0
3 years ago
Do I need to flip my sign? 3x = -12​
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Answer:

no

Step-by-step explanation:

3x=-12

/3     /3

x=-4

:)

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