Mathematics High School

The value of y varies directly with x. If x=6, then y=21
.
Find the value of x when y=70

Answers

Answer 1

Answer:

Direct proportionality

The Value Of Y Varies Directly With X. If X=6, Then Y=21. Find The Value Of X When Y=70
Answer 2

If the value of y varies directly with x, the value of x when y=70 is 20.

Given that, the value of y varies directly with x.

What is a proportional relationship?

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

We know that, the value of y varies directly with x

y ∝ x

⇒ y = kx

⇒ k = y/x

⇒ k = 21/6

⇒ k = 7/2

So, k = y/x

7/2 = 70/x

⇒ 1/2 = 10/x

⇒ x = 20

Therefore, if the value of y varies directly with x, the value of x when y=70 is 20.

To learn more about the proportional relationship visit:

brainly.com/question/12917806.

#SPJ2

Related Questions

Are 3/5 and 18/32 equivalent ratios? Explain how you know (be specific). If you just say yes or no you will not get full credit. *

Answers

Answer:

No they are not equivalent,

Step-by-step explanation:

3 x 6 is 18 and 5 x 6 is 30,  not 32 so it is non-equivalent

How many vertices does this shape have?



Answers

Answer:

6 i think

Step-by-step explanation:

vertices are the points and there are 6 points

I need help with this question ASAP

Answers

It would be the first, third, fifth, and sixth one
.
Hope this helps :)

Beatrice threw a stone one and seven fourteenths yards. Tilly threw a stone nine fourteenths of a yard. What is a reasonable estimate of the difference between their two throws?

a. 1 yard
b. one and one half yards.
c. 2 yards
d. two and one half yards

Answers

its b !!!!!!!!!!!!!!!!!!!!!!

Please answer this question
B=3V/h
Solve for V

Answers

Answer:

V = [tex]\frac{Bh}{3}[/tex]

Step-by-step explanation:

Given

B = [tex]\frac{3V}{h}[/tex] ( multiply both sides by h )

Bh = 3V ( isolate V by dividing both sides by 3 )

[tex]\frac{Bh}{3}[/tex] = V

PLEASE HELP I WILL GIVE BRAINLIEST IF 2 PEOPLE ANSWER! Find the area of a square with side length x when x is equal to the given value. Are the area of a square and the length of its side directly proportional? Justify Your Answer.
x = 15 inches.
The area of the square is __ square inches.

Answers

Answer:

The area of the square is 15²

the area of a square and the length of its side are directly proportional because The area of the square is x²=> when its edge decreases, the area of ​​the figure decreases

Step-by-step explanation:

So how are 1/2 and 4/8 Similar?

Answers

Answer:They both equal 1 half

Step-by-step explanation:To put it a lil more simply, 1/2 = 0.5 and 4/8 also = 0.5

Answer:

1/2 is 4/8. 1/2 is just 4/8 but simplified. So 12/36 simplified is 1/3, 24/48 is 1/2

The Bigtown football team outscored its opponents 5:2 last season.
If their opponents scored 38 points, how many points did Bigtown
score?

Answers

Step-by-step explanation:

5:2 add to find total ratios 7

opponents=2/7=38

bigtown=5/7=95

Answer: The big town team scored 95 points.

Step-by-step explanation: Given that the big town football  team outscored its opponents 5:2 last season and their opponents scored 38 points.

We are to find the points scored by big town team.

Let 5x and 2x represents the points scored by big town team and their opponents.

Then, according to the given information, we have

2r = 38

r = 38/2

r = 19

Therefore, the points scored by big town team is given by

5 X 19 = 95.

Thus, the big town team scored 95 points.

Need help fast!!!!!!

Answers

Answer:

45 i think

Step-by-step explanation:

use the slope-intercept form to graph y=3/5x-3

Answers

Answer:

Step-by-step explanation:

Find the slope between (9,-2) and (-1,5)

Answers

Answer:

7/-10

Step-by-step explanation:

subtract

5-(-2) = 7

-1-9 = -10

Answer:

The slope is -0.7 or -7/10

Step-by-step explanation:

For 10 x values decreased, the y values go up 7 values. So the slope is -7/10 or -0.7

I hope that this helps! :)

can someone answer this

Answers

Answer: It's obviously D.

Step-by-step explanation:

I think it’s C because there’s no value so it would be a variable

Which are equivalent equations? Select two correct answers.

d1 = 2Ad2
d1 = d 1 equals StartFraction 2 A Over d 2 EndFraction.
d2 = d 2 equals StartFraction d 1 Over d2 A EndFraction.
d2 = d 2 equals StartFraction 2 A Over d 1 EndFraction.
d2 = 2Ad1

Answers

Answer:

B and D if not sorry

Step-by-step explanation:

Answer:

b and d

Step-by-step explanation:

help me I'm bout to breakdown on this and cry help I'm rlly not ok​

Answers

Answer:

বাংলা ৬ নাম্বার প্রশ্নের উওর টা কি

Answer: 3/5 is the correct answer

Help me plzplzplzplz1

Answers

Answer:

The answer is 400 when you round it off to the nearest hundred.

what is
x/6+21=28
I need to know quick please help me

Answers

Answer:

x=42

Step-by-step explanation:

x/6+21=28

28-21=x/6

7=x/6

x=7*6

x=42

Answer:

42

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

Which inequalities have the solution set graphed on the
number line? Check all that apply.
O x2 -1.5
Oxs -1.5
D -1.5 SX
D -1.5 2 x
Oxs -2.5
O x 25
25 2x

Answers

Answer:

B,C

Step-by-step explanation:

0x + 8 = 5x - 3 What is X?

Answers

Answer:

x= 11/5 OR 2.2

Step-by-step explanation:

Answer: x= 2.2

Step-by-step explanation:

0x+8=5x-3

    +3     +3

0x+11=5x

5    5   5

x=2.2

THIS IS FOR 60PTS SO ANSWER Explain how you got your answer 4x-20+2x-12=10

Answers

Answer:

x = 0.333...(repeating or .34 if u round)

Step-by-step explanation:

add 4x and 2x= 6x

20- 12 = 8

6x + 8 = 10

  -8      -8

6x = 2

6      6

             

x = 0.333...(repeating or .34 if u round)

5x -4y = -23

-5x + 9y =8

Answers

Answer:

Let's solve for x.

5x−4y=−23−5x+9y

Step 1: Add 5x to both sides.

5x−4y+5x=−5x+9y−23+5x

10x−4y=9y−23

Step 2: Add 4y to both sides.

10x−4y+4y=9y−23+4y

10x=13y−23

Step 3: Divide both sides by 10.

10x

10

=

13y−23

10

x=

13

10

y+

−23

10

Answer:

x=

13

10

y+

−23

10

Step-by-step explanation:

Wanna chat add me as a friend OR COME TO SANP (ADAMBELAL839)

what is 10m-2?
Variables are really hard for me so if anyone can help me with this problem that would be really great

Answers

Answer:

tytyty

Step-by-step explanation:

Is y=3x-8 proportional

Answers

Step-by-step explanation:

YES! HOP THIS HELPS

I think sooooooooooo

Noah says that to find 20% of a number he divides the number by 5. For example, 20% of 60 is 12, because 60÷5=12. Does Noah’s method always work? Explain why or why not.

Answers

Answer:

yes

Step-by-step explanation:

because if you divide what you said its will have a sum

I'M GIVING BRAINLIEST
I just need help with the equation, you don't have to solve it

Answers

Answer:

OOF

Step-by-step explanation:

Answer: i don't actually know, sorry but i need to get my points so i'm typing this.

Step-by-step explanation: none

PLEASE HELP LINEAR EQUATIONS!!
3(2x-5)=-15

Answers

Answer:

x=0

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

3(2x−5)=−15

Step 1: Simplify both sides of the equation.

3(2x−5)=−15

(3)(2x)+(3)(−5)=−15(Distribute)

6x+−15=−15

6x−15=−15

Step 2: Add 15 to both sides.

6x−15+15=−15+15

6x=0

Step 3: Divide both sides by 6.

6x/6 = 0/6

x=0

Hope this helps :)

Answer:

2x-5= -3x times(x) 3 is -9

Step-by-step explanation:

PEMDAS

. Consider the following standards.
MAFS.912.F-BF.1.1b: Combine standard function types using arithmetic operation. For example, build a function that models the temperature of a cooling body by adding a constant function to a decaying exponential, and relate these functions to the model. MAFS.912.F-BF.1.1c: Compose functions. For example, if T(y) is the temperature in the atmosphere as a function of height, and h(t) is the height of a weather balloon as a function of time, then T(h(t)) is the temperature at the location of the weather balloon as a function of time.
Part A: Describe the difference in combining functions and composing functions.
Part B: Give a real-world example of combining functions.
Part C: Give a real-world example of composing functions.

Answers

Part A:

A combined function is defined by combining with existing functions using addition, subtraction, multiplication or division.

A composite function is created by plugging one function into another.

Part B:

The class is selling sweaters an. the cost of each sweater is 8 dollars. There is a fee to create the design. The class plans to sell the sweaters for 12 dollars.

Part C:

Amy works at a baked goods store. She receivers a weekly salary of 350 dollars and is payed 3 percent commission on weekly sales over 1,500 dollars.

oof that took a while lol

(sint-cost)²=1-sin(2t)

Answers

i dont know the way you wan me to solve this but i got 1−2cos(t)sin(t)=1−2sin(t)cos(t)

Brainlest-Pls help me pls thank you sm In advance

Answers

Answer: 90 divided by 45 equals 2     45+45=90

Step-by-step explanation:

Nathan spins 2 different spinners at the same time. There are a total of 10 possible outcomes. Which pair of spinners did Nathan spin? A B 1 2. AB E с 5 3 E с 1 2 D 4 D А B B 1 2 care 1 2 E с D с D 3​

Answers

Answer:

Since the spinners have been spun simultaneously, every side on each of the spinner carries equal probability of landing. In order for there to be only 10 possible outcomes, no more no less, the spinners cannot be identical. One of the spinner in two sided while the other spinner must then be a five sided spinner. Choosing this particular pair of spinners gives Nathan 10 possibilities of combinations.

Hope that answers the question, have a great day!

Step-by-step explanation:

The indoor climbing gym is a popular field trip destination. This year the senior class at High
School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 14 vans and 5 buses with 329 students. High School B rented and filled 11 vans and 5 buses with 281 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.

Answers

Answer:

Step-by-step explanation:

14 x + 5y = 329

11x + 5y = 281(vans is x and busses are y)

cancel out 'y' by making the '5y' in 11x + 5y = 281 negative

-1 (11x + 5y = 281) =

-11x -5y = -281

insert second equation

-11x -5y = -281

14x + 5y = 320

3x = 48

x = 16

substitute vans in one equation

11(16) + 5y = 281

5y = 105

y = 21

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