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Agata [3.3K]
3 years ago
10

Help please!!!! Solve the system by graphing

Mathematics
1 answer:
kotegsom [21]3 years ago
7 0

Answer:

picture of graph is attached. lmk if ur getting these right. its been a while since I've dont this

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PLEASE ANSWER CORRECTLY! WILL GIVE BRAINLIEST!
vaieri [72.5K]

Answer:

0.7938

Step-by-step explanation:

z1 = (125-100)/15 = 1.667

P( < 125) = 0.9522

z2 = (85-100)/15 = -1

P( > 85) = 0.8413

0.9522 + 0.8413 - 1 = 0.7935

4 0
3 years ago
I need help with number 13, PLEASE. Extra points!
gladu [14]

Answer:

90°, 270°

Step-by-step explanation:

2r sin(Ф/2) = c

2r sin (Ф/2) = √2r

divide both sides by 2r

sin (Ф/2) = √2r/2r

sin(Ф/2) = √2/2

From the unit circle sin is √2/2 at 45°, and 135°

so Ф/2 = 45

Ф=90°

and Ф/2 = 135

Ф= 270°

5 0
3 years ago
Which word describes the slope of the line?<br> positive<br> negative<br> zero<br> undefined
valkas [14]

Answer:

If it is horizontal then it is zero, if it is vertical then it is undefined

Step-by-step explanation:

horizontal=  <------------->

             ^

vertical=|    (up and down)

             v

4 0
3 years ago
Read 2 more answers
You’re making to recipes one recipe calls for 2 1/3 cups of flour the other recipe calls for 1 1/4 cups of flour how much flour
Rudiy27
The answer to your question is 5 1/12
6 0
2 years ago
Find the discriminant of the equation. x2 + 3x - 4 = 0
ivann1987 [24]

Please use " ^ " to indicate exponentiation: x^2 + 3x - 4 = 0

Here, a = 1, b = 3 and c = -4.

The formula for the discriminant is b^2 - 4(a)(c).

Substituting the given values of a, b and c, we get:

(3)^2 - 4(1)(-4)

Evaluating this, we get 9 + 16 = 25.

The discriminant is 25.

-3 plus or minus √25

Taking this further, x = ------------------------------------

2

-3 plus or minus 5

or: x = -------------------------------- => {-4, 1} (solutions)

2

5 0
3 years ago
Read 2 more answers
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