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ratelena [41]
3 years ago
7

How was the question 7+7+7 = 21 and 3×7 = 21 related ?

Mathematics
2 answers:
kifflom [539]3 years ago
5 0
7+7+7=21 is the same as saying 7 times 3+
=21
jarptica [38.1K]3 years ago
5 0
They both mean the same thing. multiplying 3 by 7 is the same as adding 7 three times.
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If f(x) = −2[x]+ 8, what is f(−1.8)?<br><br><br> 4<br><br> 6<br><br> 10<br><br> 12
Genrish500 [490]

Functions whose graphs resemble sets of stairsteps are known as step functions. The most famous of the step functions is the greatest integer function, which is denoted by:


f(x)=[x]


which graph is shown in the Figure below. As you can see from the graph:


if \ x=-1.8 \ then \ f(-1.8)=[-1.8]=-2


Therefore:


f(-1.8)=-2[-1.8]+8=-2(-2)+8=\boxed{12}


So the right answer is 12

5 0
3 years ago
Read 2 more answers
Maria bought a blouse on sale for 30% off. The sale price was $28.76. What was the original price? Write an equation to model th
Snowcat [4.5K]

Answer:

The equation is <u>sale price</u>=p and the original price is $41.09.

                              .70

Step-by-step explanation:

sale price= (1-.30)p      

<u>sale price=.70</u>p

.70              .70

<u>sale price</u>=p                  

.70

<u>28.76</u>=p

.70

$41.09=p

7 0
4 years ago
11. Change the fraction 8/50 to a decimal.
Vitek1552 [10]
D. 0.16 is the answer
5 0
3 years ago
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The volume of a cube is 27 cubic inches. What is the length of one edge of the cube?
hjlf
The volume for any cube is length x width x height,
so in this case because all side of cube is the same, let it be y.
y x y x y = 27
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3 0
3 years ago
Help answer the question in the picture please.
Contact [7]

Answer:

Congruent and isometries.

Step-by-step explanation:

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(which is true because translations and rotations don't change size or shape)

And isometries because it is one way of mapping points to  a different location.

5 0
3 years ago
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