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2 years ago

Ethan owns a farm house. His farm house contains cows and buffaloes. The total number of

Mathematics

1 answer:

pav-90 [236]2 years ago

8 0

TOTAL NO.OF ANIMALS IN FARMHOUSE=42

RATIO OF COW : BUFFALO=5:9

LET THE NO.OF COWS BE 5X AND BUFFALOES BE 9X

5X + 9X =42

14X=42

X = 42/14

X= 3

TOTAL NO.OF COWS = 5 x 3 =15

TOTAL NO.OF BUFFALOES = 9 x 3 = 27

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I need help with my algebra 2. I also want to know how to solve this.

Lisa [10]

Add 1 to both sides:

$\sqrt{x+3} = x+1$

In cases like this, we have to remember that a root is always positive, so we can square both sides only assuming that

$x+1 \geq 0 \iff x \geq -1$

Under this assumption, we square both sides and we have

$x+3 = (x+1)^2 \iff x+3 = x^2+2x+1 \iff x^2+x-2 = 0$

The solutions to this equation are

$x = -2,\ x=1$

But since we can only accept solutions greater than -1, we discard $x=-2$ and accept $x=1$ .

In fact, we have

$x=-2 \implies \sqrt{-2+3}-1=0\neq -2$

and

$x=1 \implies \sqrt{4}-1=1$

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3 years ago

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Leviafan [203]

$\qquad\qquad\huge\underline{{\sf Answer}}$

$\textbf{Since it's a right angled Triangle we can } \\ \textbf{ use Pythagoras theorem }$

$\sf{Cos (29°) = \dfrac{b}{c}}$

$\sf{Cos (29°) = \dfrac{b}{260}}$

$\sf{b= 260\cdot Cos (29°) }$

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[ $\textsf{Cos(29°)= 0.875}$ ]

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$\textsf{I hope you understood the procedure}$

7 0

2 years ago

-6 + x = -2 Thank you

marishachu [46]

Answer:

4 because I know it's right

8 0

3 years ago

Solve the equation by completing the square. round to the nearest hundredth if necessary. x^2-6x=20

amm1812

X^2 - 6x = 20
x^2 - 6x + 9 = 20 + 9
(x - 3)^2 = 29
x - 3 = (+-) sqrt 29
x = 3 (+-) sqrt 29
x = 3 (+-) 5.39

x = 3 + 5.39 = 8.39 <=
x = 3 - 5.39 = - 2.39 <=

6 0

3 years ago

Read 2 more answers

Please help! 45 points !!

NeTakaya

Answer:

A. 8.2 x 10^6

Step-by-step explanation:

To get what 4.1x10^3 is equal to you move the decimal point to the right three times. This leaves you with 4,100. To get what 2.0x10^3 is equal to, you move the decimal point to the right three times. This leaves you with 2,000. 4,100 x 2,000 is 8,200,000. Then move the decimal to the left until it is behind the 8. In order to do this, you would have to move the decimal point 6 times. So the final answer is 8.2 x 10^6.

PLEASE MARK BRAINLIEST

8 0

3 years ago

Read 2 more answers