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3 years ago

Use front-end estimation to estimate the sum 56.7+23.44

Mathematics

1 answer:

kherson [118]3 years ago

6 0

Answer:

80.14

Step-by-step explanation:

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A normal distribution has a mean of 61 and a standard deviation of 15. What is the median?

vivado [14]

Answer: median = 61

Reason:

A normal distribution is perfectly symmetric. Such distributions have mean = median = mode.

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1 year ago

Three pounds less than twice Mike's weight is 215 pounds. What is his weight?

IgorC [24]

Answer:

427

Step-by-step explanation:

Mike's weight is 215 twice that would be 430. Subtract three and , that 'll give you 427

5 0

3 years ago

Read 2 more answers

Refer to the Venn diagram that represents the sports students chose to play at South High School last year. Select the correct d

vovikov84 [41]

I don't see a diagram, but if the portion of the tennis region you are asked to analyze doesn't intersect anywhere else/any other regions pertaining to other sports, wouldn't the sport chosen by these students be solely tennis?

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3 years ago

At Melville High School 20% of the girls and 50% of the boys went to a basketball game. Since 40% of all the students were girls

Dafna11 [192]

Answer:

$38\%$

Step-by-step explanation:

$Let\ total\ number\ of\ students=x\\\\Number\ of\ Girls=40\%\ of\ x\\\\Number\ of\ girls=\frac{40}{100}\times x=0.4x\\\\Number\ of\ boys=x-0.4x=0.6x\\\\$

Students went to game:

$Girls\ went\ to\ game=20\%\ of\ 0.4x\\\\Girls\ went\ to\ game=\frac{20}{100}\times 0.4x=0.2\times 0.4x=0.08x\\\\Boys\ went\ to\ game=50\%\ of\ 0.6x\\\\Boys\ went\ to\ game=\frac{50}{100}\times 0.6x=0.3x\\\\Students\ went\ to\ game=Girls\ went\ to\ game+Boys\ went\ to\ game\\\\Students\ went\ to\ game=0.3x+0.08x=0.38x\\\\Percentage\ of\ students\ went\ to\ game=\frac{0.38x}{x}\times 100=38\%$

4 0

3 years ago

Simplify. .

garri49 [273]

Answer:

6y+4

Step-by-step explanation:

-(2x-3y) +5x +2 -3x +3y +2

(-2x -3x +5x) (3y +3y) (2 +2)

0 +6y +4

6y +4

6 0

3 years ago