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3 years ago

Someone please help!! ASAP

Mathematics

1 answer:

prohojiy [21]3 years ago

7 0

Answer:

x=−5 and y=1

Step-by-step explanation:

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ABCDEFGHIJ is a regular decagon and the measure of <D is 144º. What is the measure of <A?

AnnyKZ [126]

Answer:

1. 144⁰

2. 60⁰

Step-by-step explanation:

The formula to find the measure of the interior angles of a regular polygon is:

m< = (n - 2) • 180/n where n = the number of sides

For a decagon, there are 10 sides.

m< = (10-2) • 180/10 = 144°

A regular polygon/equilateral triangle is defined as having equal sides and angles.

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3 years ago

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Write the equation and slope intercept form y=mx+b

Nookie1986 [14]

Here is your answer is slope-intercept form: y=-2x-15

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2 years ago

Loni needs between 3.5 and 7.2 volts of energy, not inclusive, to make an experiment work correctly. Write a compound inequality

Evgesh-ka [11]

Answer:

The compound inequality that shows the voltage amount the necessary range is $3.5$

Step-by-step explanation:

Loni needs between 3.5 and 7.2 volts of energy, not inclusive, to make an experiment work correctly.

That means, the voltage amount should be either greater than 3.5 volts or less than 7.2 volts.

Suppose, the amount of voltage is $V$ volts to make the experiment work correctly.

Now, Voltage amount is greater than 3.5 volts means: $V>3.5$ or $3.5$

and voltage amount is less than 7.2 volts means: $V$

Thus, the compound inequality by combining the above two inequalities will be: $3.5$

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3 years ago

What is the y and x? write an equation.

solong [7]

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~{{ 1993}} &,&{{ 14220}}~) 
% (c,d)
&&(~{{ 1997}} &,&{{ 9780}}~)
\end{array}
\\\\\\
% slope = m
slope \implies 
\cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{9780-14220}{1997-1993}\implies \cfrac{-4440}{4}\implies -1110$

$\bf \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-14220=-1110(x-1993)
\\\\\\
y-14220=-1110x+2212230\implies y=-1110x+2226450$

5 0

3 years ago

Please helpp middle school math suppose 4<a<7. find all the possible values of 15-2a

bixtya [17]

9514 1404 393

Answer:

1 < 15 -2a < 7

Step-by-step explanation:

There are a couple of ways you can do this.

1) Put the minimum and maximum values of a into the expression to see what its corresponding values are:

15-2a for a=4:

15-2(4) = 7

15-2a for a=7:

15-2(7) = 1

Then ...

1 < 15-2a < 7

2) Solve for a in terms of the value of 15-2a, then impose the limits on a.

x = 15 -2a

2a = 15 -x

a = (15 -x)/2

Now, impose the given limits:

4 < (15 -x)/2 < 7

8 < 15 -x < 14 . . . multiply by 2

-7 < -x < -1 . . . . . . subtract 15

7 > x > 1 . . . . . . . . multiply by -1

1 < 15-2a < 7 . . . . . use x=15-2a

_____

The vertical extent of the attached graph is the range of possible values of 15-2a. It goes from 1 to 7.

8 0

3 years ago