Sara threw her math book off a building . The height of the book, seconds after being thrownis modeled by the equation below. The height measured in feet. h(x)=-5(x+2)(x-7) what is the height of the book when it is thrown?

Answer: 192.. just took the test :)

Step-by-step explanation:

The number of  boxes contains more than 340 nails will be 190. Option B is correct.

The number of standard deviations by which the value of a raw score is above or below the mean value of what is being observed or measured is known as the Z score.

Z score for the 340 nails is found as;

[tex]\rm Z-score= \frac{340-325}{15} \\\\ Z-score=1[/tex]

If the probability of the z score is grater than 1 is;

P(Z≥1)=1-P(Z≤1)

P(Z≥1)=1-0.8413

P(Z≥1)=0.1587

For the 1200 boxes with more than the 340 nails is 192.

Hence,option B is correct.

Learn more about z-score refer:

https://brainly.com/question/21262765

#SPJ2

Answer:

D

Step-by-step explanation:

Scatter plot (Use excel with any bivariate data you can find)

Answer:

b⁹

Step-by-step explanation:

When multiplying terms with exponents, you simply add the exponents.

5 + 4 = 9

Answer:

1.8×120.50, and u shd get the ans

Answer:

ratio

Step-by-step explanation:

Answer:

very nice

Step-by-step explanation:

Answer:

I think its b

do you have to times it?

Answer:

(3+7)2+(-6+6)2

100+0

100

10

Answer:

TIK TOK

Step-by-step explanation:

ON THE CLOCK  

Answer:

x= -6h

Step-by-step explanation:

opening up the bracket

10x+20h=12x+32h

10x-12x=32h-20h

-2x=12h

x=-6h

Answer:

x=-6h

Step-by-step explanation:

Isolate the variable by diviiding each side by factors that don't contain the variable. Hopefully this is helpful :)

Answer:

56.137 Square Unit

Step-by-step explanation:

Rectangle: 7x6=42

1/2 Circle: 1/2x3x3x[tex]\pi[/tex]=14.137

42+14.137=56.137

Answer: [tex]\$90[/tex]

Step-by-step explanation:

Given

The price of the ticket prior to match day is [tex]\$30[/tex]

It is stated that there is [tex]200\%[/tex] the markup on match day i.e.

The selling price of the ticket is

[tex]\Rightarrow S.P.=30+30\times 200\%\\\Rightarrow S.P.=30+30\times 2=30+60\\\Rightarrow S.P.=\$90[/tex]

So, han must expect to pay [tex]\$90[/tex]  on that day

Answer:

No Possible Triangles

Step-by-step explanation:

Deltamath

Answer:

Triangular prism with base being an equilateral triangle with side of 9.

Area of equilateral triangle with side a:

Volume:

Surface area:

Answer:

mode

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

x = 34.5

Step-by-step explanation:

x - 15.4 = 19.1

Add 15.4 to both sides.

x - 15.4 + 15.4 = 19.1 + 15.4

x = 34.5

Answer:

x equals -3

Hope this helps :)

Step-by-step explanation:

Answer:

The width is 32 inches

Step-by-step explanation:

Answer:

x<20

Step-by-step explanation:

add 4 to the other side to isolate x by adding 4 to 20 to be left with x<20

Answer: undefined

Step-by-step explanation:

I think im not sure tho

Answer:

45°

Step-by-step explanation:

here's your solution

=> we know that sum of both angle is equal

180°

=> because both angle are co-interior angle

=> let the unknown angle be x

=> so, X + 135° = 180°

=> x= 180 - 135

=> 45°

hope it helps

Answer:

281 feet

Step-by-step explanation:

Answer:

80m2 wtfffffffffffffffffffff

Answer:

b. normally distributed with a mean of $1200 and a standard deviation of $40.

Step-by-step explanation:

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.

Population:

Skewed to the right, mean 1200, standard deviation [tex]\sigma = 400[/tex]

Sample of 100 days:

By the Central Limit Theorem:

Approximately normal

Mean 1200

Standard deviation [tex]s = \frac{400}{\sqrt{100}} = 40[/tex]

The correct answer is given by option b.

The moment generating function of each random variable is;

M(t) = (1/(1 - 1.5t))^(2), t < 2/3

Answer:

SD[X + Y] = 3

Step-by-step explanation:

For ease of differentiation, let's rewrite the M(t) function as;

M(t) = (1 - (3/2)t)^(-2)

Let's find the first derivative of the function;

M'(t) = 3(1 - (3/2)t)^(-3)

To get E[X], we will put 0 for t to get;

E[X] = 3(1 - (3/2)0)^(-3)

E[X] = 3

Now,let's find the second derivative of M(t)

M"(t) = (27/2)(1 - (3/2)t)^(-4)

At,t = 0, we will get E[X²]

Thus;

E[X²] = 27/2

Now, Var[X] = E[X²] - (E[X])²

Var[X] = (27/2) - 3²

Var[X] = 9/2

We are told that the times X and Y are independently and identically distributed. Thus, the sum of their variances is equal to the variance of their sum. This is expressed as;

Var[X + Y] = 9/2 + 9/2

Var[X + Y] = 9

Now,we know that square root of variance is standard deviation. Thus;

SD[X + Y] = √9

SD[X + Y] = 3

Answer:

4

Step-by-step explanation:

set up an equation:

let h be the number of hours you spent raking.

then, the cost would be 10 + 8 times the number of hours.

In equation form:

[tex]10 + 8h = 42[/tex]

solve:

[tex]10 + 8h = 42\\8h = 32\\h = 4[/tex]

So you worked for 4 hours

Answer:

the answer is to commit uninstall

Step-by-step explanation:

gg wp

Answer:

CA = 13.5

Step-by-step explanation:

tan 64 = CA/6.6

2.05 = CA/6.6

CA = 13.5

Answer:

The list already says the diameter. Here's the answers for the other stuff though:

A≈201.06

A≈4417.86