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Yanka [14]
3 years ago
13

Write a number or expression in each blank space to create true equations.

Mathematics
1 answer:
Rina8888 [55]3 years ago
4 0

Answer:

7(3+5)=7(3)+7(5)\\15-10=5(3-2)

Step-by-step explanation:

Both expressions are examples of the <em>distributive property</em>, which basically says "if I have <em>this </em>many groups of some size and <em>that</em> many groups of the same size, I've got <em>this </em>+ <em>that</em> groups of that size altogether."

To give an example, if I've got <em>3 groups of 5 </em>and <em>2 groups of 5</em>, I've got 3 + 2 = <em>5 groups of 5 </em>in total. I've attached a visual from Math with Bad Drawings to illustrate this idea.

Mathematically, we'd capture that last example with the equation

5(3)+5(2)=5(3+2). We can also read that in reverse: 3 + 2 groups of 5 is the same as adding together 3 groups of 5 and 2 groups of 5; both directions get us 8 groups of 5. We can use this fact to rewrite the first expression like this: 7(3+5)=7(3)+7(5).

This idea extends to subtraction too: If we have 3 groups of 4 and we take away 1 group of 4, we'd expect to be left with 3 - 1 = 2 groups of 4, or in symbols: 4(3)-4(1)=4(3-1)=4(2). When we start with two numbers like 15 and 10, our first question should be if we can split them up into groups of the same size. Obviously, you could make 15 groups of 1 and 10 groups of 1, but 15 is also the same as <em>3 groups of 5</em> and 10 is the same as <em>2 groups of 5</em>. Using the distributive property, we could write this as 15-10=3(5)-2(5)=5(3-2), so we can say that 15-10=5(3-2).

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Answer:

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Step-by-step explanation:

see the attached figure to better understand the problem

we know that

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substitute the given values

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3 years ago
A video game has five stages. If Will beat 4/5 of the stages, what percent of the game has he finished
fiasKO [112]

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75%

Step-by-step explanation:

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2 years ago
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shutvik [7]

Answer:

72 chips

Step-by-step explanation:

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7 0
3 years ago
Right triangle LMN has vertices L(7, –3), M(7, –8), and
prohojiy [21]
We are given the vertices of the triangle with their respective coordinates. For the vertex L, the translated coordinates is also given. So, from the original coordinates of L and the new coordinates, we can get the rule used during translation:(7, -3) -> (7 + a, -3 + b) = (-1, 8)7 + a = -1a = -8
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6 0
3 years ago
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jacob and his three friends went out to eat. they each ordered an individual pizza and a drink for $6.19. they also ordered brea
Yakvenalex [24]

Answer:

Each of them spent $9.35 on meal.

Step-by-step explanation:

Jacob and his three friends ordered an individual pizza and a drink for $6.19.

Total cost of pizza and drink = 6.19 × 4

= $24.76  

They also ordered bread sticks for $4.25

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So the total billed amount will be = 24.76 + 4.25 + 2.39 + 6

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Since there were four persons including Jacob.

Therefore, each person spend on meal = \frac{37.40}{4}

= $9.35

7 0
3 years ago
Read 2 more answers
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