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son4ous [18]
3 years ago
13

HELP ME PLEASE! I’m so dumb and don’t understand this help me!!!

Mathematics
1 answer:
Verdich [7]3 years ago
3 0

First, simplify the first two terms: 3sqrt(x) - 2sqrt(x). This reduces to sqrt(x).

Next, add 4sqrt(x) to this 1sqrt(x); the sum and answer to this question is 5sqrt(x).


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You collected the following data about the colors of dresses at the prom:
cluponka [151]
Sum=14 + 37 + 22 + 56 + 33 = 152 => 100%
red = 14 => x%

100% / 152 = x / 14
x = 100 × 14 / 152
x = 1400 / 152
x = 9,21% = 9%
6 0
3 years ago
Read 2 more answers
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gen
erma4kov [3.2K]
You need to use the binomial probability formula:
p(k) =  \frac{n!}{k!(n-k)!}  p^{k}  (1-p)^{n-k}

where:
n = total number of events = 10
k = number of events we are testing = 6
p = probability of event happening = 0.5

p(6) = \frac{10!}{6!(10-6)!} 0.5^{6} (1-0.5)^{10-6}
= 210×0.015625×0.0625
= 0.205078

Hence, the probability of getting 6 boys out of 10 births is p = 0.205.
6 0
4 years ago
Johnny earned a total of $15 for 3
solniwko [45]

Answer:

5 dollars a hour. ,

Step-by-step explanation:

count by fives

4 0
4 years ago
How do you find "a" in -10+a=6a-7a please help I do not know how to find what the answer is.
Sunny_sXe [5.5K]
-10 + a = 6a - 7a

Rearrange the left hand side

a - 10 = 6a - 7a

Simplify 6a - 7a

a - 10 = -a

Add a on both sides

2a - 10 = 0

Add 10 on both sides

2a = 10

Divide by 2 on both sides

a = 5
4 0
3 years ago
NO LINKS
Olin [163]

Answer:

y = 3.5X - 6921.2

Step-by-step explanation:

Given the data :

X :

1990

1992

1994

1996

1996

Y :

45

51

57

61

75

Using an online regression calculator ; the regression model obtained is : y = 3.5X - 6921.2

Where ; slope = 3.5 ; intercept = - 6921.2

7 0
3 years ago
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