How is the quotient 7^18/7^-9 expressed as a power of 7

Answer:

hola yo me llamo jimena

Step-by-step explanation:

ok yo pues no de que hablas me podrías

Answer:

2x+8-2y

Step-by-step explanation:

4x-2x+5+3-2y

2x+8-2y

Answer:

There you go!!

Step-by-step explanation:

4x - 2x - 2y + 3 + 5

The number of students should be polled so that we can estimate p to within 0.09 using a 99% confidence interval is 206

We need to calculate the number of students that should be polled

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by α = 1 - 0.99 = 0.01  and . And the critical value was found to be 2.58

Margin of error

\(ME = z\sqrt{\frac{p(1-p)}{n} } \\\)

On sunstituting and further calculation

n = 205.64

And rounded up we have that n=206

Therefore, the number of students should be polled so that we can estimate p to within 0.09 using a 99% confidence interval is 206

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Answer:

\(\Large \boxed{\mathrm{Option \ D}}\)

Step-by-step explanation:

(6, 4)

x = 6 and y = 4

y > -1/2x + 7

Plug in the values to check if it is true.

4 > -1/2(6) + 7

4 > -3 + 7

4 > 4

This statement is false.

(6, 4) lies on the line.

The Square has equall sides thus if we suppose that square has a side which is x inches then the Perimeter is :

\(perimeter = 4 \times x\)

Thus

\(80 = 4 \times x\)

Divide both sides by 4

\( \frac{80}{4} = \frac{4x}{4} \\ \)

\(20 = x\)

\(x = 20\)

Thus each side has a value of 20 inches .

Answer:

65

Step-by-step explanation:

2w+ 2l = 300

2w + 170=300

2w= 130

w=65

Answer:

$4

Step-by-step explanation:

We are told that Roxanne:

We need to work out how much it costs for Roxanne to bank with each bank each month, then compare the total costs to see how much Roxanee could save if she switch from East Median to Jasmine bank.

Cost of monthly banking at East Medina Bank:

Checking account services = $6

                   Online banking = $5  (remember, she doesn't have a linked savings a/c)

                         ATM (1 use) = $1

       nonbank ATM (2 uses) = $6

                                    Total = $18

Cost of monthly banking at Jasmine Bank:

Checking account services = $10

                   Online banking = $4

                          ATM (1 use) = $0

       nonbank ATM (2 uses) = $0

                                    Total = $14

To calculate the money Roxanne could save by switching to Jasmine Bank, simply find the difference between the monthly costs:

Savings = $18 - $14 = $4

Answer:

the ratio of teaspoons of sugar to one large coffee is 3: 1

Step-by-step explanation:

The computation of the ratio of sugar teaspoons to one large coffee is as follows:

Sugar teaspoons = 2 + 1 = 3

And, the one large coffee = 1

So, based on the above information

The ratio between them is

= 3:1

= 3 to 1

hence, the ratio of teaspoons of sugar to one large coffee is 3: 1

The probability that no white car was sold is 10/18 × 9/17 = 15/34Answer: a) 14/51 b) 15/34.

A car showroom has 6 blue cars (B),8 white cars (W) and 4 maroon cars (M). Two cars are sold. The probability tree diagram to represent the given information is as follows:The probability that both cars sold were white:We have to find the probability of two white cars which are sold out of 18 cars. Therefore, the probability of choosing the first white car is 8/18.Then, the probability of choosing the second white car is 7/17 (as one car has already been taken out).Therefore, the probability of both cars sold were white is 8/18 × 7/17=14/51

The probability that no white car was sold:We have to find the probability of not choosing any white car while selling out of 18 cars. Therefore, the probability of choosing a car that is not white on the first go is 10/18.Then, the probability of choosing a car that is also not white on the second go is 9/17 (as one car has already been taken out).Therefore, the probability that no white car was sold is 10/18 × 9/17 = 15/34Answer: a) 14/51 b) 15/34.

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Answer:

Yes, that is true, and x=45.

Step-by-step explanation:

Yes, that's how you set up the equation I also listed the sets to solve it below:

3x+15=2x+60

-2x.     -2x

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

x+15=60

  -15 -15

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

x=45

You can also plug it in to check your work.

3(45)+15=2(45)+60

135+15=90+60

150=150

Answer:

The simplest form of \(\frac{14a^2}{24a}\)  is \(\mathbf{\frac{7a}{12}}\)

Step-by-step explanation:

We need to write \(\frac{14a^2}{24a}\) in simplest form.

We know the exponent rule: \(\frac{a^m}{a^n}=a^{m-n}\)

Applying the rule:

\(\frac{14a^2}{24a} \\=\frac{14a^{2-1}}{24}\\Since \ 14 \ and \ 24 \ are \ divisible\ by \ 2 \\=\frac{7a^1}{12} \\=\frac{7a}{12}\)

The simplest form of \(\frac{14a^2}{24a}\)  is \(\mathbf{\frac{7a}{12}}\)

Answer:

4

Step-by-step explanation:

4th one is the answer because 5 is an outlier in the set of data

Answer:

Option 4

Step-by-step explanation:

Answer: x = 24

Step-by-step explanation: coz I juss know

Answer:x=24

Step-by-step explanation:hope this helps!

-10 is closer to zero therefore -10 is the answer

Answer:

-10 is greater than -31

Step-by-step explanation:

To compare numbers, place them on the number line. A number is greater than a number to its left.

<--------------+----------------------+-------+------------------------->

                -31                       -10      0

-10 is to the right of -31, so -31 is greater than -10.

Answer:

Step-by-step explanation:

The expression by canceling out the factor of (x - 2) in the numerator and denominator.

To solve for the missing polynomial, we can start by rearranging the given equation:

(x^2 - 4) ÷ (x + 2) = x - 2

We can then multiply both sides by (x + 2) to eliminate the denominator:

x^2 - 4 = (x - 2)(x + 2)

Expanding the right-hand side using the distributive property, we get:

x^2 - 4 = x^2 - 4

We can see that both sides of the equation are equal, which means that any polynomial that we place in the blank will satisfy the given equation. However, we can simplify the expression by recognizing that the denominator (x + 2) is a factor of the numerator (x^2 - 4), which we can write as:

x^2 - 4 = (x - 2)(x + 2)

Therefore, we can fill in the blank with (x - 2) to obtain:

(x + 2)(x - 2) = x^2 - 4

This polynomial satisfies the given equation and also simplifies the expression by canceling out the factor of (x - 2) in the numerator and denominator.

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Answer:

(10,0)

Step-by-step explanation:

3x+6y=30

3x+6(0)=30

3x=30

x=10

Answer:

hmmm? well I guess I can solve for x in relation to y and vice versa

but to actually solve for x and y you will need another equation of x and y

3x=30+6y

x=10+2y=2y+10

-6y=30-3x

-2y=10-x

2y=-10+x=x-10

y=(1/2)x-5

well, y=(1/2)x-5 is a line with slope 1/2 and y-intercept (0,b) of

Answer:

B, C, D

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

C, D, E

Step-by-step explanation:

2(4f + 2g) = 8f + 4g

C: 8f + 4g

D: 4(2f + g) = 8f + 4g

E: 4f + 4f + 4g = 8f + 4g

Answer:

0.04409 quarter

Step-by-step explanation:

Answer:

arrow 4

Step-by-step explanation:

The amount of energy needed in the transformation from liquid to gas is equal to the gas to liquid transition.

Boiling is the mechanism by which a substance passes from the liquid phase to the gaseous form.

Like water diagram in phase:

Evaporisation is a method of phase shift in which the water transitions from a liquid to a gas (water vapour).

Condensation is the process of phase shift in which water transitions from a gas to a liquid, and the vapour becomes a cloud.

Answer:

4

Step-by-step explanation:

ya boy did the test

The balance increase for card i is $89.24 greater than the balance increase for card h. Card i has a balance of $1,522.16 and an interest rate of 12.05%, compounded monthly. Now, we can calculate the balance for both cards after three years using the compound interest formula: A = P(1 + r/n)^(nt)

Given, Card h has a balance of $1,186.44 and an interest rate of 14.74%, compounded annually.

Card i has a balance of $1,522.16 and an interest rate of 12.05%, compounded monthly. Now, we can calculate the balance for both cards after three years using the compound interest formula: A = P(1 + r/n)^(nt),

where A = final amount, P = principal (initial balance), r = annual interest rate (as a decimal), n = number of times compounded per year, t = time (in years)

For card h,

A = 1186.44(1 + 0.1474/1)^(1*3)

A = 1883.99

For card i, A = 1522.16(1 + 0.1205/12)^(12*3)

A = 1973.23

Therefore, the balance for card i will have increased more than that of card h, and the difference in the increase is: 1973.23 - 1883.99 = 89.24

The balance increase for card i is $89.24 greater than the balance increase for card h. Hence, the required answer is card i.

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Answer: The answer is scientific notation

Step-by-step explanation:

Answer:

0.25

Step-by-step explanation:

Answer: 0.25

Step-by-step explanation: take 100 divide by 2 get 50 so divide by 2 get 25 make 25 a decimal and u get 0.25 ( hope this helps!)

To have an average speed of 4 mph after walking for 1.5 hours at 3 mph, you would need to run at a speed of 9 mph during the next 0.5 hour.

Average speed is calculated by dividing the total distance traveled by the total time taken. In this scenario, you have walked for 1.5 hours at a speed of 3 mph, covering a distance of (1.5 hours) x (3 mph) = 4.5 miles.

To have an average speed of 4 mph over a total time of 2 hours (1.5 hours of walking + 0.5 hours of running), the total distance covered would need to be (2 hours) x (4 mph) = 8 miles.

Since you have already walked 4.5 miles, the remaining distance to cover in the next 0.5 hour (30 minutes) would be 8 miles - 4.5 miles = 3.5 miles.

To find the required speed during the running phase, divide the remaining distance by the time: (3.5 miles) / (0.5 hours) = 7 mph.

Therefore, to have an average speed of 4 mph, you would need to run at a speed of 9 mph during the next 0.5 hour.

To achieve an average speed of 4 mph after walking for 1.5 hours at 3 mph, you would need to run at a speed of 9 mph during the next 0.5 hour. This calculation considers the total distance traveled and the total time taken to determine the required running speed.

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If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, we can use the normal distribution properties to find the percentage of IQ scores between 85 and 130.

Specifically, we can standardize the scores and use a normal distribution table or calculator to find the area under the curve between the z-scores corresponding to 85 and 130.To find the percentage of IQ scores between 85 and 130, we first need to standardize the scores by subtracting the mean and dividing by the standard deviation. This gives:

z1 = (85 - 100) / 15 = -1.00

z2 = (130 - 100) / 15 = 2.00

We can then use a normal distribution table or calculator to find the area under the curve between these two z-scores. For example, using a standard normal distribution table, we can find that the area to the left of z = -1.00 is 0.1587 and the area to the left of z = 2.00 is 0.9772. Therefore, the area between these two z-scores is:

0.9772 - 0.1587 = 0.8185

This means that approximately 81.85% of IQ scores are between 85 and 130. Alternatively, we can use a normal distribution calculator to find the same result. For example, using an online calculator, we can input the mean (100), standard deviation (15), and the lower and upper limits (85 and 130) and obtain a probability of 0.8185, or 81.85%.

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Answer:d

Step-by-step explanation:

Given:

In the given figure \(m\parallel n\parallel p\).

\(m\angle 10=2x+70\)

\(m\angle 7=5x-20\)

To find:

The \(m\angle 3\).

Solution:

If a transversal line intersect two parallel lines, then the alternate exterior angles are equal.

\(m\angle 7=m\angle 10\)          (Alternate exterior angle)

\(2x+70=5x-20\)

\(70+20=5x-2x\)

\(90=3x\)

Divide both sides by 3.

\(\dfrac{90}{3}=\dfrac{3x}{3}\)

\(30=x\)

Now,

\(m\angle 3=m\angle 7\)               (Corresponding angles)

\(m\angle 3=5x-20\)

\(m\angle 3=5(30)-20\)

\(m\angle 3=150-20\)

\(m\angle 3=130\)

Therefore, the measure of angle 3 is 130 degrees.

The estimated cost of the new 3000-ft2 heat exchange system for the plant retrofit can be calculated using the power-sizing exponent and the price index. Based on the given information, the rough estimate for the cost of the new heat exchanger system is approximately $108,984.

To estimate the cost of the new heat exchange system, we need to consider the price index and the power-sizing exponent. The price index provides a measure of the change in prices over time. In this case, the price index 7 years ago was 1360, and the current price index is 1478.

To calculate the cost estimate, we can use the following formula:

Cost estimate = (Cost of previous heat exchanger) × (Current price index / Previous price index) × (New size / Previous size) ^ power-sizing exponent

Using the given information, the cost of the previous heat exchanger was $75,000, the previous size was 1200 ft2, and the new size is 3000 ft2.

Plugging in these values into the formula, we get:

Cost estimate = ($75,000) × (1478 / 1360) × (3000 / 1200) ^ 0.55

Simplifying the calculation, we find:

Cost estimate ≈ $108,984

Therefore, a rough estimate for the cost of the new 3000-ft2 heat exchanger system for the plant retrofit is approximately $108,984. It's important to note that this is just an estimate and the actual cost may vary based on specific factors and market conditions.

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