l i k e i s a i d 8th grade math

L I K E I S A I D 8th Grade Math

Answers

Answer 1

Answer:

A.

Step-by-step explanation:

In a direct proporton, the ratio of one quantity to teh other is a constant.

Let's divide each number of crystals by each number of pounds:

7/14 = 1/2

14/28 = 1/2

21/42 = 1/2

28/56 = 1/2

The ratio of crystals to pounds is always 1:2.

This is a proportional relation.

Answer: A.


Related Questions

can y’all help me? it’s gradpoint! will give brainliest answer!!

Answers

Answer:

f(0) = 1

Step-by-step explanation:

when x = 0 then 0 ≤ x < 2 at x = 0 then f(0) = 1

C is the answer

nxidhsidxysbsidyna

Identify the percent of change as an increase or decrease 15 ounces to 5 ounces

Answers

Answer:

it us 67%

Step-by-step explanation:

:))))))) good luck

Isaiah is jogging near his college. he runs south along capitol street for about 0.75 miles and east along h street for about 1.2 miles. he then turns left and runs along florida avenue until he reaches his starting point. how long is his total run to the nearest hundredth of a mile? a triangle. the sides are capitol street, h street, and they hypotenuse is florida avenue. 2.89 miles 3.37 miles 3.67 miles 3.92 miles

Answers

The total distance he travelled to the nearest hundredth of a mile is; B: 3.37 miles

How to work with Pythagoras Theorem?

Let F represents his starting point.

Let C represent his position from where he went to east direction.

Let H represent his position from where he went to left towards Florida Avenue.

We are given that;

FC = 0.75 miles

CH = 1.2 miles

∠FCH = 90°(This can be deduced from the question)

By Pythagoras theorem, we have;

FH = √(0.75² + 1.2²)

FH = 1.42

Thus;

Total distance he covered = FC + CH + FH

Total distance covered = 0.75 + 1.2 + 1.42

Total distance covered = 3.37 miles

Read more about pythagoras theorem at; https://brainly.com/question/7324280

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Please help me.
2 ^ (2x - 3) * .5 ^ (x - 1) = 200

Answers

Answer:

x = 3

Step-by-step explanation:

[tex] {2}^{(2x - 3)} \ast {5}^{(x - 1)} = 200 \\ \\ \implies \: {2}^{(2x - 3)} \ast {5}^{(x - 1)} =8 \ast \: 25 \\ \\\implies \: {2}^{(2x - 3)} \ast {5}^{(x - 1)} = {2}^{3} \ast {5}^{2} [/tex]

Comparing like terms on both sides, we find:

[tex]{2}^{(2x - 3)}= {2}^{3}\: \: or \:\:{5}^{(x - 1)} = {5}^{2} [/tex]

[tex]\implies \:2x - 3 = 3 \: \: or \: \:x - 1 = 2 \\ \\ \implies \:2x = 3 + 3 \: \: or \: \: x = 1 + 2\\ \\ \implies \:2x = 6 \: \: or \: \: x = 3 \\ \\ \implies \:x = \frac{6}{3} \: \: or \: \: x = 3 \\ \\ \implies \:x = 3 \: \: or \: \: x = 3 \\ \\ \implies \huge \:x = 3 [/tex]

Mr. Alexander was traveling home from a business
trip. A taxi driver took him from his hotel room to a
bus station that was 18 miles away. The taxi traveled at an average rate of 60 miles an hour.
Mr. Alexander waited 15 minutes at the bus station
before leaving on a 178-mile bus ride.
Mr. Alexander's trip took a total of 5 hours from the time he left the hotel to the time the bus arrived at its destination. At
what average rate did the bus travel? Explain or show calculations to support the answer.

Answers

Using the relation between velocity, distance and time, it is found that the bus traveled at a rate of 40 miles per hour.

What is the relation between velocity, distance and time?

Velocity is distance divided by time, that is:

[tex]v = \frac{d}{t}[/tex]

The taxi took 18 minutes(60 miles per hour = 1 mile per minute), while he waited for 15 minutes at the station. Thus, the 178-mile bus trip took 4 hours and 27 minutes, so t is given by:

[tex]t = 4 + \frac{27}{60} = 4.45[/tex]

Hence, the velocity is given by:

[tex]v = \frac{d}{t} = \frac{178}{4.45} = 40[/tex]

The bus traveled at a rate of 40 miles per hour.

More can be learned about the relation between velocity, distance and time at https://brainly.com/question/24316569

The cost of pool service includes labor and supplies. labor is 80% of the total cost. the cost of labor for a certain pool service is $220.


what is the total cost of the pool service?


enter your answer in the box

Answers

Answer:

I know im late but the answer is 275 I just took the test on k-12

Step-by-step explanation:

Rewrite x^2 − 2x − 3 = 0 in the form (x − a)2 = b, where a and b are integers, to determine the a and b values.

a = 4 and b = 3
a = 3 and b = 2
a = 2 and b = 1
a = 1 and b = 4

Answers

a=1 and b=4


hope this makes sense :)

Sophia invests money in an account paying simple interest. She invests $70 and no money is added or removed from the investment. After one year, she has $72.80. What is the simple percent interest per year?

Answers

Answer:

72.80= 70(x)^1

x^1 is still x, so leave it at 72.8= 70x
divide 70 from both sides to leave x by itself

x= 1.04
4% interest is payed annually.

Hence, the simple percent interest per year is [tex]4[/tex]%.

What is the simple percent interest?

Simple interest is a quick way of calculating interest. Simple interest is worked out by calculating the percentage amount and multiplying it by the number of periods that the money will be invested for.

Here given that,

Sophia invests money in an account paying simple interest. She invests $[tex]70[/tex] and no money is added or removed from the investment. After one year, she has $[tex]72.80[/tex].

So,

[tex]70x=72.80\\\\x=\frac{72.80}{70}\\\\x=1.04[/tex]

which is [tex]4[/tex]% interest is payed annually.

Hence, the simple percent interest per year is [tex]4[/tex]%.

To know more about the simple percent interest

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You roll a number cube once. What is the theoretical probability that you roll a 3 or 1? Enter your answer as a simplified fraction.

Answers

Answer:

2/6 or 1/3

Step-by-step explanation:

If it was a average 6 sided cube then 1/3 of the numbers are 3 and one.

Verify the following statements and name the property.
A- -6+(+2)
B- 19+(-2)=(-2)+19
C- -7+(-2)

Answers

A- -6-2=2-6
-4=-4
communicative

B-communicative
19-2=2-19
17=17
communicative

C- -7+-2=-9
closure


solution:A- -6+(+2)

[tex] - 6 - 2[/tex]

[tex] = - 4[/tex]

commutative property.

B- 19+(-2)=(-2)+19

[tex] 19 - 2[/tex]

[tex] = 17[/tex]

commutative property.

C- -7+(-2)

[tex] - 7 - 2[/tex]

[tex] = - 9[/tex]

closure property.

A right circular cylinder has a height of 2214 ft and a diameter 225 times its height.

What is the volume of the cylinder?

Enter your answer as a decimal in the box. Use 3.14 for pi and round only your final answer to the nearest hundredth.

Answers

Answer:

v = 3,463,118,874

Step-by-step explanation:

2214 * 225 = 498,510

diameter = 498,510

v = pi(d) * h

v = 3.14(498,510) * 2214

v = 1,564,191 * 2214

v = 3,463,118,874

Brian has reduced his cholesterol level by 10% after his last check up. If his original level was 220, what is his cholesterol level now?

Answers

his cholesterol level is now 198

How do u solve this equation? I’m struggling with it.
2a+3c=61
3a+5c=96

Answers

Answer:

a=17

c=9

Step-by-step explanation:

balls

Answer:

c=9 and a=17

Step-by-step explanation:

1. 2a+3c=61

2. 3a+5c=96

the LCM between 2 and 3 is 6 so

equation 1 *3

3.6a+9c+183

equation 2*2

4. 6a+10c=192

equation 3 - equation 4

5. -c=-9

c=9

substitute c into equation 1 or 2 to find a

3a+5(9)=96

3a+45=96

3a=51

a=17

Find the area of the window.

Answers

Answer:

2512

Step-by-step explanation:

Formula=πr^2/2

(3.14×40×40)/2

=2512

Help me please
The polygons are similar. Find the value of x.

Answers

Answer:

12

Step-by-step explanation:

15/10=1.5

8 times 1.5=12

Given the function f(x)=3-2x^2, find k such that f(k)=-3

Answers

Answer:

k = ±√3

Step-by-step explanation:

Given :

f(x) = 3 - 2x²f(k) = -3

To find the value of k, we need to equate both the functions to find the value of x such that it is equal to the value of k.

⇒ 3 - 2x² = -3⇒-2x² = -6⇒ x² = 3⇒ x = ±√3

We already set a relation before, which is :

x = kTherefore, k = ±√3

Explain how you know 3⁴=9² without calculating the values.​

Answers

Answer:

See below

Step-by-step explanation:

[tex] {3}^{4} = ( {3}^{2} )^{2} = {9}^{2} \\ \\ \implies \: {3}^{4} = {9}^{2}[/tex]

Answer:

think of it like this

Step-by-step explanation:

whenyou have 9 squared you do 9*9 but since we are not able to calculate the values we will just say thereare 2 9's

Now we got 3^4  how many three's multiplied together make 9.. answer is 2 So If you simplify3^4 to 9^2 they are both the same

basically you are multtiplying the left side to get the same number on the right because it tells you they are even

If f(x)= 3x^3+17x^2+22x+8 and x+4 is a factor of f(x), then find ALL the zeros of f(x) algebraically.

Answers

Answer:

The fully factored form of the function f(x) is : (x+5)(x-1)(x-3)

Step-by-step explanation:

Please help,how to do this

Answers

B you bye bye baby love love you bye love love miss bye bye love love miss you love bye bye baby bye love love miss bye bye baby girl bye bye baby bye love you love us bye love bye love love miss bye love you love love bye bye baby love bye baby baby

2 inches 5 inches and 1/4 inches

Answers

Answer:

7 1/4 inches

Step-by-step explanation:

Combining 2 and 5 inches, we get 7 inches.

Combining 7 inches and 1/4 inches, we get 7 1/4 inches.

Answer: 7.25 inches

2+5= 7 inches

1/4=0.25

7+0.25 = 7.25 inches :)

How do I know if a score is good or not on a math map test

Answers

Answer:

on the math and reading test, 240 (reading) and 250 (math) are typical top scores.

Step-by-step explanation:

What is a solution to 3x-26/7=-5/x if x/= 0

Answers

Answer:

Step-by-step explanation:

9/25 of 5kg is equal to ?

Answers

Answer:

1.8 kg

...............

Answer:

1.8 kg

Step-by-step explanation:

please note the " / " symbol means "divided by"

9 / 25 of 5

to work this out, we first do 5 / 25 and then the answer x 9

so 5 / 25 = 0.2

0.2 x 9 = 1.8

1.8kg or 1,800g

Hope this makes sense. If you need further explanation, let me know!

- profparis

If I helped you, a brainliest would be appreciated :D

Which inequality statement describes the two numbers: -22 and a number 47 units to the right of -22?

Answers

Answer:

D) -22 < 25

Step-by-step explanation:

If the number is 47 units to the right, then the number will be larger than -22, because negative values get larger the closer they are to zero.

47 units right from -22 is the same as: -22 + 47, which equals 25.

So, we can conclude that -22 < 25 is the inequality.

hope this helps!

The formula for the volume of a cylinder is V=pi * r^2 * h.
Solve the formula for r

Answers

Answer:

Step-by-step explanation:

Remark

What you want to do is get r on one side of the equal sign and everything else on the other.

Givens

V = pi r^2 h

Solution

Divide by pi

V/pi = pi r^2 h/pi

V/p = r^2 * h

Divide by h

V / h pi = r^2 h / h              Cancel h on the right side. Turn equation around

r^2 =  V / h pi

Take the square root of both sides

√r^2 = √(V / h pi )

r = √ (V / h pi)

Answer r =√ (V / h pi)

To the nearest whole percent, what is the value of a in the relative frequency table for the survey results? a = 27% a = 42% a = 81% a = 88%

Answers

Answer:

a=27%

Step-by-step explanation:

-lukelaws

tell me if it helped

Answer:

A

Step-by-step explanation:

Equals 27 percent

I took the test and go it right

A ship travels 40 miles due east, then adjusts its course 12° southward. After traveling 70 miles in that direction, how far is the
ship from its point of departure?

Answers

The ship movement is an illustration of distance and bearing

The ship is 31.97 miles from its point of departure

The distance from the point of departure?

The given parameters are:

Distance east = 40 miliesDistance southwards = 70 milesAngle = 12 degrees

See attachment for the image of the above parameters

The distance (x) from the point of departure is then calculated using the following cosine function

a^2 = b^2 + c^2 - 2bc * cos(Ф)

So, we have:

x^2 = 40^2 + 70^2 - 2 * 40 * 70 * cos(12)

Evaluate the exponent and the product

x^2 = 6500 - 5477.63

Evaluate the difference

x^2 = 1022.37

Evaluate the exponent

x = 31.97

Hence, the ship is 31.97 miles from its point of departure

Read more about distance and bearing at:

https://brainly.com/question/24142612

Factor out the greatest common factor from the following polynomial.

Answers

Answer:

i pretty sure its   6

                       8x

Step-by-step explanation:

i did the research

8x⁸-24x⁷+64x⁶

Here

Common part is 8 and x⁶

Now

Factor out

8x⁶(x²-3x+8)

GCF=8x⁶

how do i solve this question

Answers

You need to attach the photo we can’t see

Find the unknown angle measurement

Answers

Answer:

65

Step-by-step explanation:

115 + x = 180

x = 180 - 115

x = 65

Answer:

65°

Step-by-step explanation:

A right-angle equals 90°. Two right angles would be a line like shown in the picture.

So, 90 + 90 = 180.

Since we know the whole amount of the 2 angles combined is 180, all we have to do is subtract 115 from 180 to find the missing value.

180 - 115 = 65

Therefore, 65° equals x.

-kiniwih426

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