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ruslelena [56]
3 years ago
8

Here are the scores that Jenna has

Mathematics
1 answer:
amid [387]3 years ago
5 0

Answer:

the variance is 6.6

sry for not showing work

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Kyle gave 2/7 of his money to his wife and spent 3/5 of the remainder. If he had $300 left, how much money did he have at first?
weqwewe [10]

<u>Answer: </u>

Kyle gave 2/7th  of his money to his wife and spent 3/5 of the remainder. If he had $300 left, the money had by Kyle at first is $1050

<u>Solution: </u>

Step 1:

Consider “x” as the money which Kyle had initially.  

From question, Kyle gave 2/7th of his money to his wife. So the remaining money left with Kyle is given as,

= 1 - \frac{2}{7}

= \frac{7 - 2}{7} = \frac{5}{7} ----- eqn 1

Now the remaining money left with Kyle is 5/7th.Given that Kyle spent 3/5 of the remaining money.  

Now the remaining money left with Kyle is given as  

= 1 - \frac{3}{5} = \frac{5 - 3}{5} = \frac{2}{5}

Now kyle is left with $300, which is 2/5th of the initial money x .

We get equation as  

\frac{2}{5} x=300

2x = 1500

x = 750

Now Kyle is left with 750$ which is 5/7th of the initial amount x.( by using eqn 1)

We get equation as

\frac{5}{7} x = 750

5x = 5250

x = 1050

So the amount had by Kyle at first is $1050

7 0
3 years ago
Tami bought a jacket that normally costs $84 at 15% markdown. She then paid 7% sales tax.
Alecsey [184]
15%=.15
84 x .15=$12.60 discount
subtract from $84
84-12.60= $71.40
multiply by .07 sales tax
71.40 x .07= 4.998  rounded off to $5.00
total cost  $71.40 + $5.00=
$76.40 is what Tami paid for the coat

hope this helps
8 0
4 years ago
Find the volume of this right rectangular prism. [Type your answer as a number.]
Paha777 [63]

Answer:

200m

Step-by-step explanation:

To find volume you multiply each side, length, width, and height. 5 times 4 is 20, and 20 times 10 is 200

7 0
3 years ago
Identify the figure. Then name the bases, faces, edges, and vertices. PLEASE ANSWER FAST ILL MARK BRAINLIEST.
Pani-rosa [81]

Answer:

  1. Square pyramid
  2. 1 square base (on the bottom)
  3. 5 faces
  4. 8 edges
  5. 5 vertices

3 0
3 years ago
-3(12 - m) = -1(m - 8)
victus00 [196]

Answer:

m = 7

Step-by-step explanation:

- 3(12 - m) = - 1(m - 8)

- 36 - (- 3m) = - m - 8

- 36 + 3m = - m - 8

- 36 + 3m + m = - m + m - 8

- 36 + 4m = - 8

- 36 + 36 + 4m = - 8 + 36

4m = 28

4m ÷ 4 = 28 ÷ 4

m = 7

7 0
3 years ago
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