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2 years ago

Please I need help I’m being timed.please

Mathematics

1 answer:

Sindrei [870]2 years ago

8 0

Answer:

C, D, and E

Step-by-step explanation:

85-20=65

t>65

This means all the numbers greater than 65.

Do not include 65 because it is not a greater than or equal to symbol.

Hope this helps!

If not, I am sorry.

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Can someone help pls

ch4aika [34]

Sure.

See above

I believe this is correct, hope it helps.

Sorry for messy work

-3.5 is equal to 3 1/2 so thats why we place the point there

5 0

2 years ago

If x= 7 - 4√3 then find the value of (a) (x+1/x) rais to 2 b) x rais 2+1/x rais to 2

ololo11 [35]

The equation x = 7 - 4√3 is a radical expression, and the value of the radical expression is $(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

<h3>How to solve the expressions?</h3>

The equation is given as:

x = 7 - 4√3

So, we have:

$(x + \frac 1x)^2 = (7 - 4\sqrt 3 + \frac{1}{7 - 4\sqrt 3})^2$

Take the LCM

$(x + \frac 1x)^2 = (\frac{49 -56\sqrt3 + 48}{7 - 4\sqrt 3})^2$

Evaluate the like terms

$(x + \frac 1x)^2 = (\frac{97 -56\sqrt3 }{7 - 4\sqrt 3})^2$

Rationalize

$(x + \frac 1x)^2 = (\frac{(97 -56\sqrt3)(7 - 4\sqrt 3) }{49 -48})^2$

Evaluate the difference

$(x + \frac 1x)^2 = ((97 -56\sqrt3)(7 - 4\sqrt 3))^2$

Expand

$(x + \frac 1x)^2 = (679 -388\sqrt 3 -392\sqrt 3 + 672)^2$

Evaluate the like terms

$(x + \frac 1x)^2 = (1351 -780\sqrt 3 )^2$

Expand

$(x + \frac 1x)^2 = 1825201 +1825200 -2107560\sqrt 3$

$(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

Hence, the value of the radical expression is $(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

Read more about radical expressions at:

brainly.com/question/8952483

#SPJ1

4 0

2 years ago

X + (y + 2) = (x + y) + z.<br> A. False<br> B. True

Serga [27]

A .
this is false
There’s no answer for x and y

5 0

3 years ago

Help help me please guys

IceJOKER [234]

In order to solve this problem, you must use the rules of P.E.M.D.A.S P=Parenthesis, E= Exponents, M= Multiplication, D= Division, A= Addition, S= Subtraction. PS Remember the rules with negatives as well and make sure that you simplify it the best you can. If you need further help and explanation make sure to ask.

4 0

3 years ago

Read 2 more answers

Sharon is making a large batch of soup. The soup reaches a height of 25 in a cylindrical pot whose diameter is 30cm. To store th

eduard

Answer:

Step-by-step explanation:

Well we first need to find the volume of the soup in the pot using the following formula,

πr^2h

15*15 = 225

225 * 25 = 5625

5625 * pi = <u>17671.46</u>

Now we need to find the volume of the ice cube using the formula,

l*w*h

7*7*7 = <u>343</u>

Now we do 17671.46 ÷ 343 = 51.5202915452

You can have half an ice cube,

thus, Sharon can make 51 whole cubes.

<em>Hope this helps :)</em>

5 0

3 years ago

Read 2 more answers