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lara [203]
2 years ago
7

Answer for 20 points

Mathematics
1 answer:
Georgia [21]2 years ago
7 0

Answer:

I'd have to say 12.5

Step-by-step explanation

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Philip ran 4 3/8 miles yesterday. Michael ran 1 5/8 miles yesterday.
deff fn [24]

Answer:

2 7/8

Step-by-step explanation:

3 0
3 years ago
HHHHHHHHHEEEEEELLLLLLLLPPPPPPPP how do I do this
lyudmila [28]

Answer:

1/6

Step-by-step explanation:

2/3 times 1/4 is 2/12. 2/12 simplified is 1/6, so 1/6 is your answer.

7 0
3 years ago
If 9p=5q which is the correct ratio of p:q
tatyana61 [14]

Answer: LHS = RHS

Step-by-step explanation:

Heya!!

Here, we need to compare the LHS and RHS

So, here is the solution -

(9p-5q)²+ 180 pq = (9p+5q)

LHS

= (9p-5q)²+ 180 pq

= 81 p² + 25 q² + 90 pq + 180 pq

= (9p - 5q) ²

RHS = (9p - 5q) ²

Hence, proved => LHS = RHS

Hope it helps!

4 0
2 years ago
Read 2 more answers
Caleb is making a drawing of a window that is 9 inches high. However, his ruler that he’s using only measures in centimeters. If
puteri [66]

Answer:

22.5 cm

Step-by-step explanation:

9 inches=9×2.5 cm =22.5 cm

5 0
2 years ago
An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the
lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = \sigma = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for  0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

z=\frac{x-u}{\sigma}

For z = -1.56, we get:

-1.56=\frac{x-74.2}{9.6}\\\\ x = 59

For z = -0.88, we get:

-0.88=\frac{x-74.2}{9.6}\\\\ x = 66

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

7 0
3 years ago
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