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DIA [1.3K]
3 years ago
12

Explain how you know whether to add or subtract when you use the distributive property to multiply

Mathematics
1 answer:
cricket20 [7]3 years ago
4 0
Think about it this way:

26 * 19 = ?
(26 + 10) x (26 + 9)
Hope this helps

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m_a_m_a [10]
It is forty-eight it is easy

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3 years ago
Solve the system of linear equations using the elimination method: 2x + 2y = 16 -2x +3y = 14
horrorfan [7]

Answer:

Step-by-step explanation:

soulution:

        given,              2x +2x = 16 <em>-</em> <em>2x</em> + 3y = 14

                                 2x <em>+ 2x</em> = <em>-2y </em>+3y = 14 -16

                                       4x = y = -2

                                         y = 4x = -2

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                                         x = y = <u><em>-2 ans</em></u>

4 0
3 years ago
What is 10and 1 half divided by 7 eights​
Lunna [17]

Answer:

12

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The cost of K-12 education per student was $2200 in 1978 and increased to $10,300 in 2008. (Source: Department of Education). (a
kobusy [5.1K]

Answer: C=270x+2200

Step-by-step explanation:

Given

Cost per student in the year 1978 is $2200

The cost increases to $10,300 in 2008

Suppose C=mx+a is the linear equation defining the cost per student after x years

Substitute the value for 1978

\Rightarrow 2200=m(0)+c\\\Rightarrow c=2200

After 30 years it becomes

\Rightarrow 10,300=m(30)+2200\\\Rightarrow 30m=8100\\\Rightarrow m=270

Thus, the linear equation becomes

\Rightarrow C=270x+2200

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2 years ago
A 6th grade teacher can grade 25 homework assignments in 20 minutes. Is this working at a faster rate or slower rate than gradin
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25 ÷ 20 = 1.25
1.25 hw assignment per minute

36 ÷ 30 = 1.2
1.2 hw assignments per minute
3 0
3 years ago
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