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3 years ago

What’s a common denominator for -3/4 and 5/12

Mathematics

1 answer:

Bas_tet [7]3 years ago

8 0

Answer:

Step-by-step explanation:

We need a common multiple for 4 and 12

4,8,12

We can stop since 4 is a factor of 12

The common denominator is 12

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Tami rode her bicycle 22.5 miles in 4 hours.Which gives the best estimate of how far Tami rode in 1 hour?

Verizon [17]

If she rode 22.5 miles in 4 hours we can do 22.5 miles then divide 22.5 by 4 that would give us the answer of 5.625 hours

6 0

3 years ago

1/2 + (-1/4)=????????????

erica [24]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

$\frac{1}{2}$ = $\frac{2}{4}$ We need a common denominator before we can add.

$\frac{2}{4}$ + $\frac{-1}{4}$ means the same thing as

$\frac{2}{4}$ - $\frac{1}{4}$ = $\frac{1}{4}$

5 0

2 years ago

A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p

charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

$n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\$

We calculate the standar deviation:

$\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176$

We calculate the value of the test statistic:

$z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85$

So the value of the test statistic is -0.85.

5 0

4 years ago

What is a Altitude?

trasher [3.6K]

Altitude, like elevation, is the distance above sea level. Areas are often considered "high-altitude" if they reach at least 2,400 meters (8,000 feet) into the atmosphere. ... This is called indicated altitude, and is measured by an instrument called an altimeter. As altitude rises, air pressure drops.

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4 years ago

Read 2 more answers

Please help me solve I forgot how to solve this using the bedmas/pemdas form: 3x10+2xnegative2=???

ivanzaharov [21]

Answer:

3×10+2×-2

30+(-4)

30-4

5 0

3 years ago

Read 2 more answers