Mathematics High School

Evaluate the expression 5k2 - 7k when k = 3

Answers

Answer 1

Answer:

24

Step-by-step explanation:

In this question, you have to solve by plugging in the value to the "k" variable and solve.

Solve:

5(3)^2 - 7(3)

3^2 = 9

5(9) - 7(3)

45 - 7(3)

45 - 21 = 24

Your final answer would be 24.

Answer 2

Answer:

24

Step-by-step explanation:

5(3)^2 - 7(3)

5(9) - 21

45 - 21

24

Related Questions


Find the equation of the line
passing through the points (5, 2)
and (10, 6).
y =
Xt

Answers

Answer:

y=4/5x-2

Step-by-step explanation:

here are the given points: (5,2) and (10,6)

First, let's find the slope, which is found with the equation (y2-y1)/(x2-x1)

so let's label the points

x1=5

y1=2

x2=10

y2=6

now we can substitute into the equation

m=(6-2)/(10-5)

subtract

m=4/5

so that means the slope is 4/5

Now, let's use point slope form, which is y-y1=m(x-x1) (m is the slope)

so let's substitute the numbers we know from earlier into the equation

y-2=4/5(x-5)

do distributive prop.

y-2=4/5x-4

add 2 to both sides

y=4/5x-2

hope this helps!

Cory has a sister named Jessica. Jessica is 7
years older than twice Cory's age. Write an
expression that represents the relationship of
Jessica's age in terms of Cory's age, c.

Answers

Answer:

2c+7

Step-by-step explanation:

Jessica is 7 more than 2x Cory's age.

Given that Cory is c years old,

then Jessica is

2c+7

I hope this helps! :)

Tyrone is designing a new recycling
program for a school. Tyrone charges the
school $1125 for 9 hours of consulting
work. His rate is constant.

Answers

Answer:

125$ per hour

Step-by-step explanation:

Answer: 125 dollars per hour

Step-by-step explanation:

1125 / 9 = 125

Solve for X and solve for Y?

Answers

Answer:

[tex] x=3\sqrt 5\\[/tex]

[tex]y = \sqrt {126}[/tex]

Step-by-step explanation:

By geometric mean property:

[tex]x = \sqrt{9 \times 5} = \sqrt{45} = 3 \sqrt{5} \\ \\ by \: pythagoras \: theorem \\ \\ {y}^{2} = {9}^{2} + {x}^{2} \\ \\ {y}^{2} = {9}^{2} + {(3 \sqrt{5}) }^{2} \\ \\ {y}^{2} = 81 + 45 \\ \\ {y}^{2} = 126 \\ \\ y = \sqrt{126} [/tex]

I'm so confused
At the beginning of the school year, the number of students in the band was the same as the number of students in the choir. Throughout the school year, the number of students in the band decreased by 8, and the number of students in the choir decreased by 4. At the end of the school year, the number of students in the choir was 25% more than the number of students in the band. How many students were in the band at the beginning of the school year?

At the beginning of the school year, _________ students were in the band

Answers

Answer: 16............................

Answer:

16

Step-by-step explanation:

4=25%

Ben is making a chart in which he is listing the masses of different planetary bodies. He plans to write the masses in scientific notation. Convert the values in scientific notation to standard notation.
The mass of Ganymede is 1.48E23, or
, kilograms.
The mass of Pandora is 2.20E17, or
, kilograms.

Answers

Answer:

1.48E23 in standard notation is 148,000,000,000,000,000,000,000 and 2.20E17 is 220,000,000,000,000,000

Answer:

1.48E23 in standard notation is 148,000,000,000,000,000,000,000 and 2.20E17 is 220,000,000,000,000,000

Step-by-step explanation:

The ratio of chickens to lambs is 5:7 respectively. If the total numbers of animals is 108, how many are there? Explain.

Answers

Answer:

there are irdk

Step-by-step explanation:

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y=1x-8

Step-by-step explanation:

the y intercept is the b in y=mx+b

Please help me and it is not 12.
Value of

Answers

Would it be 18 if it’s not 12? I’m sorry i don’t know but i’m trying to help as much as possible

Answer:

Its 12

The correct answer is 12

the other angle also has to be 6x

6x+6x+3x=180

15x=180

x=12

Hope This Helps!!!

what is the answer to 72.8+164.02+174.01

Answers

Answer:410.83

Step-by-step explanation:

Just add, its easy

Answer:

410.83

Step-by-step explanation:

Hope this helps!!!

3х +4y = -10
y = -3/4x - 5/2

Answers

Answer:

y= - 3/4x - 2/5

Step-by-step explanation:

I used a calculator and got that answer

Daily Poll: Which helps you understand ratios better? *
Double Number Lines
O Tables

Answers

Answer:none...

Step-by-step explanation:

What is the equation of the line that contains the points
(-5,0) and (0,6) ?

Answers

Answer:

y=6/5+6

Step-by-step explanation:

I do not understand this. Can you please explain.​

Answers

Answer:

E

Step-by-step explanation

y^(3/5) = [tex]\sqrt[5]{y{3}}[/tex]

y^(-3/5) = 1/[tex]\sqrt[5]{y{3}}[/tex]

1 A fishbowl shaped like a sphere is filled with water. The fishbowl has a
diameter of 16 inches. Which measurement is closest to the volume of water
in the fishbowl in cubic inches?

Answers

Answer:

2145 cubic inches

Step-by-step explanation:

formula for Volume of a sphere: 4/3·π·r³

V = 4/3 ·π ·(8)³

V = 4/3π · 512

V ≈ 2145

Could you help me solve this problem

Answers

Answer:

The bottom half is the only half of the problem that is shown.

Step-by-step explanation:

I don't know YOU explain that...

Solution:
Incomplete question so no solution

help me pls...
I will give 20 points and brainly

Answers

Answer:

[tex]1 \times { 10}^{ - 9} m[/tex]

Step-by-step explanation:

It can be written in scientific notation as [tex]1 \times { 10}^{ - 9} m[/tex],

Hope this helps u.... ^_^❤️

Answer:

a) 1 nm = 0. 000 000 001 m

b) 1 nm = 1×10⁻⁹ m

jesus joseph maryian christ, what is this math problem ? 25 points

Answers

Answer:

1,075,920,000,000 km³

what is the value of -6-(x+3)y when x = -5 and y = 2????

Answers

Answer:

-2

Step-by-step explanation:

Answer: -2

Step-by-step explanation:

Substitute -5 for x and 2 for y in the expression, which gives -6 minus the quantity -5+3, all divided by 2.

Then, use the order of operations to simplify the numerator of the expression. Finally, simplify the fraction, which gives -2. So, when x equals -5 and y equals 2, the expression is equal to -2.

People most likely need to take out a mortgage when they
a) have bad credit.
b) are making a large purchase.
c) are spending less than $1,000.
d) have legal problems.
FIRST ANSWER GETS BRAINLIEST ;)

Answers

Answer:

a or c

Step-by-step explanation:

Which of the following equations represents a proportional relationship?
a
y = 5x
b
y = x + 1/2
c
y = 1/2 x + 5
d
y = 5/x

Answers

Answer:

(a)

Step-by-step explanation:

The equation representing a proportional relationship is

y = kx ← k is the constant of proportion

The only equation fitting this description is (a) y = 5x

Click on the measurement that is equal to 20 liters.
A)20.000 milliliters
B)2,000 milliliters
C)2 milliliters
D)200 milliliters

Answers

Answer:

A.

Step-by-step explanation:

20000milliters = 20litres

Answer:

20 000 ml

Step-by-step explanation:

1 l = 1000 ml

Find the 94th term of the arithmetic sequence -26,-37,-48,...

Answers

Answer: -997

Step-by-step explanation:

It keeps going down by 11 so it becomes -11. Then multiply that by 93 and you get 1,023 then add 26 to that to get the answer.

IM GOING TO START CRYING PLEASE HELP ME THIS IS SO HARD

Answers

Answer: what is

Step-by-step explanation:

Answer:

there is nothing ................

Is this shape a regular polygon

Answers

no that’s an octagon
It is not a polygon, it is a octagon. Oct- is 8 and that shape has 8 sides

Evaluate the expression 3(9 - 16)

Answers

Answer:

Just use the distributive property.

3 times 9 is 27, and -16 times 3 is -48.

This means your expression comes out to be:

27-48

Solve that, and you get -21

At the burger place, 3 mini hamburgers fit in each small to-go bag. if the baldwin family ordered 41 mini hamburgers for the trip, how many bags were used?

Answers

How man bags were used?

41 / 3 = 13.7

We can say about 14 bags by rounding to the nearest whole number. Therefore, 14 bags were used.

Answer:

14 bags

Step-by-step explanation:

10 x 3 = 30

3 x 3 = 9

3 x 1 = 3

30 + 9 + 3 = 42

You have to round because if you didn't your answer is : 13.6667

Find the value of x in the triangle shown below.

X=____

Please help!!

Answers

Answer:

62

Step-by-step explanation:

the sum of all angles in a triangle should be 180°

180-56= 124

124÷2= 62

x= 62

Answer:

The sum of the interior angles of a triangle is 180°.

Two sides of the triangle is same, so the their corresponding angles will also be same.

[tex]x + x + 56 = 180 \\ 2x = 180 - 56 \\ 2x = 124 \\ \boxed{x = 62°}[/tex]

62° is the right answer.

The diameter of a circle is 9.6 feet what is the area code ?

Answers

Answer:

Area = π[tex]4.8^{2}[/tex]

Step-by-step explanation:

In order to find the radius, you must divide the diameter by 2:

[tex]r = \frac{9.6}{2} = 4.8[/tex]

Area of a circle:

A = π[tex]4.8^{2}[/tex]

A = 72.38 ft^2

Ryan is building a tree he use. It will take hours to complete. He can work on the tree
house hours each day. tow many days will it take Ryan to complete the tree
house?

Answers

Answer:

come have IT with me baby

Step-by-step explanation:

it will make us feel better

Other Questions
Filipino rebels introduced the United States to this style of asymmetricalwarfare:a. open field b. guerilla c. tankd. house to house when demographers examine the average number of children a population of women have in their lifetimes, they are looking at the____.A. birth rateB. growth rateC. fertility rateD. migration rate Escribe una frase con PERO Steve determines that sides DK and BC are congruent. He also measures angle K and angle C and determines thatthey are congruent. He concludes that the triangles are congruent by the SAS Congruence Theorem. Is Steve correct?If he is incorrect, which congruence theorem should Steve use? Explain your reasoning What was the purpose of the assembly in ancient Athens I gave you five answers be happy. put (your aunts age a minus 25) in a algebraic expression Outdoor fitness posted $1.2 million in sales on account in December. Which division of the accounting department is responsible for processing these transaction? How do you know? Need this ASAP please... what expression is equivalent to 3/5x + 2/5 + 3/5x Is methemoglobinemia recessive or dominant? Provide examples to back upyour answer please help meeeee :(( !!!!! PLEASE PLEASE HELP ME !!!!! IS ANYONE SEEING MY QUESTIONS??Find the standard equation for the circle with center on the negative y -axis and passing through the origin with radius of 3.A. x^2 + y^2 = 9B. (x + 3)^2 + y^2 = 9C. x^2 + (y + 3)^2 = 9 A blueprint was made using a scale of 2cm = 4.5m. If the bridge had a length of 2,737m, how long would the drawing be to the nearest cm? Of the shirts produced by a company, 6.5% have loose threads, 9.5% have crooked stitching, and 3% have loose threads and crooked stitching. Find the probability that a randomly selected shirt has loose threads or has crooked stitching. Plzzzzzzzzzzz helpppppp integral of below. y . e^-y^3 John is buying toy cars. If each car is 0.35 cents, how many cars can John buy with 1,000 dollars? Which of the following are used by European countries to decrease air pollution? (multiple responses: mark all that apply)Creating "smokeless" zonesCreating "smokeless" zonesRequiring strict emissions standards from auto manufacturersRequiring strict emissions standards from auto manufacturersTesting air quality regularlyTesting air quality regularlySwitching to hydroelectric, solar, and wind energies Susana y Laura estudian Quieres leer en la cocina-Tio Claudio, quiero leer. Dnde est Susana?En su dormitorio. Su amiga Laura estaSi, y voy al dormitorio en una hora. Water usage in the United States hasO fallen sharply during the last fifty years.O increased slightly during the last fifty years.O remained steady during the last fifty years.O tripled during the last fifty years.