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3 years ago

Please help Worth 15 points :)

Mathematics

1 answer:

Oliga [24]3 years ago

4 0

Answer:

1. 8 2/3

2. 2 4/5

Step-by-step explanation:

1: Multiple across

First, change into improper fractions

8/3 and 13/4

8 * 13 = 104

3 * 4 = 12

104/12

8 8/12

Divide each side by 4

8 2/3

2: Keep, change. flip

Keep the first fraction. Change the sign. Flip the next fraction is how you divide fractions. First, put them into improper fractions.

5 * 9 + 4 = 49/5

2 * 3 + 1 = 7/2

49/5 (divided by) 7/2

49/5 * 2/7 = 98/35

2 28/35

Divide both the 28 and 35 by 7

2 4/5

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At the beginning of the month, Leona's checking account had $2,344.98 in it. Since then, she has written checks for $525.00, $33

TiliK225 [7]

Should would have $1,642.86 in her account

3 0

3 years ago

Can someone help me out? Just a little confused

ss7ja [257]

Answer:

Option D

Step-by-step explanation:

The volume is the product of three dimensions of the prism:

V = bh = lwh

So the option D is correct

(4x3)x2

6 0

3 years ago

Jerry took a sample of 4 employees in his office and observed how many hours they each worked one day.

Illusion [34]

The error in Jerry's calculation is 4.84

The number of employees, N = 4

The mean is calculated as:

$\mu = \frac{10+2+4+8}{4} \\\mu = \frac{24}{4} \\\mu = 6$

The formula for the standard deviation is:

$SD =\sqrt{\frac{\sum{(x-\mu)^2}}{N} }$

This can be further calculated as:

$SD = \sqrt{\frac{(10-6)^2+(2-6)^2+(4-6)^2+(8-6)^2}{4} }\\\\SD = \sqrt{\frac{4^2+(-4)^2+(-2)^2+(2)^2}{4} } \\\\SD = \sqrt{\frac{16+16+4+4}{4} } \\\\SD = \sqrt{\frac{40}{4} } \\\\SD = \sqrt{10} \\\\SD = 3.16$

Jerry thinks the Standard Deviation = 8

The true Standard Deviation = 3.16

Error = |True value - Measured value|

Error = |3.16 - 8|

Error = 4.84

Learn more here: brainly.com/question/18562832

3 0

2 years ago

Read 2 more answers

NO ONE IS HELPINNGGGG PLZZZZ 30 PTS +brainliest

andrew11 [14]

Answer:

360

Step-by-step explanation:

all quadrilateral angle sums are 360° no matter how you change it

7 0

2 years ago

Find the measurement indicated. Round your answer to the nearest tenth. NO LINKS!!

olganol [36]

Answer:

m∠A ≈ 39.865°

Step-by-step explanation:

C² = 16² + 15² - 2 × 16 × 15 × cos (97°)

=> C = 23.22708085

sin (97°)/23.22708085 = sin A/15

=> sin A = sin (97°) × 15/23.22708085

=> A = $sin^{-1}$ (sin (97°) × 15/23.22708085)

=> A ≈ 39.865

6 0

3 years ago