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Luda [366]
3 years ago
14

Question 9 of 10

Mathematics
1 answer:
AlladinOne [14]3 years ago
8 0

Answer:$14,046 apexxx

Step-by-step explanation:

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Donte used mental math to find the exact sum of 386 and 14. Which strategy could Donte have used?
Nostrana [21]

Answer:

380 + 6 + 14

Step-by-step explanation:

The sum of 386 and 14 is 386 + 14 = 400.

To find which stategy he used, we find the results of each sum, and it has to be 400.

380 + 6 + 14

380 + 6 + 14 = 386 + 14 = 400

So this is the strategy that he could have used.

380 + 14 + 14

380 + 14 + 14 = 394 + 14 = 408

Result different of 400, which means that this was not the strategy

386 + 10 + 4 + 14

386 + 10 + 4 + 14 = 386 + 14 + 14 = 408

Result different of 400, which means that this was not the strategy

386 + 14 + 80 + 6

386 + 14 + 80 + 6 = 400 + 86 = 486

Result different of 400, which means that this was not the strategy

3 0
3 years ago
Read 2 more answers
Write an explicit formula fo the sequence 7,2,-3,-8,-13.... Then find the 14th term
MrRa [10]

Answer:

The 14th term is -58

Step-by-step explanation:

The formula for an arithmetic sequence is

an = a1+d(n-1)

where a1 is the first term

d is the common difference and

n is the term number

a1 = 7

d = 2-7 = -5

Check -3-2 = -5   so d = -5

an = 7 -5(n-1)

We want the 14th term

a14 = 7 -5(14-1)

a14 = 7 -5(13)

a14 = 7 -65

a14 = -58

6 0
3 years ago
Which expression is equivalent to 4(3−6x)+x ?
slavikrds [6]
The answer is B: -23x+12
4 0
3 years ago
Read 2 more answers
Geoffrey is evaluating the expression (-3^3(2^6)/(-3^5(2^2) what are the values of a,b,c and d
tiny-mole [99]
-9×36÷-15×4
-324÷60
-5.4
(not sure if this is what you are looking for)
5 0
3 years ago
Is ABC DEF? If so, identify the similarity postulate or theorem that applies.
VladimirAG [237]

We are given traingle ABC and Triangle DEF.

Angle <A is congruent to Angle <D

Angle <B is congruent to Angle <E

Angle <C is congruent to Angle <F.

If two pairs of corresponding angles are congruent to each other, then the triangles are similar by Angle-Angle Similarity.

<em>By Angle-Angle similarity postulate triangle ABC and triangle DEF are similar.</em>

Therefore, option C is correct option.

<h3>C. Similar - AA.</h3>
7 0
3 years ago
Read 2 more answers
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