Mathematics High School


2. The value of y varies directly with x. When y = 45, x = 4. What is the
value of y when x is 7?

2. The Value Of Y Varies Directly With X. When Y = 45, X = 4. What Is Thevalue Of Y When X Is 7?

Answers

Answer 1

Answer:

direct variation means y=kx (inverse variation is yx=k or y=k/x)

so we are given that:

75=k/2, so k=150 which means:

y=150x  now

y(2.25)=150(2.25)=337.5

Related Questions

What is the volume of a cone(in cubic inches) with a radius of 3 inches and a height of 6 inches? Use 3.14 for PI. Round your answer to the nearest hundredth.

Answers

Answer:

56.52

Step-by-step explanation:

volume formula of cone-v=(1)/(3)\pi r^(2)h

v=(1)/(3) (3.14) (3)^(2) (6)

v=(1)/(3) (3.14) (9) (6)

v=(1)/(3) (169.56)

v=169.56 ÷ 3

v=56.52

plz mark brainliest

let me know if yall need  help with som else :)

Solve the system by elimination
-6x + 6y = 0
9x - 8y = 4

Answers

Answer:

x=4, y=4

Step-by-step explanation:

X=(4+8y)/9

-6×(4+8y)/9 +6y=0

-2×(4+8y)/3+ 6y=0

-2×(4+8y) + 18y =0

-8-16y+18y=0

2y=8

y=4

-6x+6×4=0

-6x=-24

x=4

A container of rainwater is evaporating at 1.6 inches a week. How many weeks will it take for the rainwater in the container to evaporate 24 inches?​

Answers

Answer:

15 weeks

Step-by-step explanation:

if you divide 24 / 1.6 you get 15

and 15 x 1.6 is 24

estimate the square root of 55 to the nearest tenth

Answers

Answer:

7.40

Step-by-step explanation:

square root of 55 is 7.41619848

Rounding to the nearest tenth, radical 55 would equal= 7.40

Help again thanks I just keep forgetting how to do these sometimes 5 6 and 7

Answers

Answer:

5. 3.08, 3.8, 3.89

6. 20.09, 20.65, 20.7

7. .054, .340, .43

5.    3.08, 3.8, 3.89

6.    20.09, 20.65, 20.7

7.    0.340, 0.43, 0.53  

Write a linear function f with the values f (6) = 8 and f (9) = 3.

Answers

Given:

Two values of a linear function are f (6) = 8 and f (9) = 3.

To find:

The linear function.

Solution:

According to the question f (6) = 8 and f (9) = 3, it means the function passes through (6,8) and (9,3).

If a linear function passes through two points then the equation is

[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

So, the equation of linear function is

[tex]y-8=\dfrac{3-8}{9-6}(x-6)[/tex]

[tex]y-8=\dfrac{-5}{3}(x-6)[/tex]

[tex]y-8=-\dfrac{5}{3}(x)-\dfrac{5}{3}(-6)[/tex]

[tex]y-8=-\dfrac{5}{3}(x)+10[/tex]

Add 8 on both sides.

[tex]y=-\dfrac{5}{3}(x)+10+8[/tex]

[tex]y=-\dfrac{5}{3}(x)+18[/tex]

Function form is,

[tex]f(x)=-\dfrac{5}{3}(x)+18[/tex]

Therefore, the required linear function is [tex]f(x)=-\dfrac{5}{3}(x)+18[/tex].

Order the numbers from least to greatest.

−115,−2.4, 1.6, 1510,−2.25

Answers

Answer:

-115, -2.4, -2.25, 1.6, 1510

Step-by-step explanation:

Answer : -115 , -2.4 , -2.25 , 1.6 , 1510

E
This recipe shows what you need to make 4 pizza bases.
To make FEWER pizza
bases the recipe can
be SCALED DOWN
To make MORE pizza
bases the recipe can
be SCALED UP
PIZZA BASES
Makes 4
600 g flour
3 teaspoons of salt
24g yeast
420 ml water
50 ml cooking oil
For 8 pizza bases you need :-
200
flour
For 2 pizza bases you need :-
300 flour
1.5
teaspoons of salt
12
yeast
210
water
DOUBLE
HALVE
the
amounts
the
amounts
691 teaspoons of salt
48 yeast
Aue water
toe cooking oil
25 cooking oil
[2]
93
I need to make 6 pizza bases
For 6 pizza bases you need :-
flour
How can you work out how much of each ingredient he needs ?
teaspoons of salt
yeast
water
Complete the recipe.
cooking oil

Answers

Answer:

I KNOWWWWWWW THEE ANSWERRRRRRRRRR BUT I CANT TELL ITS A SECRET

Step-by-step explanation:

identify three examples of molecules that are proteins?

HELP PLEASE

Answers

Step-by-step explanation:

I really don't know sorry

Hemoglobin, collagen, and lipase

Gregg climbed 100 steps and 50 seconds how many steps did he climb per second

Answers

Answer:

2

Step-by-step explanation:

a number n decreased by 5

Answers

Answer:

n - 5

Step-by-step explanation:

Decreased = subtractionn decreased by 5 = n - 5

I hope this helps!

The new number after decreasing the original number "n"  by 5 is (n - 5).

Let the unknown number = n

When a number is decreased by another number, it implies that the new number or outcome will be the difference between the two old or original numbers.

To decrease the number by 5, you will subtract 5 from the number as shown below;

the unknown number is decreased by 5:  n - 5

Thus, the new number after decreasing the original number "n"  by 5 is (n - 5).

Learn more here:https://brainly.com/question/16889590

PLZZ HELP ASAP 50 POINTS AND WILL MAKE BRAIN THINGY!!!
Use the unit circle to find all values of θ between 0 and 2π that result in the x-coordinate and y-coordinate being equal.
Select all the correct answers.

Answers

Answer:

pi/4

5pi/4

Step-by-step explanation:

pi/4 has x and y coords. of both sq rt 2 over 2

5pi/4 has x and y coords. of both -sq rt of 2 over 2

hope this helps ^u^

ILL GIVE BRAINLIEST HELP PLEASE!!! I only need the last question answered the formula is y=1.56x+1.29

Answers

Answer:

i got 32 weeks??

Step-by-step explanation:

Answer:

Graph the line using the slope and y-intercept, or two points.

Slope:

1.56

y-intercept:

Step-by-step explanation:

y-intercept:

(

0

,

1.29

)

x

y

−

0.827

0

0

1.29

1 1/5 divided by 3/10

Answers

Answer: 4. This is because 1 and 1/5 = 1.2 and 3/10 = 0.3 and 1.2 divided by 0.3 = 4. That's because 1.2 can be split into 4 equal groups and each group has 0.3.

I need help I will give brainless

Answers

Answer:

what the questions

omg

Answer:

hjkl

Step-by-step explanation:

huh

need help with the answer​

Answers

Answer:

137.5 is the answer

Step-by-step explanation:

2.5x5 is 12.5 and 2.5x50 is 125,  add them and you get 137.5

I need help asappp pleaseee

Answers

If a straight line is 180 degrees you would then set up you equation as (10x+2)+(9x+18)=180
Solving that would give you
X= 8 8/19

Alvin can jog 9 km in 0.75 hr. and bicycle 12 km in 0.5 hr.



How many kilometers does Alvin travel during each event?

Event

d (km)

r (km/hr.)

t (hr.)

Jogging


rj

0.75

Bicycling


rb

0.5

Answers

Answer:

9km - Jogging

12km -Bicycling

Step-by-step explanation:

The question is simply asking us to input the values to make sure we understand the problem.

Answer:

the answer is b

Step-by-step explanation:

im doing the assignment right now

the difference of a number and 6 is equal to 46
algbreic expression

Answers

Answer:

23

Step-by-step explanation:

Help please:) and thx

Answers

Answer:

yes

Step-by-step explanation:

Please help!!!!! Get brainlest⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️
How many solutions does this linear system have?
y = -6x+2
-12x - 2y = 4
one solution: (0,0)
O one solution: (1.4)
O no solution
O infinite number of solutions

Answers

Answer:

No solution

Step-by-step explanation:

6x+y=2

-12x-2y=4

Multiply equation 1 by 2

12x+2y=4.

Subtract the equations

0=8

Impossible so no soultion

Hope this helps plz mark brainliest if correct :D

im pretty sure it only has one solution. (sry if im late to the question.)

PLZ HELP!!!!!

The perimeter of a square is equal to the perimeter of an equilateral triangle. The length of a side of the square is given by x, and the length of a side of the equilateral triangle is given by x + 1. Which equation can be used to find the value of x?
x = 3 (x + 1)
3 x = 4 (x + 1)
4 x = 3 (x + 1)
x = x + 1

Answers

Answer:

4x=3(x+1)

Step-by-step explanation:

Perimeter of the square with side length x is 4x

Perimeter of the triangle with side length x+1 is

3*(x+1)

Given, both are equal,

4x = 3(x+1)

4 x= 3 (x +1) just did the test lol

Write the equation in point-slope form that contains the points (2,4) and (-8,1).

Answers

Answer:

y=3/10x+17/5

Step-by-step explanation:

True of False: When creating a construction exact measurements are used.

Answers

Answer:

true

Step-by-step explanation:

Can you please show the work on Mrs. johnson spent $611 buying lunch for 78 students. If all the lunches cost the same, about how much did she spend on each lunch.

Answers

Answer:

611 divided by 78

Step-by-step explanation:

7.83333333333 round to 7.83

Solve the equation for w
7w + 18 = 10w + 24

Answers

Answer:

The answer is -2.

Step-by-step explanation:

7w + 18 = 10w + 24

7w = 10w + 6

-3w = 6

w = -2

w = -2

Explanation:

7w + 18 = 10w +24

-18 -18

7w = 10w +6

-10w -10w

-3w = 6

÷ -3 ÷ -3

w = -2

find the area and perimeter

Answers

area=30 perimeter=11
6x5=30
6+5=11

Answer:

The p=3    I think the area is 13 if im wrong srry

Step-by-step explanation:

Which is the slope-intercept form of an equation for the line containing
(0, –3) with slope –1?
A y = –x – 3 B y = –3x – 1 C y = x + 3 D x = –3y – 1

Answers

Answer:

The answer is letter A.

Step-by-step explanation:

y=mx+b

-3=(-1)(0)+b

-3=0+b

0 0

-3=b

y= -1x-3

HELPPPPPPPPPPPP!
HELPPPPPPPPPPPP!

Answers

Okie p utcpc gu puugkuxutupxpxuxuoxouuxuoxtxtpxotuxgxpxigxpccoucutxxpixditxgixcgcgicgicipcgicic
okay I think it’s okay to be able too and the only one that is the same side of that the same side is kinda cute

The prices of breakfast cereals in three different box sizes are shown in the table. Based on the information in the table, which statement is true?

Table:
Small. Medium Large
10 oz. 15 oz. 20 oz.
$2.50. $3.00. $4.50.

A: The small box has the highest cost per ounce.
B: The medium box has the highest cost per ounce.
C: The small and large boxes have the same cost per ounce.
D: The medium and large boxes have the same cost per ounce.​

Answers

The answer is B
Step by step
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