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3 years ago

PLZ HELP WILL GIVE BRAINLIEST...

Mathematics

2 answers:

NeTakaya3 years ago

7 0

Answer to the question:

a. -11

b. 77

kondor19780726 [428]3 years ago

4 0

A) -11 degrees
B) 77 degrees colder

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Simplify the expression below.<br> x4 • x4 • x4

beks73 [17]

Answer:

x^12.

Step-by-step explanation:

x^4 times x^4 times x^4.

Since we don't know x and the 4's are exponents we just add them together.

5 0

3 years ago

PLEASE HELP!!!!!

zhuklara [117]

Answer: The probability of picking 7 and then picking a number greater than 7 is $\frac{1}{3}$ or 0.3

Step-by-step explanation: Probability

Probability shows us the chances of an event occurring.

Now, given that we have already picked three cards. therefore, 7, 8, and 9.

The number of possible outcomes is 3.

the probability of card 7,

Now, as card seven is already picked up cards 8 and 9 are the only card left.

therefore, the sample size(possible outcomes) was reduced to 2 only.

Also, cards 8 and 9 both are greater than 7, thus the desired outcome is also 2.

Further the probability of the number greater than 7 occurring,

Probability picking a number greater than 7

The probability of picking a 7 and then picking a number greater than 7

= Probability of card 7 occurring x probability of card 8 and 9 occurring.

You're welcome. Pls give me brainiest

4 0

2 years ago

g Z-Test for Population Means Calculate z-statistic of a population mean. Keith sampled 10 private universities in Colorado and

scoray [572]

Answer: 2.46

Step-by-step explanation:

Formula for x-score is given by :-

$Z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

, where $\overline{x}$ = Sample mean , $\mu$ = population mean, $\sigma$ = population standard deviation, n= sample size.

As per given , n=10

$\mu$ = $29,056

$\sigma$ = $3,339

$\overline{x}$ = $31,650

Then,

$z=\dfrac{ 31650-29056}{\dfrac{3339}{\sqrt{10}}}\\\\=\dfrac{2594}{\dfrac{3339}{3.16227766017}}\\\\=\dfrac{2594}{1055.88451073}=2.45670807142\approx 2.46$

Hence, the z-score = 2.46

4 0

3 years ago

Plssssssss helpppppp

Svetlanka [38]

Answer:

Step-by-step explanation:

The sum of the three angles of any triangle is equal to 180 degrees.

180-58=122

122/2=61

We divide by two because we are missing the other two angles but they are both equal.

3 0

3 years ago

Mr. Dodd fill the gas tank on his lawnmower with 3.8 gallons of gas he mowed his yard 10 times on the same tank of gas he use th

iren [92.7K]

Answer:he used 0.38 gallons if gas for each time.

Step-by-step explanation:

The total number of gallons of gas that Mr Dodd used to fill the gas tank on his lawnmower is 3.8

He mowed his yard 10 times on the same tank of gas.

If he used the same amount of gas each time, it means that the amount of gas that he used for each of the time would be

3.8/10 = 0.38 gallons of gas

4 0

3 years ago