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3 years ago

Please someone help me

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

7 0

CCCCCCCCCCCCCCCCCCCCCCCCCCC

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What is the numeratorfor the following rational expretion? 3/k+4/k=?/k

grin007 [14]

Because they all have the same denominator, all you have to do is add the numerator! So, 3/k + 4/k would equal 7/k

6 0

3 years ago

Read 2 more answers

Solve algebraically for x: 2(x – 4) 2 + 10 = 30

forsale [732]

Answer:

$x=4$ or $x=2$

Step-by-step explanation:

When given the following equation,

$2(x-4)^2+10=30$

One must follow the order of operations to solve the equation and get a valid result. The order of operations states the following,

1. Parenthesis

2. Exponents

3. Multiplication/ Division

4. Addition/ Subtraction.

Normally, one would combine the terms in the parenthesis, but since they are unlike terms, one will have to undo the exponents first. Expand the binomial.

$2(x-4)^2 + 10 = 30\\\\2(x^2-8x+16)+10=30$

Now distribute, multiply every term inside the parenthesis by the term outside,

$2(x^2-8x+16)+10=30\\\\2(x^2)+2(-8)x+2(16) + 10 = 30$

Simplify,

$2(x^2)+2(-8x)+2(16)+10=30$

$2x^2 -16x +32 +10 = 30$

$2x^2 -16x +42=30$

Inverse operations,

$2x^2 -16x + 42 = 30\\-30\\\\2x^2 - 16x + 12= 0$

To simplify the equation, divide all terms by (2).

$x^2 - 8x +6=0$

Factor, rewrite the quadratic equation as a product of linear equations,

$(x-4)(x-2)=0$

Solve using the zero product property. The zero product property states that any number times zero equals zero,

$(x-4)(x-2)=0\\\\x=4,x=2$

4 0

3 years ago

Jose has 9 more comic books than robin. robin has 5 more comic books than lee. if jose has 23 comic books, how many comic books

Lerok [7]

Simple subtraction. to find how many robin has, subtract 9 from 23, which is 14. so robin has 14 comic books. robin has 5 more than lee, so subtract 5 from 14, which is 9. so lee has 9 comic books

6 0

3 years ago

Find an invertible matrix P and a matrix C of the form such that the matrix A has the form A. The eigenvalues of A are and with

Drupady [299]

Answer:

Hello your question is incomplete attached below is the correct question

and the solution

answer: A

Step-by-step explanation:

attached below is a detailed solution of the given problem

There exists P and C such that ( ∵ λ1 ≠ λ21 so A is diagonalizable )

5 0

3 years ago

Find the measure of the arc or angle indicated.

Shkiper50 [21]

9514 1404 393

Answer:

arc AC = 63°

Step-by-step explanation:

Arc BC is twice the measure of inscribed angle BAC, so is ...

arc AC = 2×89° = 178°

The remaining arc of the circle is the difference between 360° and the sum of the other two.

arc AC = 360° -119° -178°

arc AC = 63°

4 0

3 years ago