3 years ago

(X+9)(x-2)-9x-6 equivalen to

Mathematics

1 answer:

Inessa [10]3 years ago

6 0

Answer:

hrheje

Step-by-step explanation:

bdhsjsiskskdkdhdhennsjss

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If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.

Helen [10]

It depends if its decreasing 25% of the original quantity or decreasing by 25% of the quanity that is after already increasing by 25%.

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2 years ago

three friends are holding a car wash and agree to split the profits equally. they purchase supplies for $75. if their income is

koban [17]

$450-$75=$375/3=$125
They each get $125

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2 years ago

Read 2 more answers

6) If 1 Inch = 2.54cm, then set up and solve a proportion that finds how many

Roman55 [17]

Answer:

3.93700787402, almost 4

Step-by-step explanation:

10 ÷ 2.54

3 × 2.50 = 7.50

3 × 0.04 = 0.12

7.50 + 0.12 = 7.65

7.65 + 2.54 = 10.19

The precise number is use calculator.

7 0

2 years ago

. The length of a micrometer is

Verdich [7]

Move the decimal five places until it is after one number, and because the number got bigger, your exponent is a negative.

4 0

2 years ago

In a class of 50 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

Tems11 [23]

Answer: 3

Step-by-step explanation:

Let E be the event of that student pierces ear and N be the event of that student pierces nose.

Given: $n(E\cup N=50)$

$n(E)=46\\\\n(N)=7$

For any two event A and B, we have

$n(A\cup B)=n(A)+n(B)-n(A\cap B)$

Similarly , $n(E\cup N)=n(E)+n(N)-n(E\cap N)$

$50=46+7-n(E\cap N)\\\\\Rightarrow\ n(E\cap N)=53-50=3$

Hence, 3 students have piercings both on their ears and their noses.

7 0

2 years ago