Can someone answer these questions please

Answer:

$1400

Step-by-step explanation:

Answer:

$1,400.00

Step-by-step explanation:

You have to multiply $8.75 by the 20 hours to get $175, then you multiply that by 8 weeks to get $1,400

Answer:

9 which is the perfect square for 81.

Step-by-step explanation:

mark me brainliest

Answer:

4/7 or 4

Step-by-step explanation:

there are 4 orange marbles out of 7 marbles.

Answer:

When rolling two number cubes, the possible outcomes of the sum of the numbers on the top faces are from 2 (1+1) to 12 (6+6). Since we want to know how many times we can expect the sum to be 7, we need to count the number of ways to get a sum of 7.

The pairs of numbers that add up to 7 are: (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1). So, there are 6 ways to get a sum of 7.

Each time we roll the two number cubes, the probability of getting a sum of 7 is 6/36 or 1/6, since there are 6 possible outcomes that result in a sum of 7 out of a total of 36 possible outcomes.

Therefore, if we repeat this process 300 times, we can expect to get a sum of 7 approximately (1/6) x 300 = 50 times.

So we can expect the two cubes to add to exactly 7 about 50 times when rolled 300 times.

Step-by-step explanation:

The number remaining in the village is 30.

We have to note that the case in which the population of the community is being reduced because of the fact that the community is being ravaged by disease is a case of a decrease in the population and is a problem of exponential decrease.

Then we would have that;

N =Noe^-rt

N = Number at time t

No = Initial number

r = spread rate

t = time taken

Then;

N = 200e^-0.95 * 2

N = 30

Thus, they would have only 30 people left.

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The expression that has the greatest value when n is equal to 4 is option B, n + 30, with a value of 34.

To determine which mathematical expression has the greatest value when n is equal to 4, we can simply substitute 4 for n in each expression and compare the results.

A. 5n = 5(4) = 20

B. n + 30 = 4 + 30 = 34

C. 50 - n = 50 - 4 = 46

D. 80 ÷ n = 80 ÷ 4 = 20

The complete question is: Which expression has the greatest value when n is equal to 4? A. 5n B. n + 30 C. 50 – n D. 80 ÷ n

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Answer:

2

Step-by-step explanation:

The simplified form of √(x^2) when x > 0 is |x|.

When simplifying the expression √(x^2) where x is greater than 0, we can simplify it to just x.

This is because the square root of a positive number will always result in a positive value, and x^2 is always positive when x is positive.

Therefore, the square root of x^2 is simply x.

This simplification follows from the fact that the square root function (√) is the inverse operation of squaring (x^2).

Applying the square root undoes the squaring operation, and since x is already positive, there is no need to introduce the absolute value function. Thus, when x > 0, the simplified form of √(x^2) is x.

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The 500 sample size and 95% confidence level will both tend to increase the width of the confidence interval.

In this question, we have been given  the combinations of sample size and confidence level.

We need to select a combinations of sample size and confidence level that will give the widest interval.

We know that the confidence level is typically set in the range of 99% to 80%. The 95% confidence interval will be wider than the 90% interval and which will be wider than the 80% interval.

As we know increasing the confidence will increase the margin of error which results in a wider interval.

But increasing the sample size decreases the width of confidence intervals, as it decreases the standard error.

This means, for the widest interval we need to select a high confidence interval and small sample size.

Therefore, the sample size = 500 and the confidence interval = 95% will give the widest interval.

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Answer:

3/8

Step-by-step explanation:

I am pretty sure . . . . . .

Answer:

Step-by-step explanation:

b

mode= most

Answer:

B is the answer from this one

Step-by-step explanation:

I did this today aswell and got 100%

Answer: 60 miles

Step-by-step explanation:

1 in. times 3 = 3 in

20 mi times 3 = 60 mi.

Answer: Number 2

Step-by-step explanation: yes

The longest flagopole that could fit in the box is 15.26 feet

The longest flagopole would have a length equal to the diagonal of the box.

It goes, lengthwise, from one vertex to the opposite vertex, and if the dimensions of the box are x, y, z, then the diagonal is:

d = √(x² + y² + z²)

In this case the box is 2ft by 2 ft by 15ft, then the diagonal is:

d = √(2² + 2² + 15²) = 15.26

That is the maximum length that can fit in the box, 15.26ft

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The total surface area of the prism is determined as  216 cm².

The surface area of the prism is calculated by applying the following formula.

The area of the two triangular faces is calculated as follows;

Area of the two triangles = 2 (¹/₂ x base x height )

Area of the two triangles = 2 (¹/₂ x 6 cm x 4 cm )

Area of the two triangles = 24 cm²

The area of rectangular faces is calculated as follows;

A = ( 5 cm x 12 cm ) + (5 cm x 12 cm ) + ( 6 cm x 12 cm )

A = 192 cm²

The total surface area of the prism is calculated as follows;

Area = 24 cm² + 192 cm²

Area = 216 cm²

The sketch of the triangular prism is in the image attached.

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Answer:

Step-by-step explanation:

8 out of 20 horses are brown

so

8/20

so

2/5

so

2/5 * 15 = 6

so

6 horses should be brown out of 15

the mοnthly periοdic interest rate, rοunded tο the nearest hundredth οf a percent is (C) 1.31%

Any lοans and bοrrοwings cοme with interest. the percentage οf a lοan balance that lenders use tο determine interest rates. Cοnsumers can accrue interest thrοugh lending mοney (via a bοnd οr depοsit certificate, fοr example), οr by making a depοsit intο a bank accοunt that pays interest.

We must divide its yearly percentage rate (APR) by 12 tο determine a mοnthly periοdic interest rate (the number οf mοnths in a year).

Hence, the periοdic interest rate fοr each mοnth is:

15.75% / 12 = 1.3125%

The result οf rοunding tο the clοsest hundredth οf such a percent is:

1.31%

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Answer: he will be 14

Step-by-step explanation:

Anna is 14 and her brother is 10. Two years ago she was 12. 3/4 of 12 is 9. 9+5 more years is 14. :)))

The probability that she will make a basket on or before her last attempt within her average waiting time are 1/8 and 2/8

Probability of an event is a measurement of how likely an event can occur as an outcome of a random experiment;

Probability ranges from 0 to 1, both inclusive. Events whose probability is closer to 0 are rarer to occur than those whose probabilities are closer to 1 (relatively);

When converted to percentage, we just need to multiply its decimal representation by 100. In percentage form, the probability ranges from 0% to 100%;

Given:

Hannah makes 5 out of 8 attempted free-throws.

Now,

The average waiting time of hannah to make her first basket is 5/8

The probability of hannah making basket at her last attempt is 1/8

The probability of hannah making basket before her last attempt is 2/8

Hence, the probabilty will be 1/8 and 2/8;

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Answer:

Step-by-step explanation:

We can solve this system of equations by using the method of substitution. First, we can isolate one of the variables in terms of the other from one of the equations. Let's isolate y from the second equation:

2x² - 4y² = 25x - 10

-4y² = -2x² + 25x - 10

y² = (1/2)x² - (25/4)x + 5/2

y = ±√[(1/2)x² - (25/4)x + 5/2]

Now we can substitute this expression for y into the first equation:

2x² + 4y² = 4

2x² + 4[(1/2)x² - (25/4)x + 5/2] = 4

3x² - 25x + 7 = 0

We can solve this quadratic equation by factoring or using the quadratic formula:

3x² - 25x + 7 = (3x - 1)(x - 7) = 0

Therefore, we have two solutions:

3x - 1 = 0 → x = 1/3

x - 7 = 0 → x = 7

We can plug each of these values of x back into either of the two equations to find the corresponding values of y:

For x = 1/3:

y = ±√[(1/2)(1/3)² - (25/4)(1/3) + 5/2] ≈ ±1.807

For x = 7:

y = ±√[(1/2)(7)² - (25/4)(7) + 5/2] ≈ ±2.426

Therefore, the solutions to the system of equations are:

(1/3, ±1.807)

(7, ±2.426)

Answer:

Step-by-step explanation:

You want the solution to the system of quadratic equations ...

Adding the equations together gives ...

  (2x² +4y²) +(2x² -4y²) = (4) +(25x -10)

  4x² -25x +6 = 0

  (4x -24)(4x -1)/4 = 0

  (x -6)(4x -1) = 0

Values of x that satisfy this equation are ...

  x = 6, x = 1/4 . . . . . . . x = 6 is an extraneous solution

For x = 1/4, we have ...

  y² = 1 -x²/2 . . . . . from the first equation

  y = ±√(7/8) = ±(√14)/4

The solutions are (1/4, -√14/4) and (1/4, √14/4).

__

Additional comment

Only one of the branches of the hyperbola of the second equation intersects the ellipse of the first equation. That ellipse in standard form is ...

  x²/2 +y² = 1

Which has a domain of |x|≤√2 and a range of |y|≤1. This is why x=6 is extraneous (not in the domain).

Answer:

x- intercept = - 8 , y- intercept = 4

Step-by-step explanation:

to find the x- intercept let y = 0 in the equation and solve for x

x - 2(0) = - 8

x - 0 = - 8

x = - 8 ← y- intercept

to find the y- intercept let x = 0 in the equation and solve for y

0 - 2y = - 8

- 2y = - 8 ( divide both sides by - 2 )

y = 4 ← y- intercept

Answer: 31.25%

Step-by-step explanation:

Draw a Ven diagram in a rectangle with 2 circles one for F and the other for C. The intersection overlap will have the 10 who play both outside the circles but within the rectangle the 7 who do neither so then fill the rest of F with 4 to give a total of 14 and 11 for the C to total 21. When you add all the numbers you’ll get a class total of 32. Then the % who play both F and C is = (10/32)*100 = 31.25%

Answer:

Question 1: 29

Question 2: 50

Question 3: AD≅BC

Step-by-step explanation:

question 1: Since it's a parallelogram opposite sides are equal.

4x+5=5x-1   add one to both sides

4x+6 =5x subtract 4x from both sides

6 = x

So AD is equal to 5(6) - 1 = 30-1 =  29=AD

Question 2: Since diagonals in a parallelogram bisect each other AE = EC

So...

5x+5 = 8x- 7 add 7 to both sides

5x+12 = 8x subtract 5x from both sides

12=3x divide both sides by 3

4=x

AC= 5(4) + 5 + 8(4) - 7

AC= 20 + 5 + 32 - 7

AC= 50

Question 3: Lines can only be congruent, represented by ≅, not equal which is represented by =. Values can be equal.

By using the elimination method you get the answer  line AD ≅ line BC

Answer:

5^3

125

Step-by-step explanation:

5^0 x 5^3.

When we multiply exponents with the same base, we add  the exponents

a^b * a^c = a^(b+c)

5^(0+3)

5^3

125

Answer:

125

Step-by-step explanation:

\(5^0*5^3\\\\n^0=1\\\\n\neq 0\\\\\Rightarrow 5^0=1\\\\=5^0*5^3\\\\=1*5^3\\\\=5^3\\\\=125\)

The most accurate way to estimate the percentage of the given value = ¼×66. Which is option C

Percentage is defined as the representation of a given value all over 100 and is given with a symbol of %.

The given value.= 66

The 26% of 66 would be given as follows;

26/100 × 66/1

= 1716/100

= 17.16

Therefore, the most accurate way to represent 26 percentage of 66 would be = ¼ × 66 which would be = 16.5 and is approximately 17.

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Complete question:

Which is the most accurate way to estimate 26% of 66

¼×64

⅔×60

¼×66

⅔×60

Answer:

15:24, 20:32 and 40:64.

Step-by-step explanation:

hope this helps

Answer:

The ratios that work is 15:24 because 5 x 3= 15, 24 x 3 = 24 as they both have a 3 as factors. There's also 20:32 as they both have a 4 as factors and  lastly 16:10 because they both have a 2 as factors.

Step-by-step explanation:

The ratios that work is 15:24 because 5 x 3= 15, 24 x 3 = 24 as they both have a 3 as factors. There's also 20:32 as they both have a 4 as factors and  lastly 16:10 because they both have a 2 as factors.

Answer:

volume is 36.25inches

145/4

Step-by-step explanation:

L= 3 5/8inches

W= 2 1/2inches

H= 4inches

VOLUME = L×W×H

3 5/8 × 2 1/2 × 4 =

29/8 × 5/2 × 4 = 36.25inches

36.25→145/4

Step-by-step explanation:

Supplementary angles are angles that sum up to 180°.

Since Angles O and P are supplementary,

Angle P = 180° - Angle O = 180° - 157° = 23°.

Answer:

13,236 minor earthquakes occurred

Step-by-step explanation:

\(\frac{Part}{Total}\)

"x" part amount of earthquakes

14,905 total amount of earthquakes

88.8 % part percentage of earthquakes

100% total percentage of earthquakes

\(\frac{x}{14905}\) = \(\frac{88.8}{100}\)

x = 14,905 × \(\frac{88.8}{100}\)

x = 14,905 × 0.888 = 13,235.64 ≈ 13,236 minor earthquakes occurred