Rationalize the dominator 1/1+√3 -√5

Answer:

Divide both to get the specific number of rolls which is 5

Answer:

[tex]\huge\boxed{\text{At least an } 87\%}[/tex]

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

[tex]\displaystyle \frac{x_1+x_2+...x_n}{n}[/tex]

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as [tex]x[/tex].

[tex]\displaystyle \frac{98+72+87+x}{4} \geq 86[/tex] (since we want AT LEAST an 86).

Let's solve this inequality for x.

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

Answer:

I think it's right. It's been a while so I'm not 100% sure but I'm pretty sure.

Step-by-step explanation:

Answer:

Its c, none of the above.

Step-by-step explanation:

Answer:  g > 7

Graph has an open circle at 7 on the number line, shading to the right

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

Explanation:

Think of it like saying "I have a number, and I add on 5. The result is something larger than 12". You can guess and check your way to the answer, but the quickest way is to subtract 5 from both sides.

We subtract to undo the addition happening to the 'g'.

g+5 > 12

g+5-5 > 12-5

g > 7

So the number is larger than 7. For instance, if g = 8, then,

g+5 > 12

8+5 > 12

13 > 12

This is a true statement.

-------------------------

If you need to graph the solution, then you'll have an open circle at 7 on the number line. The open circle says to the reader "don't include this value as part of the solution set". Shade to the right of the open circle to describe all values larger than 7.

In summary, the graph has an open circle at 7 and shading to the right.

Answer:

$872.29

Step-by-step explanation:

to do a 8.25 percent sales tax you do $803.95*1.085 and you get the above number

Step-by-step explanation: Notice that the angle diagonal

of the 114° is a vertical angle and vertical <'s are ≅.

Now, notice that we have two parallel lines cut by a transversal.

If two parallel lines are cut by a transversal, then

consecutive interior angles are supplementary.

So we can setup the equation 114 + y + 12 = 180.

Simplifying on the left gives us 126 + y = 180.

Now subtract 126 from both sides to get y = 54.

Full question attached

Answer:

Greenland offers the lowest unit rate, dollars per pound

Step-by-step explanation:

For McCoy, $4.5 = 5 pounds

Therefore $1 = 5pounds/4.5= 1.11 pounds

1 pound= 1/1.11= $0.9009

For Eat smart

$3=2 pounds

Therefore $1=2pounds/3 = 0.667 pounds

1 pound = 1/0.667= $1.499

For Greenland

$1/5= 1/4 pounds

$0.2=0.25 pounds

$1= 1.25 pounds

Therefore 1 pound= 1/1.25= $0.8

For Mother Nature

$0.95= 1 pound

Therefore Greenland offers the lowest unit rate at $0.8 per pound

Answer:give them a 100$ bill and ask for change

Step-by-step explanation:

Answer:

8 pounds

Step-by-step explanation:

8.75 / 3.5 = 2.5

20/2.5 = 8

Answer: 8 pounds of strawberries

Step-by-step explanation:

$8.75 - 3.5 pound

? - 1 pound

1 pound - 8.75 ÷ 3.5 = 2.5

$2.50 = 1 pound

$20.00 = ?

$20 = 20 ÷ 2.5 = 8

$20.00 = 8

Allison can buy 8 pounds of strawberries with $20.00

Hope that helped!

Answer:

P (34<X<39) = 0.5899

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

[tex]\mu = 37, \sigma = 3[/tex]

What is the probability that a cat would return to it's dish between 34 and 39 times a day.

This is the pvalue of Z when X = 39 subtracted by the pvalue of Z when X = 34. So

X = 39

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{39 - 37}{3}[/tex]

[tex]Z = 0.67[/tex]

[tex]Z = 0.67[/tex] has a pvalue of 0.7486

X = 34

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{34 - 37}{3}[/tex]

[tex]Z = -1[/tex]

[tex]Z = -1[/tex] has a pvalue of 0.1587

0.7486 - 0.1587 = 0.5899

So

P (34<X<39) = 0.5899

Answer: C

Step-by-step explanation:

1.2x-10=0.2x+14

subtract 0.2x

1.0x-10=14

add 10

x=24

Answer:

im pretty sure false. ......... ....................

Answer: The water level rises

Step-by-step explanation:

Answer:

10X5 = 50    9X12 = 108

Step-by-step explanation:

Answer:

x=144

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

39 pages of notes, and Tracy has 3 pages of notes during each hour. So what we can do is simple division, 39/3 which will give you 13. In conclusion, Tracy takes 39 notes in 13 hours.

Answer:

x = 7

Step-by-step explanation:

Given that ∆BCD ~ ∆BFG, therefore the ratio of their corresponding side lengths will be equal.

Thus:

[tex] \frac{BC}{BF} = \frac{BD}{BG} [/tex]

Substitute

[tex] \frac{17x + 13}{36} = \frac{154}{42} [/tex]

Cross multiply

[tex] 42(17x + 13) = 154(36) [/tex]

[tex] 714x + 546 = 5,544 [/tex]

[tex] 714x = 5,544 - 546 [/tex] (subtraction property of equality)

[tex] 714x = 4,998 [/tex]

Divide both sides by 714

x = 7

Answer:

4 is the real number in that complex number

Answer:

-7

Step-by-step explanation:

-1 x -1 = 1

4 x -2 = -8

1 + (-8) = -7

Answer:

D

Step-by-step explanation:

The ratio's of the sides of "D" match.

15/18=17.5/21

Answer:

$7049 is the answer.

Step-by-step explanation:

Answer: $7980

Step-by-step explanation:

Follow the formula A=Pe^rt

A= 7500(e)^(.031)(2)

A= 7980

Answer:

234234234234234234234

Step-by-step explanation:

Answer:

Step-by-step explanation: So theres 10 marbles total in the bag. 5 is one half of 10 so the probability to get a blue marble is 5/10 or 1/2 and the probablility of getting an orange one is 1/10 so you have to first get lucky and get that 5/10 chance, and then get even more lucky and get the 1/10 chance and so I believe that it would be 1/20

Step-by-step explanation:

1a. 75,986

1b. Seventy five thousand nine hundred eighty six.

1c. 75,986=this one

[tex]7 \times10000 + 5 \times 1000 + 9 \times 100 + 8 \times 10 + 6 \times 1[/tex]

1d. 70,000

1e 80

I did not understand the rest. Hope it's useful.....

Answer:

heres that plot you needed for that one glasses of water thing

Answer:

r=5

Step-by-step explanation:

Can i get brainlest

Answer:

r=5

Step-by-step explanation:

1)

-4r+18=-2 Subtract 18 from both sides

-18 -18

2)

-4r=-20

---- ---- Divide both sides by -4

-4r -4r

3)

r=5 -20/-4 ----------> 5

Answer:

Correct headsets= 274.4 = 274

Step-by-step explanation:

Giving the following information:

Number of units= 280

There is a 2% chance of finding a defective headset.

To calculate the number of headsets without any defect, we need to use the following formula:

Correct headsets= 280*0.98

Correct headsets= 274.4 = 274