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3 years ago

Pls help with these problems

Mathematics

1 answer:

babunello [35]3 years ago

4 0

Answer

(97, 73), x = 97

(13, -81), y = -81

(-91, -26) y = -26

(74, 25), x = 74

Step-by-step explanation

if it has an undefined slope, it is a vertical line with the equation x = (x value)

if it has a 0 slope, it is a horizontal line with the equation y = (y value)

undefined slope through (97, 73)

the x value is 97

x = 97

slope of 0 through (13, -81)

the y value is -81

y = -81

slope of 0 through (-91, -26)

the y value is -26

y = -26

undefined slope through (74, 25)

the x value is 74

x = 74

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zubka84 [21]

Answer:

Step-by-step explanation:

$\frac{\sqrt{x}+1 }{x-\sqrt{x}+1 }=\frac{\sqrt{x}+1}{(x+1)-\sqrt{x}}\\\\=\frac{(\sqrt{x}+1)([x+1]+\sqrt{x})}{([x+1]-\sqrt{x})+([x+1)+\sqrt{x}])}\\\\=\frac{\sqrt{x}*x+\sqrt{x}*1+\sqrt{x}*\sqrt{x}+1*x+1*1+1*\sqrt{x}}{(x+1)^{2}-(\sqrt{x})^{2}}\\\\\\=\frac{x\sqrt{x}+\sqrt{x}+x+1+x+\sqrt{x}}{x^{2}+2x+1-x}\\\\=\frac{x\sqrt{x}+2\sqrt{x}+2x+1}{x^{2}+x+1}\\\\$

8 0

3 years ago

Ok your very lucky if you see this..what’s 2+2 but you have to give reasoning

ANEK [815]

Answer:

4

Step-by-step explanation:

2 + 2 = 4

1 + 1 = 2 + 1 = 3 + 1 = 4

Don't know why I did this but ok.

4 0

3 years ago

Read 2 more answers

How to solve for a and b

murzikaleks [220]

$\bf \begin{cases}
3=a\cdot b^0\\
75=a\cdot b^2
\end{cases}\qquad b^0=1\implies 
\begin{cases}
3=a\cdot 1\implies 3=a\\
----------\\
75=a\cdot b^2\implies 75=3\cdot b^2\\\\
\frac{75}{3}=b^2\implies 25=b^2\\\\
\pm \sqrt{25}=b\implies \pm 5 = b
\end{cases}$

recall, anything raised to the 0, zero, power, is 1, with the sole exception of 0

8 0

4 years ago

What is the value of x here??

Alex777 [14]

6x-7 = 4x-1

collect the like terms:

6x-4x = -1+7

2x = 6

x = 6÷2

x = 3

3 0

3 years ago

Read 2 more answers

3x+4y=17.50 7x+1y=17.00

nikdorinn [45]

7x+1y = 17.00 can be simplified to y = -7x +17
-7x +17 can then be substituted for y in 3x+ 4y =17.50
3x+4(y) = 17.50
3x+ 4(-7x +17) = 17.50

From here you can solve for X
3x + 4(-7x +17) = 17.50
3x -28x + 68 = 17.50
-25x + 68 = 17.50
-68 -68
-25x = -50.50
÷-25 ÷-25
X = 2.02

You can then replace x with 2.02 in the original 7x + 1y = 17.00 to solve for y.

7(x) + 1y = 17.00
7(2.02) + y = 17.00
14.14 + y = 17.00
-14.14 -14.14
y = 2.86

Then substitute 2.02 for x and 2.86 for y in the original 3x+ 4y = 17.50 to check.
3(x) + 4(y) = 17.50
3(2.02) + 4(2.86) = 17.50
6.06 + 11.44 = 17.50
17.50 = 17.50
So
X = 2.02
and
Y = 2.86
or the solution set is (2.02, 2.86)

Hope this helps

5 0

3 years ago