Mathematics High School

Solve for x.
21x – 4
20x

Solve For X.21x 420x

Answers

Answer 1

Answer:Think x is 3

Step-by-step explanation:

Related Questions

can someone help me please?

Answers

Answer:

(0,4) and (-4,0)

Step-by-step explanation:

Evaulate A+7 when a=4

Answers

Answer:

11

Step-by-step explanation:

Plug in 4 for a and solve.

4+7 = 11

Answer:

4+7=11

Step-by-step explanation:

 

The cost for an order of 100 kilograms of steel bars is $230. The cost for an order of 150 kilograms of steel bars is $320. Write an equation for the cost of an order of steel bars (y) in terms of the weight of steel bars ordered (x). Show or explain how you found your equation.

Answers

Answer:

y = 9x/5 + 50

Step-by-step explanation:

We are represent the information as coordinate (x,y)

If the cost for an order of 100 kilograms of steel bars is $230, this is expressed as (100, 230)

Also if the cost for an order of 150 kilograms of steel bars is $320, this is expressed as;

(150, 320)

Find the equation of a line passing through the points. The standard form of the equation is expressed as y = mx+c

m is the slope

c is the intercept

Get the slope;

m = y2-y1/x2-x1

m = 320-230/150-100

m = 90/50

m = 9/5

Get the y-intercept by substituting m = 9/5 and any point say (100, 230) into the expression y = mx+c

230 = 9/5(100)+c

230 = 9(20)+c

230 = 180 + c

c = 230-180

c = 50

Get the required equation

y = mx+c

y = 9/5 x + 50

Hence an equation for the cost of an order of steel bars (y) in terms of the weight of steel bars ordered (x) is y = 9x/5 + 50

the slope and y intercept of y=-8x​

Answers

Answer:

m = -8

b = 0

Step-by-step explanation:

In slope intercept form [ y = mx + b ], m = slope and b = y-intercept.

We aren't given a b value, but we are given a m value which is -8.

Best of Luck!

A high school is designing a new football field. The field is 125 meters long, including the end zones. If 1 meter = 3.2 feet, how long, in feet is the length of the football field?
Group of answer choices

A: 200 ft

B: 400 ft

C: 40 ft

D: 80 ft

Answers

The answer is B. 400 ft

125 x 3.2 = 400
The answer would be B.

need help ASAP mid term .
- 60 points

Answers

the metal bar/random line is almost the same size as the other two sides of the triangle. if one side is 32ft, then the opposite side is 32ft also. the bottom is 100ft, so we could eliminate C. because it couldnt be that number. now the bottom triangle, one side is 40ft so the other side has to be 40ft as well. its asking about the metal bar.

its either:

A. 53.2ft     or

B. 44.4

because the line is almost the same size as 32ft. its almost a equallateral triangle. i would go with A. though because if you imagine the line at the bottom of the line (100ft.) the line would go over half of it (and 53.2 is over half of 100) so i would say

A.53.2

if this didnt help let me know. and i will delete this (if i can-)

3x^2+ 4x + 5 for x = -2

Answers

The answer is 33
3(-2)^2+4(-2)+5
-6^2+ (-8) + 5
36 + (-8) + 5
28+5
33

CAN U PLZ HELP MEE DONT SCROLL DOWN ILL GIVE BRAINLLEST PLZ PLZZZZ

Answers

Answer:

75.4

Step-by-step explanation:

v = pi * r^2 * h

v = 3.14 * 4 * 6

v= 3.14 * 24

v= 75.36 m^3

to the nearest tenth is 75.4 m^3


Help!- How dilations are used in everyday life ? How about similarity transformations ?? How are they meaningful

Answers

Answer: Dilations can be used in architecture in order to make a sample of their final design. They must dilate the scale and measurements to match to their sample.

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If you could please check out our you tube channel, Evimero Academy

Thank you so much and have a wonderful day

Which is an equation for the line that contains (-1, -2) and has a slope of -5?

Answers

the equation would be y = -5x - 7

what is the slope of the line?

Answers

Answer:

3

Step-by-step explanation:

1. What do you need to show in order to prove that a number is divisible by 3?
Then, use an example to show your explanation is correct. *

Answers

Answer:

You can divide and see if its devided by 3, and if its not in the times table, you will have a decimal

Step-by-step explanation:

x days/ 4 years = 365.26/ 1 year

Question 2:

33.264 feet/ x miles = 5,280 feet/ 1 mile​

Answers

Answer:

x= 1,461 days

x= 0.0063 feet

Step-by-step explanation:

Set up a fraction and cross multiply, then divide to isolate the x variable

Jamar spent $5.60 on 5 bags of Doritos The neighborhood store. how much did each bag of chips cost?

Answers

Answer:

5!60

Step-by-step explanation:

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The disks of polish kielbasa measure to be 1/4 of a inch. If there are 36 disks altogether, what is the total length of polish keilbasa being using? White a number sentence to go with your answer. Write it in the simples form

Answers

Answer:

9 inches

Step-by-step explanation:

The disks of polish kielbasa measure to be 1/4 of a inch. If there are 36 disks altogether, what is the total length of polish keilbasa being using?

The total length of polish kielbasa is calculated as:

1/4 of 36 disks

= 1/4 × 36 disks

= 9 inches

The total length of polish keilbasa being used is 9 inches

help me answer this please

Answers

Answer:

-2x+9

Step-by-step explanation:

This is the answer you are looking for hope it helps

Which input value produces the same output value for
the two functions?
O x= -12
O x= -9
O x= -6
O X=-3
HELP PLEASE

Answers

Answer

-6

Step-by-step explanation:

Took test

I REALLY NEED HELP please somebody

Answers

Answer:

WITH WHAT WHATS WRONG???

Step-by-step explanation:

yes tell the question

through: (-3, -4) and (2, 1)

Answers

Answer:

y = 1x - 1

Step-by-step explanation:

[tex]\frac{y2-y1}{x2-x1}\\\frac{1-(-4)}{2-(-3)}\\\frac{1+4}{2+3}\\\frac{5}{5}=1\\y=1x+b\\1=1(2)+b\\1 = 2 + b\\-1 = b\\y = 1x-1[/tex]

I NEED HELP PLS!! i am so confused on what to do if you can explain that would be awesome!

Answers

Answer:I am pretty sure that it is that you add 26 and 71 and then subtract it by 180 and then the other one is across so it would be the same answer so it would be 83

Step-by-step explanation: I hope this helped

Find the measure of angle A.
Please help??

Answers

Answer:

4

Step-by-step explanation:

Answer:

Creo que es 40

Step-by-step explanation:

80+15x+(11x-4)=180

26x=104

x=4

Entonces

11x-4 --> 11*4-4 = 40

Having trouble,Whats 1/3 (-2/4)

Answers

Answer:

-1/6

Step-by-step explanation:

im assuming you meant multiply them? if so then

1         -2            -2           -1

---   *  ---    =       ---    =    ---

3         4              12          6

or

1/3=4/12 and -2/4=-6/12

4/12*-6/12=-24/144=-1/6

Answer:

-1/6

Step-by-step explanation:

just multiply 1/3x2/4=

and then in front of the answer put the negative sign

Markers were placed at altitudes of 10 and 15 feet below sea level.
Enter the integer that represents the altitude closer to sea level.

Helppppppppp please

Answers

Answer:

|10|

Step-by-step explanation:

Since 10 is negative (below the sea level), 10 is 10 spaces away from zero on the number line, meaning your answer is |10|.

What is the value of y in the solution to the system of equations?

One-thirdx + One-fourthy = 1

2x – 3y = –30

Answers

Answer:

y-value = 8

Step-by-step explanation:

1/3x + 1/4y = 1 is the same as 4/12x + 3/12y = 1

which is the same as (4x + 3y)/12 = 1

which is the same as 4x + 3y = 12

add both equations and the 'y' will cancel and you will have 6x = -18

x = -3

2(-3) - 3y = -30

-6 - 3y = -30

-3y = -24

y = 8

Answer:8

Step-by-step explanation:

a college spends 40% of an individual's tuition on salaries and the remainder on other costs if they spend 1,800 on other costs how much is an individual's tuition?​

Answers

Answer:

$3000

Step-by-step explanation:

If the remainder is spent on other costs, then that means 60% of the tuition as spent on other costs.

To find the total tuition, divide 1800 by 0.6:

1800/0.6

= 3000

So, their tuition was $3000

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Daniel can spend no more than $40 at the fair. If admission into the fair is $10 and the rides cost $1.50 each, which inequality represents the greatest number of rides Daniel can go on?


A. 10r + 1.50 ≥ 40
B. 1.50r + 10 ≤ 40
C. 1.50r + 10 <40
D 10r+1.50<40

Explain your reasoning and solve the inequality :

Answers

Answer:

B

Step-by-step explanation:

The sum spent has to be either equal to or less than 40. So r many rides, each of them being 1.50, plus 10 dollars has to equal to less or equal to 40 dollars.

Answer:

The answer is B

The greatest number of rides Daniel can go on is 20.

Step-by-step explanation:

Total: The same or less than 40

Fair Admission: 10

ride: 1.50x

40 ≤ 10 + 1.5r

To solve:

40 ≤ 10 + 1.5r

40 - 10 ≤ 10 + 1.5r - 10

30 ≤ 1.5r

30 ÷ 1.5 ≤ 1.5r ÷ 1.5

20 ≤ r

The greatest number of rides Daniel can go on is 20.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

What is the circumference of the circle
A. 18.84
B. 17.6
C. 21.79
D. 15.65

Answers

Answer:

18.84

Step-by-step explanation:

The formula for circumference is 2(pi)r, I think. The radius is 3. 3 times 2 is 6. 6 times 3.14 is around 18, I think.

hope this helps

Answer:

A

Step-by-step explanation:

help me plz guys for 14 point​

Answers

I think its true, since perimeter is the diatance around. I would say mines correct, but you could try. I hope that helped atleast a little. :)

Prove that the square root of 8+ the Square root of 2 = 3 • 2 1/2

Answers

Answer: [tex] \sqrt{8} = \sqrt{4 \times 2} [/tex][tex]2 \sqrt{2 } + \sqrt{2} [/tex][tex]2 \sqrt{2} + 1 \sqrt{2} [/tex][tex]3 \sqrt{2} = 3 \times 2 {}^{ \frac{1}{2} } [/tex]

it's a two step equation ​

Answers

Answer: -15=x

Step-by-step explanation: subtract 10 on each side then divide -5 on both sides to isolate the variable

-5x=+10-85

5x=-75

x=-75/5=> x= -15

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