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zubka84 [21]
3 years ago
5

-6x -8y = 28 6х + 4y =-28 would this be infinite many solutions or no solutions?

Mathematics
1 answer:
blondinia [14]3 years ago
5 0
-6x -8y = 28
6х + 4y =-28

would this be infinite many solutions or no solutions?
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How many real roots does the function
icang [17]

Answer:

Option C is correct i.e. 2.

Step-by-step explanation:

Given the function is f(x) = x² +8x -2.

We can compare it with general quadratic expression i.e. ax² +bx +c.

Then a = 1, b = 8, c = -2.

We can find the number of real root by finding discriminant of the equation ax² +bx +c =0 as follows:-

D = b² -4ac

D = 8² -4*1*-2

D = 64 +8

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When D is a positive value, then we have two real roots of the equation.

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6 0
3 years ago
Blood is a buffer solution. When carbon dioxide is absorbed into the bloodstream, it produces carbonic acid and lowers the pH. T
Irina18 [472]

Answer:

x ≅ 20.10 torr

Step-by-step explanation:

Given that the equation which models blood pH in the question is;

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where;

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x = partial pressure of carbon dioxide in arterial blood, measured in torr.

we are asked to find (x)

In order to do that, we use the given equation:

pH(x)=6.1+log(800/x)

since pH = 7.7

7.7 = 6.1 + log (800/x)

7.7 - 6.1 =  log (800/x)

1.6 =  log (800/x)

10^{1.6}= \frac{800}{x}

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x ≅ 20.10 torr

4 0
3 years ago
How many times as large 12 is than 2
mina [271]

Answer:

12 is 6 times larger than 2

Step-by-step explanation:

2*6=12

4 0
4 years ago
Read 2 more answers
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Alenkasestr [34]
1:
Length: 7
Width:2
Perimeter: 18

2:
Length: 5
Width: 2.8
Perimeter: 15.6
8 0
3 years ago
Figure ABCD is dilated by a scale factor of 1/3. If point B is at (6,-3), where will point B’ be located
Lesechka [4]

Answer:

Step-by-step explanation:

Multiply both numbers by 1/3. That is your new coordinates. (2, -1)

5 0
3 years ago
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