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3 years ago

I need help with this

Mathematics

1 answer:

STALIN [3.7K]3 years ago

4 0

the answer to the problem is150

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Enter your answer and show all the steps that you use to solve this problem in the space provided.

Greeley [361]

Answer:

The steps are below. Thanks.

Step-by-step explanation:

Equation= 0.6(1)+0.8=1.4

1. Calculate the product. Any expression multiplied by 1 remains the same.

0.6×1+0.8 to 0.6+0.8

2. Calculate. Add the numbers.

0.6+0.8 to 1.4

3. Answer found!

Alternative Form of the final answer 1.4 could be: 7/5 or 1 2/5.

Hope this helps and if you could mark me as brainliest. Thanks!

7 0

3 years ago

A statistics teacher started class one day by drawing the names of 10 students out of a hat and asked them to do as many pushups

HACTEHA [7]

Answer: b. 8.56 to 21.44

Step-by-step explanation:

Let $\mu$ be the mean number of pushups that can be done.

As per given , we have

Sample size : n= 10

Degree of freedom = n-1=9

Sample mean : $\overline{x}=15$

Sample standard deviation : $s=9$

Significance level : α=1-0.95=0.05

From t- distribution table ,

Critical two -tailed t-value for α=0.05 and df = 9 is

$t_{\alpha/2, 9}=t_{0.025,9}=2.2622$

Confidence interval for $\mu$ is given by :-

$\overline{x}\pm t*\dfrac{s}{\sqrt{n}}$

$=15\pm (2.2622)\dfrac{9}{\sqrt{10}}\\\\\approx 15\pm 6.44=(15-6.44,\ 15+6.44)\\\\=(8.56,\ 21.44)$

Hence, the 95% confidence interval for the true mean number of pushups that can be done is 8.56 to 21.44.

5 0

3 years ago

Write the polynomial in standard form 8-5x+x^3-2x^4

yan [13]

Answer:

-2x^4+x^3-5x+8

Step-by-step explanation:

8-5x+x^3-2x^4

Write the polynomial from highest powers of x to lowest

-2x^4+x^3-5x+8

8 0

3 years ago

What is 0.6 divided by 13.2

Romashka [77]

Answer:

0.04545454545

Step-by-step explanation:

can i have brainliest pls?

6 0

3 years ago

Find all real numbers $s$ such that $-2(s - 7) > 4s + 8$. Give your answer in interval notation.

Stolb23 [73]

Answer:

$s\in (-\infty,1)$

Step-by-step explanation:

Solve the inequality $-2(s - 7) > 4s + 8$

Use distributive property:

$-2s+14>4s+8$

Subtract 4s:

$-2s+14-4s>4s+8-4s\\ \\-6s+14>8$

Subtract 14:

$-6s+14-14>8-14\\ \\-6s>-6$

Divide by -6 (do not forget to change sign, because division by negative number changes the sign):

$s$

5 0

3 years ago