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1 year ago

Which equation represents a proportional relationship that has a constant proportionality equal to 0.7

Mathematics

1 answer:

Morgarella [4.7K]1 year ago

8 0

Answer:

first option

Step-by-step explanation:

The equation representing a proportional relationship is

y = kx ← k is the constant of proportion

Here k = 0.7, thus

y = 0.7x ← is the required equation

Given

$\frac{y}{x}$ = $\frac{7}{10}$ ( cross- multiply )

10y = 7x ( divide both sides by 10 )

y = $\frac{7}{10}$ x = 0.7 x ← the required equation

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In Martian Poker, the game is played with 8 cards drawn from a 52 card deck.

WITCHER [35]

Step-by-step explanation:

In Martian Poker, the game is played with 8 cards drawn from a 52 card deck.

What is the probability of a Martian drawing “two trips and a pair". They get 2

three of a kinds and a pair.

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1 year ago

Compare a pay increase to the inflation rate. Assume that the inflation rate for the past year was 4 percent. You are worried th

Hoochie [10]

The New pay in current year is = $ 2225

The old pay in the last year was = $ 2176

percentage (%) increase formula = (new value- old value ) *100 / old value

which becomes,,

$\frac{2225-2176}{2176} *100$

which equals to 2.3% .

Hence, the average net pay per month increased is 2.3% .

8 0

2 years ago

Read 2 more answers

What single decimal multiplier would you use to increase by 15% followed by a 14% increase?

Yuliya22 [10]

Answer:

The single decimal multiplier that I will use to increase by 15% followed by a 14% increase is 1.311

Step-by-step explanation:

Let

x ----> the number

Remember that

$100\%+15\%=115\%=115/100=1.15$

$100\%+14\%=114\%=114/100=1.14$

we know that

Increase a number by 15% followed by a 14% increase is the same that multiply the number for (1.15)(1.14)

$x(1.15)(1.14)=1.311x$

therefore

The single decimal multiplier that I will use to increase by 15% followed by a 14% increase is 1.311

3 0

1 year ago

Landry earned $2,300 over the summer and decided to invest it in an account that earns 4% annual compound interest. If Landry do

solniwko [45]

Answer:

Landry will have $5039.58

Step-by-step explanation:

compound interest formula: amount = p(1 + \frac{r}{n})^{nt}

p= principal ($2,300)

r= interest rate as a decimal (4% = 0.04)

n= number of times the principal is compounded per year (annually = once per year so 1 time per year)

t= time in years (20 years)

new equation: amount = 2300(1+\frac{0.04}{1} )^{1*20}

That equation equals $2,739.58 which you add to the principal.

$2,739.58 + $2,300 = $5039.58

hope this helps :) the equations aren't showing up right :(

6 0

2 years ago

Read 2 more answers

Joe bought a box of laundry detergent that contains 195 scoops. Each load of laundry uses 2 1/2 scoops. How many loads of laundr

Crank

Answer:

a) Number of laundry he can do with this box = 78 laundries.

b) Price he paying for each load = 0.256 $

Explanation:

Total scoop contained in detergent box = 195 scoops.

Scoops used by each load of laundry = $2\frac{1}{2} =\frac{2*2+1}{2} =\frac{5}{2}$ scoops = 2.5 scoops

Number of laundry he can do with this box = 195/2.5 = 78 laundries.

Price of detergent box = 19.99 $

Price he paying for each load = Total price/ Number of loads

= 19.99/78

= 0.256 $

5 0

1 year ago