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Romashka-Z-Leto [24]
4 years ago
6

(4v-1)(5v-3) multiply and simplify

Mathematics
1 answer:
den301095 [7]4 years ago
3 0
This process can be a bit tricky:
(4v - 1)(5v - 3) ~ First, let's multiply 4v by 5v and -3.
20v^2 - 12v ~ Now take -1 from the top and multiply it by 5v and -3.
-5v + 3 ~ Now we add like terms.
20v^2 - 12v - 5v + 3 ~ Subtract -12v - 5v.
20v^2 - 7v + 3 ~ That is as simplified as you can get it.

Answer: 20v^2 - 7v + 3

I hope this helps, have a great rest of your day! ^ ^
{-Ghostgate-}
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93.64m to metres and centimetres
Wewaii [24]

Answer: 9,364cm

Step-by-step explanation: 1 meter = 100 centimeters so it’s 93.64(100) = 9,364

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2 years ago
How heavy a load (pounds) is needed to pull apart pieces of wood 4 inches long and 1.5 inches square? Here are data from student
statuscvo [17]

Answer:

a. (29526.192 , 32155.808)

b. (29673.9301 , 32008.0699)

Step-by-step explanation:

on calculation, we find that sample mean = 30843 and sample standard deviation = 3018.504, and n=20

1)

Sample Mean = 30841

SD = 3000

Sample Size (n) = 20

Standard Error (SE) = SD/root(n) = 670.8204

alpha (a) = 1 - 0.95 = 0.05

z critical value for 95% confidence interval:

z(a/2) = z(0.025) = 1.96

Margin of Error (ME) = z(a/2) x SE = 1314.808

95% confidence interval is given by:

Sample Mean +/- (Margin of Error) = 30841 +/- 1314.808

= (29526.192 , 32155.808)

2)when std dev of population is not known, we use sample's, but we have to use t instead of z

Sample Mean = 30841

SD = 3018.504

Sample Size (n) = 20

Standard Error (SE) = SD/root(n) = 674.958

alpha (a) = 1-0.9 = 0.1

we use t-distribution as population standard deviation is unknown

t(a/2, n-1 ) = 1.7291

Margin of Error (ME) = t(a/2,n-1)x SE = 1167.0699

90% confidence interval is given by:

Sample Mean +/- (Margin of Error)

30841 +/- 1167.0699 = (29673.9301 , 32008.0699)

4 0
3 years ago
Which ratio Best describes the relationship between the map distance in inches compared to the actual distance in miles?
Gnom [1K]

Answer:

A. 7:1

Step-by-step explanation:

14/2 is 7

35/5 is 7

and 56/8 is 7

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Plz someone help me with this problem for math
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The area of a square is 49cm square. A rectangle has the same perimeter as the square. If the length of the rectangle is 9.3cm w
seropon [69]

Answer:

4.7 cm

Step-by-step explanation:

\sqrt{49} = 7 so side length of the square is 7

7 x 4 = 28 so perimeter is 28cm

28 - 9.3 - 9.3 = 9.4

9.4 / 2 = 4.7 cm

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3 years ago
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