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2 years ago

12

Perimeter of triangle? need some help please!

1 answer:

pychu [463]2 years ago

3 0

You need to subtract the numbers for 180 and you will have the answer

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Simplify the expression: 2(4 + 6f) plz help this is my end of the year assesment Thanks!

julia-pushkina [17]

Answer:

8+12f

hope this helps

have a good day :)

Step-by-step explanation:

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2 years ago

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The front view of a recycle bin is shaped like a trapezoid. What is the measure of the remaining angle? 72° 144° 198° 252°

Likurg_2 [28]

Answer: 72°

Step-by-step explanation:

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2 years ago

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A sphere has a volume of 288 pi in^3. Find the surface area, Express your answer in pi.

Tpy6a [65]

Sphere Volume = <span> 4/3 • <span>π <span>• r³
r^3 = sphere volume / (4/3 * PI)
r^3 = 288*PI / (4/3 * PI)
</span></span></span><span>r^3 = 288 / (4/3)
</span>r^3 = 216
r = 6 inches

Sphere Surface Area = <span> 4 • <span>π <span>• r²
</span></span></span>
Sphere Surface Area = 4 * PI * 36

Sphere Surface Area = <span> <span> <span> 452.389 square inches

</span></span></span>

4 0

2 years ago

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Determine the projection of w onto u.

irina [24]

Answer:

A.6.2i-4.2 j

Step-by-step explanation:

We are given that

$u=9i-6j$

$v=-3i-2j$

$w=19i+15j$

We have to find the projection of w on to u.

The project of vector a on b

= $\frac{a\cdot b}{\mid b\mid^2}b$

$w.u=(19i+15j)\cdot (9i-6j)=171-90=81$

$\mid u\mid=\sqrt{x^2+y^2}=\sqrt{9^2+(-6)^2}=\sqrt{117}$

Using the formula

The projection of w on to u

$=\frac{u\cdot w}{\mid u\mid^2}(u)=\frac{81}{117}(9i-6j)$

The projection of w on to u=6.2i-4.2j

Hence, option A is true.

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2 years ago

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Mei Ling has 200 coins. 25% of these coins are $1 coins. She wants to increase the number of $1 coins to 40%. How many $1 coins

ANTONII [103]

Go ask your teacher their your best cheat sheet

7 0

1 year ago

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