Combine and simplify these radicals.
18.20

Answer:

120

Step-by-step explanation:

All the angles should add up to equal 180 so,

28 + 32 + ? = 180

60 + ? = 180

180 - 60 = 120

Answer:

The speed on motorboat is 20 mph

Step-by-step explanation:

here, we want to find the speed on the motorboat

if he has a speed of x mph on the motor boat, his speed on the ski will be (x + 10) mph

The total hours is 4 hours

Mathematically; speed = distance/time

Time on ski is 27/x+ 10

Time on motor boat is 62/x

The addition of both is 4

Thus;

27/(x + 10) + 62/x = 4

27(x) + 62(x + 10) = 4(x)(x + 10)

27x + 62x + 620 = 4(x^2 + 10x)

89x + 620 = 4x^2 + 40x

4x^2 -49x-620 = 0

using the quadratic formula;

{-b ± √(b^2-4ac)}/2a

where a = 4, b = -49 and c = -620

= 49 ± √(-49)^2-4(4)(-620)/8

So we have

49+ 111/8 or 49-111/8

Speed cannot be negative

(49 + 111)/8

= 20 mph

Answer:

n= 11.9

Step-by-step explanation:

2568283838383u2568283838383ui3ei33i

Answer:

[tex] \underline{ \boxed{n = 11.9}}[/tex]

Step-by-step explanation:

[tex]i f \to \: n + (-5.6) = 6.3 \\ n = 6.3 + ( + 5.6) \\ n = 11.9[/tex]

♨Rage♨

Answer: -1/2

Step-by-step explanation: whenever a line is perpendicular you take the opposite reciprocal of the current slope.

Hello!

Perpendicular lines have slopes that are opposite reciprocals.

It means we take a number, flop it over and then make it negative.

So if we have 2, we flop it over:

[tex]\frac{1}{2}[/tex]

Then, we make it negative:

[tex]-\frac{1}{2}[/tex]

That is the slope. Hope it helps

If you have any query, please ask me! :)

~A forlorn girlie

[tex]MagicalNature[/tex]

Answer:

Y goes like this: -3, -2, -1, 0, 1

Step-by-step explanation:

All you have to do is replace the X in the equation with the X in the chart.

For example, to find the first Y I just did:

y= -2-1

And whatever the thing equals is Y

Answer:

yes.. i HATE them!!

ur answer is: either C or D

(not sure..)

Answer:

the required hcf is 2

okay

Answer:

Approximately 78 yards

Step-by-step explanation:

From the question, I was able to deduce that the swimming pool is a cuboid because the length and width step different in yards. After sketching a cuboid, length= 60 yards, width= 50 yards, then draw a diagonal across the upper rectangle of the cuboid, to get the diagonal, use Pythagoras theorem, Hypotenuse²= opposite²+adjacent²;. x²=60²+50²=3600+2500=6100 ;.

x²=6100 therefore X=√6100 =78.1024 yards, but approximately 78yards, since the question instructed that answer should be approximated.

Answer:

C. -5 ≤ y ≤ 5

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

According to the graph, our y-values span from -5 to 5. Since both are closed dot, they are inclusive in the range:

[-5, 5] or -5 ≤ y ≤ 5

Answer:

(2x – 4) dollars

Step-by-step explanation:

Answer:

16/19

Step-by-step explanation:

Answer:

plot it at -2

Step-by-step explanation:

it literally tells you where to put it?

hope this helps <3

Answer:

Negative 2

Step-by-step explanation:

negative 2, is below sea level. So on a vertical number line, it will be below rather zero, on -2.

Answer:

x = 10 mm is the answer

pls mark me as the brainliest

Answer:

20.) Some charateristics to look for are "what's its leaf shape?" , "does this plant have spores?" , "does it have no leaves?" and "is it a vascular or non-vascular plant?". By naming its charateristics we can infer that it must be a fungus. This means its root system attaches to other plant roots in order to get nutrients for itself.

18.) If we observe the charateristics of the moss we might get an answer. Moss needs water in order to survive since it is the source of nutrients for the moss. The reason why the moss turned green after the rainstorm was because it got the nutrients it needed so it caused the moss to flourish again.

17.) We can use models to compare and contrast plant and fungus cells. By using evidence we can include that both the plant and fungus cells have some common characteristics, however plants are autotrophic, making their own energy, and have cell walls made of cellulose, but fungi are heterotrophic taking in food for energy and have cell walls made of chitin.

Step-by-step explanation:

Answer: It does not matter.

Step-by-step explanation:

-6 + 6 = 0

6 + (-6) = 0

This means that the order doesn't matter.

hope this helps!

Answer:

what girls be like...

Step-by-step explanation:

Answer:

phock question wez deleted

Step-by-step explanation:

9514 1404 393

Answer:

  x = -6 or 6

Step-by-step explanation:

The square root is always positive, so the equation simplifies to ...

  [tex]\sqrt{4x^2}-\sqrt{x^2}=6\\\\2|x|-|x|=6\\\\|x|=6\\\\x=\{-6,\ 6\}[/tex]

_____

The graph shows the solutions to f(x) = 0, where f(x) = √(4x²) -√(x²) -6.

Answer:

It isn't there but 4,700 is the correct answer

Step-by-step explanation:

If x = 100 then we have to multiply 47 by 100 which gives us 4,700.

Answer:

3

Step-By-Step Explaination

Answer:

120x + 45y ≥ 2,500

Answer:

41 degrees

Step-by-step explanation:

Alternate Interior Angles

Answer:

6x2−3x−20

Step-by-step explanation:

Let's simplify step-by-step.

x2+5x2−3x−20

=x2+5x2+−3x+−20

Combine Like Terms:

=x2+5x2+−3x+−20

=(x2+5x2)+(−3x)+(−20)

=6x2+−3x+−20

Answer:

Quadrant 1

Step-by-step explanation:

how I understood this is first understanding how a graph works. Once you understand that you can count 13 horizontal on the "X" Axis, then go 18 up on the "Y" axis. you should get a point in the upper left area and that area is called Quadrant 1. Say if 13 was negative instead of going horizontal east you would go horizontal west. And the point should end up in Quadrant 2. Any more questions feel free to ask me below.

Answer:

There is no solution, y-int of one line is positive

Step-by-step explanation:

There is no solution because there are no shared points between both lines, and the y intercept of the blue line is positive, because it is above the x-axis.

Answer:

the cost price is 27,715

Step-by-step explanation:

Let the cost price be x

As Amab sells to Vivek at 15% profit

So the selling price be

= 115 ÷ 100 × x = 1.15x

And Vivek sells to sagar at a profit of 10%

= 1.15x × 110 ÷ 100

= 1.265x

Now sagar pays it for 35,060

So , the cost price be

1.265x = 35,060

x = 27,715

Hence, the cost price is 27,715

Answer:

Ans is C

Step-by-step explanation:

Answer: the answer is b!

Step-by-step explanation: Hope this helps! Merry Christmas!

Answer:

at 6 minutes and 8.25 minutes

Step-by-step explanation:

When the time reaches 6 minutes, the line touches 35mph. Same goes for 8.25 minutes.