Mathematics High School

While mining, Jess found a large metal bar that weighed 40 grams. Jess was also able to
determine that the bar contained 30% copper. How many grams of copper are in the metal
bar? Round your answer to the nearest whole number if necessary.
HELP PLEASE!!!!!!!!!

Answers

Answer 1

Answer:

adasd

Step-by-step explanation:

asdawefawefawfe

Answer 2

Answer:

12

Step-by-step explanation:

0.3*40=12

(can I get brainliest please)

Related Questions

help for 10 years good luck

Answers

Answer:

The answer is 8

Step-by-step explanation:

I need the good luck :)

15 points please help me ???? ASAP

Answers

I think it is +0.67
I don’t know tho sorry
Have a nice day tho

Can someone please help me?

Answers

Answer:

2

Step-by-step explanation:

Here is the riddle again for those who did not see it

Answers

375 is the answer :)

Answer:

d=120

p=210

c=360

is this correct?

10 POINTS!! PPLZZZZZZ (MATH) :(stay safe):

Answers

Answer:

1.) 95

2.) 20

3.) 75

Step-by-step explanation:

you subtract the give values by 180 to get the answer

Which answer choice shows the numbers in order from least to greatest?


A. 4.1, 4, 0, -0.5, -6/2, -10

B.-10, -6/2, -0.5, 0, 4, 4.1

C. -0.5, -6/2, -10, 0, 4, 4.1

D. -10, -0.5, -6/2, 0, 4.1, 4

Answers

B, this is because -6/2 = -3


39)
Will weighs three times as much as Brenda. Together, they weigh 240
pounds. How much does each of them weigh

Answers

let

brenda: b

will: 3b

b + 3b = 240

4b = 240

b = 60 lbs (BRENDA)

3b = will

3 (60) = will

180 = WILL

The solution is

The weight of Brenda = 60 pounds

The weight of Will = 180 pounds

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the weight of Brenda be = x

Let the weight of Will be = y

Now , Will weighs three times as much as Brenda

Substituting the values in the equation , we get

y = 3x   be equation (1)

And , the weight of Will + weight of Brenda = 240 pounds

So , x + y = 240   be equation (2)

Substituting the value of y from equation (1) in equation (2) , we get

x + 3x = 240

On simplifying the equation , we get

4x = 240

Divide by 4 on both sides of the equation , we get

x = 60 pounds

So , the weight of Brenda is 60 pounds

Substitute the value of x in equation (1) , we get

y = 3x

y = 3 x 60

y = 180 pounds

So , the weight of Will is 180 pounds

Hence , the weight of Brenda is 60 pounds and weight of Will is 180 pounds

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

Pls help it’s not that hard

Answers

Answer:

what is the question

Step-by-step explanation:

???????1huhuh

I’ll give brainliest if correct plz

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Answer:

Natalie.....

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HELP ME SOMEBODY PLSS

Answers

Answer:

-6/8

Step-by-step explanation:

The rate of change is the same as the slope (I don't know if you have learned that term yet), but basically its the change in y's over the change in x's. to find this out, all you have to do is count from the point on the graph that is the farthest right (in this case, (6,1)), up to the y coordinate of the point farthest to the left (-2, 7) which is 6, and then count the number of spaces between the x coordinates, which is 8. put the rise (up and down count) over the run (horizontal count) in a fraction form, which gives you 6/8, and then notice how the line is pointing towards the bottom RIGHT hand corner making the line negative, so you need to make the rate of change negative, giving you the final answer of -6/8.  

Find the volume of a cube with an edge length of 4 mm.

Answers

If I’m correct it should be V=6.4×10-8m³

Pls answer this is urgent

Answers

Answer:

9 hours

Step-by-step explanation:

12 times 9 equals 108

108 - 9 equals 99

Please helpppp !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

6.3

Step-by-step explanation:

7squared - 3squared

49-9= 40

square root of 40 = 6.3

Which object traveled at a faster speed?
object A: 65 miles in 13 minutes
object B: 125 miles in 25 minutes
( show your work)
plss helppp

Answers

Answer:

I believe it is object B

2. 114 out of 150 customers at a
bank said that they prefer to use
ATMs rather than going to a live
teller. What is the sample proportion
of bank customers who prefer to use
ATMs?
Answer choices:
0.68
0.72
0.76
0.80

Answers

Answer: lowkey gonna goes by my math and say 0.76 because I divided 114 by 150 and got 0.76

I need help with this

Answers

Answer:

b = -12

Step-by-step explanation:

First isolate b by subtracting 2 from both sides: b/4 = -3

then multiply both sides by 4 to find b: b = -12

Answer:

b= -12

Step-by-step explanation:

b/4 + 2 = -1

Subtract 2 from both sides

b/4 = -3

Multiply both sides by 4

b= -12

It's an inverse operation thing.

What equation is a proportion?

A. 1/3 = 1/4
B. 3/4 = 6/9
C. 5/8= 20/32
D 7/9 = 21/28

Answers

Answer:

c. 5/8= 20/32

Step-by-step explanation:

because 5*4=20 and 8*4=32

Sandy has 27 roses, 9 daisies, and 45 tulips. She wants to arrange all the flowers in bouquets. Each bouquet has the same number of flowers and the same type of flower. What is the greatest number of flowers that could be in a bouquet?

Answers

Answer:

The greatest number of flowers that could be in a bouquet is 9 flowers.

Each bouquet would contain: 3 roses, 1 daise and 5 tulips

Step-by-step explanation:

Sandy has 27 roses, 9 daisies, and 45 tulips. She wants to arrange all the flowers in bouquets. Each bouquet has the same number of flowers and the same type of flower. What is the greatest number of flowers that could be in a bouquet?

We solve the above question using Greatest Common Factor method.

We find the factors of 27, 9 and 45

The greatest common factor is the highest factor common to these 3 number

Hence:

The factors of 9 are: 1, 3, 9

The factors of 27 are: 1, 3, 9, 27

The factors of 45 are: 1, 3, 5, 9, 15, 45

Then the greatest common factor is 9.

Therefore, the greatest number of flowers that could be in a bouquet is 9 flowers

Each bouquet would contain

For 27 roses = 27/9 bouquet = 3 roses

For 9 daisies = 9 daisies/9 bouquet = 1 daisies

For 45 tulips = 45 tulips/9 bouquet = 5 tulips

Given d(x) = 5x - 12, what is the value of d(-4)?
-32
0-3
0-12
3

Answers

Answer:

d(-4) = -32

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

d(x) = 5x - 12

d(-4) is x = -4

Step 2: Evaluate

Substitute in x:                   d(-4) = 5(-4) - 12Multiply:                              d(-4) = -20 - 12Subtract:                             d(-4) = -32

The Bootle Corporation paid Leslie a quarterly dividend check for $828. Leslie owns 450 shares of Bootle. What was the quarterly dividend for one share of Bootle?

Answers

Quarterly dividend for 450 shares = 828
Quarterly dividend for 1 share = 828/450 =1.84

Hoped I help! Mark me brainly if I’m correct or would help a lot! Have a nice day!:)

WHOEVER ANSWERS IT WILL GET BRAINST DUE IN 5 MINUTES!!!!!

Answers

Answer:

Its b

Step-by-step explanation:

C because it x is an exponent making it an exponential function

the legnth of a rectangle is 4 times the width. the primiter is 120 cm. find the width and the length of the rectangle.​

Answers

perimeter rectangle = 120 cm

let width be = x
thus the length will be = 4x

4x + 4x + x + x = 120
10x = 120

thus, x = 12 cm

so , width = x = 12 cm

length = 4x = 4(12) = 48 cm

i am sorry if my answer is wrong .

Joy wants to build a rectangular garden he plans to use a side of a river from one side of the garden so he will not place fencing along the side of the garden he has 92 yards of fencing material what is the maximum area that he will be able to enclosed

Answers

Answer:

I think the greatest area is 1050 yards.

Priya has a recipe for banana bread. She uses 7/1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour. Which of these equations represents the relationship between b and f?

Answers

Answer:

5b=2f

Step-by-step explanation:

Priya uses [tex]7\dfrac{1}{2}[/tex] cups of floor to make 3 loaves of banana bread.

Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour.

To find the relation between b and f, the steps are as follows :

[tex]\dfrac{\text{cups of flour}}{\text{loaves of banana bread}}=\dfrac{7 \dfrac{1}{2}}{3}\\\\=\dfrac{\dfrac{15}{2}}{3}\\\\=\dfrac{15}{2}\times \dfrac{1}{3}\\\\=\dfrac{5}{2}[/tex]

It means,

[tex]\dfrac{f}{b}=\dfrac{5}{2}\\\\5b=2f[/tex]

So, the relationship between b and f is "5b=2f".

Answer:

5b = 12f

Step-by-step explanation:

Mike drove 100 miles in a rental car and was charged $58.00. Jane rented the same car after Mike had rented it and was charged $65.00 for 170 miles. Write an equation to represent y, the total rental cost, in terms of x, the number of miles driven.

Answers

Answer:

y= 48 + 0.1x

x= miles driven

Step-by-step explanation:

We need to calculate the fixed and variable cost (per mile) of renting a car. To do that, we will use the high-low method:

Variable cost per unit= (Highest activity cost - Lowest activity cost)/ (Highest activity units - Lowest activity units)

Variable cost per unit= (65 - 58) / (170 - 100)

Variable cost per unit= $0.1 per mile

Fixed costs= Highest activity cost - (Variable cost per unit * HAU)

Fixed costs= 65 - (0.1*170)

Fixed costs= $48

Fixed costs= LAC - (Variable cost per unit* LAU)

Fixed costs= 58 - (0.1*100)

Fixed costs= $48

y= 48 + 0.1x

x= miles driven

y=mx+
finish the equation
Its one of the options
M
B
F
C

Answers

Answer:

b

Step-by-step explanation:

y = mx + b

m is the slope and b is the y-intercept

Which function is best represented by the graph?

Answers

The slope is negative since the line is going downwards. Y intercept: when x = 0 and looking on the graph it’s (0,-2)

Solution: B. y = -2x - 2

when lines are the same distance apart over their lengths they are .

Answers

Parallel lines remain the same distance apart over their entire length. No matter how far you extend them, they will never meet.

6.25 ÷ 0.025 find and tell me fast and I will mark you as the brainalest
​

Answers

Answer:

6.25 divided by 0.025 is 250

A peqch pie is made with 13 peaches, which are evenly distributed throughout the pie. If Joe ate one slice that contained exactly 5 peaches, what was the angle measure of the slice to the nearest tenth of a degree?

Answers

Answer:

138.5°

Step-by-step explanation:

Since the peach pie is a circle, we have a total angle of 360°.

We need to determine what fraction of the total pie of 13 peaches is the 5 peaches contained in Joe's slice.

This is number of peaches in Joe's slice/total number of peaches in pie = 5/13. To find the angle Joe's slice measures, we multiply 5/13 by 360°.

So, 5/13 × 360°

= 0.3846 × 360°

= 138.46°

≅ 138.5° to the nearest tenth of a degree

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