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Ainat [17]
3 years ago
12

Chris can type 490 words in 7 min how many works can he type PER min You get 14 points

Mathematics
1 answer:
amm18123 years ago
5 0
<h2>Answer: 70 words per min</h2><h2 /><h2>Step-by-step explanation: We just divided 490 by 7 to get how many words he can type for 1 min!</h2>

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denpristay [2]
The probability of rolling factors of 3 would be 1/3
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2 years ago
75% increase followed by 50% decrease is it greater than to original
IceJOKER [234]

Answer:

  • Set original amount = x

<u>After a 75% increase, it would become</u>

x + 75%x = x + 0.75x = x(1 + 0.75) = 1.75x

<u>After a 50% decrease, it would become</u>

1.75x - 50%(1.75x) = 1.75x - 0.5(1.75x) = 1.75x - 0.875x = 0.875x = \frac{7}{8} x

Because \frac{7}{8} x is less than x, the new amount would be less than the original.

7 0
2 years ago
Simplify the expression (8n^4-6n+8n^2)+(6n^4-3n+7)
Marysya12 [62]

Answer:

=14n⁴+8n²-9n+7

Step-by-step explanation:

(8n⁴-6n+8n²)+(6n⁴-3n+7)

=8n⁴-6n+8n²+6n⁴-3n+7

=8n⁴+6n⁴+8n²-6n-3n+7

=14n⁴+8n²-9n+7

8 0
2 years ago
What is the average rate of change between (3,2) and (1,9)
hjlf

Answer:

-0.25

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7 0
2 years ago
The triangles below are similar because of the:
siniylev [52]

Answer:

AA similarity postulate

Explanation:

For triangle XZY, the angles are 90°, 40°, 50°.

For triangle AXB, the angles are 90°, 40°, 50°.

Which states that all the angles are of equal measure in the triangles.

This is stated by AA similarity theorem meaning when two angles are equal in the triangle. Then the triangles are congruent to each other.

7 0
2 years ago
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