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Kryger [21]
3 years ago
8

Tìm x,y thỏa mãn: x^2-2xy+3y-5x+7=0

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0

I think there's an error with this question. Mind to check it back and tell me the detail?

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Write 2.4 x 10 to the power of -3 in standard form
fomenos

Answer:

Step-by-step explanation:

2.4 \times10^{-3}=\frac{24}{10} \times \frac{1}{10^3} =\frac{24}{10^4} =\frac{24}{10000} =0.0024

6 0
3 years ago
in a coordinate plane the midpoint of AB is (4,-3) and A has coordinate (1,5). if B has coordinate (x,y) find the value x+y​
Aloiza [94]

Answer:

Please check the explanation.

Step-by-step explanation:

The midpoint (a, b) of line joining points (x₁, y₁) and (x₂, y₂)

a = x₁ + x₂ / 2

b = y₁ + y₂ / 2

Given that the midpoint of AB is (4, -3).

i.e. (a, b) = (4, -3)

Given that A has coordinate (1, 5).

i.e. (x₁, y₁) = (1, 5)

We have to determine the coordinates of B.

i.e. (x₂, y₂) = B

Thus,

4 = (1 + x₂)/2

(1 + x₂) = 4 × 2

1 + x₂ = 8

x₂ = 7

and

-3 = (5 + y₂)/2

(5 + y₂) = -3 × 2

5 + y₂ = -6

y₂ = -11

so (x₂, y₂) = (7, -3) = B

Thus, the coordinates of B = (x₂, y₂)  = (7, -3)

Therefore,

x₂ + y₂ = 7 + (-3)

          = 7 - 3

          = 4

Hence, the value of x₂ + y₂ = 4

4 0
3 years ago
6(4x+5)=3(x+8)+3 round to the nearest hundredth
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There is supposed to be a bar on the top like a line but I couldn’t put it here so u can put it urself if ur writing it on paper
5 0
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A students claims that 8 to the 3rd power and 8 to the negative 5th power is greater than 1. Explain whether the student is corr
Serga [27]
<span>7s over 5t to the negative 3rd power 2 to the negative 3rd power times X to the 2nd power times Z to the negative 7th power 7s to the zero power times T to the negative 5th power over 2 to the negative 1st power times M to the 2nd power If you would please simplify these </span>
8 0
3 years ago
Please help me correct answer if you said it correct I will give you brainlist please!​
oee [108]
The answer would be 5 like they said
5 0
3 years ago
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