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tensa zangetsu [6.8K]
3 years ago
13

6. When x = 2, 3x – 1= -

Mathematics
1 answer:
AlekseyPX3 years ago
6 0

Answer:

5

Step-by-step explanation:

3x - 1 = 3(2) - 1

         = 6 - 1

         = 5

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What is the length of BC?
Marat540 [252]

Answer:

x = 22, The length of BC is 22

Step-by-step explanation:

It is shown that angle ACB and angle ABC are congruent (The measure of angles are the same) in the picture. Since the angles are congruent, we can say that AC = AB because of base angle theorem converse. We can then substitute the given numbers in for AC and AB. We would then get 2x - 24 = x - 2. If you solve, you would get that x = 22 (The length of BC is 22).

7 0
3 years ago
Write the standard form of the line that passes through (-1,-3) and (2,1).
kobusy [5.1K]

Answer:

Step-by-step explanation:

\mathrm{Line\:passing\:through\:}\left(-1,\:-3\right)\mathrm{,\:}\left(2,\:1\right)\\\\\mathrm{Find\:the\:line\:}\\\mathbf{y=mx+b}\mathrm{\:passing\:through\:}\left(-1,\:-3\right)\mathrm{,\:}\left(2,\:1\right)\\\\\mathrm{Compute\:the\:slope\:}\left(-1,\:-3\right),\:\left(2,\:1\right):\quad \\m=\frac{4}{3}\\\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(-1,\:-3\right),\:\left(x_2,\:y_2\right)\\\left\\

\\m=\frac{1-\left(-3\right)}{2-\left(-1\right)}\\\\Refine\\\\m=\frac{4}{3}\\\\\mathrm{Compute\:the\:}y\mathrm{\:intercept}:\quad b=-\frac{5}{3}\\\\y=\frac{4}{3}x-\frac{5}{3}\\

Convert equation to standard form

y - \frac{4}{3} x + \frac{5}{3} = 0\\\\Multiply \:through\: by\: 3;\\\\3\times (y - \frac{4}{3} x + \frac{5}{3} )=0\\\\3y -4x+5 = 0\\Arrange\:n\:form\:of \:;\\Ax +By = C\\\\-4x +3y =-5

5 0
4 years ago
A line passes through the points (–1, –5) and (4, 5). The point (a, 1) is also on the line.
leva [86]
Find the equation of the line through <span>the points (–1, –5) and (4, 5).  First, find the slope:  m = rise / run = 5/10 = 1/2.

Then the equation is y-5=(1/2)(x-4).  If (a,1) is on this line, (a,1) must satisfy the given equation.  Let y=1 and solve for x:

1-5 = (1/2)(x-4)   Mult both sides by 2 to get -2 = x-4.   Then x = -4+2 = -2

So (-2,1) is also on the line.</span>
4 0
4 years ago
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Glenna needs to get 60 points in the next round to win the game. What is the least number of cards Glenna needs to be guaranteed
sergij07 [2.7K]

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it needs to be at least 20 to win.

Step-by-step explanation:

6 0
3 years ago
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Identify the statement that represents the given algebraic expression.
ollegr [7]

Answer:

n is -32

Step-by-step explanation:

- 17 \times 2 \: equals \:  - 32 \\  - 32 \div 2 \: equals \:  - 17

8 0
3 years ago
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