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2 years ago

I’m really bad at math word problems so yeah lol don’t make fun of me

Mathematics

2 answers:

Virty [35]2 years ago

6 0

Answer:

Step-by-step explanation:

Pie2 years ago

6 0

B. She earns money and doesn't spend anything, according to the word problem, so it is B, officially meaning she has earned $5=$13

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Find CD. A) 5 B) 28 C) 56 D) 96

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Answer:

C) 56

Step-by-step explanation:

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1 year ago

The high school courtesy club bought red and black ink pens for Teacher Appreciation Day. The club bought 75 pens in all. Each b

dezoksy [38]

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2 years ago

Jack learned that there was a monthly charge from the bank if the account did not maintain a balance a $100 per month.

kolezko [41]

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2 years ago

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A student rolls a number cube whose six faces are numbered 1 through 6.

zalisa [80]

Answer:

Step-by-step explanation:

The sample space for this experiment is the set of all possible outcomes.

A student rolls a number cube whose six faces are numbered 1 through 6.

Therefore, all possible outcomes are:

rolled number 1;
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rolled number 3;
rolled number 4;
rolled number 5;
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Hence, the sample space is {1, 2, 3, 4, 5, 6}

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2 years ago

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8.46 If 100 is decreased by a% and the result is decreased by b%, then what is the total percent decrease (in terms of a and b)?

Marysya12 [62]

Answer:

The total percent decrease is $a+b-\frac{a b}{100}$

Step-by-step explanation:

We are given with a word problem
We are asked to find the total percentage decrease
We can do this in two steps

Step 1: Finding the two percentage decrease

Step 2: Finding their difference

Step 1 of 2

Let the decrease by a% be 100-a

Then b% decrease is

$\begin{aligned}\frac{b}{100} \times(100-a) &=\frac{100 b-a b}{100} \\\frac{100 b}{100}-\frac{a b}{100} &=b-\frac{a b}{100}\end{aligned}$

Step 2 of 2

The percentage difference between the two percentages is,

$\begin{aligned}&(100-a)-\left(b-\frac{a b}{100}\right)=100-a-b+\frac{a b}{100} \\&100-a-b+\frac{a b}{100}=100-\left(a+b-\frac{a b}{100}\right)\end{aligned}$

Since 100 is the total percent $a+b-\frac{a b}{100}$ is the percentage decrease.

3 0

1 year ago