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3 years ago

Use the distributive property to write an expression equivalent to: 5(x + 3)

Mathematics

1 answer:

babymother [125]3 years ago

3 0

Answer:

5x+15

Step-by-step explanation:

Multiply the term outside the parentheses by each term inside the parenthesis.

5*x+5*3

5x+15

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The class president has decided that the students will either sale cookies or hold car washes. the rest of the officers need you

prisoha [69]

Each week the cookies sales was Aprox 167. Each week the car wash profit was about 175

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2 years ago

3+5i/-2+3i perform operation

melisa1 [442]

Answer:

$\dfrac{9}{13}-\dfrac{19}{13}i$

Step-by-step explanation:

Remember $i^2=-1$

You are given the fraction $\dfrac{3+5i}{-2+3i}$

First, multiply the numerator and the denominator by -2-3i:

$\dfrac{3+5i}{-2+3i}=\dfrac{(3+5i)(-2-3i)}{(-2+3i)(-2-3i)}=\dfrac{(3+5i)(-2-3i)}{(-2)^2-(3i)^2}=\dfrac{(3+5i)(-2-3i)}{4-9i^2}=\dfrac{(3+5i)(-2-3i)}{4+9}$

This gives you 13 in denominator, now multiply two complex numbers in numerator:

$(3+5i)(-2-3i)=-6-9i-10i-15i^2=-6-19i+15=9-19i$

Thus, the initial fraction is

$\dfrac{9-19i}{13}=\dfrac{9}{13}-\dfrac{19}{13}i$

4 0

2 years ago

Help please!!!!!!!!!

Triss [41]

The answer is -4, hope this helped

8 0

3 years ago

The mean vitamin C level for 20 dogs was 7.6 milligrams per liter, with a standard deviation of 2.1 milligrams per liter.

SpyIntel [72]

Answer: The mean increases.

Step-by-step explanation:

The value of 0.9 mg/L is very low compared to a means of 7.6 mg/L with a standard deviation of 2.1 mg/L. It seems as though it is an outlier that is suffiently different from the others, and probably should be dropped from the data set. That would do 2 things: 1) the stabdard deviation will likely decrease, indicating a more confident data set, and 2) the mean vitamin C level will increase.

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2 years ago

If f(x)=2x^3+5√(x-2) complete the following statement, f(6)=

solong [7]

Answer: 442

Step-by-step explanation:

$f(x)=2x^3+5\sqrt{(x-2)}$