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Black_prince [1.1K]
2 years ago
9

HELP THIS IS SO EXTRAORDINARILY HARD 1 + 1 =___

Mathematics
2 answers:
svlad2 [7]2 years ago
7 0

Answer:

2

Step-by-step explanation:

dude why

lilavasa [31]2 years ago
4 0

Answer:

2

Step-by-step explanation:

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A bag contains three red marbles, three blue marbles, and three yellow marbles. You randomly pick three marbles without replacem
luda_lava [24]

Answer:

first one is yellow

Step-by-step explanation:

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2 years ago
Aristotle was born in 384 BC. Ron Howard was born in 1952 AD. HOW many years apart were they born?
rodikova [14]
The answer is 2336 cause bc was before Christ ad us after death so if we add them that's the answer
6 0
3 years ago
The length of a rectangle is 6 more than twice the width. if the area is 40 cm^2, find the length and breadth of the rectangle
ra1l [238]

Answer: 3.217 & 12.434

Step-by-step explanation:

If we use <em>w</em> to represent the width, the length will be 6 more than 2 times w.

Hence, the length is 2w+6.

The area of a rectangle would be its length times its width, so let's make an equation to represent it's area.

A=w(2w+6)

We can also substitute 40 in for A as it's given in the question.

40 = w(2w+6)

Distributing <em>w</em> by multiplying it by both terms in the parentheses, we get

40 = 2w^2+6w

We can make the equation simpler by dividing both sides by 2.

20 = w^2+3w

Subtracting both sides by 20 will make the left-hand side 0.

0=w^2+3w-20

Now that we have put this <em>quadratic equation</em> into standard form (ax²+bx+c), we can find its solutions using the quadratic formula.

For reference, the quadratic formula is

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

In this case, a is 1, b is 3, and c is -20.

Substituting, we get

w=\frac{-3\pm\sqrt{3^2-4(1)(-20)}}{2(1)}

w= \frac{-3\pm\sqrt{9+80}}{2}

w=\frac{-3+\sqrt{89}}{2}\hspace{0.1cm}or\hspace{0.1cm}\frac{-3-\sqrt{89}}{2}

Since the second solution results in a negative number, it cannot be the length of w.

w=\frac{-3+\sqrt{89}}{2}\approx3.217

The width/breadth of the rectangle is 3.217 cm.

To calculate the length, let's substitute the width into the expression for the length:

l=2(3.217)+6

l=12.434

The length of this rectangle is 12.434 cm.

6 0
1 year ago
Use the substitution method to solve the system of equations. Choose the
BigorU [14]

Answer:

C. (4,28)

Step-by-step explanation:

When y = 8x - 4 ; x = 4

when u substitute x in the equation

the value of y = 28

y = (8 x 4) - 4

= 32 - 4

= <u>2</u><u>8</u><u>.</u>

As coordinates it would be (x,y) = <u>( 4,28 )</u>

3 0
3 years ago
Read 2 more answers
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anygoal [31]

Answer:

C

X=-16

Step-by-step explanation:

5 0
3 years ago
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