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3 years ago

Please anyones good in math 13 a/b/c/d

Mathematics

1 answer:

inessss [21]3 years ago

3 0

Answer:

$\frac{7}{15}$

Step-by-step explanation:

4/5*3/3-1/3

4/5*3/3-1/3*5/5

4*3/15-5/15

4*3-5/15

12-5/15

7/15

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One jar filled with honey weighs 120 grams and one empty jar with half filled honey jar weighs 150 grams what is the weight of t

VMariaS [17]

Answer:

90 grams

Step-by-step explanation

Full = 120

half filled + empty = 150

half of 120 = 60

Therefore, a jar weighs 150 - 60

= 90 grams

5 0

1 year ago

Which equation has no solution?

Shalnov [3]

It would be C as no multiple of 3 can equal 13

7 0

2 years ago

Read 2 more answers

The mean diastolic blood pressure for a random sample of 70 people was 94 millimeters of mercury. if the standard deviation of i

Lyrx [107]

To solve this problem, we make use of the formula for Confidence Interval:

Confidence Interval = X ± z * σ / sqrt (n)

where X is the mean value, z is the z score which is taken from the standard tables, σ is the standard deviation, and n is the number of samples

z = 1.645 (at 90% Confidence Level)

Substituting the values into the equation:

Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)

Confidence Interval = 94 ± 2.36

Confidence Interval = 91.64, 96.36

Therefore at 90% confidence level, the blood pressure reading ranges from 91.64 mmHg to 96.36 mmHg.

5 0

2 years ago

R=4/3(p-q) solve for p

tino4ka555 [31]

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$r = \frac{4}{3} (p - q) \\$

Multiply sides by 3

$3r = 4(p - q)$

Divide sides by 4

$\frac{3r}{4} = p - q \\$

Add sides q

$\frac{3r}{4} + q = p \\$

$p = \frac{3}{4} r + q \\$

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3 0

2 years ago

Read 2 more answers

Lincoln Junior High School asked all of their eighth grade students the question, "What is your favorite

serg [7]

Answer: 18% of all students in the eighth grade at Lincoln Junior High School have pancakes as their

favorite breakfast, but we cannot conclude anything about the percent of the population who have

breakfast as their favorite meal.

Step-by-step explanation: A is incoorect 18% of all students at Lincoln Junior High School have breakfast as their favorite meal. As they only surveyed 8th grade students on their favorite breakfast we cannot say anthing for the rest of the school.

As for the second answer choice it asks what they like for breakfast not the favorite meal.

Hope this helps.

6 0

3 years ago