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2 years ago

Some studies show that high school students are more successful when the school day begins after 9 am. To test this theory,

Mathematics

1 answer:

mrs_skeptik [129]2 years ago

6 0

Answer:

i think that the answer is b

Step-by-step explanation:

because there doing an experiment in a controlled environment just to see what happen and if it works or if its true.

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Write an inequality and solve

salantis [7]

Answer:

n, the integer;

8+6n< -42

7 0

3 years ago

A foot ball field measures 100m by 72m. A school marks a football field similar in shape to a fullsize football field but only 3

Anna35 [415]

Answer: 21.6 m

Step-by-step explanation:

Given

A football field measures $100\ m\times 72\ m$

If a football field similar in shape to a full size has a length $l=30\ m$

The ratio of the length of the original to the small field is the same

Assume the width of the small field is w

$\therefore \dfrac{100}{30}=\dfrac{72}{w}\\\\\Rightarrow w=30\times \dfrac{72}{100}\\\\\Rightarrow w=21.6\ m$

Thus, the width of the field is 21.6 m

6 0

2 years ago

What is the answer to -3(x+4)+15=6-4x

vredina [299]

The answer is -12

Remember pemdas

5 0

2 years ago

INEQUALITIES! PLEASE HELP, 25 POINTS FOR JUST 8 QUESTIONS!!

Helen [10]

1) Third option

2) Third option

3) First option

4) Third option

5) Third option

6) 2y - 2 < 14

2y < 16

y < 8 (Third option)

7) 25 > 1 - 3d

24 > -3d

-8 < d (Second option)

Hope this helps! ;)

8 0

2 years ago

On Black Friday the new LOL phone was discounted 45%. If the original price was $250.00 and the sales tax is 6%, what would be t

pychu [463]

Answer:

$145.75

Step-by-step explanation:

First step is to find the price after discount

Discount = original price * discount percent

= 250 *.45

=112.50

The discounted price is the original price less the discount

Discounted price = original price-discount

=250-112.50

=137.50

Now we need to calculate the tax. The tax is the discounted price times the tax rate.

Tax=discounted price * tax rate

= 137.5 *.06

8.25

To find the total cost, we add the tax to the discounted price

Total cost = discounted price + tax

= 137.5 + 8.25

=145.75

8 0

3 years ago