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lapo4ka [179]
3 years ago
9

Equation practice with vertical angles

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Answer:

x = 7

Step-by-step explanation:

Vertical angles are congruent (equal). Therefore, we can set the values equal to each other in an equation to solve for x.

7x + 68 = 2x + 103

5x + 68 = 103

5x = 35

x = 7

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3 years ago
Evaluate UV if possible.
Mnenie [13.5K]

Answer: B

Step-by-step explanation:

Multiply U and V:

\begin{pmatrix}-9&1&0\\ \:4&0&2\\ \:0&1&5\end{pmatrix}\begin{pmatrix}2\\ \:-2\\ \:1\end{pmatrix}

\mathrm{Multiply \ the \ rows \ of \ the \ first \ matrix \ by \ the \ columns  \ of \ the \ second \ matrix:}

\begin{aligned}&\left(\begin{array}{ccc}-9 & 1 & 0\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=(-9) \cdot 2+1 \cdot(-2)+0 \cdot 1 \\&\left(\begin{array}{ccc}4 & 0 & 2\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=4 \cdot 2+0 \cdot(-2)+2 \cdot 1 \\&\left(\begin{array}{lll}0 & 1 & 5\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=0 \cdot 2+1 \cdot(-2)+5 \cdot 1\end{aligned}

=\begin{pmatrix}\left(-9\right)\cdot \:2+1\cdot \left(-2\right)+0\cdot \:1\\ 4\cdot \:2+0\cdot \left(-2\right)+2\cdot \:1\\ 0\cdot \:2+1\cdot \left(-2\right)+5\cdot \:1\end{pmatrix}

\mathrm{Simplify\:each\:part:}

=\begin{pmatrix}-20\\ 10\\ 3\end{pmatrix}

Therefore, the correct answer is B

5 0
3 years ago
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just olya [345]

Answer:

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solong [7]
For these questions it's asking you to substitute the value into the equation.
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In this case: 26= 35 -9 is correct.
So your answer is true.
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3 years ago
5. What name is given to the price dealerships pay for vehicles?
liberstina [14]

Answer:

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Step-by-step explanation:

The actual price paid to the manufacturer or distributor by the end-customer retailer, which is known as the invoice price. However, in many industries, the "invoice cost" actually varies from the "net purchase cost," or the actual price of a product. -Wikipedia (I am not sponsoring I am stating my source)

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