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stira [4]
2 years ago
6

What does y equal? ​

Mathematics
1 answer:
tensa zangetsu [6.8K]2 years ago
5 0

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

=17

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Harlene tosses two number cubes. If a sum of 8 or 12 comes up, she gets 9 points. If not, she loses 2 points. What is the expect
Alisiya [41]
<span>It's easy enough. Solving looks like that: p(roll of 8)+p(roll of 12) =</span>\frac{5}{36} + \frac{1}{36} = \frac{1}{6} ; \frac{1}{6} *9 +\frac{5}{6}*2 = \frac{3}{2} - \frac{5}{3} = -\frac{1}{6} Hope everything is clear.
5 0
3 years ago
Read 2 more answers
Ratio 3 1/4 to 1 1/2 as a unit rate of 2 1/3
saw5 [17]

Answer:

True

Step-by-step explanation:

4 0
3 years ago
Higher Order Thinking a carpenter plans to extend the length of rectangular desk by 7 feet. Let x represent the desk's original
abruzzese [7]

Answer:

d. 9x + 63 and 63 square feet

Step-by-step explanation:

Given

Original

Length = x

Width = 9

Extended

Length = x + 7

Width = 9

Area = 9(x + 7)

Required

Determine an expression and the value of the extended area

First, we calculate the area of the original desk

A_1 = x * 9

A_1 = 9x

From the given parameters, we have:

Area = 9(x + 7) --- area of the new surface

Open bracket

Area = 9x + 63

The area of the new surface is the summation of the area of the original desk and the area of the extended portion (E)

So:

Area = A_1 + E

Make E the subject

E= Area - A_1

E= 9x + 63 - 9x

E= 63

Hence, the area of the extended portion is 63

7 0
2 years ago
Jerome usually uses 8 cups of water and 3 cups of drink mix. Tomorrow, there is a road race in town, however, and Jerome thinks
bija089 [108]

Answer:

8:3

Step-by-step explanation:

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3 years ago
Explain what defines direct variation. Then, check which of the following tables include directly proportional quantities x and
just olya [345]
Direct variation in mathematics is when two numbers are written in an equation where one of the numbers multiplied by a constant term to equal the other. 

In the table in the equation, we see direct variation.

<u>X</u>    <u>Y
</u>
<u></u>1     7
2     14
3     21
4     28

We can find the constant of the variation by dividing y by x. This constant should remain the same for all terms of x in the table with their corresponding y values.

y/x
7/1=7
14/2=7
21/3=7
28/4=7

As we can see, the values in the table all share a direct variation between x and y with the value 7.

This can be expressed in an equation: y = 7x.

6 0
3 years ago
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