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Bess [88]
4 years ago
13

Please someone help me with these questions. will give you brainliest.

Mathematics
1 answer:
-Dominant- [34]4 years ago
8 0

1. a = 10 b = ? c = 24

10² + b² = 24²

100 + b² = 576

b² = 476

b ≅ 21.8

2. a = 3 b = ? c = 5

b = 4 because of the 3 4 5 triangle rule

3.  a = 9 b = ? c = 12

81 + b² = 144

b² = 63

b ≅ 7.9

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Mark has a collection of $20 bills and $5 bills. He has a total of 6 bills totaling $75.00. How many of each type of bill does h
Naya [18.7K]

Answer:

He has 3 $20 and 3 $5

Step-by-step explanation:

20 x 3 = $60

5 x 3 = $15

15 + 60 = $75

7 0
3 years ago
Teachers in a medium-sized suburban school district have an average salary of $47,500 per year, with a standard deviation of $4,
natima [27]

Answer: $49,875; $4,830C.

Step-by-step explanation:

The average salary of Teachers in a medium-sized suburban school district is $47,500 per year.

The standard deviation is $4,600

After negotiating with the school district, teachers recieve a 5% raise and a one-time $500 bonus. The bonus of $500 will not alter the mean and standard deviation because equal amount is added for each teacher.

5% increase in each teacher's salary would differ. Therefore, it will affect the mean and standard deviation by 5%. Therefore, the new mean would be

47500 + (5/100 × 47500) = $49875

The new standard deviation would be

4600 + (5/100 × 4600) = $4830

7 0
3 years ago
Read 2 more answers
For the algebraic expression (m+3)(m+7) how would you solve this? Please write it out on steps so I can write it in my notebook
djverab [1.8K]
Foil method
(mxm)+7m+3m+21
m*2+10m+21
8 0
3 years ago
determine the radius of the cone ,if the voulime of the cone is 125 cm to the power of 3 and the height of the cone is 12cm. Rou
Salsk061 [2.6K]

For this case we have that by definition, the volume of a cone is given by:

V = \frac {1} {3} * \pi * r ^ 2 * h

Where:

r: It is the radius of the cone

h: It is the height of the cone

According to the statement data we have:

h = 12 \ cm\\V = 125 \ cm ^ 3

Substituting in the formula:

125 = \frac {1} {3} * \pi * r ^ 2 * 12

We cleared the radius:

3 * 125 = \pi * r ^ 2 * 12\\\frac {3 * 125} {12 \pi} = r ^ 2\\9.9522 = r ^ 2\\r = \pm \sqrt {9.9522}

We choose the positive value:

r = 3.1547

We round and we have that the radius of the cone is:

r = 3.16 \ cm

ANswer:

r = 3.16 \ cm

4 0
3 years ago
This is 1 step equations. ASAP NEED HELP! Please show your work!<br><br> h = |-8| = 15
Gala2k [10]
The absolute value makes the -8 into a positive 8, then you subtract the 8 on both sides, giving you your answer 7. (Since 15-8=7)

6 0
3 years ago
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