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mrs_skeptik [129]
3 years ago
11

Which equation should be used to solve 81 + × =108

Mathematics
2 answers:
blondinia [14]3 years ago
7 0

Answer:

27

Step-by-step explanation

you should use addition it would equal 108 because 81+27=108. Hope that helped :D

Airida [17]3 years ago
3 0
Subtract 81 then divide by that answer.
81+x=108
-81 -81
—————
X=27

The answer’s 27
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A mystery element has 18 protons. Which one of the following statements is true about the element?
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My guess would be B

Step-by-step explanation:

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Five snails are having a race. The snail's speeds are given in the table. Which two snails are going the same rate of speed?
kobusy [5.1K]

Answer:

2 1/5 for alice

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3 years ago
A triangular pane of glass has a height of 30 inches and an area of 270 square inches. what is the length of the base pane
Tems11 [23]
The equation for the area of a triangle is A= b*h /2. So, plug in your known variables, and you get 270in^2= b*30 /2. First you multiply by 2 to cancel out the division for 2, which gets you 540= b* 30. To get "b" by itself, divide both sides by 30, giving you <u>18=b</u>.

To check this, plug in your new known variable, as 270= 18* 30 /2. This will equal as 270=270, confirming 18in as the correct measurement.
3 0
3 years ago
How to solve (2.31*10^-6)+(5.87*10^-4)
S_A_V [24]

We want to calculate the following

2.31\cdot10^{-6}+5.87\cdot10^{-4}

Using the properties of exponents, we have that

10^{-6}=10^{-4}\cdot10^{-2}

So we have

2.31\cdot10^{-6}+5.87\cdot10^{-4}=2.31\cdot10^{-2}\cdot10^{-4}+5.87\cdot10^{-4}

So, if factor 10^-4 on the right side, we have

10^{-4}(2.31\cdot10^{-2}+5.87)

Note that

2.31\cdot10^{-2}=0.0231

Then,

5.87+2.31\cdot10^{-2}=5.87+0.0231=5.8931^{}

So we have that

2.31\cdot10^{-6}+5.87\cdot10^{-4}=5.8931\cdot10^{-4}

5 0
1 year ago
Which number produces a rational number when added to 0.25
Tatiana [17]

0.65 is the correct one if not up there try 0.45 other possible one

Step-by-step explanation:

A rational number is defined as any number which can be expressed in fractional p/q of two integers, where 'p' is the numerator and 'q' is the denominator. 'q' can never be zero. A rational number can also be expressed as a terminating decimal. So, when 0.25 is added in 0.45 it becomes 0.65 which is rational.

8 0
3 years ago
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