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3 years ago

7

Elaine had 27 buttons. Her grandmother donated 6 cards of buttons to the collection. Elaine sorted the buttons into 9 piles, put

ting 7 buttons in each pile. How many buttons were on each card from Elaine's grandmother?

1 answer:

yan [13]3 years ago

5 0

36 buttons were on the cards

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Susan had 8/9 acres of land. She planted 2/5 of it with corn. How many acres did she plant with corn?

Sergio039 [100]

$\bf \textit{how much is }\frac{2}{5}\textit{ of }\frac{8}{9}?\implies \cfrac{8}{9}\cdot \cfrac{2}{5}\implies \cfrac{16}{45}$

that's how many acres she planted with corn.

6 0

2 years ago

Match the real-world problem to its constant of proportionality.

OleMash [197]

Answer:

6.12

1.39

4.12

12

Step-by-step explanation:

If y ∝ x, then y = kx.

So, the constant of proportionality is given by $k = \frac{y}{x}$

Case 1:

$18.36 for 3 pizzas

Therefore, the constant of proportionality is $\frac{18.36}{3} = 6.12$

Case 2:

$4.17 for 3 pounds of bananas.

Hence, the constant of proportionality is $\frac{4.17}{3} = 1.39$

Case 3:

$16.48 for 4 pounds of potatoes.

Hence, the constant of proportionality is $\frac{16.48}{4} = 4.12$

Case 4:

2 cups of flour to make 24 cookies.

Hence, the constant of proportionality is $\frac{24}{2} = 12$ (Answer)

7 0

3 years ago

Oscar has received a $4,000 gift and is looking for a bank to start a savings account. Which option

hoa [83]

Answer:

The best option for him would be a real interest rate of 5%.

Step-by-step explanation:

The nominal interest rate is the one that represents the percentage of increase of the money that is in a certain investment, without discounting the depreciation due to inflation or the payment of taxes.

On the other hand, the real interest rate is the one that represents the real increase in the money invested, after discounting inflation and any taxes to be paid.

Therefore, the best option for Oscar would be to invest his $ 4,000 in a savings account with a real interest rate of 5% per year.

4 0

2 years ago

What equation do you get when you solve -n + sx =n-a for x

baherus [9]

Is this rearranging of equation??
-n+sx=n-a
sx=2n-a
x=2n-a/s

7 0

2 years ago

What is the value of the expression i To the power of 1 times I to the power of 2 times I to the power of 3 times I to the power

nalin [4]

Answer:

-1

Step-by-step explanation:

$i^1\cdot i^2\cdot i^3\cdot i^4= \\\\i^{1+2+3+4}= \\\\i^{10}= \\\\-1$

Hope this helps!

6 0

2 years ago