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Bingel [31]
3 years ago
9

Need help with #1 please it’s algebra!

Mathematics
2 answers:
mel-nik [20]3 years ago
4 0

Answer:

145°

Step-by-step explanation:

The angle is 90°+55°=145°

sashaice [31]3 years ago
4 0

Answer: 145°

Step-by-step explanation:

The angle of straight lines is always 180°, so I took 180 and subtracted 55 from it, and then 90 to get 35. I got 90 because the x and y axis are perpendicular to each other, and the angle between perpendicular lines is always 90. 35° is the angle of the small un marked section to the left of the circles, so to get the angle of the circle-like line, I did 180-35 to get 145°.

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Y = -2x + 2 y = 5x + 9​
WITCHER [35]
X=-1 y=4 hope it helps
8 0
2 years ago
Which set of ordered pairs gives the polygon shown?
makvit [3.9K]
The correct answer is B.

Explanation
Since each interval mark is 1/4 of a unit, we will write this as 0.25.  For the first point, 4 interval marks to the left of the y-axis makes it a negative number; 4(0.25) = 1; this makes the x-coordinate of this point -1.  2 interval marks above the x-axis makes it positive; 2(0.25) = 0.5; this makes the y-coordinate 0.5.  This makes the first ordered pair (-1, 0.5).

The second point is on the y-axis.  This makes the x-coordinate 0.  It is 5 intervals above the x-axis; this makes it positive.  5(0.25) = 1.25 will be the y-coordinate, making the point (0, 1.25).

The third point is 3 intervals to the right of the y-axis; this makes it positive, and 3(0.25)=0.75 for the x-coordinate.  It is 3 intervals below the x-axis; this makes it negative, and 3(0.25) = 0.75, making the y-coordinate -0.75.  This puts the third point at (0.75, -0.75).
7 0
3 years ago
Guy Please Help Me, I Will Give U An Award If U Give Me The Right Answer And Not Any Link, Just The Answer.
disa [49]

Answer:

It is not a function.

Step-by-step explanation:

This is what we call a mapping;

Functions do not give multiple output values for a given input value;

As we can see, the input 2 produces an output of 20 and 40, therefore we can tell this is not a function.

3 0
2 years ago
Read 2 more answers
Do 9/11 and 36/33 form a proportion
satela [25.4K]

Answer:

Nope!

Step-by-step explanation:

No, because 9 x 4 = 36, whereas 11 x 3 = 33.

Hope that helps!

6 0
3 years ago
Read 2 more answers
At the moment a certain medicine is injected, its concentration in the bloodstream is 120 milligrams per liter.
igomit [66]

Answer:

c(t) = 120 [0.7]^{t}

Step-by-step explanation:

At the moment a certain medicine is injected, its concentration in the bloodstream is 120 milligrams per liter.

From that moment forward, the medicine's concentration drops by 30% each hour.

Therefore, the medicine concentration c(t) in mg/liters after t hours will be modeled as

c(t) = c(0) [1 - \frac{30}{100}]^{t}

⇒ c(t) = c(0) [1 - 0.3]^{t} 

⇒c(t) = 120 [0.7]^{t} . (Answer)

7 0
3 years ago
Read 2 more answers
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