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andreyandreev [35.5K]
3 years ago
13

HELP DUE IN 2 MIN

Mathematics
2 answers:
Bas_tet [7]3 years ago
5 0

Answer:

15

Step-by-step explanation:

18/3=6

15/3=5

swat323 years ago
3 0

Answer:

15

Step-by-step explanation:

If the ratio is 6:5 and we know the boys are 18, we have 18:?

18/6=3, so we have to do 5*3. 5*3=15.

The ratio is 18:15, the number of girls in the classroom is 15

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At what point do the lines y = x + 7 and y = 5x - 13 intersect?​
professor190 [17]

Answer:

The lines y = x + 7 and y = 5x - 13 intersect at (3.5,10.5)

5 0
3 years ago
What means lateral in math
Len [333]
Lateral surface area is the sum of all sides of a 3D object EXCEPT it's top and bottom bases.
7 0
4 years ago
Kyle held a balloon 8ft off the ground above his head and Ava is standing 15 feet directly to g the right of Kyle how far is Ava
ryzh [129]

Answer:

17

Step-by-step explanation:

Pythagorean theory baby! Okay so the Pythagorean theory is a² + b² = c² so lets draw a triangle and label our sides. So we know 8² + 15² = c² so I'm going to find the square root of all of our numbers. We get 64 + 225 = c² so then add 64 + 225 = 289 then I take the square root of 289 which equals 17 . This answer also makes sense because out hypotenuse should always be bigger then the legs.

I'm pretty sure thats right, Hope this helps.

5 0
3 years ago
Which equation represents a proportional relationship that has a constant of proportionality equal to 0.7?
Elena L [17]

Answer:

the answer is c i think

5 0
4 years ago
A random sample of 64 SAT scores of students applying for merit scholarships showed an average of 1400 with a standard deviation
Lesechka [4]

Answer:

1341.2<x<1458.8

Step-by-step explanation:

Given

sample size n = 64

standard deviation = 240

average mean = 1400

z score at 95% CI = 1.96

Required

confidence interval

Confidence interval = xbar ± (z*s/√n)

CI = 1400 ± (1.96*240/√64)

CI = 1400 ± (1.96*240/8)

CI = 1400 ± (1.96*30)

CI = 1400 ± 58.8

CI = (1400-58.8, 1400+58.8)

CI = (1341.2, 1458.8)

Hence the confidence interval for the population is 1341.2<x<1458.8

4 0
3 years ago
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