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Vinil7 [7]
3 years ago
9

What numbers multiply to 3 but add to 2

Mathematics
2 answers:
zysi [14]3 years ago
5 0

Answer:

k

Step-by-step explanation:

Fed [463]3 years ago
5 0

Answer:

-1 and 3

Explanation:

-1 x 3 = -3

-1 + (3) = 2

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A news report states that the 99% confidence interval for the mean number of daily calories consumed by participants in a medica
expeople1 [14]

Answer:

The sample mean is of 1925 calories.

The margin of error is of 75 calories.

The sample standard deviation is of 109.7992 calories.

Step-by-step explanation:

Sample mean:

The sample mean is the mean value of the two bounds of the confidence interval. So

M = \frac{1850 + 2000}{2} = 1925

The sample mean is of 1925 calories.

The margin of error

Difference between the bounds and the sample mean. So

2000 - 1925 = 1925 - 1850 = 75 calories.

The margin of error is of 75 calories.

Sample standard deviation:

Here, I am going to expand on the t-distribution.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 18 - 1 = 17

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 2.898

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

Since M = 75, T = 2.898, n = 18

M = T\frac{s}{\sqrt{n}}

75 = 2.898\frac{s}{\sqrt{18}}

s = \frac{75\sqrt{18}}{2.898}

s = 109.7992

The sample standard deviation is of 109.7992 calories.

6 0
2 years ago
in his last soccer game, chris made 9 saves and let in 3 goals. what was his ratio of saves to total shots on gold
Verdich [7]
9/3 then simplify it will be 1/3
5 0
3 years ago
Distribute and simply 7-2(x-5)+3x
KonstantinChe [14]

The given expression is

7-2(x-5)+3x

First, we use the distributive property to get rid of the parenthesis.

7-2x+10+3x

Then, we reduce like terms. -2x and 3x are like terms, also 7 and 10 are like terms.

3x-2x+10+7=x+17<h2>Therefore, the simplest form of the given expression is <em>x + 17</em>.</h2>
4 0
10 months ago
(f o g) (x) =<br><br>f(x) =x^2 - 2x , g(x) = x + 8<br><br>x^2 ( x squared) ​
lana [24]

Answer:x

2

(

x

s

q

u

a

r

e

d

)

.

(

f

o

g

)

(

x

)

=

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x

+

8

)

=

x

2

+

14

x

+

48

x

2

(

x

s

q

u

a

r

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d

)

=

x

2

s

2

q

2

u

2

a

2

r

2

e

2

d

2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Compare the subtraction problems (6 8 − 5 8 = 1 8 ) and (6 9 − 7 9 = −1 9 ). Why is the answer to the first problem positive and
Dmitrij [34]

Answer:

A D E

Step-by-step explanation:

A. In the second problem, the first fraction is less than the second fraction.

D. If you subtract a lesser number from a greater number, the answer is positive.

E. If you subtract a greater number from a lesser number, the answer is negative.

6 0
3 years ago
Read 2 more answers
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