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MaRussiya [10]
3 years ago
6

Write the explicit formula for the sequence. -1, 4, -16, 64,... A) an = (4)(n-1) B) an = (-4)(n-1) C) an = -(4)(n-1) D) an = -(-

4)(n-1)
Mathematics
1 answer:
yulyashka [42]3 years ago
3 0

Answer:

A

Step-by-step explanation:


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The measure of ∠BCD is 120°. The measure of ∠ABC is 85°.
saveliy_v [14]

Answer:

Step-by-step explanation:

Chill out, what ya yellin' for?

Lay back, it's all been done before

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I like you the way you are

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And you're talking to me one on one, but you become

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4 0
3 years ago
What expression is equivalent to -5(x)+(-4)(-3)
azamat

Answer:-25+-12

Step-by-step explanation:so I made x value as 5 so I multiplied -5x5 and it's -25 then I multiplied -4x-7 and that's -12 so the equivalent expression for my way is -25+-12

6 0
3 years ago
A pool measuring 8 meters by 26 meters is surrounded by a path of uniform​ width, as shown in the figure. If the area of the poo
Ainat [17]
Let the width path be x.
Length of the outer rectangle = 26 + 2x.
Width of the outer rectangle = 8 +2x.

Combined Area = (2x + 26)*(2x + 8) = 1008

2x*(2x + 8) + 26*(2x + 8 ) = 1008

4x² + 16x + 52x + 208 = 1008

4x² + 68x + 208 - 1008 = 0
4x² + 68x - 800 = 0.          Divide through by 4.
x²  + 17x - 200 = 0 . This is a quadratic equation.

Multiply first and last coefficients:  1*-200 = -200

We look for two numbers that multiply to give -200, and add to give +17

Those two numbers are 25 and -8.

Check:   25*-8 = -200         25 + -8 = 17

We replace the middle term of +17x in the quadratic expression with 25x -8x


 x² +17x - 200 = 0     

x² + 25x - 8x - 200 = 0     

x(x + 25) - 8(x + 25) = 0

(x+25)(x -8) = 0

x + 25 = 0    or   x - 8 = 0

x = 0 -25              x = 0 + 8

x = -25                    x = 8

The width of the path can not be negative.

The only valid solution is x = 8.

The width of the path is 8 meters.
8 0
3 years ago
Which of the following are solutions to the graph
jarptica [38.1K]

Answer:

F. \displaystyle (2, 6)

C. \displaystyle (-1, 0)

B. \displaystyle (-2, -2)

Step-by-step explanation:

You first need to find the linear equation<em> </em>[in <em>Slope-Intercept</em><em> </em><em>Form</em><em> </em>of course] of this graph, which is \displaystyle y = 2x + 2.To do this, starting from the y-intercept of \displaystyle (0, 2),you do \displaystyle \frac{rise}{run}by either moving two blocks <em>south</em><em> </em>over one block <em>way</em><em> </em>or two blocks <em>north</em><em> </em>over<em> </em>one block <em>east</em> [<em>west</em><em> </em>and <em>south</em><em> </em>are negatives]. This will give you your <em>rate</em><em> </em><em>of</em><em> </em><em>change</em><em> </em>[<em>slope</em>] of 2.

* \displaystyle y = mx + b → Slope-Intercept Formula

I am joyous to assist you anytime.

3 0
3 years ago
When graphing a system (2 or more) inequalities, the solution set is where the shading on the graph overlaps.
dexar [7]
The Correct answer is true
5 0
3 years ago
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