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2 years ago

2.

Mathematics

1 answer:

mixer [17]2 years ago

8 0

3/8 Is the correct answe

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Help solve equations by completing the square

Allushta [10]

$x^2+10x+22=13\\x^2+10x+22-13=0\\x^2+10x+9=0\\$

Now completing the square.

$(x^2+10x)+9=0\\(x^2+10x+25)+9-25=0\\(x+5)^2-16=0\\(x+5)^2=16$

(x+5)² = 16 is the rewritten equation... For first question btw.

For the solutions to the equation -

$x+5=\sqrt{16},-\sqrt{16} \\x+5=4,-4\\x=4-5,-4-5\\x=-1,-9$

x = -1,-9 is the solution, for the second question.

5 0

3 years ago

Martin has 5/6 of a pizza Liam has four times as much pizza is Martin how much pizza does Liam have? (Put it in a fraction)

djverab [1.8K]

Answer:

The pizza of martin is $\dfrac{4}{5}$

Step-by-step explanation:

Given that,

Martin has $\dfrac{5}{6}$ of pizza.

Liam has four time much pizza.

Let us consider pizza is x.

We need to calculate the how much pizza of martin

Using given data

Pizza of Martin = $x\times\dfrac{5}{6}$

Pizza of Liam = $4\times(\dfrac{5}{6}x)$

The pizza of martin will be

$Pizza\ of\ martin=\dfrac{\dfrac{20}{6}x}{\dfrac{20}{6}x+\dfrac{5}{6}x}$

$Pizza\ of\ martin =\dfrac{4}{5}$

Hence, The pizza of martin is $\dfrac{4}{5}$

6 0

3 years ago

Explain why any number that is divisible by 9 is also divisible by 3.

slamgirl [31]

Since 3 x 3 = 9, 9 is divisible by 3. So, 3 would be a factor of any number divisible by 9

6 0

3 years ago

Can somebody help me with this question

ArbitrLikvidat [17]

What you need to do is find the greatest amount (1) and the lowest amount (1/4) of sap collected and the find how many times the lowest can go into the greatest. (So how many times can 1/4 go into 1). I believe that this is how you would do that.

8 0

3 years ago

Plz help me with this

viva [34]

Answer:

The height on the plans is 6.5 inches

Step-by-step explanation:

1 inch of plan = 5 inch of dollhouse

we know the dollhouse is 32.5 inches, so we need to determine the unknown

x inch of plan = 32.5 inch of dollhouse

x = 32.5/5 = 6.5 inches

8 0

2 years ago