3 years ago

Can someone help me do both?

1 answer:

6 0

That is right because you are doing times for you can get your answer you can do adding so it is 192.The volume it would be 22 because you are adding 4+4+6+8=22 so that will be the volume hopes this helps. :)

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(3x−1)+x2−4 when x=3 how do i solve it

Reil [10]

(3×3-1)+3×2-5

=(9-1)+3×2-5

=8+6-5

=14-5

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2 years ago

-16t squared + 16t + 480 t=time after jumping in seconds h=height in feet How many seconds did did it take her to hit the water

Agata [3.3K]

That is height
h=16t^2+16t+480
when h=0 is when it hits the water

0=16t^2+16t+480
undistribbute 16 for ease
0=16(t^2+t+30)
16*0=0 so assume
t^2+t+30=0
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3 years ago

Express your answer as a polynomial in standard form.

andrezito [222]

I personally don’t know the answer so i can’t help

4 0

3 years ago

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____ [38]

Answer:

It's the first one

4 0

3 years ago

Read 2 more answers

In right triangle DEF, ∠E is a right angle, m∠D=26∘, and DF=4.5.

jok3333 [9.3K]

Answer:

The measurement of EF is 1.98 units

Step-by-step explanation:

In Δ DEF

∵ m∠E = 90°

∴ FD is the hypotenuse of the triangle

∵ m∠D = 26°

∵ EF is opposite to angle D

- We can use the sine ratio to find it

∵ sin D = $\frac{EF}{FD}$ ⇒ (opposite side / hypotenuse)

∵ FD = 4.5 units

∴ sin(26) = $\frac{EF}{4.5}$

- Multiply both sides by 4.5

∴ 4.5 sin(26) = EF

∵ sin 26° ≈ 0.44

∴ 4.5(0.44) = EF

∴ 1.98 = EF

The measurement of EF is 1.98 units

3 0

3 years ago