For the 1,000-meter running event, Abby's mean time is 4.5 minutes with a standard deviation of 0.75 minutes. For the 800-meter event, Abby's mean time is 3.2 minutes with a standard deviation of 0.4 minutes. In the last track meet, Abby ran the 1,000-meter race in 4.1 minutes and the 800-meter race in 3 minutes. In which event did Abby have a better performance?

Answer:

yes

Step-by-step explanation:

5(3x+4)

5*3=15

5*4=20

15x+20

Answer:

Child = $ 10.00

Adult = $ 14.00

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The domain of this function is [tex][-4,2][/tex], as it is shown in the graph that [tex]x[/tex] is only within this interval. The range of this function is [tex][-4,4][/tex], as the smallest value of [tex]y[/tex] is -4 and the largest value of [tex]y[/tex] is 4, and [tex]y[/tex] takes every possible values between them.

Answer: 10 is your answer

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

Just keep looking at the faces.

Hopefully im correct, this is my 1st one :)

Answer:

X can be anything.

Step-by-step explanation:

Because both sides of the equation are the same term the solution for

x is the set of of numbers.

Answer:

5x³ + 6x² + 0x - 8  <== answer

Step-by-step explanation:

There is no picture, but i did that homework before.

Answer:

ok....................

Step-by-step explanation:

Answer:

32x+12y

Step-by-step explanation:

trust me

Answer:

32x+12y

Step-by-step explanation:

4*8x = 32x

4*3y= 12y

Answer:

16 1/2 gallons of water.

Step-by-step explanation:

Since 4 bottles can hold 8 gallons, and you need to know how much 10 can hold, you can multiply 4 and 8 times 2 so you get 8 and 16, and then if you choose 10 instead of 8 instead you would get the result of 10 bottles being able to hold 16 1/2 gallons of water.

I hope this helps you :D

Answer: 1

Step-by-step explanation:

2+3 = 5

10 - 5 = 5

The x’s would be just 1 to make them equal since they don’t need to be multiplied

Answer:

£61.78

Step-by-step explanation:

27/500= 0.054

0.054x 1144 = 61.776

Answer:

C.  - ([tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex])

Step-by-step explanation:

-3 ^-4 = -1/3 ^4

This equal - ([tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex])

Answer:

$10.27

Step-by-step explanation:

H + F = $8, (7% of 8 is 0.56) [$8.56] + 20% = 10.272 --> $10.27

Step-by-step explanation:

8) all real numbers.

10)

[tex]y = a {b}^{x} \\ 12 \div 4 = 3 \\ b = 3 \\ a = 4 \\ y = 4 \times {3}^{x} [/tex]

Answer:

78 is the correct answer hope it helps

Answer:

We found the factors and prime factorization of 7 and 14. The biggest common factor number is the GCF number. So the greatest common factor 7 and 14 is 7.

Step-by-step explanation:

The value of the Expression 7+ 14  using the GCF is 21.

The largest factor that splits both numbers is said to be the greatest common factor. List the prime factors of each integer before calculating the greatest common factor. One 2 and one 3 are shared by those aged 18 and 24. The GCF of 18 and 24 is 2 * 3 = 6, which we multiply to obtain.

Given:

We have to add 7  + 14

Factorise the terms separately

7 = 7 x 1

14 = 7 x 2

So, the Greatest Common Factor is 7.

Thus, 7+ 14 = 7(1+ 2) = 7 x 3= 21

Learn more about Greatest Common Factor here:

https://brainly.com/question/11221202

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Answer:

1/3

Step-by-step explanation:

Answer: 6(u-2)+2=6u-10

Step-by-step explanation:

Then, any value of u makes the equation true.

The other side of this equation 6 (u-2) + 2 is 6u - 10 and is true for all values of u.

An assertion that two mathematical expressions have equal values is known as an equation. An equation simply states that two things are equal. The equal to sign, or "=," is used to indicate it.

Given:

6 (u-2) + 2

Simplify the above expression as shown below,

6 × u - 6 × 2 + 2  (Use distributive property)

6u - 12 + 2    (Add constant terms)

6u - 10

Thus, 6 (u-2) + 2  = 6u - 10

To know more about equation:

https://brainly.com/question/12788590

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Answer:

2 3/4+(2 3/4 / 2)=t

Step-by-step explanation:

IM sure this is right

Answer:

c (6)

Step-by-step explanation:

by the corresponding angles postulate, the angle above 20x-5 will be 65°.

20x - 5 + 65 = 180 they are supplementary angles (angles that add up to 180°)

20x + 60 = 180

20x = 120

x = 6

Answer: 5

Step-by-step explanation:

Answer:

-24xy+2yz

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

Answer:

[tex]\frac{17}{27}[/tex]

Step-by-step explanation:

Given: Events A and B are such that [tex]P(A)=38\,,\,P(B)=27[/tex] and P(A∩B) = 17

To find: [tex]P(A|B)[/tex]

Solution:

Probability refers to the chances of occurrence of any event.

An event is described as an outcome of a random experiment.

A random experiment is an experiment for which outcomes cannot be predicted.

[tex]P(A|B)=[/tex] P(A∩B) ÷ P(B) = [tex]\frac{17}{27}[/tex]

Answer:

No, they don't.

Step-by-step explanation:

I'm going to divide 18 by 9 and 30 by 20. If the quotients are the same, then we do have a proportion.

18 ÷ 9 = 2

30 ÷ 20 = 1.5

The quotients aren't the same. Same thing if you convert the fractions to decimals:

9 ÷ 20 = 0.45

18 ÷ 30 = 0.6

This means the two values do NOT form a proportion.

Hope this helps! Have a great day!

Answer:

No.

Step-by-step explanation:

9/20=18/30

9*30=20*18

120=360

If you would like to know how this works please do not hesitate to ask.

Answer:

it is 7

Step-by-step explanation:

Step-by-step explanation:

https://photomath.net/s/D904j6

here is your answer mate

Answer:

3

Step-by-step explanation:

Answer:

Step-by-step explanation:

3

Answer:

A, D, and E

Step-by-step explanation:

because they are negative

x=5th test score

(88+85+100+86+x)/5=90

(359+x)/5=90

71.8+x/5=90

-71.8              -71.8

x/5=18.2

*5       *5

x=91

the fith test score has to be 91 in order for the average to be 90