Pls help
8th grade math

Answer:

20.8%

Step-by-step explanation:

The number of the pieces of mail handled by the U.S postal service decreased from 212,000,000,000 to 168,000,000

Therefore the percentage decrease can be calculated as follows

= 212,000,000,000-168,000,000,000

= 44,000,000,000/212,000,000,000 × 100

= 0.2075 × 100

= 20.8 %

Hence the percentage decrease is 20.8%

Answer:

True

12+7>9(2-3)-8

19> (-9)-8

19>-17

Step-by-step explanation:

Answer:

12+7=19 and 9(2-3)-8=-17

Step-by-step explanation:

Answer:

A. From hour 0 to hour 5

Step-by-step explanation:

For all Plato users

Interval of the temperature decreasing is from hour 0 to hour 5.

an interval is defined as a group of numbers which includes all numbers between the beginning and the end.

According to given data is showing that the temperature decreasing zero hour to 1 hour , then 1 to 2 hour, then 2 to 3 hour, then 3 to 4 hour, then 4 to 5 hour.

So the interval of the temperature decreasing is from hour 0 to hour 5.

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Answer:

bar graph

pie chart

histogram

Step-by-step explanation:

Answer:

1. n ≥ 4

2. N ≥ nlog(2)÷log3

Step-by-step explanation:

1

1 byte = 8 bits

each byte = 8 trits

a 6 bit number = [tex]2^{6} = 64[/tex]

3n ≥ 64

divide through by3

n ≥ 64/3

we take the logarithm

n ≥ [tex]\frac{log64}{log3}[/tex]

n ≥ 1.8062 ÷ 0.4771

n≥3.785

when approximated, n ≥ 4. So the number of trits needed in the storage of 6 bit is atleast 4

2.

to hold n bits, we can do something similar.

3N ≥ 2n

we take log of both sides

such that;

N ≥ [tex]\frac{nlog(2)}{log(3)}[/tex]

Answer:

Step-by-step explanation:

First solve the inequality by writing it.

-4s < 6s + 1

Now subtract -1 on both sides.

-4s - 1 < 6s

Now add 4s on both sides to combine like terms.

-1 < 10s

Now divide 10 on both sides.

-0.1 < s

Now flip it over properly.

s > -0.1

Hope this helped! <3

Answer:

There are 100 centimetres in one metre. Therefore, 4 metres is equal to 4 x 100 = 400 centimetres. This is longer than 40 centimetres.

Answer: F

Step-by-step explanation: Amy lynn's kitchen offers a variety of breakfast specials, there are four choices for customers to choose from, but each choice has a combination. Which makes it 8 combinations Amy Lynn' serves

Answer:

Not equal to.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The question says "Create a matrix to display the data".

The are 3 products:

- McBurger   - Mini McBurger   - ChocoLatte Shake

The figures represent monthly sales for each product, in a given year. This means 12 figures for each product - represent the 12 months of the year.

These figures will appear on the matrix, with the horizontal arrangement representing each month of the year and the vertical arrangement representing each product's sales.

In that light, you'll have a 12 by 3 matrix.

[tex]\left[\begin{array}{ccc}46&23&88\\63&41&46\\58&35&39\\77&44&52\\81&62&67\\102&88&99\\183&95&189\\197&99&238\\125&108&188\\111&111&97\\83&98&51\\218&63&12\end{array}\right] 12 by 3 matrix[/tex]The first row represents sales in January, the second row represents sales in February, the third row represents sales in March, the fourth row represents sales in April, etcetera.

The first column represents sale of McBurger, the second column represents sale of Mini McBurger, the third column represents sale of Choco-Latte Shake.

Answer:

1/4 - 1/3i

Step-by-step explanation:

(4+3i)(-i) / 12i(-i)

= 3 - 4i / 12

The percentage increase for flight tickets to fly from orlando to hartford would be = 67.5% and 92.5% when there is an additional $50 to the new price.

Percentage increase is defined as the rise in the quantity or amount for an object which is converted into percentage.

The formula for percentage increase would be = increase ÷ original amount × 100

The increase of the cost = 335 - 200 = $135

The original amount = $200

The percentage increase = 135/200 × 100

= 13500/200 = 67.5%

But if the increase in cost is 135 + 50 = $185

The percentage increase of the new cost would be;

= 185/200 ×100

= 18500/200

= 92.5%

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Answer:

The hypothesis test is right tailed because of claim made by SEO account manager that a web page on average has more than 10 keywords.

Step-by-step explanation:

The given hypothesis test is right tailed due to the claim made by SEO account manager. The tail of hypothesis test decided by looking at alternative hypothesis. The claim stated as " a web on average has more than 10 keywords" and this leads to alternative hypothesis as

Ha:μ>10.

The alternative hypothesis shows the greater than area or also known as right tailed area. Thus, given hypothesis test is right tailed.

Answer:

the answer is a

Step-by-step explanation:

Answer:

We reject H₀, we find that the  current level of mercury uptake in the Everglades has decrease

Step-by-step explanation:

We need to test the current wading bird average 14,6 vs the 1995 average. As sample mean is 14,6 and population mean is 15 we are going to check test is of one tail (left tail test)

Test Hypothesis:

Null hypothesis             H₀          μ   =  μ₀

Alternative hypothesis Hₐ          μ   <  μ₀

Sample size 25             then n < 30 we will use t-student table

Population mean : μ₀ = 15 ppm

sample mean :  μ  = 14,6 ppm

sample standard deviation:   s = 1 ppm

Sample size n :  25

degrees of freedom   df = n - 1         df = 24

We will develop the test for CI 90%  then  α = 10%      α = 0,1   α/2 = 0,05

For that values in t student table we find:

t(c) = 1,711    by symmetry t(c) = - 1,711

To compute ts

t(s) =  ( μ - μ₀ ) / s/√n

t(s) = 14,6 - 15 / 1 /√25

t(s) = - 0,4*5 / 1

t(s) = - 2

Comparing t(c)and t(s)

|t(s)| > |t(c) |      and t(s) < t(c)         -2 < -1,711

Therefore t(s) in in the rejection region, we reject H₀  

Answer:

I think its 117.76 meters

Step-by-step explanation:

you multiply the 46 x 3 then you get 138 yellow ribbon then 138 + 46 then its 184 then 184 x 6 = 11776

Answer:

117.76 meters

Step-by-step explanation:

46x64=2,944 (red ribbon)

46x3=138x64=8,832 (yellow ribbon)

8,832+2,944=11,776 (all ribbon)

11,776 centimeters converted into meters is 117.76 meters

Answer:

D.) x²-10x+25 sq. units

Step-by-step explanation:

The question is not properly written. The question should have been:

If each side of a square is (x-5) units, which expression can be used to represent the area of the square.

Area of a square = L² where:

L is the length of the square

Given

L = x-5

Required

Area of the square

Substitute the given function into the formula to get the required as shown:

Area of the square = (x-5)²

Expand

A(x) = (x-5)(x-5)

A(x) = x(x)-5x-5x-5(-5)

A(x) = x²-10x-25

Hence the area of the square is (x²-10x+25)sq. units. Option D is correct.

Answer:

The actual area of the field in square kilometers is [tex]30000000 km^2[/tex]

Step-by-step explanation:

Scale : 1 cm = 50000 km

Area of field on map = [tex]1.2 cm^2[/tex]

Now , 1 cm = 5000 km

[tex]1 cm^2 = (5000 km)^2[/tex]

We are supposed to find the actual area of the field in square kilometers.

So, the actual area of the field in sq. km =[tex]1.2 \times (5000)^2[/tex]

Actual area of the field in sq. km [tex]=30000000 km^2[/tex]

Hence the actual area of the field in square kilometers is [tex]30000000 km^2[/tex]

Answer:

11.a) is 15+5.50+3 maybe

11.b) is $3.50 because 15-12=3 3+5.50=8.50 8.50+3=11.50 11.50-8=3.50

Answer:

10% of $50.00 is $5.00 SO ORGINAL PRICE IS $55.00

Step-by-step explanation:

50÷10=5

5 00+50.00= $55.00

Answer:

[tex]\frac{1}{524160} or 1.910^{-6}[/tex]

Step-by-step explanation:

In order to solve this, you would need to multiply the probability of you choosing the one that goes first, so 1 in 16 discs, then the next one so 1 in 15, and so on untill the fifth disc.

So you would have to do this:

[tex](\frac{1}{16})(\frac{1}{15})(\frac{1}{14})(\frac{1}{13})(\frac{1}{12})\\\frac{1}{524160}[/tex]

That is the probability that the rack ends up in alphabetical order, if you pull discs randomly, 1 in 524160 chances.

Probabilities are used to determine the chances of an event.

The probability that the rack ends up in alphabetical order is [tex]\mathbf{ \frac{1}{524160}}[/tex]

The given parameters are:

[tex]\mathbf{CD = 16}[/tex]

[tex]\mathbf{r = 5}[/tex] -- CDs to arrange

So, the total number of arrangements of 5 CDs from the 16, is:

[tex]\mathbf{Total = ^{16}P_5}[/tex]

Apply permutation formula

[tex]\mathbf{Total = \frac{16!}{(16 - 5)!}}[/tex]

This gives

[tex]\mathbf{Total = \frac{16!}{11!}}[/tex]

Expand

[tex]\mathbf{Total = \frac{16 \times 15 \times 14 \times 13 \times 12 \times 11!}{11!}}[/tex]

[tex]\mathbf{Total = 16 \times 15 \times 14 \times 13 \times 12 }[/tex]

[tex]\mathbf{Total = 524160}[/tex]

There is only one possibility of the CDs being in alphabetical order.

So, the probability is:

[tex]\mathbf{Pr = \frac{1}{524160}}[/tex]

Hence, the probability that the rack ends up in alphabetical order is [tex]\mathbf{ \frac{1}{524160}}[/tex]

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I think D represents the height, i don't know that for sure but yoy can try?

Answer:

Well d because there is a line going from bottom to top of the cone next to the D

Step-by-step explanation:

Answer: C

Step-by-step explanation:The top producing states are Texas, Oklahoma, New Mexico, Wyoming, and Louisiana, which produce more than 50 percent of U.S. natural gas.

Answer:

Your answer is C

Answer:

Callie has 4 months to pay off the bill. The rational number is +4. The sign is positive because it represents a quantity of something, in this case, months.

Step-by-step explanation:

this is correct...

trust me :)

The sign is positive because it represents a quantity of something, in this case, months.

Callie has 4 months to pay off the bill.

The rational number is +4.

A number that can be represented as the quotient p/q of two integers such that q ≠ 0. In addition to all the fractions, the set of rational numbers includes all the integers, each of which can be written as a quotient with the integer as the numerator and 1 as the denominator.

The sign is positive because it represents a quantity of something, in this case, months.

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Answer:

C

Step-by-step explanation:

Please mark brainliest

Answer:

can you give a chart or something?