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Sidana [21]
2 years ago
15

I need help with these two please and tysm

Mathematics
1 answer:
Serhud [2]2 years ago
5 0
Ok so for the first one:
-We know that the 4 angles add up to 360
-3 of the angles are given
-To find the fourth we simply subtract the sum of the 3 angles from 360.

Equation: 120+ 100+ 100 + x = 360
= 320+x= 360

Now by making x the subject
x= 360 - 320
= 40 degrees

The second one follows the same method

150+ 77+ 48+ x =360
275 +x = 360
x= 360-275
x= 85
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PLEASE HELP!!!! attached photo
alisha [4.7K]

Answer:

(-1, -2.5)

Step-by-step explanation:

The midpoint formula is just basicallyadding both  of the x values and then dividing the sum of them by 2, after that you will be adding both y values and then dividing them by 2, then you will get the midpoint x and y coordinate values. You can look up midpoint formula on google to see how it's actually written. You have to make sure to add correctly when you are using the negative numbers, because they can actually turn the equations into subtraction. Keep in mind, it can beconfusing sometimes when you are working with positive and negative numbers together. So make sure to just double check your work and also to make sure you added correctly.

<u><em>Brainliest please, I need a few more :D</em></u>

8 0
3 years ago
1 point
WARRIOR [948]
59 is an outlier it's not in the 70s
8 0
2 years ago
Z2 + (2j – 3)z + (5 – j) = 0
BARSIC [14]

Answer:

2z+(2j-3)z+(5-j)=0

2z +2jz-3z+5-j=0

2z-3z+2jz-j=-5

-z+2jz-j=-5

2jz-z-j=-5

I hope this help

4 0
2 years ago
Let f(x) = x2 − 3x − 7. Find f(−3).
MrRa [10]
Answer is:
f(-3) = 11
5 0
2 years ago
Read 2 more answers
10 POINTS!! Made myself broke with my last two questions!
Svet_ta [14]

Answer:

D

Step-by-step explanation:

The radius r is the distance from the centre to a point on the circle.

Calculate r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (- 5, - 12)

r = \sqrt{(-5-0)^2+(-12-0)^2}

  = \sqrt{(-5)^2+(-12)^2}

  = \sqrt{25+144}

  = \sqrt{169}

  = 13 → D

4 0
3 years ago
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