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alexira [117]
3 years ago
9

Ehat is the discriminant of 9x2+2=10x

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
4 0

2+2=1x


4=x is the simplified version

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35 solve the following syste
blondinia [14]

Part A: The solution is (-0.923,5.692)

Part B: The point (3,7) is not in the solution set.

Explanation:

Part A: The given inequalities are 3 x+4 y>20 and x

The solution can be determined by solving the two inequalities by substitution method.

Changing inequalities to equality, we have,

x=3 y-18 and 3 x+4 y=20

Let us substitute x=3 y-18 in the equation 3 x+4 y=20 , we get,

3 (3y-18)+4 y=20

   9y-54+4y=20

                  13y=74

                     y=5.692

Substituting y=5.692 in x=3 y-18, we get,

x=3 (5.692)-18

  =17.076-18

x=-0.923

Thus, the solution set is (-0.923,5.692)

Part B: Now, we shall determine whether the point (3,7) is in the solution set.

Let us substitute the point (3,7) in the inequalities 3 x+4 y>20 and x, we get,

3 (3)+4 (7)>20

      9+28>20

            37>20

Also, substituting (3,7) in x, we get,

3

3

3

Since, the point (3,7) does not satisfy one of the inequality x , the solution set does not contain the point (3,7)

Thus, the point (3,7) is not in the solution set.

8 0
2 years ago
Geometry help on questions 1,2,3
Semmy [17]
The exact value of d is 44 \sqrt{2}

a. 62
b. 62.2
c. 62.23
4 0
3 years ago
Mr. Roosevelt has 48 nails that each weigh 1.35 ounces. What is the weight of these nails in ounces?
sammy [17]
Answer 64.8

48x1.35=64.8
6 0
3 years ago
Read 2 more answers
Which symbol correctly compares the two angle measures? pi/4 radians_____30°
Thepotemich [5.8K]

Answer:

B. \frac{\pi }{4} Rad>30^{0}

Step-by-step explanation:

\frac{\pi }{4} Rad=(180/4)^{0} =45^{0}

Hope this helps

6 0
2 years ago
A scientist records a temperature of 234.566°c in an experiment. the temperature then falls 48.01°
Vinil7 [7]
I believe the answer is 186.556 degrees celcius
8 0
3 years ago
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