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WINSTONCH [101]
3 years ago
7

Mathematics help. Solve photo question, please.

Mathematics
2 answers:
RoseWind [281]3 years ago
8 0
Just plug in the answer choices and see which one works.
(x,y)
 ^ ^
Plug in the x-value for x in the equation and do the same for y.

Let's try answer choice D (because I already know it's correct).
(1,-1)
  ^  ^
 x   y

The equation is: y-2x \leq -3
Plug in!

(-1)-2(1) \leq -3\\-3 \leq -3\\\\\sf\ Answer: D
fenix001 [56]3 years ago
3 0
We should substitute each and check in this case:
The maximum value can only be -3

is 4 - 2(2) ≤ -3 ? 
Lets check:
4 - 4 ≤ -3
0 ≤ -3          ⇔         this is wrong

The solution is the last one because:
-1 - 2(1) ≤ -3
-3 ≤ -3

(1,-1)
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∠A and ∠B are vertical angles. If m ∠A=(2x+26)∘ and ∠B=(3x−29)∘, then find the measure of ∠A.
Leya [2.2K]

The measure of angle (m ∠A) is 136°

<h3>Vertical angles theorem</h3>

From the question, we are to find the measure of angle A

From the given information, we have that

∠A and ∠B are vertical angles

Thus

∠A = ∠B

and

Also, from the given information,

m ∠A=(2x+26)°

and

m ∠B= (3x−29)°

∴ (2x+26)° = (3x−29)°

Now, solve for x

2x + 26 = 3x - 29

26 + 29 = 3x - 2x

55 = x

∴ x = 55

But measure of angle A is given by

m ∠A=(2x+26)°

Put the value of x into the equation,

m ∠A=(2(55)+26)°

m ∠A=(110+26)°

m ∠A = 136°

Hence, the measure of angle (m ∠A) is 136°

Learn more on Vertical angle theorem here: brainly.com/question/24839702

#SPJ1

6 0
2 years ago
What is the slope of a line that passes through the points (-5,-3) and (9,-6)
kipiarov [429]
To find the slope given two points, you need to subtract the two y values over the two x values
(-5,-3)  (9,-6)
-5 will be x1, and -3 will be y1. 9 will be x2, and -6 will be y2. You then need to put the numbers in the correct place in the equation.
y2-y1      -6-(-3)     -9
-------- =   -------- =  ----
x2-x1       9-(-5)     14
Now that we have the slope (-9/14) you can use one of the coordinates to find the value of b.
Let's use (9,-6).
-6=-9/14(9)+b
-6=-81/14+b
+81/14
b=-3/14
Your final equation is y=-9/15x-3/14


7 0
3 years ago
A=4pir^2 solving for pi
ycow [4]
Pie formula is 3.14
7 0
3 years ago
Read 2 more answers
I don’t know it can someone help me
tatiyna

Answer:

23

Step-by-step explanation:

supplementary angles: 180-85 = 95

95 = 5x-20 ( i forgot the name of the rule, something relating to same side interior angles i think)

115 = 5x

23= x

hope that helped

5 0
3 years ago
HELPPPPPP make sure your right !:)
makvit [3.9K]
To find your constant of variation, you just need to figure out what you multiply the x by in order to get f(x). In other words, what do you multiply the 3 by to get 6? What do you multiply the 7 by to get 14? Another way to think of it is to divide f(x) by the x to get your constant. 
4 0
3 years ago
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