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MAVERICK [17]
2 years ago
15

Can anyone help me please

Mathematics
1 answer:
Vera_Pavlovna [14]2 years ago
5 0

Answer:

1. 5(3+9) = <u>(5 x 3) + (5 x 9)</u>

2. (7+8)6 = <u>(6 x 7) + (6 x 8)</u>

3. 51 x 9 + 51 x 31 = 459 + 1581 = <u>2040</u>

4. 17 x 13 + 51 x 13 + 32 x 13 = 221 + 663 + 416 = <u>1300</u>

These should all be right :)

I used PEMDAS and the distributive property.

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3 0
2 years ago
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A 9-pack of golf balls costs $8.74. What is the unit price, rounded to the nearest cent?
MrRa [10]

Answer:

0.97 per ball

Step-by-step explanation:

Take the total cost and divide by the number of items

8.74 /9

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Rounding to the nearest cent

0.97

5 0
3 years ago
Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs. If x represents the number of 3 lb
olga2289 [7]

Answer:

3x = 50 - 10y

Step-by-step explanation:

Here, x represents the number of 3 lb weights and y represents the number of 10 lb weights,

So, total weight of 3 lb weights = 3x

And, the weight of 10 lb weights = 10y

Total weight of all his weights = 3x + 10y

According to the question,

Total weight = 50 lb,

⇒ 3x + 10y = 50

Or 3x = 50 - 10y

Which is the required equation.

Second option is correct.

3 0
3 years ago
8.4 + 0.18x = 0.32x
bogdanovich [222]

Answer:

  x = 60

Step-by-step explanation:

Perhaps you want the solution to this equation.

Subtract 0.18x from both sides:

  8.4 = 0.14x

Divide by the coefficient of x.

  8.4/0.14 = x = 60

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3 years ago
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The SAT mathematics scores in the state of Florida are approximately normally distributed with a mean of 500 and a standard devi
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The interval (300,700) corresponds to the part of the distribution lying within 2 standard deviations of the mean (since 500-2*100=300 and 500+2*100=700). The empirical rule states that approximately 95% of the distribution is expected to fall in this range.
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3 years ago
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