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andriy [413]
2 years ago
6

I need help pls answer this!!!

Mathematics
2 answers:
Digiron [165]2 years ago
8 0

Answer:

90

Step-by-step explanation:

SSSSS [86.1K]2 years ago
4 0
90 is the answer.....................
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Find the value of 7×+2y when x=2and y=-9
jeka94
The answer should be -4,
7x2=14
2x-9=-18
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3 years ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
likoan [24]

Answer:

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, x^2+4=6x

This can be written as ,  x^2-6x+4=0

We have to solve using quadratic formula,

For a given quadratic equation ax^2+bx+c=0 we can find roots using,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}  ...........(1)

Where,  \sqrt{b^2-4ac} is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}

\Rightarrow x=\frac{6\pm\sqrt{20}}{2}

\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}

\Rightarrow x={3\pm \sqrt{5}}

\Rightarrow x_1={3+\sqrt{5}} and \Rightarrow x_2={3-\sqrt{5}}

We know \sqrt{5}=2.23607(approx)

Substitute, we get,

\Rightarrow x_1={3+2.23607}(approx) and \Rightarrow x_2={3-2.23607}(approx)

\Rightarrow x_1={5.23607}(approx) and \Rightarrow x_2=0.76393}(approx)

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

7 0
2 years ago
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Plz help me ASAP! Answer the question in the picture below. Explain all of your steps.
ruslelena [56]

Answer:

175 hope this helps


Step-by-step explanation:

Add 72 and 113

then subtract that from 360


8 0
3 years ago
11. Jordis took a test with a total of 90 questions. His teacher told him that 4 points
max2010maxim [7]

Answer:

72

Step-by-step explanation:

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Suppose 123 people voted for Danny. If 55 of the votes were from girls, what would be the ratio of votes from girls to votes fro
MakcuM [25]

Answer:

68 to 55 hope this helps

Step-by-step explanation:

3 0
3 years ago
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