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3 years ago

Write the expression in simplified radical form. Show all steps and work (7-2√5)/(11+√5)

1 answer:

4 0

Multiply 11-√5 by 11+√5 .the answer is 121-5=116
so the fraction is turned into (7-2√5)(11+√5)/116
77+7√5 -22√5 -10=66-15√5/116

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3y-3.5/3y+6=17/25.5. find the value of y. give the scale factor of the polygon

Mekhanik [1.2K]

Hi the answer to your question is

((3y - 3.5) / (3y + 6)) * 25.5 = (17 / 25.5) * 25.5

((3y - 3.5) / (3y + 6)) * 25.5 = 17 (76.5y - 89.25) / (3y + 6) = 17

((76.5y - 89.25) / (3y + 6)) * (3y + 6) = 17 * (3y + 6) 76.5y - 89.25 = 51y + 102 76.5y - 51y = 102 + 89.25

25.5y = 191.25

y = 191.25 / 25.5

y = 7.5

3 0

3 years ago

Write a ratio to express the number of people who preferred WANR to those who preferred WCLM.

iragen [17]

11:12 is the answer to your question

3 0

3 years ago

What is the y-coordinate of the solution for the system of equations?

enot [183]

Y= 12 - x

27 + 3( 12 - x ) = 2x

7 0

3 years ago

Read 2 more answers

the polynomial ky^3+3y^2-3 and 2y^3-5y+k when divided by (y-5) leave the same remainder in each case. Find the value of k.

marshall27 [118]

Answer:

$k=\frac{153}{124}$

Step-by-step explanation:

According to the Remainder Theorem; when P(y) is divided by y-a, the remainder is p(a).

The first polynomial is :

$p(y)=ky^3+3y^2-3$

When p(y) is divided by y-5, the remainder is

$p(5)=k(5)^3+3(5)^2-3$

$p(5)=125k+75-3$

$p(5)=125k+72$

When the second polynomial:

$m(y)= 2y^3-5y+k$ is divided by y-5.

The remainder is;

$m(5)= 2(5)^3-5(5)+k$

$m(5)= 225+k$

The two remainders are equal;

$\implies 125k+72=225+k$

$\implies 125k-k=225-72$

$\implies 124k=153$

$k=\frac{153}{124}$

3 0

3 years ago

What is the leading coefficient of the following expression: 5x^4-7x^3+2x+1

never [62]

Answer:

Step-by-step explanation:

The leading coefficient belongs to the term with the largest exponent

Given

5 $x^{4}$ - 7x³ + 2x + 1 ← in standard form

The leading term is 5 $x^{4}$ ← with leading coefficient 5

5 0

3 years ago