The lifespan of all microwave ovens sold in the United States has a mean of 9 years and a standard deviation of 2.5 years. If a particular microwave oven has z-score of -1.5, how many years did it last?
a.) 5.25 years
b.) 7.5

Answers

Answer 1

Answer:

7.5 years because United States has mor thne 9 years


Related Questions

Olivia's science class is making slime from cornstarch and glue. Olivia is helping pass out
materials. She gives each student 4 ounces of cornstarch from a 5-pound bucket. If Olivia's
class has a total of 18 students, how many ounces of cornstarch will she have left?

Answers

Answer:she will have 4.44 ounces of cornstarch left

Step-by-step explanation: 1 pound=16 ounces 16*5=80 ounces 80 ounces equal 5 pounds then you divide 80 by 18 and your answer should come out as 4.44 ounces

Amount of cornstarch left is 8 ounce

Given that;

Each student get = 4 ounce of cornstarch

Total number of student = 18 students

Total amount of cornstarch = 5 pound

Find:

Amount of cornstarch left

Computation:

Amount of total cornstarch to student = Each student get × Total number of student

Amount of total cornstarch to student = 4 × 18

Amount of total cornstarch to student = 72 ounce

1 pound = 16 ounces

So,

Total amount of cornstarch = 5 × 16

Total amount of cornstarch = 80 ounces

Amount of cornstarch left = 80 - 72

Amount of cornstarch left = 8 ounce

learn more:

https://brainly.com/question/16266309?referrer=searchResults

the expression 3x-9 and 23-5x represent the lengths (in feet) of two sides of an equailater triangle. find the perimeter of the triangle

Answers

Answer: 3ft

Step-by-step explanation:

Step 1; 3x-9=23 5x

Step 2; 3x9=23 5x 3x+ 9=23- 5x

Step 3 ; 3x-9 3x4-9 = 3ft

3ft is the answer.

PLEASE HELP
Find the Value of X in the given right triangle

Answers

Answer:

I think answer is 149 by using Pythagoras theorem

Step-by-step explanation:

sinx= p/h

= 7/10

sinx= 0.7

maybe

A train is traveling at a velocity of 75 km/hr it takes a train 5 hours to get to its destination how far did the train travel to get to its destination

Answers

Answer:

On his day off, Lee took a trip to the zoo. He drove an average speed of 65 mph, and it took him two-and-a-half hours to get from his house to the zoo.

Step-by-step explanation:

How many of the positive divisors of 2160 are multiples of 3?

Answers

Answer:

The positive divisors of 2160 are:

1,  2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160

Multiples of 3 are:

3, 6, 9, 12, 15, 18, 24, 27, 30, 36, 45, 48, 54, 60, 72, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160

The number of divisors, multiples of 3 is:

30

Please help with 27 28 29 and 30 this is due in the morning

Answers

Answer:

Step-by-step explanation:

27. LMN = LMO- NMO = 85-53 = 32

Megha bought a cycle for Rs 4000 and sold it to Mahima at a loss of 10%. If Mahima sold th cycle to Madhab at a loss of 5%, find the cost price of Madhab.
pls step by step​

Answers

Answer:

i hope it helped U ❤️❤️❤️

I will give you 20 points IF THE ANSWER IS CORRECT
angle 3 and angle 4 are supplementary. m<3=7x-3 and m<4=2x+12. Find the measure of each angle

Answers

Step-by-step explanation:

Sum of supplementary angle = 180⁰

2x + 12 + 7x - 3 = 180

9x + 9 = 180

9x = 180 - 7

9x = 171

x = 171/9

x = 19

m<3 = 7(19) - 3 = 133 - 3 = 130⁰

m<4 = 2(19) + 12 = 50⁰

At the city museum, child admission is $5.10 and adult admission is $9.60. On Monday, twice as many adult tickets as child tickets were sold, for a total sales of $558.90. How many child tickets were sold that day?

Answers

Answer:

23

Step-by-step explanation:

The amount of children's tickets is x, while the amount of adults' tickets is 2x

5.1*x- the amount of money from children

9.6*2x= 19.2x- the amount of money from adults

5.1x+19.2x= 558.9

x=23 - child tickets

sjddkdkkdkdkdkdkdkdkkddkjsjssj

Answers

Answer:

PLESS WRITE A CORRECT QUESTION THAS I CAN HELP YOU

HELPPP!!!
What is the value of f(4)

Answers

Answer:

f(4) = 0

Step-by-step explanation:

If the value of x is between 0 and 5, then the f(x) will equal 0.

x = 4 is greater than 0 and less than 5, so f(4) = 0

A group of 123 students went on a field trip to
collect seashells. If the students collected 15 shells
each, how many shells did they collect?

Answers

Answer:

8.2

Step-by-step explanation:

If each student in the group collected 15 shells, we know that there are 123 students on the field trip, so we can take 123 and divide it by 15 to get 8.2 or 41/5.

Which of these could be the graph of F(x) = In x + 1?

Answers

Answer:

A

Step-by-step explanation:

rlykydlydlysl6sl6sl6dylsl6sl6dlu

Tom purchased a basketball game for $9.09, and a Pokemon game for $13.96
with two $20 bills. How much change did Tom get?

Answers

Hello :D

2 x $20 = $40

$9.09 + $13.96 = $23.05

$40.00 - $23.05 = $16.95

The answer is $16.95. I hope this helps :)

Answer:

:troll:

Step-by-step explanation:

Determine the y-intercept of the straight line - 3y = -3x + 15

Answers

Answer:

-5

Step-by-step explanation:

-3y=-3x+15

y=x-5

make x=0

y=0-5

y=-5

show that a^12 can be written as a perfect square and a perfect cube

Answers

Answer:

Step-by-step explanation:

Doing this the long way, write a^12 as a product of "a"s

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

Now group them into groups of 4

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

There are 3 groups of 4 so you can write it as [(a^4)]^3 which is a cube

Now do the same thing with groups of 6s

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

a^12 = (a^6)^2

So the two answers are

Perfect cube:  [(a^4)]^3

Perfect square: (a^6)^2

Dwayne makes 10 1/2 hours of long distance calls in a month. How much is his bill for that month


Answers

Answer:

just for points museum Kristen

c^9 / 6c^4

please help and explain, thanks so much.

Answers

Answer:

2.63340641 × 10109 m13 / s13

q(q-q)-(p+q) ; use p=1 and q=3

Answers

If this is written correctly then the answer is straight up -4

What are the ways you can prove triangles are congruent?

Answers

Answer:

There are five ways to find if two triangles are congruent: SSS, SAS, ASA, AAS and HL.

.
.
.
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this is my brothers math homework can someone help w the what is the meaning question

Answers

How many piles the plates are stacked in I think

The answer is [tex]24/4=6 \hspace{0.1cm} and \hspace{0.1cm}4*6=24[/tex]. "unknown factor" pertains to finding an unknown value in a multiplication problem, while "quotients" refer to the results obtained in division operations.

Both concepts are fundamental in arithmetic and algebraic calculations.

In mathematics, "unknown factor" and "quotients" are related to multiplication and division, respectively:

1. **Unknown Factor:**

  - An "unknown factor" refers to a number or variable that you want to find or determine in a multiplication problem.

  - In the context of an equation like "a * b = c," where "a" and "b" are known values or variables, and "c" is the result of the multiplication, you might be trying to find the value of "a" or "b." The unknown factor is the value that you don't initially know, and you need to solve for it.

  - For example, if you have the equation "3 * x = 15," the unknown factor is "x," and to find its value, you would need to divide both sides of the equation by 3, yielding "x = 5."

2. **Quotients:**

  - "Quotients" is the plural form of "quotient," and it refers to the result of a division operation.

  - In division, the quotient is the number that you get when you divide one number (the dividend) by another number (the divisor).

  - For example, in the division problem "12 ÷ 4," the quotient is 3 because 12 divided by 4 equals 3. Here, 3 is the result or quotient of the division operation.

  - Quotients can be whole numbers, fractions, or decimals, depending on the numbers being divided and the division process.

to know more about quotients:

https://brainly.com/question/1939154

#SPJ3

Which of these numbers are divisible by 2? a 45. b 70. c 497. d 2380. e 6678. f 12443.​

Answers

Answer:

b, d and e

Step-by-step explanation:

Only even numbers are divisible by 2

The only even numbers in the list are

b 70

d 2380

e 6678

B,D,E because 2 is even number right? So everything even no (at the end of the no.) is can divisible by 2.

Hope this will helps u:))

PLEASE HELP WILL MARK BRAINLIEST
Paul graphs the equation y = 24.
Where does his graph intersect the y-axis?
(0,1)
(1,0)
(0,0)
(2,0)

Answers

(0,0)

Step-by-step I took the test

sean used 41 feet of string to fly his kite. his kite was 9 feet in front of him. how high was his kite?

Answers

Answer:

40 feet

Step-by-step explanation:

What is it simplified?

Answers

Answer:

v² - 4

Step-by-step explanation:

To simplify usually means to reduce something.

So like in this problem all we have to do is reduce...

v^2 - 2^2

v² - 4

Hope this helps :)

160 divided by 25??? I need help what is the anwser?

Answers

Answer:

6.4

Step-by-step explanation:

160 / 25 = 6.4

Answer: 6.4

Step-by-step explanation: 6.4 x 25 = 160 Brainliest please?

Write the equation of the line described

Answers

Step-by-step explanation:

slope = x factor = - 5/2

Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

New slope = 2/5 = m

y = mx + b

from the point given y = 2 | x = -4

2 = (2/5 × -4 ) + b

2 = - 1.6 + b

b = 3.6

line equation

[tex]y = \frac{2}{5} x + 3.6[/tex]

After a dilating a square with a scale factor of 3, which describes the image of the square?
O Its sides are 1/3 as long as those of the original square.
O its sides are 3 times as long as those of the original square.
O Its sides are 3 units longer than those of the original square.
O Its sides are 3 units shorter than those of the original square.

Answers

Answer:

2. It's sides are 3 times as long as those of the origanal square.

Step-by-step explanation:

The scale factor is 3. So the scale of the sides of the orig. square to the image is 1:3. So, it is 3 times as large as the preimage.

Which graph represents a step function?

Answers

The answer is B - the second option

Explanation:

Step functions are functions (meaning that the x-values do not match with a y-value more than once) that increase or decrease at the same time. #1 is another type of piecewise function, while #3 is a choice to fool you.

Answer:

B

Step-by-step explanation:

got it right on edge :)

yoyo yknow what time it is answer this please and thanks no images for answers those blocked ty! <33

Answers

Answer:

7

Step-by-step explanation:

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