solve the questions below

Answer:

# red marbles = 25

# blue marbles = 7

Step-by-step explanation:

r + b = 32

r = 4 + 3b

substitute '4 + 3b' for 'r' in the 1st equation

4 + 3b + b = 32

4 + 4b = 32

4b = 28

b = 7

red = 32 - 7

r = 25

Answer:

Table C

Step-by-step explanation:

Divide each y value by the corresponding x value for all given ordered pairs. All 3 divisions for each table must equal 1.5.

Start with Table A:

A:

7.5/5 = 1.5    Yes

19.5/ 13 = 1.5     Yes

33/23 = 1.4347...    No

Move on to Table B:

B:

9.5/8 = 1.1875   No

Move on to Table C:

C:

12/8 = 1.5   Yes

19.5/13 = 1.5   Yes

27/18 = 1.5   Yes

Answer: Table C

Answer:

Step-by-step explanation:

Answer:

50 pencils    

Step-by-step explanation:

150 ÷ 3 = 50

I hope this  helps! Have a blessed day!

Answer:

1. $335.26

2. $852.60

3. Firm A: $193.86

Firm B: $192.08

4. $1762.36

5. $662.40

Answer:

1.05

Step-by-step explanation:

The rate of change of the cost, in dollars, with respect to the number of minutes purchased is 1.05 and this can be determined by differentiating the given function.

Given :

In order to determine the rate of change of the cost, in dollars, with respect to the number of minutes purchased, differentiate the given function with respect to 'x'.

y = 5.45 + 1.05(x + 7)

y = 5.45 + 1.05x + 7.35

y = 12.8 + 1.05x

Now, differentiate the above equation with respect to 'x'.

[tex]\dfrac{dy}{dx} = 0 + 1.05[/tex]

So, the rate of change of the cost, in dollars, with respect to the number of minutes purchased is 1.05.

For more information, refer to the link given below:

https://brainly.com/question/21835898

Answer:

2006 years old.

Step-by-step explanation:

If it had 50% of its carbon-14 it would be 5730 years old.

Since it has 65% left it is younger than 5730 years.

So it is (1 - 0.65) * 5730

= 2005.5 years old.

Answer:

poopppppppppppppppppppppeeeee

Answer:

bababoy

Step-by-step explanation:

Answer:

a circle's area is measured in square units Finding the area of a square is easy length times width. A circle though has only a diameter or distance across.

Step-by-step explanation:

Answer:

let, the ratio be 5x & 2x

now,

5x+2x=665

7x=665

x=95

again,

5x=5×95=475

2x=2×95=190

hope it helps.

Answer:

4 dozen

Step-by-step explanation:

Answer:

[tex]D. \ \ \frac{-1}{2x(x-2)}[/tex]

Step-by-step explanation:

[tex]\frac{-1}{2x^2-4x}[/tex]

Taking 2x common from denominator

[tex]\frac{-1}{2x(x-2) }[/tex]

Answer:

10 to the power of 2

Step-by-step explanation:

Answer: 10 to the power of 2 or 10^2

Step-by-step explanation: 10 x 10 equals 100. I used the number ten twice to get 100

Answer: 112 cups

Step-by-step explanation:

16x

16(7)

112 cups

Answer:

10.3 years

Step-by-step explanation:

The Rule of 72 is a rule used to determine the period of time it would take an investment to double at a given fixed annual rate of return. The rule of 72 helps investors to have an estimate of how long an initial investment would double. The rule of 72 is given by the formula:

t = 72 / r

where r is the annual rate of return and t is the approximate time in years required for the investment to double.

t = 72 / r

Given that r = 7%

t = 72 / r = 72 / 7 = 10.3 years

Therefore it would take 10.3 years for an investment of $5,000 earning 7% annually to double to about $10,000

Answer:

63 days

Step-by-step explanation:

There are seven days would it take for 3 cows.

A mathematical assessment of two numbers is called a proportion. If two sets of provided numbers rise or fall in the same relation, then the ratios are said to be directly proportional to each other.

Let the required number of days would be x

We have to determine the number of days would it take for 3 cows

As per the given situation, we can write the proportion would be as:

9 cows : 21 days = 3 cows : x days

9/21 = 3/x

Apply the cross-multiplication operation,

9x = 21 × 3

9x = 63

x = 63/9

Apply the division operation, and wet

x = 7

Therefore, the required number of days would be 7 days.

Learn more about the proportion here:

brainly.com/question/1504221

#SPJ2

Answer:

189/45 or 4 1/5

Step-by-step explanation:

1) turn 5 2/5 to improper fraction as 27/5

2) multiply 7       27        189

                 ---  x   ---   =   -----

                  9        5         45

3) simplify if need which would be 4 1/5

Answer:

Center and Radius

Rewrite in standard form to find the center

(k,h)

and radius r

.Center:

(3,5)

Radius:

2

Complete Question:

A closed box has a square base with side length L feet and height h feet. Given that the volume of the box is 39 cubic feet, express the surface area of the box in terms of L only.

Answer:

[tex]A = \frac{156}{L} + 2L^2[/tex]

Step-by-step explanation:

Given

[tex]Volume = 39ft^3[/tex]

Required

Express the surface area in terms of L

Because the box has a square base:

The volume is:

[tex]Volume = Base\ Area * Height[/tex]

Where

[tex]Base\ Area = L * L[/tex]

So, we have:

[tex]Volume = L * L * H[/tex]

Substitute 39 for Volume

[tex]39= L * L * H[/tex]

[tex]39= L^2 * H[/tex]

Make H the subject

[tex]H = \frac{39}{L^2}[/tex]

The surface area (A) of a box with square base is:

[tex]A = 2(LH + LH + L^2)[/tex]

[tex]A = 2(2LH + L^2)[/tex]

Open bracket

[tex]A = 4LH + 2L^2[/tex]

Substitute [tex]\frac{39}{L^2}[/tex] for H

[tex]A = 4L * \frac{39}{L^2} + 2L^2[/tex]

[tex]A = \frac{4L *39}{L^2} + 2L^2[/tex]

[tex]A = \frac{4*39}{L} + 2L^2[/tex]

[tex]A = \frac{156}{L} + 2L^2[/tex]

Answer:

Step-by-step explanation:

Given expression:

Value of expression when x = 3 and y = 2:

Answer:

5x + 1/2 y² when x = 3 and y = 2

[tex]→\boxed{5x + \frac{1}{2} {y}^{2} } = 5(3) + \frac{1}{2} {(2)}^{2} \\ = 5(3) + \frac{1}{2} (4) \\ = (15 + 2) \\ = \boxed{ 17}✓[/tex]

Answer:

The answer for miles driven is 100 for the first blank, 400 for the second blank, and 600 for the third blank. As you can see, that is how the pattern goes. The blank for Gallons of gas one is 12, and the blank for gallons of gas two is 20.

Step-by-step explanation:

Answer:

I suggest looking at my attachment. This will help with your question and answers to future assignments in your class.

Step-by-step explanation:

Hope this helps! Please vote me as Brainliest. Let me know if you need more of an explanation. Remember, cheating is never the answer. Try your best before you seek answers. Hope it's not too late. Good luck with whatever you are doing! Have an amazing day!

Read this article:

Answer:

-75/16

Step-by-step explanation:

Answer:

The answer to the question provided is -12.

Is the question you jotted down suppose to look like this: 7 1/2 ÷ (4 1/2 - 5 1/8) ?

Answer:

14÷7

Step-by-step explanation:

49÷7 is 7 so if (35÷7)+(___÷7) equals 7 then it would be 14÷7=2 and 5 + 2 is 7

Answer:

138,800 points

I hope this aswered your question

Step-by-step explanation:

200x19= 3,800+(7,500x19)= 138,800

Answer:

The Vertical Line Test is used to determine whether the graph of an equation is  a function of y in terms of x.

Step-by-step explanation:

One can conduct the vertical line test can to determine whether a graph represents a function.  The reason for this is that a function has one output value for each input value. Therefore, a vertical line includes all points with a particular x value. The y value of a point where a vertical line intersects a graph represents an output for that input x value.

Answer:

D

Step-by-step explanation:

[tex]\frac{1}{2} = \frac{7}{14} \\[/tex]

[tex]\frac{1}{7} = \frac{2}{14}[/tex]

[tex]\frac{7}{14} + \frac{2}{14} = \frac{9}{14}[/tex]

5+2=7

[tex]7 + \frac{9}{14} = 7 \frac{9}{14}[/tex]