3 years ago

Find the zeros of r(x) = 8x2 + 4x +5.

Mathematics

1 answer:

nikitadnepr [17]3 years ago

5 0

Answer:

x= -21/4

Step-by-step explanation:

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Calculate the mass of a liquid with a density of .7892 g/mL and a volume of 121.0 mL.

nataly862011 [7]

Answer:

95.49 g

Step-by-step explanation:

D = m/v

Looking for mass so isolate m to form equation format

D × V = m

Plug in numbers

.7892g/mL × 121.0 mL = 95.4932 g

Only g and not g/mL because the mL cancels each other out. It's easier to see if you rewrite it on paper.

Round to sig figs

Both original numbers hold 4 sig figs

95.49 g

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3 years ago

Which expression is equivalent to -3(2b + 9) + 5(-5b + 6)?

Nata [24]

Answer:

C is correct

Step-by-step explanation:

-3(2b+9) + 5 (-5b+ 6)

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2 years ago

5x^2-(3xy-7x^2)+(5xy-12x^2)<br> When x=-0.25, and y=4

prohojiy [21]

$5x^2-(3xy-7x^2)+(5xy-12x^2)=5x^2-3xy+7x^2+5xy-12x^2=2xy\\\\ 2\cdot(-0.25)\cdot4=-2$

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2 years ago

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dalvyx [7]

Answer:

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Step-by-step explanation:

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2 years ago

Please help hard math lots of points

guapka [62]

Your answer is going to y = lx + 4l + 2

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2 years ago

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