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2 years ago

Can someone help me with this question and show me the steps please -13+x=-25

Mathematics

2 answers:

Sergeeva-Olga [200]2 years ago

8 0

Answer:

x = -12

Step-by-step explanation:

-13+x=-25

Add 13 to each side

-13+13+x=-25+13

x = -12

Dmitrij [34]2 years ago

3 0

Answer:

x= -12

Step-by-step explanation:

-13+x=-25

+13 +13

x= -12

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Twice a number is equal to 35 more than seven times the number. Find the number

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number - n

Twice a number - 2n

Seven times the number - 7n

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7n-2n = -35

5n = -35

n = - 7

Check:

2(-7) = 7(-7) +35

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-14 = -14 True

The number is (- 7).

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You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sampl

pickupchik [31]

Answer: Sample size would be 296.

Step-by-step explanation:

Since we have given that

Standard deviation = 4.8 hours

Margin of error = 0.65 hours

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