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3 years ago

5.2 more than the product of seven and a number

Mathematics

2 answers:

vlabodo [156]3 years ago

7 0

It would be 12.2 because 7+5.2 is 12.2

Lemur [1.5K]3 years ago

3 0

The phrase “and a number” states that there will be a variable in this equation. Let’s make the variable letter a.
Your answer to this statement would be:
7.2a + 5.2
You’re adding 5.2 to the product of 7.2 and a number (a). Product = multiplying a number with a number
Hope I helped!

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What two numbers add up to -20 and multiply to -1125

Oliga [24]

I don't have my calculator handy just now. But just looking at that problem, why don't you try +20 and -45 and see if they do the job.

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2 years ago

YOU can answer with A. B. C. or D.

klemol [59]

Answer: 0.0066248

Step-by-step explanation:

7.28⋅10−2)⋅(9.1⋅10−2)

7.28⋅9.1⋅10−4

66.248⋅10-4

0.0066248

is this wht the question say? If so I hope I help

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3 years ago

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I need to know what 70% of 120 = ?

malfutka [58]

Question: <span>70% of 120 = ?

Work:

To find what </span><span>70% of 120 is. Do .70 times 120.

.70 x 120 = 84

Final Answer:

84
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3 years ago

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On the blueprint of a house, 42 millimeters represents 8 meters. The actual length of the living room is 5 meters. What is its l

RideAnS [48]

Answer:

26.25 mm

Step-by-step explanation:

On the blueprint of a house, 42 millimeters represents 8 meters. Thus,

42 mm - 8 m,

x mm - 5 m,

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3 years ago

If remove the zero from 0.76 would it change the value of the number

wariber [46]

Question 1:

<h3>Answer: The number does <u>not</u> change</h3>

Removing the zero from 0.76 leads to .76 which is the same as before. Both lead to $7.6 \times 10^{-1}$ in scientific notation.

Personally I prefer the zero up front to make the decimal point stand out easier. Of course it's just a preference, so its up to you to decide which you prefer.

===========================================

Question 2:

<h3>Answer: Yes the number changes</h3>

Taking the zero out of 10.25 leads to 1.25 which is definitely a different number (and smaller). Therefore, this zero is a significant digit compared to before.

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2 years ago