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Tanya [424]
2 years ago
14

Simplify these calculations, leaving your answer in index form.

Mathematics
1 answer:
alexira [117]2 years ago
7 0
Dividing x5^5 / x5^5 is 1
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It's timed plzzz help!!!
Novay_Z [31]

Answer:

Last Choice / D

Step-by-step explanation:

you want to isolate v!

E = 1/2 m v^2

multiply both sides by 2

2E = mv^2

divide both sides by m

2E/m = v^2

square root both sides

v = ±\sqrt{2E/m}

please click heart to give thanks :)

3 0
2 years ago
Read 2 more answers
Ma Bernier has 52 cats and dogs in her house the number of cats is three times the number of dogs how many cats and dogs are in
frosja888 [35]

Answer:

dogs - 13

cats - 39

Step-by-step explanation:

Let the number of dogs Ma Bernier have be represented with d

She has 3 times as many cats as dogs, the number of cats she has :

cats = 3d

The sum of the cats and dogs is 52

d + 3d = 52

4d = 52

divide both sides of the equation by 4

d = 13

She has 13 dogs

Cats = 3d

= 3 x 13 = 39

3 0
3 years ago
A circular mirror is surrounded by a metal frame. The radius of the mirror is 2x. The side length of the metal frame is 12x. Wha
meriva

Answer:

Area\ of\ th\e metal\ frame = 65.5x^{2}\ (unit)^{2}

Step-by-step explanation:

Assuming that the metal frame is a square metal frame because the length of the side of the metal frame is given.

Given:

Radius of the mirror = 2x unit

Side length of the square metal frame = 12x unit

We need to find the area of the metal frame.

Solution:

First we find the area of the circular mirror, using area formula of the circle.

A_{c} = \pi r^{2}

Where, r = Radius of the object.

Substitute r = 2x in above equation.

A_{c} = \pi (5x)^{2}

A_{c} = \pi (25x^{2})

A_{c} = 25\pi x^{2}\ (unit)^{2}

Now, we find the area the square, using area formula of the square.

A_{S} = (Side\ length)^{2}

A_{S} = (12x)^{2}

A_{S} = 144x^{2}\ (unit)^2}

So, the area of the square metal frame is given as

A_{f}=A_{s}-A_{c}

A_{f}=144x^{2}-25\pi x^{2}

A_{f}=(144-25\pi) x^{2}

A_{f}=(144-25\times 3.14) x^{2}

A_{f}=(144-78.5) x^{2}

A_{f}=65.5 x^{2}\ (unit)^{2}

Therefore, the area of the metal frame is 65.5x^{2}\ (unit)^{2}.

5 0
2 years ago
GUYS I NEED HELP ITS URGENT! WILL MARK BRAINLIEST!
Ad libitum [116K]

Answer:

k = 13 The smallest zero or root is x = -10

===============================

Work Shown:

note: you can write "x^2" to mean "x squared"

f(x) = x^2+3x-10

f(x+5) = (x+5)^2+3(x+5)-10 ... replace every x with x+5

f(x+5) = (x^2+10x+25)+3(x+5)-10

f(x+5) = x^2+10x+25+3x+15-10

f(x+5) = x^2+13x+30

Compare this with x^2+kx+30 and we see that k = 13

Factor and solve the equation below

x^2+13x+30 = 0

(x+10)(x+3) = 0

x+10 = 0 or x+3 = 0

x = -10 or x = -3

The smallest zero is x = -10 as its the left-most value on a number line.

Hope this was Right

7 0
3 years ago
Help please 11 minutes
bazaltina [42]

The value of X is 6

reduce the numbers 6x2/3x=24

calculate the product 2x2x=24

divide both sides by 4   4x=24

x=6

7 0
3 years ago
Read 2 more answers
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