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3 years ago

Solve the system of equations.

1 answer:

8 0

$\left\{\begin{array}{ccc}2x-3y=16&|\cdot2\\3x+2y=11&|\cdot3\end{array}\right\\\underline{+\left\{\begin{array}{ccc}4x-6y=32\\9x+6y=33\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad13x=65\qquad|:13\\.\qquad x=5\\\\\text{put the value of x to the second equation}\\\\3(5)+2y=11\\15+2y=11\qquad|-15\\2y=-4\qquad|:2\\y=-2\\\\Answer:\ B)\ (5,\ -2).$

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X ²-12x+36=0 <br> x= ? <br> please help fast im doing a test <br> i will give brainleist

Luba_88 [7]

Answer x=6

(x-6)^2=0 using a^2-2ab+b^2=(a-b)^2, factor the expression

x-6=0 the only was an exponetiation can be 0 is when the base equals 0

move the constant to the right hand side and change its sign

ANSWER X=6

5 0

3 years ago

Read 2 more answers

A clock has a diameter of 16 inches. how far does the hour hand travel during 5 hours? use 3.14 for pi.

valentina_108 [34]

Distance hour hand travel in 5 hours is 20.94 inches.

<h3>What is a diameter?</h3>

A diameter of a circle is any straight line segment that passes through the center of the circle and has endpoints on the circle in geometry.
It is also known as the circle's longest chord.
Both definitions apply to the diameter of a sphere.

To find the distance hour hand travel in 5 hours:

Let's say the hour hand completed one full round around the clock.
If this was the case, it would have been 2 $\pi$ ×8 inches around.
We know that the hour hand only traveled 5 hours around the clock rather than 12, thus our formula is 2 $\pi$ ×8×( 5/12 ).

Distance hour hand travel is 20.94 inches.

Therefore, the distance hour hand travel in 5 hours is 20.94 inches.

Know more diameter here:

brainly.com/question/390660

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8 0

2 years ago

Solve the formula V = pi r2h for r

Andrei [34K]

Answer:

$V=\pi \times r^{2}\times h\\\\\Longrightarrow V=r^{2}\times \left( \pi \times h\right) \\\\\Longrightarrow r^{2}=\frac{V}{\pi \times h} \\\\\Longrightarrow r=\sqrt{\frac{V}{\pi \times h} }$

6 0

1 year ago

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(-2 1/3 to the third power) divided by (1 7/8)

yuradex [85]

Answer:

-2744/405

Step-by-step explanation:

4 0

3 years ago

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May I please have help from anyone thank you so much !

Vanyuwa [196]

You’re solving for the volume of the cylinder. so the way you would do this is the area of the base of the cylinder (pi times radius squared) which in this case would be 3.14 x 10^2 which is 314. you would then multiply by h, the height, which here is 10. 314 x 10 is 3140.

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3 years ago