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belka [17]
3 years ago
7

Solve:

Mathematics
2 answers:
Delvig [45]3 years ago
4 0

Answer:

D. x=12/11 or x=32/11.

ziro4ka [17]3 years ago
3 0

Answer:

D) x=12/11 or x=32/11.

Step-by-step explanation:

because i just know math

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Jack's family went out to dinner at a diner. The total bill was $78.99. The
puteri [66]

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The tax was 5.13

Step-by-step explanation:

Take the amount and multiply by the tax rate

78.99 * 6.5 %

Change to a decimal

78.99 * .065

Round to the nearest cent

5.13

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Which graph represents the equation y = 3/4 x - 3
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Step-by-step explanation: you forgot to attach the file but it should look like this i think

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How many solutions does the system of equations have?
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Which expression is equivalent to (2x − 3)(x + 4) ?
sergey [27]

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Step-by-step explanation:

2x2 + 8x - 3x - 12

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The points A BC :(2, 2,1), :(1,1,3), :(2,0,5) − are the vertices of a right triangle. The radius of the sphere with center at th
ElenaW [278]

Answer:

r=1

Step-by-step explanation:

First we need to know the length of each side of the triangle, so we use the formula of the vector modulus:

|AB|= \sqrt{(b_{1}-a_{1})^{2}+(b_{2}-a_{2})^{2}+(b_{3}-a_{3})^{2}

By doing so, we find:

|AB|=\sqrt {6}\\|BC|=\sqrt {6}\\|AC|=2\sqrt {5}

With this we know that the triangle is not right, but, we assume the longest side as the hypotenuse of the problem.

As we have two equal sides, we know that the line between point |AB| and the center of the hypotenuse is perpendicular, therefore, we can calculate it using Pythagoras theorem:

|BC|^{2}=r^{2}+(\frac{|AC|}{2})^{2}\\\\r^{2}=|BC|^{2}-(\frac{|AC|}{2})^{2}\\\\r^{2}=(\sqrt{6})^{2}- (\frac{2\sqrt{5}}{2})^{2}\\\\r^{2}=6-5=1\\r=1

4 0
3 years ago
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