if y varies directly as x and y=3 when x=10, find x when y=8

Please, somebody, I need help

Answers

Answer 1

Answer:

26.6

Step-by-step explanation

3=10*k

3/10=.3

y=8

8=.3*x

8/.3=26.6


Related Questions

As shown in the illustration, a starfish has the shape of a pentagon. Look at the illustration of the fruit. How many sides does this polygon have?

Answers

Answer:

Step-by-step explanation:

2

The sides this polygon have is 5 sides.

What is a polygon?

A polygon is a closed figure made up of three or more line segments connected end to end.

Any closed figure made by 4 line segments joined end to end in series is called a quadrilateral.

We are given  shown in the illustration, starfish that has the shape of a pentagon.

Since a pentagon is a polygon that has 5 sides.

Therefore, the sides this polygon have is 5 sides.

Learn more about vertex and apex;

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The hulk is 3 cm taller than Tarzan and 4cm shorter than Superman. If Superman's height is 2 meters, then Tarzan's heoght is

Answers

Answer:

193 cm

Step-by-step explanation:

super man is 200 cm

hulk is 196 cm

tarzan 193 cm

2
Write -1
3
as a decimal.

Answers

Answer:

umm maybe 1.3

Step-by-step explanation:

If 7 toothpaste tubes cost $40.50 how much does one tubes cost?​

Answers

Answer:

According to my calculations, it should be 5.78

Step-by-step explanation:

I just used a calculator for this :b

Answer:$5.78

Step-by-step explanation:

Just divide 7 by 40.50

Greatest common factor 16 and 100

Answers

Answer:

4

Step-by-step explanation:

The greatest common factor (GCF)

The greatest common factor of 16 and 100 is 4, and it represents the largest number that can evenly divide both 16 and 100.

Here,

To find the greatest common factor (GCF) of two numbers, we need to identify the largest number that can evenly divide both numbers.

Here's the step-by-step process to find the GCF of 16 and 100:

Step 1: List the factors of each number.

The factors of 16 are 1, 2, 4, 8, and 16.

The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100.

Prime factorization of 16:

16 = 2 * 2 * 2 * 2

Prime factorization of 100:

100 = 2 * 2 * 5 * 5

Step 2: Identify the common factors.

The common factors of 16 and 100 are 1, 2, 4.

Step 3: Find the greatest common factor.

Among the common factors, the greatest common factor (GCF) is the largest one, which is 4.

So, the GCF of 16 and 100 is 4.

In conclusion, the greatest common factor of 16 and 100 is 4, and it represents the largest number that can evenly divide both 16 and 100.

To learn more on GCF click:

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A plane traveled 4575 miles with the wind in 7.5 hours and 4275 miles against the wind in the same amount of time. Find the speed of the plane in still air and the
speed of the wind.
The speed of the plane in still air is mph. (Simplify your answer.)
The speed of the wind is mph. (Simplify your answer.)

Answers

Answer:

The speed of the plane in still air is 590 mph

The speed of the wind is 20 mph

Step-by-step explanation:

Let's call:

x = Speed of the plane in still air

y = Speed of the wind

The plane traveled d=4575 miles with the wind in t=7.5 h. The speed calculated with this data corresponds to the sum of the speed of the plane and the speed of the wind, thus:

[tex]\displaystyle x+y=\frac{4575}{7.5}=610[/tex]

x + y = 610        [1]

The plane traveled 4275 miles in 7.5 hours against the wind, thus the speed calculated is x - y:

[tex]\displaystyle x-y=\frac{4275}{7.5}=570[/tex]

x - y = 570        [2]

Adding [1] and [2]:

2x = 610 + 570 = 1180

x = 1180 / 2 = 590

From [1]:

y = 610 - 590 = 20

The speed of the plane in still air is 590 mph

The speed of the wind is 20 mph

What is 1000000×1000000?​

Answers

Answer:

1×10 exponent 12

Step-by-step explanation:

hipe that helped

Answer:

Hi, I'm new can I get marked as Brainliest It would be highly appreciated.

Hope my answer helps :)

lets get into answering your question.

Step-by-step explanation:

1e+12

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Answers

Answer: 22 x 10 = 220

how many times does 12 go into 95

Answers

Answer:7

Step-by-step explanation:

95/12=7.916666666666666666666666666

Answer:

Only 7 but the exact form will be 7[tex]\frac{11\\}{12}[/tex].

Step-by-step explanation:

Hope this helps:)!

Hello! Can anyone please tell me the measurement of t and v ? Any help is gladly appreciated.​

Answers

Answer:

Step-by-step explanation:

is this 8th grade math?

1,000,000 divided by 6500 i will mark brainlest

Answers

Answer:

153.846153846

Step-by-step explanation:

{\__/}

( • . •) want this cookie?

/ >

{\__/}

( • - •)

< \ just kidding its for me

Can you help me please?

Answers

Answer:

53/54 = 106/108

Step-by-step explanation:

You can find the answer because 53/54 * 2/2 = 106/108

2/2 = 1 - right? When you multiply any number by one, it stays the same. That's how you can tell, 53/54 = 106/108.

Answer:

No it cant

Step-by-step explanation:

it would have to be 54/54 to be equal to 1.

Write the equation of a circle with center (7,0) with radius 3

Answers

Answer:

(x-7)^2 + y^2 = 9

Step-by-step explanation:

Equation of a circle:

(x-h)^2 + (y-k)^2 = r^2

(x-7)^2 + (y-0)^2 = 3^2

(x-7)^2 + y^2 = 9

At a Halloween party the goody bags had 1 Mini Snickers,
1 Mini M&M Bag and 1 Mini Twix.
There were 9 guests at the party . What is the total cost of the
candy for 9 guests?
1 Mini Twix: 28¢
1 Mini M&M Bag: 41¢
1 Mini Snickers: 32 ¢

Answers

Answer:

fwnancasca

Step-by-step explanation:

32+9

Does pi go on infinitely?

Answers

Answer:

Yea it does

Step-by-step explanation:

What is the LCM of 72 and 75​

Answers

lcm (72; 75) = 1,800: least common multiple, calculated. The numbers have common prime factors.

What is the value of the expression (0.5)4 ?

Answers

Answer:

2

Step-by-step explanation:

0.5 is the same thing as 1/2 and half of 4 is 2

0.5 * 4 = 2.

You can very easily figure out answers to questions like this one with a calculator.

The temperature fell by 13degrees Fahrenheit today. Write a signed number to represent this temperature change.

Answers

Answer:

20

Step-by-step explanation:

list all the rational roots of f(x)=36x^3-15x^2-17x+6

a. -1/3, 3/4, 1/3

b. -1/3, 2/, -3/4

c. -2/3, 3/4, 1/3

d. -2/3, 1/6, 2/3

Answers

Answer: A on Edge

Step-by-step explanation:

Rachel put $2200 into an account that pays 4.2% simple interest for 5 years.
How much is in the account?

Answers

Answer:

Step-by-step explanation:

4015000

Find an exact value.
Cos(-7pi/12)
A. Sqrt 6 + sqrt 2
B. Sqrt 6 - sqrt 2 / 4
C. Sqrt 2 - sqrt 6
Sqrt 2 - sqrt 6 / 4

Answers

Answer:

[tex]\displaystyle \cos\left(-\frac{7\,\pi}{12}\right) = \frac{\sqrt{2} - \sqrt{6}}{4}[/tex].

Step-by-step explanation:

Convert the angle [tex]\displaystyle \left(-\frac{7\, \pi}{12}\right)[/tex] to degrees:

[tex]\displaystyle \left(-\frac{7\, \pi}{12}\right) = \left(-\frac{7\, \pi}{12}\right) \times \frac{180^\circ}{\pi} = -105^\circ[/tex].

Note, that [tex]\left(-105^\circ\right)[/tex] is the sum of two common angles: [tex]\left(-45^\circ\right)[/tex] and [tex]\left(-60^\circ\right)[/tex].

[tex]\displaystyle \cos\left(-45^\circ\right) = \cos\left(45^\circ\right) = \frac{\sqrt{2}}{2}[/tex].[tex]\displaystyle \cos\left(-60^\circ\right) = \cos\left(60^\circ\right) = \frac{1}{2}[/tex].[tex]\displaystyle \sin\left(-45^\circ\right) = -\sin\left(45^\circ\right) = -\frac{\sqrt{2}}{2}[/tex].[tex]\displaystyle \sin\left(-60^\circ\right) = -\sin\left(60^\circ\right) = -\frac{\sqrt{3}}{2}[/tex].

By the sum-angle identity of cosine:

[tex]\cos(A + B) = \cos(A)\cdot \cos(B) - \sin(A) \cdot \sin(B)[/tex].

Apply the sum formula for cosine to find the exact value of [tex]\cos\left(-105^\circ \right)[/tex].

[tex]\begin{aligned}\cos\left(-105^\circ \right) &= \cos\left(\left(-45^\circ\right) + \left(-60^\circ\right)\right) \\ &= \cos\left(-45^\circ\right) \cdot \cos\left(-60^\circ\right)\right) - \sin\left(-45^\circ\right) \cdot \sin\left(-60^\circ\right)\right) \\ &= \frac{\sqrt{2}}{2} \times \frac{1}{2} - \left(-\frac{\sqrt{2}}{2}\right)\times \left(-\frac{\sqrt{3}}{2}\right) = \frac{\sqrt{2} - \sqrt{6}}{4}\end{aligned}[/tex].

[tex]\displaystyle \left(-\frac{7\, \pi}{12}\right) = \left(-\frac{7\, \pi}{12}\right) \times \frac{180^\circ}{\pi} = -105^\circ[/tex]. In other words, [tex]\displaystyle \left(-\frac{7\, \pi}{12}\right)[/tex] and [tex]\left(-105^\circ\right)[/tex] correspond to the same angle. Therefore, the cosine of [tex]\displaystyle \left(-\frac{7\, \pi}{12}\right)\![/tex] would be equal to the cosine of [tex]\left(-105^\circ\right)\![/tex].

[tex]\displaystyle \cos\left(-\frac{7\,\pi}{12}\right) = \cos\left(-105^\circ\right) = \frac{\sqrt{2} - \sqrt{6}}{4}[/tex].

Can someone help me plz

Answers

Answer:

x=70 y=110 z=30 is all of the variables

3 3
What is the sign of +
?
5 5
cals
Choose 1 answer:
А
Positive
B
Negative
Neither positive nor negative-the sum is zero.

Answers

Answer:

I would help you but that's cheating cause your doing a test.

Step-by-step explanation:

7)Twice a number when decreased by 7 gives 45. Find the number.​

Answers

Isn’t it 26... cuz 26x2 is 52 then subtract 7 which is 45

what is the answer pls tell​

Answers

Answer: Maddie is nine

Step-by-step explanation:

PETER: 9

Kelly: 12

MAX: 14

Ashley: 11

Maddie: 9

the domain of the sine function is:

Answers

the domain of a sine function is from negative to positive infinity. The domain is written as (-∞,∞) in interval notion. It it the same thing as the domain is all real numbers.

hope this helped <3

Answer:

the domain of the function y=sin(x) ) is all real numbers (sine is defined for any angle measure), the range is −1≤y≤1 .

Step-by-step explanation:

see the picture above please help me thank you

Answers

Answer:

C. 0.5

Step-by-step explanation:

If point B is nearest to zero and that far from three, it is going to be 0.5. Not to mention, you can estimate that point is about a half from one.

Answer:

C

Step-by-step explanation:

A - 3.6 is ahead of C, so nope

B - -0.2 is behind A, nope

C - 0.5 works because it seems reasonably distanced (closer to 0 than 3.5)

D - 2 is closer to 3.5, but point b is closer to 0.

Also, if you divide the section between A and C by 7, you can find that 0.5 works because it should be the first section of 0.5

Scale Factor
As a word problem......
A playground is 15 cm wide. After dilation, it is 150 cm wide. What is the scale factor of the dilation?

Answers

Answer:

10

My Logic:

if im correct the scale playground is 15cm wide while the real playground is 150 cm wide. That means that the scale playground is 1/10 of the real one or 1/10 scale.

Hope the helps!

hjhggggggggggggggggggggg

Answers

Answer:

fndskfnzxc.,vnf

Step-by-step explanation:

fnznmsdv,ns.d,

Please help me so I can help my little sister

Answers

Answer: Valentina measured incorrectly.

Step-by-step explanation: 1 feet equals to 12 inches. If you substitute this value for all the other values like 5 ft and 8 inches (Noah's measurement). Firstly, 5 multiplied by 12 is 60, then you would add 8 to it. Caleb already measured the same amount of inches as Noah so we can just leave that one. Same with Mary, 3 * 12 inches = 36 plus 32 which is also 68. Finally, we are left with Valentina in which she has 2 * 12 inches =24 plus 48 which is 72, not 68. Hence, Valentina measured incorrectly.

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