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3 years ago

1. x² + 2xy – 7 xy + 4y?Input your answer here:

Mathematics

1 answer:

viktelen [127]3 years ago

6 0

collect the like terms:

Solution: x^2-5xy+4y

P.S

get the photo math app. :)

Hope that helps.

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Now Cathy is three times as old as Katie. In six years Cathy will be only twice as old as Katie. How old is each girl now?

klasskru [66]

Answer:

6 and 18

6+6=12

18+6=24

12x2=24

Unless a number is given it is mainly trial and error so guessing numbers that fit the first part of Ax3=B

Step-by-step explanation:

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2 years ago

Four whole numbers are each rounded to the nearest 10. The sum of the four rounded numbers is 90. What is the maximum possible s

qwelly [4]

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Step-by-step explanation:

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3 years ago

Find the zeros of the polynomial function and state the multiplicity of each.

zheka24 [161]

$\bf f(x) = 4(x + 7)^2(x - 7)^3\implies 0 = 4(x + 7)^2(x - 7)^3
\\\\\\
0=(x+7)^2(x-7)^3\implies 
\begin{cases}
0=(x+7)^7\\
\qquad 0=(x+7)(x+7)\\
\qquad -7=x\\
\qquad -7=x\\
----------\\
0=(x-7)^3\\
\qquad 0=(x-7)(x-7)(x-7)\\
\qquad 7=x\\
\qquad 7=x\\
\qquad 7=x
\end{cases}$

the -7 is found there twice, so it has a multiplicity of 2
the +7 is there thrice, so it has multiplicity of 3

7 0

2 years ago

Describe the solutions of 5 <n

Ainat [17]

Answer:

Step-by-step explanation:

All real number less than 5

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3 years ago

True or false.<br> y +2<8; y = 3

Evgesh-ka [11]

Answer:

false

Step-by-step explanation:

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2 years ago

1. x² + 2xy – 7 xy + 4y?Input your answer here:​

1. x² + 2xy – 7 xy + 4y?Input your answer here: