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xenn [34]
3 years ago
12

Factorise fully 6x^2 - 15x

Mathematics
1 answer:
Ksivusya [100]3 years ago
7 0

Answer:

The answer is :

3x(2x-5)

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7+a/3=5<br>A. -2<br>B. 3 <br>C. -6<br>D. 15<br>I need the answer​
Ymorist [56]
The answer is C. Since the sum is less than seven, we need to subtract a fraction. -6 over three is -2. 7-2 is five
8 0
3 years ago
Read 2 more answers
A rectangle has a length of (5r+8) inches and a width of (2r + 4) inches. What is the area of the rectangle?
Fiesta28 [93]

Answer:

Option 2

Step-by-step explanation:

First distribute 5r to 2r and 4 to get 10r^2+20r

Then distribute 8 to 2r and 4 to get 16r+32

After that you combine the like terms, so combine 20r and 16r to get 36r

Since there aren't other like terms for 10^2 and 32 you leave them how they are

After you combine your like terms you write the terms in order to get 10r^2+36r+32

Hope this helped!

4 0
3 years ago
The given polygons are similar. Find the value of x.
ratelena [41]
X would have to equal 10. This would be the answer because the numbers have to be proportional. To do that all you have to do is do 12/8. Then you get 1.5. Then you do the same for 15. Do 15/1.5 and get 10.
3 0
3 years ago
5671 + 5671 in estimated answer​
Sati [7]

Answer:

2

Step-by-step explanation:

2

8 0
2 years ago
A paint manufacturer uses a machine to fill gallon cans with paint​ (1 galequals128 ​ounces). The manufacturer wants to estimate
kvasek [131]

Answer:

a) To determine the minimum sample size we need to use the formula shown in the picture 1.

E is the margin of error, which is the distance from the limits to the middle (the mean) of the confidence interval. This means that we have to divide the range of the interval by 2 to find this distance.

E = 0.5/2 = 0.25

Now we apply the formula

n = (1.645*0.80/0.25)^2 = 27.7 = 28

The minimum sample size would be 28.

b) To answer the question we are going to make a 90% confidence interval. The formula is:

(μ - E, μ + E)

μ is the mean which is 127. The formula for E is shown in the picture.

E = 0.80*1.645/√8 = 0.47

(126.5, 127.5)

This means that the true mean is going to be contained in this interval 90% of the time. This is why it doesn't seem possible that the population mean is exactly 128.

7 0
3 years ago
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