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RSB [31]
3 years ago
5

Select the correct answer. Which table shows a proportional relationship between x and y?

Mathematics
2 answers:
asambeis [7]3 years ago
7 0

Answer:

<h2>C.</h2>

Step-by-step explanation:

If x and y are proportional then the ratio y/x is constant.

A.\\\\\dfrac{4}{2}=2,\ \dfrac{6}{3}=2,\ \dfrac{9}{4}\neq2\\\\B.\\\\\dfrac{4}{3},\ \dfrac{16}{9}\neq\dfrac{4}{3}\\\\C.\\\\\dfrac{12}{4}=3,\ \dfrac{15}{5}=3,\ \dfrac{18}{6}=3\ \qquad\bold{CORRECT}\\\\D.\\\\\dfrac{4}{1}=4,\ \dfrac{8}{2}=4,\ \dfrac{15}{3}=5\neq4

wolverine [178]3 years ago
3 0

Answer: The answer would be choice C because there is a constant rate of change of 3 :)

Step-by-step explanation:

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Beth will borrow $10,000 which earns 4% compound interest and she will repay that amount in 20 years. How much interest was earn
Serggg [28]

Answer:

I=\$11,911.23

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the amount that she will repay  

P is the amount borrowed  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=20\ years\\ P=\$10,000\\ r=0.04\\n=1  

substitute in the formula above  

A=10,000(1+\frac{0.04}{1})^{1*20}  

A=10,000(1.04)^{20}  

A=\$21,911.23  

Find out the interest

I=A-P

substitute the values

I=\$21,911.23-\$10,000=\$11,911.23

5 0
3 years ago
Y=\sqrt(-x^(2)+2x) . tìm giá trị lớn nhất của hàm số
Jlenok [28]

Answer:

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3 0
2 years ago
What is 3/4 + 5 ? explain how you did it?
Goshia [24]

Answer:

5and 3/4

Step-by-step explanation:

Make 5 a fraction to 5/1

3 0
3 years ago
Read 2 more answers
Yoko's penny bank is 2/5 full. After she adds 320 pennies, it is 2/3 full. How many pennies can Yoko's bank hold?
sergejj [24]

Answer: 1200 pennies

Step-by-step explanation:

Let x be the number of pennies Yoko's bank can hold.

We can set up an equation representing the information given.

\frac{2x}{5} + 320 = \frac{2x}{3}

We can multiply both sides by 15:

6x + 4800 = 10x

Combine like terms:

4x = 4800

Divide both sides by 4:

x = 1200

6 0
2 years ago
Read 2 more answers
a brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches. the b
Alex

The mass of brick is 2478 gram.

<h3>What is a rectangular prism?</h3>

A rectangular prism has a total of 6 faces, 12 sides, and eight vertices. Like a cuboid, it has three dimensions- the base width, the height, and the length. The top and base of the rectangular prism are rectangular in shape. The pairs of opposite faces of a rectangular prism are identical or congruent.

A brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches.

The volume of rectangular prism = length×width×height

                                                        = 8×3.5×2

                                                        = 56

Thus volume of brick is 56 cubic inches.

Convert inches to centimeter

1 inch = 2.54 centimeter

Therefore,

56 cubic inches = 56 x 2.54 x 2.54 x 2.54 cubic centimeter

56 cubic inches = 917.676 cubic centimeter

Thus, we get,

volume of a rectangular prism = 917.676 cubic centimeter

The brick has a density of 2.7 grams per cubic centimeter

Density = 2.7 grams

The mass of brick is given by formula = density × volume

\Rightarrow                                                            = 2.7 × 917.676

\Rightarrow                                                            = 2477.72

\Rightarrow                                                            ≅ 2478  

Thus mass of brick is 2478 gram.

To read more about:

To learn more about rectangular prism from the given link

brainly.com/question/14446675

#SPJ4

6 0
2 years ago
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