4 years ago

Please help answer this anyone

Mathematics

1 answer:

satela [25.4K]4 years ago

5 0

Answer:

180 dollars

Step-by-step explanation:

You might be interested in

What is the quotient of 2+3x2-47-12) - (x2 + 5x+8)

kap26 [50]

The quotient to this answer is -x^2-5x-59

4 0

3 years ago

40. Find the length of the hypotenuse, c in this triangle. Give the answer in the form c=__.

Alla [95]

Answer:

c=5

Step-by-step explanation:

using pythagorean theorem, 3 squared plus 4 squared is 25. by finding square root of 25, you get 5

7 0

3 years ago

Read 2 more answers

Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wood

Stells [14]

<u>Answer with explanation:</u>

As per given , we have

A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.

i.e. n= 50

Degree of freedom = n-1=49

$\overline{x}=3.1\ mm$

$s=0.72\ mm$

The point estimate of the population mean is equals to the sample mean.

i.e. The best estimate for the length of gribbles= 3.1 mm

Also, population standard deviation is unknown , then the confidence interval would be :

$E=t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :

$t_{0.05/2, 49}=t_{0.025, 49}= 2.010$

Now, Margin of error : $E=(2.010)\dfrac{0.72}{\sqrt{50}}$

$=0.204664986747\approx0.20$

95% confidence interval : $(\overline{x}-E,\ \overline{x}+E)$

$i.e.\ (3.1-0.20, 3.1+0.20)=(2.90,\ 3.30)$

3 0

4 years ago

Class A had 33 students and class B had 21 students. A number of students were moved from class A to class B so the classes now

Alexxx [7]

Answer:

i think its 12.12 kids got moved

Step-by-step explanation:

i just subtracted 33 - 21 = 12...

6 0

3 years ago

The length of a rectangle is 4 centimeters more than the width.if both the width and the length were tripled,the area would be 1

Sonbull [250]

Since both the length and the width are tripled, the area will be nine times larger. To counter this, divide by nine. 108/9=12 Divide this by 2 to get one length and one width. You get 6. 1+5=6 and 1 is 4 smaller than 5, so the width of this rectangle is 1 cm and the length is 5 cm.

3 0

4 years ago