Please help solve x^2-2x-4=0

Answers

Answer 1

Answer: Simple....

you have $x^(2) -2x-4=0$

To solve...you must complete the square...

use $( (b)/(2) ) ^(2)$ to create a new term...

x=1(+/-) $√(5)$

Thus, your answer.

(Or, x≈3.23606797, -1.236067967)

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How do you find the derivative of h(t)=sqrt(t)(1-t^2)

Answers

Answer:

Step-by-step explanation:

$h(t)=√((t)(1-t^2))\nh^(2)(t)=t(1-t^2)=t-t^3\n diff. w.r.t.,\n2 h(t)h'(t)=1-3t^2\nh'(t)=(1-3t^2)/(2 h(t)) \nh'(t)=(1-3t^2)/(2√((t)(1-t^2)) )$

when the whole is the same,how many eights does it take to make 1 fourth? draw a model to support your answer

Answers

2/8. 2/8 can be simplified to 1/4 if you divide by 2 in both the numerator and the denominator. Draw two pies. Make one pie cut into 8 even pieces and one cut into 4. Shade in two of the slices on the pie with 8 pieces (side by side) and shade in one on the pie that's cut into four slices (in the same spot as on the other pie). You should see how you shaded the same total area of each pie.

One half of the sum of a number and 10

Answers

The expression (1/2)[x+10] represents the one half of the sum of a number and 10.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

We have:

One half of the sum of a number and 10

Let's suppose the number is x:

So from the problem, the one half of the sum of a number and 10 is:

$\rm =(1)/(2)(x+10)$

The above expression represents the one half of the sum of a number and 10.

Thus, the expression (1/2)[x+10] represents the one half of the sum of a number and 10.

Learn more about the expression here:

brainly.com/question/14083225

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One half of the sum of a number and 10

n - a number

$(1)/(2)(n+10)$

A 12-gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and a drain that lets water out at a rate of 1.5 gallons per minute. If you start with 3 gallons of water in the tub, how long will it take to ﬁll the tub completely?

Answers

Vol of water required to fill up the tub = 12-3 = 9
Rate of water per min =    3 -1.5 = 1.5/min
Using the formula           vol   =   rt
                                            t = v/r
                                            t =    9/1.5    =   6
time taken =    6 mins

If each pound of beef cost $2.59 how much does 3 1/4 pounds cost ?

Answers

Answer:

$8.35

Step-by-step explanation:

2.59*3 = 7.70

2.59/4 = .65

7.70+.65= $8.35

The bases of a circular cylinder are two ___ circles.

Answers

Well,

A cylinder is actually a special type of prism. A prism is a 3-D figure made by taking a simple closed plane curve and translating it across space in a certain direction and for a given distance and then connecting the preimage and the image. A cylinder is just a prism made with a circle.

We know from translations that the image is congruent to the preimage. Thus, the bases of a (circular) cylinder are two congruent circles.

I'd say symmetric? Are there any options?

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Find the area, please I’ll give brainlist