The mass of the blue copper sulfate crystal is two-thirds the mass of the red fluorite crystal. Write an equation you can use to find the mass m (in grams)of the blue copper sulfate crystal.

plz :(

Answer:

If we let x be the number of ticket sold and y be the amount in dollars donated then, the equation would be,

                                     x = 2y

We can check our answer by substituting the given,

                                     10 = 2(5)

                                      10 = 10

The equation can also be written as,

                                    y = (1/2)x

Student B is correct.  

Answer:

Sample Response/Explanation: The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 12(10).

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Volume= Length x Width x Height

8x2x5= 80

If you want to break it up into smaller pieces ....

5x2=10 or 5+5=10    

10x8= 80 or 10+10+10+10+10+10+10+10

hope this helps! :)

Answer:

Step-by-step explanation:

Answer:

points-=(0,2)(-3,4)(3,0) slope=-2/3

Step-by-step explanation:

Answer:

-2/3 or -0.6667

Step-by-step explanation:

Slope=rise/run or (y2-y1)/(x2-x1)

Your first point is (-3,4) and another can be (3,0)

plug this into the equation

Answer:

Discount Percent = 58.33 %

Discount Amount = $ 7.00

Step-by-step explanation:

Answer:

41.66666667%

Step-by-step explanation:

Answer:

Scale factor is used to find the coordinates depending upon whether the scale factor value is less than one or more than one.

Step-by-step explanation:

A scale factor is a number which scales, or increases, some amount. In the condition y = Cx, C is the scale factor for x. C is likewise the coefficient of x, and might be known as the steady of proportionality of y to x.

An object is augmented if the scale factor is more noteworthy than 1. An article is decreased if the scale factor is a division, under 1. To discover the expanded picture, we initially should know the directions of our unique picture. At that point we basically increase the arrange by the scale factor to discover the widened picture.

Answer:

FH

Step-by-step explanation:

The diameter is full lentgh of a circle.

Fh is the only line that goes completely across so thats your answer

Answer: G-10 square feet

Step -by-step explanation

Round Dining Table Size Chart, Inches: Table Size, dia Number of persons Room needed 24'' 1-2 8' x 8' 30'' 2-4 9' x 9' 36'' 3-4 10' x 10' 42'' 4-5 11' x 11' 4 more rows .

Answer:

the answer is the first answer, (-1, -2), (2, -2)

Step-by-step explanation:

Answer:

its good :)

Step-by-step explanation:

a. it is not, because dividing 1.875 by 500 would not equal 0.015.

b. each piece of paper would equal 0.00375.

Answer:

colder then warmer

Step-by-step explanation:

Answer:

The answer is- 40

Step-by-step explanation:

( :

The area of the pentagon represented here is 40 units².

Area of a two dimensional shape is the total region which is bounded by the object's shape.

Given that the coordinates of the vertices of the pentagon given are A(0, 0), B(3, 5), C(3, 8), D(8, 5), and E(8, 0).

We have to find the area.

This pentagon can be divided in to triangle CBD and trapezium ABDE.

Find the area of each to find the total area of the pentagon.

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × BD × CB

Using the distance formula,

BD = [tex]\sqrt{(8-3)^2+(5-5)^2}[/tex] = 5

CB = [tex]\sqrt{(3-3)^2+(5-8)^2}[/tex] = 3

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × 5 × 3 = 7.5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (AE + BD) × DE

Using the distance formula,

AE = 8, BD = 5 and DE = 5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (8 + 5)5 = 32.5

Total area of the pentagon = 7.5 + 32.5 = 40 units²

Hence the total area is 40 units².

Learn more about Area here :

https://brainly.com/question/22590672

#SPJ3

Answer:

1) S

2) M

3) I

4) E

5) A

6) L

thats what i got but i dont know y it isnt a proper word.

Answer:

1) S

2) M

3) I

4) E

5) A

6) L

Step-by-step explanation:

Answer:

0.78 - (1 - 0.34)

Step-by-step explanation:

i think this is correct, im so sorry if it isnt

Answer: 0.78-(1-0.34)

Step-by-step explanation:

0.78 must be on the outside of the parenthesis'

We need to find out the length of Sergei's rod, so we need to subtract it by one

1-0.34=0.66

Now do 0.78-0.66

0.12

That is how you know you are finding out the difference in length.

Answer:

Mathematics at Louisiana State University for their support in the ... Lesson 1: Positive and Negative Numbers on the Number Line—Opposite ... from Grade 5 of plotting points in the first quadrant and transition to locating ... Find and position integers and other rational numbers on a horizontal or ... tomorrow's water level.

Step-by-step explanation:

Answer: Yes it is

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

$1.77

Step-by-step explanation:

10-(5.25+2.98)

=10-8.23

=1.77

Hope this helps :)

Answer:

$1.77

Step-by-step explanation:

Answer:

y=-5x

Step-by-step explanation:

m is the slope (rise/run)

b is the y-intercept!!!

Answer:

y=-5x

I'm assuming this is right because I got the same thing as the other guy and you all thanked him/her XD

Answer:

Step-by-step explanation:

x = number of pushups he did

Answer:

the number of pushups done by Noah

Step-by-step explanation:

if Noah did x amount of pushups then Diego did twice as many, which is 2x therefore in this equation x represents the number of pushups done by Noah

Answer:

y=4

Step-by-step explanation:

Let's solve your equation step-by-step.

5y−14=2y−2

Step 1: Subtract 2y from both sides.

5y−14−2y=2y−2−2y

3y−14=−2

Step 2: Add 14 to both sides.

3y−14+14=−2+14

3y=12

Step 3: Divide both sides by 3.

3y/3=12/3

y=4

Answer:

5y + -14 = 2y + -2

-14 + 5y = 2y + -2

-14 + 5y = -2 + 2y

-14 + 5y = -2 + 2y

-14 + 5y + -2y = -2 + 2y + -2y

5y + -2y = 3y

-14 + 3y = -2 + 2y + -2y

2y + -2y = 0

-14 + 3y = -2 + 0

-14 + 3y = -2

-14 + 14 + 3y = -2 + 14

 -14 + 14 = 0

0 + 3y = -2 + 14

3y = -2 + 14

-2 + 14 = 12

3y = 12

y = 4

Answer:

b.cost of party

c=20f

Step-by-step explanation:

so we know the equation we have to use is c=20f

for part 2 we have to find out how much it's going to cost hank if 50 people attend his party;

so we know that 'c' is our unknown variable; now we write the equation filling in the 'blanks' with what we know-

c=20*50

now we multiply **remember that when you have a number and a letter right next to each other that they're being multiplied**

20*50

=1000

so hank will be spending $1000

good luck :)

hopefully, this helps

sorry i couldn't answer the last question

have a nice day !!

Answer: E. Subtract 2x

Step-by-step explanation:

Subtracting 2x would remove a bit from both equations, giving us 5x - 9 = 12. This would make it easier now that we only have one number on a side.

Hope this helps!

Answer:

Part A:

Part B: The hardware store is cheaper.

Step-by-step explanation:

Part A:

At the hardware store, the ladder is 350 plus 6% tax. To solve this you would multiply 350 by 1.06 tax. Then you would get 371. Online, the ladder is 320 plus 6% tax and 5% shipping. To solve this you would multiply 320 by 1.11 (tax and shipping combined). Then you would get 355.20.

Part B:

To solve the cost of the ladder at the hardware store, you would need to first multiply 350 by 0.9 for the 10% discount. That would get you 315. Then add the 6% tax to get 333.90. To solve for the online ladder, you would need to multiply 320 by 1.06 (6%), and get an answer of 339.20. This means that the hardware store is cheaper.

Answer

Step-by-step explanation: How to find the percentage from the total value?

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

We need to Write the percent as a fraction in simplest form

16.24%

So, we can rewrite it as;

16.24 / 100

16 and 24/100 or 16 6/25

So the percent as a fraction is 16 6/25

We are given that;

Cost of ladder= $320

Sales tax of shipping and handling is 5% and 6%

Off on hardware= 10%

Now,

PART A:

At the online store, the ladder costs $320, and the sales tax is 6% of $320, which is:

$320 x 0.06 = $19.20

The shipping and handling is 5% of $320, which is:

$320 x 0.05 = $16

So the total cost of buying the ladder online is:

$320 + $19.20 + $16 = $355.20

At the physical store, the ladder costs $350, and the sales tax is 6% of $350, which is:

$350 x 0.06 = $21

So the total cost of buying the ladder at the physical store is:

$350 + $21 = $371

Therefore, buying the ladder online would be cheaper, with a total cost of $355.20.

PART B:

If the hardware store is offering 10% off the price of the ladder, the cost of the ladder would be:

$350 x 0.1 = $35 off

$350 - $35 = $315

So the total cost of buying the ladder at the physical store with the discount would be:

$315 + $18.90 (6% sales tax) = $333.90

If the online store is offering free shipping and handling, the total cost of buying the ladder online would be the same as the cost of the ladder:

$320 + $19.20 (6% sales tax) = $339.20