what is 95% of 800?​

Answer:

Y=1/4x+33/4

Step-by-step explanation:

Y=1/4x+b

9=1/4(3)+b

9=3/4+b

8.25=33/4=b

Y=1/4x+33/4

Answer:

there is no expression

Step-by-step explanation:

Answer:2440

Step-by-step explanation:

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:

[tex]f(x) = (x + 19)(x^2 + 1)[/tex]

Step-by-step explanation:

Complex numbers:

The following relation is important for complex numbers:

[tex]i^2 = -1[/tex]

Zeros of a function:

Given a polynomial f(x), this polynomial has roots [tex]x_{1}, x_{2}, x_{n}[/tex] such that it can be written as: [tex]a(x - x_{1})*(x - x_{2})*...*(x-x_n)[/tex], in which a is the leading coefficient.

Has zeros −19 and −i

If -i is a zero, its conjugate i is also a zero. So

[tex]f(x) = a(x - (-19))(x - (-i))(x - i) = a(x+19)(x+i)(x-i) = a(x+19)(x^2 - i^2) = a(x + 19)(x^2 + 1)[/tex]

Output of 40 when x=1

This means that when [tex]x = 1, f(x) = 40[/tex]. We use this to find the leading coefficient a. So

[tex]f(x) = a(x + 19)(x^2 + 1)[/tex]

[tex]40 = a(20)(2)[/tex]

[tex]40a = 40[/tex]

[tex]a = 1[/tex]

The polynomial is:

[tex]f(x) = (x + 19)(x^2 + 1)[/tex]

Answer:

ratio

Step-by-step explanation:

A

Step-by-step explanation:

just listen to me because i know your doing benchmark just like me

Answer:

No, the survey doesn't support the researchers claim that people tend to underestimate the duration of a cold. .

Step-by-step explanation:

We are given;

Population mean; μ = 15

Sample mean; x¯ = 14

Standard deviation; s = 0.5

Sample size; n = 352

Null hypothesis; H0: μ = 15

Alternative hypothesis; Ha: μ < 15

Let's find the z-value;

z = (x¯ - μ)/(s/√n)

z = (14 - 15)/(0.5/√352)

z = -1/0.02665

z = -37.5

From online p-value from z-score calculator attached using z = -37.5; significance level of 0.05; one tailed hypothesis, we have;

p-value = 0.00001

But since we want to find out if they underestimate the duration of the cold then;

P(z > 0.00001) = 1 - 0.00001 = 0.99999

Which is approximately 1.

The p-value is greater than the significance level, therefore we fail to reject the null hypothesis and conclude that the survey doesn't support the researchers claim that people tend to underestimate the duration of a cold.

5.7+3.2=8.9

10^8+10^6=10^14

(8.9+10^14)

---

hope it helps

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:

0.6856

Step-by-step explanation:

[tex]\text{The missing part of the question states that we should Note: that N(108,20) model to } \\ \\ \text{ } \text{approximate the distribution of weekly complaints).]}[/tex]

Now; assuming X = no of complaints received in a week

Required:

To find P(77 < X < 120)

Using a Gaussian Normal Distribution ([tex]\mu =[/tex]108, [tex]\sigma[/tex] = 20)

Using Z scores:

[tex]Z = \dfrac{77-108}{20} \\\\ Z = -\dfrac{35}{20} \\ \\ Z -1.75[/tex]

As a result  X = 77 for N(108,20) is approximately equal to  to Z = -1.75 for N(0,1)

SO;

[tex]Z = \dfrac{120-108}{20} \\ \\ Z = \dfrac{12}{20}\\ \\ Z = 0.6[/tex]

Here; X = 77 for a N(108,20) is same to Z = 0.6 for N(0,1)

Now, to determine:

P(-1.75 < Z < 0.6) = P(Z < 0.6) - P( Z < - 1.75)

From the standard normal Z-table:

P(-1.75 < Z < 0.6) = 0.7257 - 0.0401

P(-1.75 < Z < 0.6) = 0.6856

Answer:

The width is 32 inches

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

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

Answer:

things and quality

Step-by-step explanation:

things and quality

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:

281 feet

Step-by-step explanation:

Answer:

No Possible Triangles

Step-by-step explanation:

Deltamath

Answer:

31.4

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:

Missing part of the question

Some parts of California are particularly earthquake-prone. Suppose that in one metropolitan area, 25% of all homeowners.....................

Answer:

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

[tex]Mean = 1[/tex]

[tex]Pr = 0.2617[/tex]

Step-by-step explanation:

Given

[tex]n = 4[/tex]

[tex]p = 25\%[/tex]

Solving (a): The probability distribution of x

We have:

[tex]n = 4[/tex]

[tex]p = 25\%[/tex] [tex]= 0.25[/tex]

The probability of not having earthquake insurance (q) is:

[tex]q = 1 - p[/tex]

[tex]q = 1 - 0.25[/tex] [tex]= 0.75[/tex]

If x has insurance, then n - x do not.

The distribution follows a binomial pattern. So, the probability distribution is:

[tex]P(X = x) = ^nC_x * 0.25^x * 0.75^{n-x}[/tex]

Substitute 4 for n

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

Solving (b): The most likely value of x i.e. The mean

We have:

[tex]n = 4[/tex] and

[tex]p = 25\%[/tex] [tex]= 0.25[/tex]

[tex]Mean = np[/tex]

[tex]Mean = 4 * 0.25[/tex]

[tex]Mean = 1[/tex]

Solving (c): At least 2 of 4 selected have earthquake insurance.

This is calculated as

[tex]Pr = P(x = 2) + P(x = 3) + P(x = 4)[/tex]

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

[tex]P(X=2) = ^4C_2 * 0.25^2 * 0.75^{4-2}[/tex]

[tex]P(X=2) = 6 * 0.25^2 * 0.75^2 = 0.2109375[/tex]

[tex]P(X=3) = ^4C_3 * 0.25^3 * 0.75^{4-3}[/tex]

[tex]P(X=3) = 4 * 0.25^3 * 0.75 = 0.046875[/tex]

[tex]P(X=4) = ^4C_4 * 0.25^4 * 0.75^{4-4}[/tex]

[tex]P(X=4) = 1 * 0.25^4 * 1= 0.00390625[/tex]

So:

[tex]Pr = P(x = 2) + P(x = 3) + P(x = 4)[/tex]

[tex]Pr = 0.2109375 + 0.046875 + 0.00390625[/tex]

[tex]Pr = 0.26171875[/tex]

[tex]Pr = 0.2617[/tex] --- approximated

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: 16

Step-by-step explanation:

there are 3 feet in one yard so divided 48 by 3 and you get 16

Answer:

16

Step-by-step explanation:

Answer:

k=

−2.75x2+3xy−5.5x−y/x

Step-by-step explanation:

Hi! so i see you need help with this problem let me help you and guide you through the steps :]

Let's solve for k.

k= y/x

(3x−1)−2.75(x+2)

Step 1: Multiply both sides by x.

kx=−2.75x2+3xy−5.5x−y

Step 2: Divide both sides by x.

kx/x

=

−2.75x2+3xy−5.5x−y/x

k=

−2.75x2+3xy−5.5x−y/x

Answer:

k=

−2.75x2+3xy−5.5x−y/x

Answer:

more information

Step-by-step explanation:

Answer: G

Step-by-step explanation:

Its g because its on the same side of the cube

Answer: G

Step-by-step explanation:

Answer:

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

A≈201.06

A≈4417.86

Answer:

6

Step-by-step explanation:

The computation of the least possible whole number is shown below:

Here we need the factors of 150 i.e.

= 3 × 5 × 2 × 5

Here we can add  to one box and the 5 to the other box

And, now if we can add 3 to one box and in the other we can add 2 so they cant be equal to each other

Now lets try 5 × 6 and 5

So, here The perfect square is 900

= 30 × 30

= 900

Hence, the number would be 6