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asambeis [7]
3 years ago
13

(-3x-5)4 expand the expression.

Mathematics
2 answers:
solmaris [256]3 years ago
8 0
The new expression would be -12x-20, this can be done using distributive property.
Ratling [72]3 years ago
6 0
The first term is : [4!/(4-0)!0!]*(-3x)^4(-5)^0=81x^4
the second term is [4!(4-1)!1!]*(-3x)^3(-5)^1=540x^3
the third term is [4!/(4-2)!2!]*(-3x)^2(-5)^2=1350x^2
the fourth term is [4!/(4-3)!3!](-3x)^1(-5)^3=1500x
the fifth term is: [4!/(4-4)!4!](-3x)^0(-5)^4=625
so the result is: 81x^5+540x^3+1350x^2+1500x+625
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Lynn has a box of crayons.
Scrat [10]

Answer:

<em>There are 72 crayons in the box</em>

Step-by-step explanation:

<u>Fractions</u>

To solve this problem we'll manage numbers as fractions to keep the precision up to the end of it.

Lynn has a box of crayons. It's given 4/9 of the crayons are blue. The remaining crayons are:

1-\frac{4}{9}=\frac{5}{9}

From that portion, 65% are red, or equivalently, 35% are yellow.

We write 35% as a fraction:

\displaystyle 35\%=\frac{35}{100}=\frac{7}{20}

Thus, the portion of yellow crayons is:

\displaystyle \frac{7}{20}\cdot \frac{5}{9}=\frac{7}{36}

This fraction of x crayons is equal to 14, thus:

\displaystyle x=\frac{14}{\frac{7}{36}}=14\cdot\frac{36}{7}

x = 72

There are 72 crayons in the box

7 0
3 years ago
Which statement best describes how to determine wether f(x)=x4-x3 is even a function
egoroff_w [7]
X4-x3=1 -4+3
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6 0
3 years ago
Which ordered pair is a solution to the equation? y=x3/4
Leni [432]

Answer:

(8,6)

Step-by-step explanation:

y=x3/4

y=8(3/4)

y=24/4

y=6

when you input 8 for x, you get 6 for y.

6 0
3 years ago
Read 2 more answers
Let f(x)=4x+9. Write a function g whose graph is a reflection in the y-axis of the graph of f. g(x)= ?
frez [133]

Answer:

g(x)=-4x+9

Step-by-step explanation:

So we know that:

f(x)=4x+9

To reflect across the <em>y-axis</em>, instead of x, use -x. Therefore:

g(x)=f(-x)=4(-x)+9

Simplify:

g(x)=-4x+9

And that's our answer :)

3 0
3 years ago
Write 0.43 as a fraction, reduced to the lowest terms​
alexdok [17]

Answer:

43/100

Step-by-step explanation:

It would have to be 43/100 becuase 43 is a prime number, therefore it cannot be simplified.

8 0
3 years ago
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