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3 years ago

Which number produces a rational number when multiplied by 0.25?

Mathematics

2 answers:

laiz [17]3 years ago

7 0

The number is 2/9 hope that helps!

LenKa [72]3 years ago

3 0

Answer:

2.22 is a rational number because it can be written as the quoitent of two integers 222/100.

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There is triangle ABC triangle XYZ is similar to ABC scale factor 1/4

Agata [3.3K]

Answer:

The side that is labeled as 7 is 28 the side that is labeled as 5 shoud be 20 the side that is labeled as 4 should be 16

Step-by-step explanation:

Sorry I cant take a screen shot with my computer but here is the explanation it says that the scale factor is 1/4 so I just did 1/4 ÷ 7,5,and 4

6 0

3 years ago

Joanne cannot decide which of two washing machines to buy. The selling price of each is $720. The first is marked down by 50%.

Archy [21]

Answer:

More expensive

Step-by-step explanation:

FIRST WASHING MACHINE PRICE - $360

SECOND WASHING MACHINE PRICE - MUST NOT BE CHEAPER

$720 x 30% = $216

The additional percentage must make the washing machine more expensive than the first one.

4 0

3 years ago

Does the table show a direct proportional relationship? If so, what is the constant of proportionality?

lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality ( $k$ ) is described by the following expression:

$k = \frac{y}{x}$ (1)

Where:

$x$ - Input.

$y$ - Output.

If we know that $(x_{1}, y_{1}) = (13, 45.5)$ , $(x_{2}, y_{2}) = (14, 49)$ and $(x_{3}, y_{3}) = (15, 52.5)$ , then the constants of proportionalities of each ordered pair are, respectively:

$k_{1} = \frac{y_{1}}{x_{1}}$

$k_{1} = \frac{45.5}{13}$

$k_{1} = \frac{7}{2}$

$k_{2} = \frac{y_2}{x_2}$

$k_{2} = \frac{49}{14}$

$k_{2} = \frac{7}{2}$

$k_{3} = \frac{y_{3}}{x_{3}}$

$k_{3} = \frac{52.5}{15}$

$k_{3} = \frac{7}{2}$

Since $k_{1} = k_{2} = k_{3}$ , the constant of proportionality is 3.5.

8 0

3 years ago

You babysit 15 hours each week for $6.00 per hour. You also earn $25.00 each

alexdok [17]

Answer:

$115

Step-by-step explanation:

Although it did say to complete the equation I put the answer just in case.

So, in order to calculate the total weekly income, I will use x which will equal the number of hours. The equation needed to calculate the weekly total income will be:

w = 6x + 25

Because we know the number of hours is 15, we can plug 15 in x:

w = 6(15) + 25

w=90+25

w=115

So, the total weekly income will be $115(don't forget to put the unit! In this case it will be the dollar sign).

4 0

3 years ago

Read 2 more answers

PLEASE HELP! Last question on my quiz

ozzi

I’m srry h can’t really see the letters :/

5 0

3 years ago