2 years ago

Find the value needed for the “?” to make the equation true.

Mathematics

2 answers:

Alenkasestr [34]2 years ago

7 0

Answer:

? = 18

Step-by-step explanation:

andrezito [222]2 years ago

7 0

Answer:

? = 18

Step-by-step explanation:

d^?/d^11 = d^7

d^? = d^11*d^7

d^? = d^(11+7)

d^? = d^18

? = 18

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romanna [79]

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Explanation:

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3 years ago

For each equation choose a value for x and then solve

ss7ja [257]

Answer:

Step-by-step explanation:

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2 years ago

Which quadratic equation has solutions x=8 and x=−1?

andrezito [222]

There are two ways you can do this

$Using the formula$

${x}^{2} - (sum \: of \: roots)x + poduct \: of \: roots = 0$

${x}^{2} - (8+-1)x + - 1 \times 8 = 0$

${x}^{2} - 7x - 8 = 0$

$Working backwards$

$x = 8 \: or \: x = - 1$
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$\Rightarrow {x}^{2} + x -8x - 8 = 0$
$\Rightarrow {x}^{2} - 7x - 8 = 0$

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3 years ago

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koban [17]

Answer:

m=4

Step-by-step explanation:

-5m=-20

m= - 20/-5

m=4

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3 years ago