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3 years ago

10

Sam charges $3 per week to care for house plants while the owners are out of town. He had six customers in one two-week period.

He saved one-fifth of his earnings. How much did he spend?

1 answer:

fomenos3 years ago

4 0

He spent 28.8 dollars
Equation- 3*6*2 then divided by 5 times 4 is your answer

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Use foil (a + 3)(a - 2)

blsea [12.9K]

Answer:

$\left(a+3\right)\left(a-2\right)=a^2+a-6=$

Step-by-step explanation:

Given expression is $\left(a+3\right)\left(a-2\right)$ .

Now we need to multiply this using FOIL.

F = First $=\left(a\right)\left(a\right)= a^2$

O = Outside $=\left(a\right)\left(-2\right)= -2a$

I = Inside $=\left(3\right)\left(a\right)= 3a$

L = Last $=\left(3\right)\left(-2\right)= -6$

Hence we get :

$\left(a+3\right)\left(a-2\right)=a^2-2a+3a-6=a^2+a-6=$

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Misha’s hamster weighed 0.845 kilograms. About how much does it weigh, rounded to the nearest hundredth?

eimsori [14]

Answer: 0.85 kilograms

Step-by-step explanation:

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At a pizza shop, 80% of the customers order a pizza, 15% of the customers

meriva

90% out of 105% which would be 0.85

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You are choosing between two health club. club a offers membership for a fee of $20 plus a monthly fee of $25. club b offers mem

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20+25x=35+18x
x=1 month
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3 years ago

Show that sin (x + pi) = -sin x.

Lunna [17]

Answer:

The answer in the procedure

Step-by-step explanation:

we know that

$sin(A + B) = sin A cos B + cos A sin B$

In this problem we have

$sin(x + \pi)=sin (x)cos(\pi) + cos(x)sin(\pi)$

Remember that

$sin(\pi) = 0$

$cos(\pi) = -1$

substitute

$sin(x + \pi) = sin(x)(-1) + cos(x)(0)$

$sin(x + \pi) = -sin(x)$

4 0

3 years ago