3 years ago

Solve for x. Round to the nearest tenth. 8y + 2 = 5y - 7

Mathematics

1 answer:

Lelu [443]3 years ago

4 0

Answer:

the answer would be y=

Step-by-step explanation:

y=-3

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If f(x) = -2x^2 + 3 then f(-5) = ??

Sladkaya [172]

F(-5)= -2x^2+3

-5*-5=25

25*-2=-50

F=-50+3

F=-47

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3 years ago

Anton leaves a cup of hot chocolate on the counter in his kitchen. Which graph is the best representation of the change in tempe

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Step-by-step explanation:

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A store had 235 MP3 players in the month of January. Every month ,30% of the MP3 players were sold and 50 new MP3 players were s

larisa86 [58]

F(n)=235-(235*.3^n)+50n is your equation where * is multiplication and ^ it to the power to.

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2 years ago

Multiply: (4x – 7)(2x – 9)

Marizza181 [45]

Hello there!

Let's use foil.

First: 4x * 2x = 8x^2

Outside: 4x * -9 = -36x

Inside: -7 * 2x = -14x

Last: -7 * -9 = 63

Now, let's combine these.

8x^2 - 36x - 14x + 63

Finally, we can simplify this

8x - 50x + 63

I hope I helped!

Let me know if you need anything else!

~ Zoe

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3 years ago

Which is the measure of line segment AB?<br> A)10 feet<br> B)15 feet<br> C)20 feet<br> D)100 feet

zavuch27 [327]

Find the last angle:
180-(30+90)
180-(120)
60

Evaluate using sine rule:
$\frac{c}{sinC}$ = $\frac{b}{sinB}$

c= $\frac{bsinC}{sinB}$

= $\frac{10sin90°}{sin30°}$

=20

The length of line segment AB is 20 feet (answer choice C)

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2 years ago

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