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2 years ago

What is 9/blank= 4? i really don't know

Mathematics

2 answers:

julsineya [31]2 years ago

6 0

Answer:

9/2.25 = 4

Step-by-step explanation:

9/x = 4

x = 9/4 or 2.25

Alchen [17]2 years ago

5 0

Answer:

9/4

Step-by-step explanation:

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Consider the work shown for 99÷7. What does the highlighted 1 represent?

kirill [66]

Answer:

The amount left after each group gets 14

Step-by-step explanation:

R1 means there is 1 left after dividing everything

5 0

2 years ago

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Ty's brother earns $15 per hour. The store offers him a raise of 12%. How much is the raise in dollars

gizmo_the_mogwai [7]

Answer:

$1.80

Step-by-step explanation:

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3 years ago

I'll mark u as brainliest pls help with these 2 questions

aev [14]

Answer:

3, 10

Step-by-step explanation:

5x-1=14 ->

5x=15 ->

x=3.

15+3x=45 ->

3x=45-15=30 ->

3x=30 ->

x=10.

Hope that help! :)

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2 years ago

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Solve 6x + 2 = 5x + 17 for x if there is a solution.

labwork [276]

Answer: x=15

Step-by-step explanation:

To solve problems like this you need to simplify the equations on both sides and then isolate your variable x.

3 0

3 years ago

2x^3-x^2+x-2 factorize

bekas [8.4K]

Answer:

$(x-1)(2x^2+x+2)$

Step-by-step explanation:

Factorize:

$f(x)=2x^3-x^2+x-2$

<u>Factor Theorem</u>

If f(a) = 0 for a polynomial then (x - a) is a factor of the polynomial f(x).

Substitute x = 1 into the function:

$\implies f(1)=2(1)^3-1^2+1-2=0$

Therefore, (x - 1) is a factor.

As the polynomial is cubic:

$\implies f(x)=(x-1)(ax^2+bx+c)$

Expanding the brackets:

$\implies f(x)=ax^3+bx^2+cx-ax^2-bx-c$

$\implies f(x)=ax^3+(b-a)x^2+(c-b)x-c$

Comparing coefficients with the original polynomial:

$\implies ax^3=2x^3 \implies a=2$

$\implies (b-a)x^2=-x^2 \implies b-2=-1 \implies b=1$

$\implies -c=-2 \implies c=2$

Therefore:

$\implies f(x)=(x-1)(2x^2+x+2)$

Cannot be factored any further.

4 0

2 years ago

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