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Musya8 [376]
3 years ago
6

I need help with this question please !!

Mathematics
1 answer:
RSB [31]3 years ago
4 0

Answer:

100, because 180 - 50 - 90 = 40

The vertical angles theorem is applied, so now angle DCE is 40

And since CE = ED, its isosceles triangle, so base angles are equal, so 40 and 40.

180 - 80 = 100 = Angle E.

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Input in stand form the equation of the given line.
Daniel [21]

Answer:

  3x +8y = -17

Step-by-step explanation:

The point-slope equation is a good place to start.

  y -k = m(x -h) . . . . . equation through (h, k) with slope m

Filling in your numbers gives ...

  y +4 = -3/8(x -5)

Multiplying by 8, we get

  8y + 32 = -3x + 15

Adding 3x-32 puts this in standard form.

  3x + 8y = -17

_____

Standard form is ...

  ax +by = c

where a, b, c are mutually-prime integers and the leading coefficient is positive. (If a=0, the leading coefficient is b.)

8 0
3 years ago
Which represents the solution set of 5(x+5)<85?
Nostrana [21]

The answer is: x<12

Steps by steps

5(x+5)<85

Divide each term by 5 and simplify.

5(x+5)÷5<85÷5

Reduce the expression by cancelling the common factors.

x+5<85÷5

Divide 85 by 5.

x+5<17

Move all terms NOT containing "x" to the right side of the inequality.

Subtract 5 from both sides of the inequality.

x<-5+17

Add -5 and 17.

=x<12

4 0
3 years ago
Alex has 21 marbles zach has 19 times as many marbles as alex how many marbles does zach have
Yuri [45]
Zach has 399 marbles because 21*19 is equal to 399.
4 0
3 years ago
4 - 1 1/4<br><br> A. 3 1/4<br> B. 3 3/4<br> C. 2 3/4<br> D. 2 1/4
AleksAgata [21]
The answer to this question is c. 2 3/4
6 0
3 years ago
Read 2 more answers
How do i graph a quadratic function
kirill [66]

I normally use a graphing calculator, but if you need to graph by hand I normally make a table with the x-values of -5 to 5 and plug in those range of x-values to graph the dots on the plot.

For example, if the function was x^2, I would want to start with a table, and plug in my x-values to given formula as I go through each x.

x = -5 then y = (-5)^{2} =25

x = -4 then y = (-4)^{2} =16

x = -3 then y = (-3)^{2} =9

x = -2 then y = (-2)^{2} =4

x = -1 then y = (-1)^{2} =1

x = 0 then y = 0

x = 1 then y = (1)^{2} =1

x = 2 then y = (2)^{2} =4

x = 3 then y = (3)^{2} =9

x = 4 then y = (4)^{2} =16

x = 5 then y = (5)^{2} =25

Of course you don't have to use for the x-values -5 to 5 if it's too long. At least 5 points should be made on the graph to improve accuracy. Other things like max, min, y-intercept, slope, x-intercept, etc all matter when graphing but if you were to just look at how to draw the basic functions first and how they look like, everything else will come naturally.

Now that the table of x and y values are made, you just need to plot this on a graph and connect the dots. The rest of the graph can be sketched to be an estimate of what the other values of x would possibly be equal to. As long as the bottom points of x^2 is complete and accurate the rest is drawn as close as you can make it, if that makes sense...

Hope that helps!

4 0
4 years ago
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