Math help. please show work. Thank you.

Answer:

it's 7.5

Step-by-step explanation:

1/2 as a decimal is 0.5

Answer:

Down below

Step-by-step explanation:

Area is 270 metres and perimeter is 66.  I got the area by multiplying the length and width (15 and 18).  I got the perimeter by multiplying 15 by 2 and 18 by 2.  I do this because this is a rectangle and the sides are not all even.  So, two sides would be 15 and two sides would be 18.  I multiply 18 by 2 and 15 by 2 and add the sums together to get 66.

If I'm wrong, I'm sorry.  I'm fairly certain that this is right.

Answer:

I think I'm correct I don't know but I think the answer is B

Answer:

9/4 is as a fraction ..

I hope it will help you .

Answer:

Step-by-step explanation: it is 37 and per =45

Etruscsn small mammals on earth the Bumblebee bat

6(x-2) > 15

6x - 12 > 15

6x > 27

x > 27/6

Hope it helps!

Answer:

x>4.5

Step-by-step explanation:

6(x-2)>15

We do this is as if it were an equation:

6(x-2)>15

Expand the brackets:

6x-12>15

Add 12 to both sides:

6x-12+12>15+12

Simplify:

6x>37

Now we divide both sides by 6:

6x÷6>37÷6

x > 4.5

If we put 5 into the original equation as it is more than 4.5, we get:

6(5-2)>15

We can simplify the brackets or expand first:

Simplifying the brackets first:

6(3)>15

18>15 ✅

Expanding first:

6(5-2)>15

30-12>15

18>15 ✅

Answer:

Option A

Step-by-step explanation:

We use the slope formula:

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

We substitute the values given and see which option corresponds with our equation:

[tex]\frac{-4-(-6)}{-2-3}[/tex]
Option A must be correct

Answer:

Step-by-step explanation:

M = miles

.25M + 160 = 360.00

.25  = 360 - 160

200/ .25

M = 800 miles

Answer:

4

Step-by-step explanation:

Quarter hour on chemistry

Quarter hour on class 2

Quarter hour on class 3

Quarter hour on class 4

Total time....One hour

Answer:

y = 10, x = 4; each side = 20 units

Step-by-step explanation:

In an equilateral triangle, all the sides & angles are equal to each other. So,

=》AC = AB = BC

=》20 = 2y = 5x

Now,

■ AC = AB

20 = 2y

20/2 = y

10 = y

■ AC = BC

20 = 5x

20/5 = x

4 = x

Hope it helps ⚜

Answer:

5:05

Step-by-step explanation:

Since she starts at 4:30 for 35 minutes, it is going to be 35 minutes after 4:30. Which is 5:05.

Your welcome, and feel free to comment if you have any questions! :D

Answer:

12 boys

Step-by-step explanation:

30 in total - 18 girls = x boys

30 - 18 = 12 boys

16. a
17. a
18. d
19. b
20. c
21. c
22. d
23. c
24. (please zoom in the circle so i can see the radius)

Answer:

-5.7 + (-4.2) is your question and -9.9 should be the answer for you

Step-by-step explanation:

hope this helps please mark me brainliest

Answer:

i think 8cm is triangle area

Step-by-step explanation:

because i saw that 8cm on the side so I told 8cm the triangle.

Answer:  -14

Step-by-step explanation:

The multiplicative inverse is the reciprocal of the number.

1/(-1/14) = -14

Answer:

-14

Step-by-step explanation:

one of the multiplicative inverses is the also the reciprocal of the number -14

yes we are you doing today I think I have a

Answer:

[tex]cos2\theta = -frac7{25}[/tex]

Step-by-step explanation:

By using the double angle formula for cosine [tex]cos 2\theta = 2cos^2\theta -1[/tex], replacing the value we have we get

[tex]cos 2\theta = 2 (\frac35)^2 -1 = 2\frac9{25} -1 = \frac{18}{25}-\frac{25}{25} = -\frac{7}{25}[/tex]

Answer:

-7/25

Step-by-step explanation:

Disclaimer: I'm using variable x instead of theta.

Step 1: Simplify cos 2x.

[tex] \cos(2x) = \cos {}^{2} (x) - { \sin {}^{2} (x) }^{2} [/tex]

[tex] \cos(2x) = \cos {}^{2} (x) - (1 - \cos {}^{2} (x) ) [/tex]

[tex]2 \cos {}^{2} (x) - 1[/tex]

We know that cos x= 3/5 so that means

[tex] 2(\frac{3}{5} ){}^{2} - 1 = 2( \frac{9}{25} ) - 1 = \frac{18}{25} - 1 = \frac{ - 7}{25} [/tex]

So the exact value of cos 2x=

[tex] \frac{ - 7}{25} [/tex]

There is another way to find this but this is easier.

Answer:

Explanation to the answer below... (Answers in the Explanation)

Step-by-step explanation:

We Know that our rule is y = [tex]y = -6(3)^{x}[/tex] , which means we can use this rule to find y from x. Since we don't know what X, is, we have to assume numbers like 1, to 7. And there is no space to write on the graph, I'll put a virtual copy of a graph.

1st Point,

[tex]y = -6(3)^{x}\\y = -6(3)^{1}\\y = -6(3)\\y = -18\\x = 1, y = -18[/tex]

2nd, point

[tex]y = -6(3)^x\\ y = -6(3)^2\\y = -6(9)\\y = -54\\x = 2, y = -54[/tex]

3rd Point

[tex]y = -6(3)^x\\y = -6(3)^3\\y = -6(27)\\y = -162\\x = 3, y = -162[/tex]

4th Point

[tex]y = -6(3)^4\\y = -6(81)\\y = -486\\x = 4, y = -486\\[/tex]

5th Point

[tex]y = -6(3)^5\\y = -6(243)\\y = -1458\\\x = 5, y = -1458[/tex]

6th Point

[tex]y = -6(3)^x\\y = -6(3)^6\\y = -6(729)\\y = -4,374\\x = 6, y = -4,374\\[/tex]

7th Point (Last Point)

[tex]y = -6(3)^x\\y = -6(3)^7\\y = -6(2,187)\\y. = -13,122\\x = 7, y = -13,122[/tex]

Let's now plot them on the Graph, the values are so big, the graph might look a little odd.

Always remember that we can continue the points infinitely, and there is no stop, The Graph is attached below...

Answer:

Step 1: Divide 300 by 200 to get the number as a decimal. 300 / 200 = 1.5

Step 2: Multiply 1.5 by 100. 1.5 times 100 = 150. That's all there is to it!

Note that you can reverse steps 1 and 2 and still come to the same solution. If you multiply 300 by 100 and then divide the result by 200, you will still come to 150!

Step-by-step explanation:

hope it helps

Answer:

7 dollars for one box is the answer

Answer:

They are not equal

Step-by-step explanation:

So, lets start by simplifying the expressions

Expression 1:

4s + 2

Expression 2:

s x s x s x s + h x h

s^4 + h^2

We have two different expressions now, they don't seem to be equivalent, since in the first one, we have 4 x s + 2, but in the second one, it is s x s 2 times added with h x h.

If you have any questions, let me know in the comments. If you could mark this answer as the brainliest, I would very much appreciate it! :D

The approximate value of x will be approximately equal to 3.4

The formula for calculating area of rectangle is expressed as:

A  = lw

Ar = (3x-1)(x+2)

Ar = 3x^2+6x-x-2

Ar = 3x^2 + 5x - 2

For the circle

Ac = πr²

Ac = 3.14(x-3)²

Ac = 3.14(x²-6x+9)

Ac = 3.14x² - 18.84x + 28.26

If the area are equal;

3x² + 5x - 2 = 3.14x² - 18.84x + 28.26

3.14x² - 3x² - 5x - 18.84x + 30.26 = 0
0.14x²-23.84x+30.26 = 0

On factorizing the equation, the approximate value of x will be approximately equal to 3.4

Learn more on area of rectangle here; https://brainly.com/question/25292087

Answer:

O 16,30,34

Step-by-step explanation:

To confirm, use Pythagorean theorem to check.

(16)² + (30)² = (34)²

256 + 900 = 1156

=> It is correct

=> Therefore, this set of three lengths will form a right triangle

Answer: 2/8

Step-by-step explanation:

Think of it as 6 - 4. We know that 6 - 4 is 2, so the same thing apple is to 6/8 - 4/8. So, you have 2/8!