Please help!!!! :D 51 points of right! :3! :>

Answer:

17

Step-by-step explanation:

Answer:

See below

Step-by-step explanation:

Given relationship:

a) r = 3, d = 4

b) d = 4 miles, rate = r

c) d = 4 miles, time = t

d) t = 3 h, rate = r

Answer:

x = √2

Step-by-step explanation:

Since this is a 30° 60° 90°, the hypotenuse is 2 times greater than the small leg. We can use this information to make an equation and solve for x.

2x = √8

x = √2

Therefore, x = √2.

Answer:

its A exactly one soulution

Step-by-step explanation:

Answer:

b is the right answer

Step-by-step explanation:

Answer:

The answer would be 2

Step-by-step explanation:

Answer:

15, inches, 7, inches

Step-by-step explanation:

44=2(8+l)+2l

44=16+4l

28=4l

7=l

l=7

w=8+7

w=15

Answer:

37.7 ft

Step-by-step explanation:

c=πd (circumference= 3.14*diameter)

c=3.14*12

c=37.68 ft

rounded to tenths place-37.7 ft

Answer:

C

Step-by-step explanation:

i think its c because 4 times -7 is negative 28, which means that the other answers are wrong. please give me brainliest!!<3

Answer:

y=½x+0

Step-by-step explanation:

∆y/∆x

=1-½/2-1=½

the first part of the rule is ½x

Plug in x=3

½×3=3/2

when x=5

½×5=4/2

Therefore the rule is y=½x+0

Answer:

c. 25

Step-by-step explanation:

100/12 = 8.3

8.3 × 3 = 24.9

rounded up is 25

Answer: 125 yards?

Step-by-step explanation:

Answer:

125 yards

Step-by-step explanation:

triangles are similar so let's see the ratio

112/140= 4/5

100÷ 4/5 =125 yards

Answer:

22

Step-by-step explanation:

because it just is

Answer:

The correct answer is,

[tex] - \frac{7v {14}^{} }{2} [/tex]

Answer:

the answer is b 7/2v^2

i got it right on ed

Answer:

its easy the anser is x=40

Step-by-step explanation:

you just add the numbers

Answer:

|-10|=10

Step-by-step explanation:

Absolute value is 10

Answer:

$4

Step-by-step explanation:

40/10 = 4

Answer:

86.65% probability that the mean monitor life would be greater than 74.4 months in a sample of 85 monitors

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question:

Population: [tex]\mu = 75, \sigma = 5[/tex]

Sample of 85: [tex]n = 85, s = \frac{5}{\sqrt{85}} = 0.5423[/tex]

If the claim is true, what is the probability that the mean monitor life would be greater than 74.4 months in a sample of 85 monitors

This is 1 subtracted by the pvalue of Z when X = 74.4. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{74.4 - 75}{0.5423}[/tex]

[tex]Z = -1.11[/tex]

[tex]Z = -1.11[/tex] has a pvalue of 0.1335

1 - 0.1335 = 0.8665

86.65% probability that the mean monitor life would be greater than 74.4 months in a sample of 85 monitors

Answer:

672

Step-by-step explanation:

(1/2×16×12)×2 + (10×12) + (10×16) + (20×10)

The total surface area of the figure is S = 672 cm²

The surface area of the prism is calculated as

The formula for the surface area of a prism is SA=2B+ph, where B, is the area of the base, p represents the perimeter of the base, and h stands for the height of the prism

Surface Area of the prism = 2B + ph

The area of the triangular prism is A = ph + ( 1/2 ) bh

Given data ,

Let the area of the 2 triangles be T

Let the area of the 2 rectangles be R

Let the area of the third side be U

Now , the total surface area of the prism = T + R + U

where T = 2 x ( 1/2 ) ( 16 x 12 )

T = 192 cm²

R = ( 16 x 10 ) + ( 12 x 10 )

R = 280 cm²

And , U = 20 x 10

U = 200 cm²

Therefore , the total surface area of prism S = 192 cm² + 280 cm² + 200 cm²

S = 672 cm²

Hence , the surface area of prism is S = 672 cm²

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Answer:

282.3

Step-by-step explanation:

Answer:

282.3

Step-by-step explanation:

Answer:

a=8,4

Step-by-step explanation:

just solved it

There are a few ways to find out the correct answer. One of them is to divide 2.40 by 6 to get a price of one cake and then multiply it by 10:

2.40 ÷ 6 = 0.40

0.40 * 10 = 4.00

Ten cakes would cost 4 pounds.

Answer:

divide 2.40 by 6 to get a price of one cake and then multiply it by 10:

2.40 ÷ 6 = 0.40

0.40 * 10 = 4.00

Step-by-step explanation:

Answer:

C) (y - 1)(y - 5)

Step-by-step explanation:

Hi there!

First you separate your expression into groups.

[tex](y^2-5y)(-1y+5)[/tex]

Now we take the common multiple out of each.

[tex]y(y - 5)-1(y - 5)[/tex]

Since we have two (y - 5)s, we can pull it out of the equation as its own common multiple.

After we do that, we are left with y - 1. (we got this from taking the common multiples out)

Now we are just left with (y - 5)(y - 1)

Hope this helped!

Answer:

-10

Step-by-step explanation:

Answer:

 309

Step-by-step explanation:

-42 x -7 = 294 + 15 = 309

The total cost of admission for 6 adults and 6 children to the museum is $71.4.

Total cost refers to the sum of all costs incurred in producing a product, delivering a service, or achieving a particular outcome. It encompasses all the expenses, both direct and indirect, that are associated with a specific activity, project, or process.

According to the given information:

To calculate the total cost of admission for 6 adults and 6 children to the museum, we can substitute the values of "a" and "c" into the given expression "7.1a + 4.8c" and perform the calculations.

Given:

Number of adults (a) = 6

Number of children (c) = 6

Admission cost per adult = $7.10

Admission cost per child = $4.80

Substituting the values into the expression:

7.1a + 4.8c = 7.1 * 6 + 4.8 * 6

Now, we can perform the calculations:

7.1 * 6 = 42.6

4.8 * 6 = 28.8

Adding the results together:

42.6 + 28.8 = 71.4

So, the total cost of admission for 6 adults and 6 children to the museum is $71.4.

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A.AAA know this becouse i took the test

Answer:

The range is between 27.9 minutes and 35.5 minutes.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 31.7 minutes

Standard deviation = 1.9 minutes.

Within what range would you expect 95% of your customers to stay in your store

Within 2 standard deviations of the mean.

Lower bound: 31.7 - 2*1.9 = 27.9 minutes

Upper bound: 31.7 + 2*1.9 = 35.5 minutes

The range is between 27.9 minutes and 35.5 minutes.

Answer:

His final score was -11 points

Step-by-step explanation:

27 - 53 = -26

-26 + 15 = -11