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Lelu [443]
3 years ago
14

Help me please!! will mark brainliest!

Mathematics
2 answers:
WITCHER [35]3 years ago
8 0
10 hours seems like the most reliable answer because it matches up the best
Ahat [919]3 years ago
4 0

Answer:

18 hours of study should be the answer

Step-by-step explanation:

You might be interested in
the mean of normally distributed test scores is 80 and the standard division is 5. If there are 186 test scores in the data samp
Marizza181 [45]

Answer:

63

Step-by-step explanation:

score 75 is one standard dev below the mean ====>to the mean  encompasses approx 34% of scores

.34 * 186 = 63

5 0
2 years ago
A triangle has side lengths of (1.3k+3.5m)(1.3k+3.5m) centimeters, (4.1k-1.6n)(4.1k−1.6n) centimeters, and (9.7n+4.4m)(9.7n+4.4m
Scorpion4ik [409]

Answer:

(5.4k+7.9m+8.1n) centimeters

Step-by-step explanation:

Given the side length of a triangle;

S1 = (1.3k+3.5m) cm

S2 = (4.1k-1.6n) cm

S3 = (9.7n+4.4m) cm

Perimeter of the triangle = S1+S2 + S3

Perimeter of the triangle = (1.3k+3.5m) + (4.1k-1.6n) + (9.7n+4.4m)

Collect the like terms;

Perimeter of the triangle = 1.3k+4.1k+3.5m+4.4m-1.6n+9.7n

Perimeter of the triangle = 5.4k+7.9m+8.1n

Hence the expression that represents the perimeter of the triangle is (5.4k+7.9m+8.1n) centimeters

5 0
3 years ago
A dressmaker needs to cut 12-inch pieces of ribbon from rolls of ribbon that are 6 feet in length. How many 12-inch pieces can t
IrinaK [193]

Answer:

60

Step-by-step explanation:

because 12 inches is one foot so there’s 6 feet per 6 feet of ribbon and there’s 10 of these ribbons so 6 times 10 is 60

6 0
3 years ago
Pentagon ABCDE and pentagon A’B’C’D’E are shown on the coordinate plane below:
fiasKO [112]

the first one ((x+8, y+2), r x-axis)

3 0
2 years ago
Can you also explain how you got the answer
Alja [10]

Answer:

I recoment using the formula because its different ways its taught

Step-by-step explanation:

maybe look up different formula's

5 0
2 years ago
Read 2 more answers
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