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2 years ago

Find the difference of 7 2/3 and 6 3/7

Mathematics

2 answers:

Reika [66]2 years ago

8 0

Answer:

Fraction answer (about):
1 1/4

Decimal answer (about):
1.24

Step-by-step explanation:

7 2/3 - 6 3/7 =
1.2380952381

1.2380952381 = about 1.24

The difference between 7 2/3 and 6 3/7 = 1.24
1.24 in fraction form is about 1 1/4

Have a great rest of your day
#TheWizzer

galina1969 [7]2 years ago

7 0

Answer:26/21

Step-by-step explanation:

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Please help ASAP please give both answers :)

atroni [7]

Answer:

Step-by-step explanation:

If we want to share £5 to the ratio of 1/3 we should follow this steps :

our ratio is 1/3 so we should add 1 and 3 together to find the total number of parts : 1+3=4
divide the total amount by the number of parts : 5/4 = 1.25
multiply each number in the ratio by 1.25 : 1.25*1=1.25 and 1.25*3=3.75

the answer is 1.25 and 3.75

It was obvious from the beginning that the answer would be the last one since ut had two numbers

following the same steps you get again in the second question :

6 ; 14

7 0

3 years ago

In studies for a medication, 3 percent of patients gained weight as a side effect. Suppose 643 patients are randomly selected.

timofeeve [1]

Part a)

It was given that 3% of patients gained weight as a side effect.

This means

$p = 0.03$

$q = 1 - 0.03 = 0.97$

The mean is

$\mu = np$

$\mu = 643 \times 0.03 = 19.29$

The standard deviation is

$\sigma = \sqrt{npq}$

$\sigma = \sqrt{643 \times 0.03 \times 0.97}$

$\sigma =4.33$

We want to find the probability that exactly 24 patients will gain weight as side effect.

P(X=24)

We apply the Continuity Correction Factor(CCF)

P(24-0.5<X<24+0.5)=P(23.5<X<24.5)

We convert to z-scores.

$P(23.5 \: < \: X \: < \: 24.5) = P( \frac{23.5 - 19.29}{4.33} \: < \: z \: < \: \frac{24.5 - 19.29}{4.33} ) \\ = P( 0.97\: < \: z \: < \: 1.20) \\ = 0.051$

Part b) We want to find the probability that 24 or fewer patients will gain weight as a side effect.

P(X≤24)

We apply the continuity correction factor to get;

P(X<24+0.5)=P(X<24.5)

We convert to z-scores to get:

$P(X \: < \: 24.5) = P(z \: < \: \frac{24.5 - 19.29}{4.33} ) \\ = P(z \: < \: 1.20) \\ = 0.8849$

Part c)

We want to find the probability that

11 or more patients will gain weight as a side effect.

P(X≥11)

Apply correction factor to get:

P(X>11-0.5)=P(X>10.5)

We convert to z-scores:

$P(X \: > \: 10.5) = P(z \: > \: \frac{10.5 - 19.29}{4.33} ) \\ = P(z \: > \: - 2.03)$

$= 0.9788$

Part d)

We want to find the probability that:

between 24 and 28, inclusive, will gain weight as a side effect.

P(24≤X≤28)=

P(23.5≤X≤28.5)

Convert to z-scores:

$P(23.5 \: < \: X \: < \: 28.5) = P( \frac{23.5 - 19.29}{4.33} \: < \: z \: < \: \frac{28.5 - 19.29}{4.33} ) \\ = P( 0.97\: < \: z \: < \: 2.13) \\ = 0.1494$

3 0

3 years ago

Charlene had 5,750 pieces of penny candy. She sold 3/5 of them and divided rest into 5 equal bags to give her friends for Hallow

Musya8 [376]

(3/5)*5750=3450
3450÷5=690

6 0

3 years ago

Buddy has 3 $1.00 bills.5 quarters and 4 dimes He sent 3.70 on lunch how much money does he have left

evablogger [386]

Answer:

He started with $4.65.

so 4.65-3.70= .95

Buddy has $0.95 left.

Hope this helps! Please mark as brainliest!!! xx :)

Have a fantastic day!!

Step-by-step explanation:

6 0

3 years ago

Please help me!!!!!! <br><br>What is the measure of angle Z?<br><br>

rodikova [14]

Answer:

z = 56 degrees

Step-by-step explanation:

y = 124 because y is adjacent to 124 degrees

y + z = 180

180 - 124 = 56

7 0

3 years ago