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vovangra [49]
2 years ago
12

Which of the following is a valid use of the associative property of addition?

Mathematics
2 answers:
nekit [7.7K]2 years ago
8 0

\text{Associative property:}\\\\a+(b+c)=(a+b)+c\\\\\text{Find the equation that matches with the associative property formula}\\\\\text{When you add them, you should get the same answer no matter what}\\\text{position the numbers are in}\\\\(23+15)-5\\\\38-5=33\\\\23+15-5\\\\38-5=33\\\\\text{This means that A would be your answer}\\\\\boxed{A. (23 + 15) - 5 = 23+ (15 - 5)}

Natasha_Volkova [10]2 years ago
3 0

Answer:

A

Step-by-step explanation:

(25+15)-5=40-5=35

25+(15-5)=25+10=35

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Teresa is building a scale model of the JP Morgan chase Tower in Houston.In her scale model, 1.5 inches represents 61 meters. Si
Jet001 [13]

Answer:

Teresa should build 7.5 inches model.

Step-by-step explanation:

Consider the provided information.

Teresa is building a scale model of the JP Morgan chase Tower in Houston.

Her scale model, 1.5 inches represents 61 meters.

The actual building is 305 meters tall,

First find how many 61's are there in 305.

For this divide 305 by 61.

\frac{305}{61}= 5

Actual building is 5 times taller than 61. Thus the model should be 5 times taller than 1.5.

multiply 1.5 with 5 gives us:

1.5\times 5=7.5

Hence, Teresa should build 7.5 inches model.

7 0
2 years ago
If 2a+4b=5 and a is equal to three times b, what is 3a?
IrinaK [193]

Answer:

3a=4.5

Step-by-step explanation:

it says that "a is equal to 3 times b", which translates to a=3b

We can substitute a as 3b in 2a+4b=5

2(3b)+4b=5

multiply

6b+4b=5

add

10b=5

divide by 10

b=1/2

since it's given that a=3b, we can multiply 1/2 by 3

a=3/2

3a is 3 times a, so we can mutiply 3(3/2)=9/2=4.5

Hope this helps!

7 0
2 years ago
What is the area of this figure?
matrenka [14]
There is 2 figure here, a triangle and a parallelogram.
Area of parallelogram=base * height
                                   A=9 * 5
                                   A=45m²
Area of triangle= \frac{1}{2} (base * height)
                        A=\frac{1}{2} (9*8)
                        A=\frac{1}{2}72
                        A=36m²
36+45=81m²
The area of this figure is 81m²
3 0
3 years ago
How to solve the rational equation?<br><br> 1/3 + 1/2 = 1/x
tatyana61 [14]

Answer:

 x = ⁶/₅  

Step-by-step explanation:

\begin{array}{rcll}\dfrac{1}{3} + \dfrac{1}{2} & = &\dfrac{1}{x} & \\\\2x + 3x & = & 6 & \text{Multiplied all terms by LCM of denominators (6x)}\\5x & = & 6 & \text{Simplified left-hand side}\\x & = & \mathbf{\dfrac{6}{5}} & \text{Divided each side by 5}\\\end{array}

8 0
3 years ago
0.07 divided by 6.65
Kipish [7]

Answer:

0.01052

Step-by-step explanation:

It would take me a million years to show you how to solve it but its long division

8 0
2 years ago
Read 2 more answers
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