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Sphinxa [80]
3 years ago
13

Application Question:

Mathematics
1 answer:
Alika [10]3 years ago
7 0
When you add 4 to 25 you get 21 then subtract 11 and get 10 and then add 15 which is equal to 25 and then subtract 13.

the answer is 12
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Using the quadratic formula to solve 7x^2-x=7, what are the values of x?
ycow [4]
Quadratic equation is x= \frac{-b {\pm} \sqrt{ b^{2}-4ac}}{2a} WHEN 
a x^{2} +bx+c=0

So, to make this true subtract 7 from each side. 

The equation is now 7x^{2} - x - 7 = 0 

Values for a, b, and c: a = 7, b = -1, c = -7 

Plug these variables into the quadratic equation. 

x= \frac{1 {\pm} \sqrt{ -1^{2}-4*7*-7}}{2*-7} 

Square -1 to get 1 and multiply -4 x 7 x -7 to get 196. 

x= \frac{1 {\pm} \sqrt{1+196}}{2*-7}

Multiply 2 x -7 to get -14, the denominator, and add 1 to 196. 

x= \frac{1 {\pm} \sqrt{197}}{-14} 

Since 197 is not a square number, and I don't know if you want to leave it in radical form or not, I will just because it's easier to understand. 

Hope this helps!
8 0
3 years ago
Graph the equation:
PIT_PIT [208]
This is a slope intercept form problem! The equation would be modeled as in the image. It would be modeled as so because 2 is the y-intercept, meaning that is where we begin on the graph (the point location is (0,2). From there, we would move up 1 point and to the right 3 points because slope is represented by rise over run. Since 1/3 has a variable beside it, we know 1/3 is the slope. With that being said, the equation would be graphed by starting at (0,2) on the graph and moving up 1 and to the right 3 points each time. If you need any help, let me know and I will gladly assist you.

7 0
1 year ago
Celia made 3 and 1-half cups of rice. A serving of rice is 2-thirds cup. How many servings of rice did Celia make? A. 2 and 1-th
ss7ja [257]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is −3 2/3 ⋅ (−2 1/4) ?
Brums [2.3K]
11/3 x 9/4
Is 33/4 which is 8 1/4

Give me a thx if this helps
6 0
3 years ago
Read 2 more answers
SOMEONE DO THIS QUICKLY! ITS DUE IN AN HOUR
Mandarinka [93]

Answer:

10. Y=151°

Z=29°

X=29°

11.

y: 61°

X: 151°

z:119°

12.

y:125°

x:55°

z:55°

13.63°

14.115°

15.131°

16.X=13°

17.X=4°

18.X=21°

19= X=7°

20= X=12°

21= X=9

7 0
3 years ago
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