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schepotkina [342]
3 years ago
8

PLEASE HELP WILL MARK BRAINLIEST!!!!

Mathematics
1 answer:
Nutka1998 [239]3 years ago
7 0

Answer:

Step-by-step explanation:

a+c=300

3a+c=2100

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Need help with this too
CaHeK987 [17]

Answer:

grade ano kanaba? nang malaman ko para masagutan ko

6 0
3 years ago
The sum of 3 times a number and 2 is the same as the difference of the number and 8.
Novay_Z [31]

Hey there!!

Equation -

3x + 2 = x - 8

2x = - 10

x = -5

The number is -5

Hope my answer helps!

4 0
3 years ago
Triangle PQR has vertices P(4,-1),Q(-2,7), and R(9,9). Find an equation of the median and altitude from R.
Reil [10]
If we are drawing altitude from R the PQ will be base of this triangle. So we can say Median from R will cut on Midpoint of PQ. So firstly we will find mid point of PQ Which is S given as below:
P(4,-1) , Q (-2,7)

Let Co-ordinate of S is (x,y)
So x =  \frac{x_1+x_2}{2}
x =  \frac{4-2}{2} =  \frac{2}{2} = 1

y =  \frac{y_1+y_2}{2}
y =  \frac{-1+7}{2} =  \frac{6}{2}= 3
So midpoint of PQ is S(1,3).

Now we can find equation of RS
Co-ordinate of R is (9,9) and and S is (1,3).

In general equation of line from two point (x_1 , y_1) and (x_2,y_2) is
(y-y_1) =  \frac{y_2-y_1}{x__2-x_1}(x-x_1)

So equation of RS is

(y-9) =  \frac{9-3}{9-1} (x-1)
(y-9) =  \frac{6}{8}(x-1)
8(y-9) = 6(x-1)
8y-72 = 6x - 6
-72+6 = 6x - 8y
-66 = 6x-8y

So the equation of median is 6x - 8y = -66

5 0
3 years ago
Read 2 more answers
Classify the following number 3.5
11Alexandr11 [23.1K]

Answer:


Step-by-step explanation:


4 0
4 years ago
Equations of lines in slope intercept form<br> Through: (1,5) m=2
Mrac [35]

Answer:

The equation would be

y = 2x + 3

5 0
4 years ago
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