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Mamont248 [21]
3 years ago
14

Evaluate 5.6t for t = 0.7​

Mathematics
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

3.92

Step-by-step explanation:

.7*5.6=3.92

hope that helps!

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Question 5 of 25
kykrilka [37]

Answer:

the correct answer is : option c)infinitely many

EXPLANATION:

infinite lines pass through a point . so, infinite solution is the correct answer

4 0
1 year ago
30 is 60% of <br> due today
Paha777 [63]

Answer:

30 is 60% of 50.

Step-by-step explanation:

30 ÷ 60% = 50

7 0
3 years ago
Set A of six numbers has a standard deviation of 3 and set B of four numbers has a standard deviation of 5. Both sets of numbers
Alenkinab [10]

Given:

\sigma_A=3

n_A=6

\sigma_B=5

n_B=4

\overline{x}_A=\overline{x}_B

To find:

The variance. of combined set.

Solution:

Formula for variance is

\sigma^2=\dfrac{\sum (x_i-\overline{x})^2}{n}      ...(i)

Using (i), we get

\sigma_A^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{n_A}

(3)^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}

9=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}

54=\sum (x_i-\overline{x}_A)^2

Similarly,

\sigma_B^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{n_B}

(5)^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}

25=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}

100=\sum (x_i-\overline{x}_B)^2

Now, after combining both sets, we get

\sigma^2=\dfrac{\sum (x_i-\overline{x}_A)^2+\sum (x_i-\overline{x}_B)^2}{n_A+n_B}

\sigma^2=\dfrac{54+100}{6+4}

\sigma^2=\dfrac{154}{10}

\sigma^2=15.4

Therefore, the variance of combined set is 15.4.

7 0
2 years ago
The graph shows a dilation with respect to the origin of rhombus RHOM. what is the factor of dilation?
Sonja [21]

Answer: A

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Geometry Please Help.. (22 points)
WINSTONCH [101]
Good luck my G. I gotta answer 2 questions so I can post pics of my test
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3 years ago
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