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creativ13 [48]
2 years ago
13

I need help with this question (answer choices 15, 5, and 12)

Mathematics
1 answer:
Vinvika [58]2 years ago
8 0

Answer:

x = 15

Step-by-step explanation:

the opposite angles of a cyclic quadrilateral sum to 180° , then

6x + 20 + 3x + 25 = 180 , that is

9x + 45 = 180 ( subtract 45 from both sides )

9x = 135 ( divide both sides by 9 )

x = 15

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0.25e − 14 = 26 <br> please anwser i need a tutor for math
Scorpion4ik [409]

0.25e − 14 = 26 Then you add 14 from both sides

0.25e=40 Then you divide both sides by 0.25

e=160

Then to check you work you do this:

0.25(160)-14=26

40-14=26

26=26 Correct!!!!

4 0
4 years ago
Read 2 more answers
The function f(x) is graphed on the coordinate plane.<br><br> What is f(-4)?
kati45 [8]
F(x) = 2x+1
f(-4) = 2(-4)+1
        = -8+1
        = -7

i hope it helps
7 0
3 years ago
Find all solutions of each equation on the interval 0 ≤ x&lt;2π.
Aleksandr [31]

Answer:

x = 0 \: or \:x =   \pi

Step-by-step explanation:

The given equation is

\tan^{2} (x) \sec^{2} (x)  + \sec^{2} (x)  - \tan^{2} (x) =  2

Subtract 2 from both sides and factor by grouping to get:

\sec^{2} (x)(\tan^{2} (x) + 2)  -1( \tan^{2} (x)  +  2)

(\tan^{2} (x) + 2) (\sec^{2} (x) - 1) = 0

By the zero product principle:

(\tan^{2} (x) + 2) = 0 \: or \:  (\sec^{2} (x) - 1) = 0

(\tan^{2} (x)  =  - 2 \: or \:  \sec^{2} (x)  =  1

When

\sec^{2} (x)  =  1 \implies\cos^{2} (x)  =  1

\implies \:  \cos(x)  =  \pm1

This implies

x = 0 \: or \:x =   \pi

When

{ \tan }^{2} (x) =  - 2

We have

\tan(x)  =  \pm \sqrt{ - 2}

hence x is not defined for all real numbers

6 0
3 years ago
Read 2 more answers
A soccer team played 160 games and won 65 percent of them. how many games did it win?
kolbaska11 [484]
Here is how to solve it.

65% of 160

 65/100(160)

=(65/100)(160/1)

=(13/20)(160/1)

=(13)(160)/(20)(1)

=2080/20

=104

Therefore they won 104 games! :D
4 0
4 years ago
Read 2 more answers
Explain why y +1 = 1.2(x+2) and y-5= 1.2(x – 3) represent the same line, despite having
andrew11 [14]

Answer:

You can manipulate both equations into y = mx + b format and end up with the same result of y = 1.2x + 1.4

Step-by-step explanation:

y + 1 = 1.2(x + 2)

y = 1.2x + 2.4 - 1

y = 1.2x + 1.4

y - 5 = 1.2(x - 3)

y = 1.2x - 3.6 + 5

y = 1.2x + 1.4

So essentially, they're the same equation but in different forms.

6 0
3 years ago
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