3 years ago

PLZZZ I WILL MARK BRAINLIEST !!!!

Mathematics

2 answers:

Llana [10]3 years ago

6 0

Answer:

Your answer is b

Step-by-step explanation:

bonufazy [111]3 years ago

5 0

Answer:

Step-by-step explanation:

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I know this is a simple question but i am confused hah, can someone help me

zloy xaker [14]

Answer:

469.875 square feet

Step-by-step explanation:

All you have to do for this question is multiply 3.75 bags of soil * 125.3 feet per bag.

$3.75 * 125.3 = 469.875$ square feet

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3 years ago

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Factorise a^2-4ab+5b^2-c^2+6bc

Gennadij [26K]

There is no way this is a middle school question

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3 years ago

5x2 +14x = 3 How do you complete the square

katovenus [111]

If I’m correct negative one half

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4 years ago

What does y equal?

tensa zangetsu [6.8K]

Answer:

$y=-4x+17$

Step-by-step explanation:

$\begin{pmatrix}4&1\end{pmatrix}\quad \mathrm{and}\quad \begin{pmatrix}2&9\end{pmatrix}$

$\mathrm{Computing\:dot\:product\:of\:two\:vectors}:\quad \left(x_1,\:\:\ldots ,\:\:x_n\right)\cdot \left(y,\:\:\ldots ,\:\:y_n\right)=\sum _{i=1}^nx_iy_i$

$=4\cdot \:2+1\cdot \:9$

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3 years ago

Determine the kinetic energy of a 100-kg roller coaster car that is moving with a speed of 20.0/ms.

rjkz [21]

Answer:

The kinetic energy is 20,000\ J

Step-by-step explanation:

The kinetic energy of a body is defined as:

$k = \frac{1}{2}ms ^ 2$

Where m is the mass of the roller coaster car

s is the speed and k is the kinetic energy

We know that $s = 20\ m/s$

$m = 100\ kg$

Then the kinetic energy of the roller coaster car is:

$k = \frac{1}{2}(100)(20) ^ 2\\\\k = 50(20) ^ 2\\\\k = 50 * 400\\\\k = 20,000\ J$

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3 years ago