2 years ago

Find the value of x.

Mathematics

1 answer:

Ksju [112]2 years ago

8 0

Answer:

x = 40

Step-by-step explanation:

because they are similar triangles

65+75 =140

180-140 = 40

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If α and β are the zeroes of the polynomial ax^2 + bx + c, find the value of α^2 + β^2

Pie

Answer:

Step-by-step explanation:

α + β = -b/a

αβ = c/a

α² + β² = (α + β)² - 2αβ

$= (\frac{-b}{a})^{2}-2\frac{c}{a}\\\\= \frac{b^{2}}{a^{2}}-\frac{2c}{a}\\\\=\frac{b^{2}}{a^{2}}-\frac{2c*a}{a*a}\\\\=\frac{b^{2}-2ca}{a^{2}}$

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Answer:

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1 year ago

A/2.8 x 2.8<br> "A over 2.8 times 2.8"

Jobisdone [24]

A/2.8 • 2.8
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Once a is divided by 2.8, it is then multiplied by 2.8, bringing us back to the original value of a.

Answer:
a/2.8 • 2.8 = a

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2 years ago

Name the algebraic property demonstrated an example below: 3•(x•y)=(3•x)•y

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<span>3•(x•y)=(3•x)•y
</span>
answer
associative property of multiplication

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3 years ago

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Answer:

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And I’m sorry it looks like a number is missing from the second question

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