MATHEMATICS MIDDLE SCHOOL

What’s 5(2x - 11) simplified by distributive property?

Answers

Answer 1
Answer:

Answer:

Simplified: 10x-55

Step-by-step explanation:

Distribute the five into the parenthesis..

(5)2x- (5)11

Then, multiply.

10x-55

10x-55 is the simplified version by the distributive property.
Answer 2
Answer:

Answer:

10x - 55

Step-by-step explanation:

5(2x-11)

5*2x=10x

5*11

10x-55

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Isabella has $6,000. She gave her mother $1,800. She donated 1/4 of the remaining amount to a charity. What percent of her money did Isabella donate? *

Answers

Answer:

Step-by-step explanation:

6000-1800 = 4200 divided by 1/4 = 1050

6,000 - 1,800 = 4,200

4,200 / 1/4 (or 25)

she donated 168.0% of her money.

How many complex zeros does the polynomial function have?

F(x)=2x^4 +5x^3 - x^2 +6x-1

Answers

Answer:

Two complex roots.

Step-by-step explanation:

F(x)=2x^4 +5x^3 - x^2 +6x-1

is a polynomial in x of degree 4.

Hence F(x) has 4 roots.  There can be 0 or 2 or 4 complex roots to this polynomial since complex roots occur in conjugate pairs.

Use remainder theorem to find the roots of the polynomial.

F(0) = -1 and F(1) = 2+5-1+6-1 = 11>0

There is a change of sign in F from 0 to 1

Thus there is a real root between 0 and 1.

Similarly by trial and error let us find other real root.

F(-3) = -1 and F(-4) = 94

SInce there is a change of sign, from -4 to -3 there exists a real root between -3 and -4.

Other two roots are complex roots since no other place F changes its sign

Please help me with this Q! =)

Answers

This is simple MyCrazyCupcake You add the fractions together.
2/8+11/12=??? If I did this right it would be 13/20.

the common ratio of a geometric series is 3 and the sum of the first 8 terms is 3280. what is the first term of the series?

Answers

Answer: 1

Step-by-step explanation:

The formula for calculating the sum of a Geometric series if the common ratio is greater than 1 is given as :

S_(n) = (a(r^(n)-1) )/(r-1)

Where S_(n) is the sum of terms , a is the first term , r is the common ratio and n is the number of terms.

From the question:

S_(n) = 3280

a = ?

r = 3

n = 8

Substituting this into the formula , we have

3280 = (a(3^(8)-1) )/(3-1)

3280 = (a(6561-1))/(2)

Multiply through by 2 , we have

6560 = a ( 6560)

divide through by 6560, we have

6560/6560 = a(6560)/6560

Therefore : a = 1

The first term of the series is thus 1

Answer:

1

Step-by-step explanation:

What is 10 5/16-(5 1/4 +2 9/16)

Answers

10(5)/(16)-(5(1)/(4)+2(9)/(16))=\ \ \ \ | make\ common\ denominator\n\n10(5)/(16)-(5(4)/(16)+2(9)/(16))=\ \ \ | omit\ the\ bracket\n\n10(5)/(16)-5(4)/(16)+2(9)/(16)=7(5-4+9)/(16)=7(10)/(16)\n\nSolution\ is\ 7(10)/(16).

How many kilometers is 50 centimeters?

Answers

0.0005 KM are in 50 Centimeters
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