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igor_vitrenko [27]
3 years ago
14

There is a sale on a gallon of milk at the grocery store. The original price was $2.99 and the new price is $2.49. What is the p

ercentage of decrease on the gallon of milk? Round your answer to the nearest whole percent
A) 17%
B) 50%
C) 23%
D) 20%
Mathematics
2 answers:
Tju [1.3M]3 years ago
6 0

Answer:

c

Step-by-step explanation:

Mariana [72]3 years ago
3 0

Answer: a

Step-by-step explanation:

2.99 - 17% = 2.49

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Solve the following quadratic function by utilizing the square root method. f(x) = 1 - x2 x = + [?]
faltersainse [42]

Answer:

Step 1) y=16-x2. Swap the sides so that all terms of the variables are on the left side. Step 2) 16-x_{2}=y. Subtract 16 from both sides. Step 3) -x_{2}=y-16 Divide the two sides by -1. Step 4). \frac{-x_{2}}{-1}=\frac{y-16}{-1} Dividing by -1 undoes the multiplication by -1. Step 5). x_{2}=\frac{y-16}{-1} Step 6) dived y-16 by -1 And the final answer = x_{2}=16-y

Step-by-step explanation:

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3 years ago
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Bella used 2/9 of a paper pack, or 72 pieces. How many pieces of paper were there to start with?
prisoha [69]

Hello!

First, we need to find the unit rate.

72 divided by 2 = 36.

36 x 9 = 324.

There were 324 pieces of paper to start with.

Hope this helps, ~Pooch ♥

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3 years ago
Bella wants to tile a wall measuring 1.2 m by 2.16 m. She finds square tiles she likes with side lengths of 10 cm, 12 cm or 18 c
uysha [10]

Answer:

Step-by-step explanation:

1.2m = 120 cm

2.16 m = 216cm

120×216 =25920cm

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8 0
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Simplify. a2 · a5 a3 A) a3 B) a4 C) a7 D) a10
castortr0y [4]

a^{10}, that is D

when multiplying like variables add the exponents

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3 years ago
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PLEASE PLEASE HELP
marta [7]

Answer:

Approximately 3 grams left.

Step-by-step explanation:

We will utilize the standard form of an exponential function, given by:

f(t)=a(r)^t

In the case of half-life, our rate <em>r</em> will be 1/2. This is because 1/2 or 50% will be left after <em>t </em>half-lives.

Our initial amount <em>a </em>is 185 grams.

So, by substitution, we have:

\displaystyle f(t)=185\big(\frac{1}{2}\big)^t

Where <em>f(t)</em> denotes the amount of grams left after <em>t</em> half-lives.

We want to find the amount left after 6 half-lives. Therefore, <em>t </em>= 6. Then using our function, we acquire:

\displaystyle f(6)=185\big(\frac{1}{2}\big)^6

Evaluate:

\displaystyle f(6)=185\big(\frac{1}{64}\big)\approx2.89\approx 3

So, after six half-lives, there will be approximately 3 grams left.

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3 years ago
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