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2 years ago

What is value of x? Please help! Will reward

Mathematics

2 answers:

Phantasy [73]2 years ago

7 0

The answer that I got is x=50

vazorg [7]2 years ago

5 0

x = 50

The angles shown are vertically opposite and thus equal

so 3x - 30 = 2(x + 10)

3x - 30 = 2x +20

subtract 2x from both sides

3x - 2x - 30 = 20

x - 30 = 20

add 30 to both sides

x = 20 + 30 = 50

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Normal Distribution. Cherry trees in a certain orchard have heights that are normally distributed with mu = 112 inches and sigma

Lubov Fominskaja [6]

Answer:

The probability that a randomly chosen tree is greater than 140 inches is 0.0228.

Step-by-step explanation:

Given : Cherry trees in a certain orchard have heights that are normally distributed with $\mu = 112$ inches and $\sigma = 14$ inches.

To find : What is the probability that a randomly chosen tree is greater than 140 inches?

Solution :

Mean - $\mu = 112$ inches

Standard deviation - $\sigma = 14$ inches

The z-score formula is given by, $Z=\frac{x-\mu}{\sigma}$

Now,

$P(X>140)=P(\frac{x-\mu}{\sigma}>\frac{140-\mu}{\sigma})$

$P(X>140)=P(Z>\frac{140-112}{14})$

$P(X>140)=P(Z>\frac{28}{14})$

$P(X>140)=P(Z>2)$

$P(X>140)=1-P(Z$

The Z-score value we get is from the Z-table,

$P(X>140)=1-0.9772$

$P(X>140)=0.0228$

Therefore, the probability that a randomly chosen tree is greater than 140 inches is 0.0228.

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3 years ago

What is the lowest common denominator of 4,5,6,7,8 and 9?

Readme [11.4K]

Answer:

least common is 1!

Step-by-step explanation:

plz mark me brainliest

5 0

3 years ago

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What is [(a+b)³]² simplified? A. (a +b) 3/2 B. (a+b)^5 C. (a+b)^1 D. (a+b)^6

Tresset [83]

Answer:

D. (a+b)⁶ is the right answer.

Step-by-step explanation:

[(a+b)³]²=(a+b)³*²=(a+b)⁶

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2 years ago

A print shop prints 356 copies of a booklet. The booklet has 38 pages. How many pages were printed?

FrozenT [24]

Answer:

13528 pages

Step-by-step explanation:

356 x 38= 13528

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2 years ago

Chocolate bars come in packs of 8 and graham crackers come in packs of 12. What is the smallest number of chocolate bars and g

Solnce55 [7]

Answer:

3 chocolate bars, and 2 graham crackers

Someone forgot the marshmallows...... :P

Step-by-step explanation:

Chocolate bars = 8 pack

Graham Crackers = 12pack

To have no crackers or chocolate left over, we need to find LCM

Factors of 8:

8, 16, 24, 32, 40, 48, 56, 72....

Factors of 12:

12, 24, 36, 48, 60, 72

The smallest LCM is 24

Chocolate bars:

24/8 = 3

Graham Crackers:

24/12 = 2

If my answer is incorrect, pls correct me!

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-Chetan K

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2 years ago

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