Please help I’ll brainlest period

Answer:

4

Step-by-step explanation:

Answer:

Step-by-step explanation:

what do u need help with

Answer:

D. f(x)=x^2​

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

$6.00 × 4 = 24

he gives of his total tips to the hostess which is 24 . so 24 + 24 = 48

Answer:

Jocelyn's plane travelled 3650 miles.

Step-by-step explanation:

mph stands for miles per hour.

Let's set up an equation.

total miles = speed(hours)

Jocelyn's plane travelled 500 mph for 7.3 hours.

total miles = 500(7.3)

Multiply.

total miles = 3650

Jocelyn's plane travelled 3650 miles.

Hope this helps!

Answer:

Complementary angles are 90°

Supplementary angles are 180°

Vertical angles are congruent

Answer:

Complementary Angles: add up to 90

Supplementary Angles: add up to 180

Vertical Angles: are congruent(equal)

Step-by-step explanation:

Answer:

The 95%-confidence interval for the percentage of history majors at U.S. universities who knew Abraham Lincoln's first Vice President is (10.5%, 12.1%).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].

6250 students, 11.3% knew Abraham Lincoln's first vice-president.

This means that [tex]n = 6250, \pi = 0.113[/tex]

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.113 - 1.96\sqrt{\frac{0.113*0.887}{6250}} = 0.105[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.113 + 1.96\sqrt{\frac{0.113*0.887}{6250}} = 0.121[/tex]

As percentages:

0.105*100% = 10.5%

0.121*100% = 12.1%

The 95%-confidence interval for the percentage of history majors at U.S. universities who knew Abraham Lincoln's first Vice President is (10.5%, 12.1%).

Answer:

Subject : Tomato plant

Explanatory variables : Watering condition ; Fertilizer addition

Treatment : daily watering ; half fertilizer ; full fertilizer

Response variable = Number of tomato picked

Step-by-step explanation:

Subjects are the individuals, animals or plants upon which treatment is applied. The subject here are the tomato plants

The Explanatory variables are the independent variables upon which we want base the variation of the dependent variable. The Independent variables are the watering condition a d the amount of fertilizer added.

Treatment : These are the actual changes made or applied on the subject, they include, daily watering, full or half fertilizer application.

Response variable : The number of tomatoes picked. This is also called the dependent variable, it is the outcome which may be due to the effect of the independent variable.

Answer:

Big pizzas = B. Normal pizzas = N;

10B + 5N = 80

Step-by-step explanation:

Required equation that matches the given situation is 5x+10y = 80

Let the number of individual pizza be x

Let the number of large pizza be y

Cost to be spent is $80

Cost of individual pizza = $5

Cost of large pizza = $10

The equation matched this situation is 5x + 10y = 80.

Hence, the required equation is 5x + 10y = 80

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Answer:

74,76,78,80,82

Step-by-step explanation: even numbers are whole numbers that have 0,2,4,6,8 in their ones place

Step-by-step explanation:

[tex](9) {}^{2} = (5) {}^{2} + (x) {}^{2} \\ 81 = 25 + {x}^{2} \\ {x}^{2} = 56 \\ x = 2 \sqrt{14} = 7.4[/tex]

Answer: b

Step-by-step explanation: divide and round

Answer:

I believe the best answer is A

Answer:

[tex]4x^2y(x^2y - 4x^2y+2)[/tex]

Step-by-step explanation:

Given

[tex]4x^4y^2-16x^4y^2+8x^2y[/tex]

Required

Factor

[tex]4x^4y^2-16x^4y^2+8x^2y[/tex]

Factor out [tex]4x^2[/tex]

[tex]4x^2(x^2y^2 - 4x^2y^2+2y)[/tex]

Factour out y

[tex]4x^2y(x^2y - 4x^2y+2)[/tex]

Step-by-step explanation:

For y = 2^x:

f(-3) = 2^-3. f(-2) = 2^-2. f(-1) = 2^-1

= 1/8 = 1/4. =1/2

f(0) = 2^0 f(1) = 2^1. f(2) = 2^2

= 1 = 2. =4

f(3) = 2^3

=8

For 3y = 7x + 3, y= (7x+3)/3

f(-3) = [7(-3)+3] / 3. f(-2) = [7(-2)+3] / 3

= -6. = -11/3

f(-1) = [7(-1)+3] / 3. f(0) = [7(0)+3] / 3

= -4/3 = 1

f(1) = [7(1)+3] / 3. f(2) = [7(2)+3] / 3

= 10/3 = 17/3

f(3) = [7(3)+3] / 3.

= 8

point of intersection, where y=2^x and 3y = 7x + 3 has the same x and y coordinate

Answer: (0,1) and (3,8)

Answer:

yes, it is right triangle

Step-by-step explanation:

to know if it is right triangle or not, you need to assume that the longest side is the hypotenuse which is 13.

next, the angle between 12 and 5 must be 90 to prove that it was right triangle

to prove that, let's use cosinus theorem

[tex] {13}^{2} = {12}^{2} + {5}^{2} - 2(12)(5) \cos(x) \\ 2(12)(5) \cos(x) = {12}^{2} + {5}^{2} - {13}^{2} \\ \cos(x) = \frac{ {12}^{2} + {5}^{2} - {13}^{2} }{2(12)(5)} \\ \cos(x ) = 0 \\ x = 90[/tex]

from that, we know it is a right triangle

Answer:

I DONT SEE TRIANGLES

Step-by-step explanation:

Answer:

try letter B

Step-by-step explanation:

and can you be my friend

Answer:

Step-by-step explanation:

C the quotient would be N/12 not 12/N

Answer:

Surface area of the given pyramid = 386.16 cm²

Step-by-step explanation:

Surface area of the given pyramid = Area of the square base + Area of the lateral sides

Area of the square base = (Side)²

                                        = (12)²

                                        = 144 cm²

Area of the lateral side = [tex]\frac{1}{2}(\text{Base})(\text{Lateral height})[/tex]

Lateral height of the triangle = [tex]\sqrt{6^2+(9.1)^2}[/tex] [By applying Pythagoras theorem]

                                                = [tex]\sqrt{82.81+36}[/tex]

                                                = [tex]\sqrt{118.81}[/tex]

                                                = 10.9 cm

Area of the lateral side = [tex]\frac{1}{2}(12)(10.9)[/tex]

                                      = 60.54 cm²

Surface area of the given pyramid = Area of the base + 4(Area of one lateral side)

                                                          = 144 + 4(60.54)

                                                          = 144 + 242.16

                                                          = 386.16 cm²

Answer:

Abigal is correct, it it 4:3

Step-by-step explanation:

4:3 because 40:30 is only 10 times larger than the 4:3

Answer:

0.2835 = 28.35% probability that exactly two of them require warranty repairs.

Step-by-step explanation:

For each TV, there are only two possible outcomes. Either they require warranty repairs, or they do not. The probability of a TV requiring warranty repairs is independent of any other TV, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

10% require repair to be done under the warranty during the first year service.

This means that [tex]p = 0.1[/tex]

A particular dealership sells 18 such TV per week.

This means that [tex]n = 18[/tex]

a) What is the probability that exactly two of them require warranty repairs?

This is [tex]P(X = 2)[/tex]. So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 2) = C_{18,2}.(0.1)^{2}.(0.9)^{16} = 0.2835[/tex]

0.2835 = 28.35% probability that exactly two of them require warranty repairs.

Answer:

15x + 190 >= 400

* >= means greater than or equal to *

at least 14 friends

Step-by-step explanation:

without the inequality it'd be 15x + 190 = 400

but since you want it to be at least 400 you change the = to the greater than or equal to sign

15x + 190 = 400 * subtract 190 from both sides*

15x = 210 *divide both sides by 15*

x = 14

Answer:

D. 42 units

Step-by-step explanation:

The perimeter of the rectangular shown on the coordinate plane = sum of all it's four sides

= 2(length + width)

Length = 11 units

Width = 10 units

Plug in the values

Perimeter = 2(11 + 10)

= 2(21)

= 42 units

Answer:

2

Step-by-step explanation:

Answer:  the answer is #31.35

Step-by-step explanation:

9514 1404 393

Answer:

  6%

Step-by-step explanation:

The fee can be found from the ratio of fee to price:

  $7.80/$130 = 0.06 = 6%

The restocking fee is 6% of the price of the item.

Answer:

4:50 PM

Step-by-step explanation:

I hope it helps you

Answer:

simple interest

Step-by-step explanation:

An additional amount of money added to borrowed money only on the principal could be simple interest.

If the initial amount (also called as principal amount) is P, and the interest rate is R% annually, and it is left for T years for that simple interest, then the interest amount earned is given by:

[tex]I = \dfrac{P \times R \times T}{100}[/tex]

Since, the initial amount (also called as principal amount) is P, and the interest rate is R% per unit of time, it is left for T unit of time for that compound interest.

we can conclude that the additional amount of money added to borrowed money only on principal is simple interest.

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14:1

If im wrong oops

Answer: 1:14

Step-by-step explanation:

28/2 = 14

Answer:

267.75

Step-by-step explanation:

i think this because that what I got by multiplying 3 1/2 x 9 x 8 1/2