All categories

4 years ago

I need the answers for 6 through 11 pls I don’t understand, answer fast if u can pls ☺️

Mathematics

1 answer:

MrRa [10]4 years ago

6 0

6. 18
7. 40
8. 36
9. 10
10. 24
11. 21
12. 8/18=4/9
13. 24/35(cannot be simplified)
14. 9/20(cannot be simplified) hope this helps

You might be interested in

Which statements are true regarding the area of circles and sectors? Check all that apply.

natita [175]

Answer:

Well, Those best choice will be is: A. The area of a circle depends on the length of the radius.

B. The area of a sector depends on the ratio of the central angle to the entire. D. The area of the entire circle can be used to find the area of a sector. E. The area of a sector can be used to find the area of a circle. Hope This Helps!!~

5 0

3 years ago

Read 2 more answers

the cost of five different pairs of pants in a department store are $39.99, $31.99, $19.99, $23.99, and $26.99. What is the mean

oksano4ka [1.4K]

Keep in mind that means is the same as asking for the average. all you need to do is add all the values and divide them by the number of values, which is 5

<span>$39.99 + $31.99 + $19.99 +$23.99 + $26.99= 142.95

mean= 142.95/5 = 28.59</span>

8 0

3 years ago

Read 2 more answers

Solve the system of equations. 4y + 11x – 67 = 0 2y + 5x - 19 = 0 x= y=

katen-ka-za [31]

Answer:

x = 29, y = -63

Step-by-step explanation:

Solve the following system:

{4 y + 11 x - 67 = 0 | (equation 1)

{2 y + 5 x - 19 = 0 | (equation 2)

Express the system in standard form:

{11 x + 4 y = 67 | (equation 1)

v5 x + 2 y = 19 | (equation 2)

Subtract 5/11 × (equation 1) from equation 2:

{11 x + 4 y = 67 | (equation 1)

{0 x+(2 y)/11 = -126/11 | (equation 2)

Multiply equation 2 by 11/2:

{11 x + 4 y = 67 | (equation 1)

{0 x+y = -63 | (equation 2)

Subtract 4 × (equation 2) from equation 1:

{11 x+0 y = 319 | (equation 1)

{0 x+y = -63 | (equation 2)

Divide equation 1 by 11:

{x+0 y = 29 | (equation 1)

{0 x+y = -63 | (equation 2)

Collect results:

Answer: {x = 29, y = -63

3 0

3 years ago

Read 2 more answers

a tower casts a shadow 7 m long a vertical stick casts a shadow 0.6 m long if the stick is 1.2 m high how high is the tower

dedylja [7]

The tower is 14 meters high.

Please mark as brailiest answer if you can.

4 0

4 years ago

How many whale sharks would a researcher need to measure so that 90% confidence level would have a margin of error of 0.25

Vika [28.1K]

About 1407 sharks would be needed to have a margin of error of 0.25

<h3>What is margin of error?</h3>

Margin of error is used to determine by what value there is deviation from the real value. Margin of error (E) is given by:

$E=Z_\frac{\alpha}{2} *\frac{standard\ deviation}{\sqrt{sample\ size} }$

The 90% confidence level have a z score of 1.645. Hence for E = 0.25, standard deviation = 5.7 feet, hence:

$0.25=1.645*\frac{5.7}{\sqrt{sample\ size}}\\ \\sample\ size=1407$

About 1407 sharks would be needed to have a margin of error of 0.25

Find out more on margin of error at: brainly.com/question/10218601

8 0

2 years ago