i need help 9th grade math

Answer:

c

Step-by-step explanation:

The estimated areas are listed below:

Right Riemann sum based on trapezoids offer a compact method that combines upper and lower sums, which is defined below:

[tex]A = \frac{b-a}{2\cdot n}\cdot \sum_{i = 0}^{n-1} [f(x_{i})+f(x_{i+1})][/tex]   (1)

Where:

In this question we must apply right Riemann sums to estimate the areas of functions on given intervals. Now we proceed to solve each case below:

[tex]A = \frac{1-0}{2\cdot (4)} \cdot [(0+\sqrt{0.5})+(\sqrt{0.5} + 1)+(1+\sqrt{1.5})+(\sqrt{1.5}+2)][/tex]

A ≈ 0.806

The area of the function is approximately 0.806. [tex]\blacksquare[/tex]

[tex]A = \frac{2-0}{2\cdot (4)}\cdot [(4+1.472)+(1.472+0.541)+(0.541+0.199)+(0.199-0.073)][/tex]

A ≈ 2.088

The area of the function is approximately 2.088. [tex]\blacksquare[/tex]

[tex]A = \frac{2-1}{2\cdot (5)} \cdot [(1+0.833)+(0.833+0.714)+(0.714+0.625)+(0.625+0.556)+(0.556+0.5)][/tex]

A ≈ 0.696

The area of the function is approximately 0.696. [tex]\blacksquare[/tex]

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Answer:

1/6

Step-by-step explanation:

Hope it helps you in your learning process

Answer:

the second one

Step-by-step explanation:

1/6

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Answer:

The answer is 100 in

Step-by-step explanation:

The pythagorean theorm states that, for any right triangle where a and b are the legs and c is the hypotenuse, a^2 + b^2 = c^2. So, we can substitute and solve.

18^2 + 26^ 2 = c^2

324 + 676 = c^2

1000=c^2

Square root of 1000 = c

100.0=c

Hope this helps!

Answer:

C. [tex]1\frac{2}{10}[/tex]

Step-by-step explanation:

[tex]\frac{30}{100}+\frac{9}{10}=\frac{30}{100}+\frac{90}{100}[/tex]

[tex]\frac{30}{100}+\frac{90}{100}=\frac{120}{100}[/tex]

[tex]\frac{120}{100}=1\frac{20}{100}[/tex]

[tex]1\frac{20}{100}=1\frac{2}{10}[/tex]

Explanation:

[tex] \frac{300}{100} + \frac{9}{10} [/tex]

[tex] \frac{30}{10} + \frac{9}{10} [/tex]

[tex] \frac{3 + 9}{10} [/tex]

[tex] \frac{3 + 9}{10} = \frac{12}{10} [/tex]

Cross out common factors.

[tex] \frac{6}{5} [/tex]

Answer:

[tex]1 \frac{2}{10} [/tex]

Hope this helps.

The system of equations has two distinct equations

The solution to the system of equations is (-2,-1)

The system of equation is given as:

y = 2x + 3

And

y = 3x + 5

Start by plotting the graphs of the equations

From the graph (see attachment), we have:

(x,y) = (-2,-1)

Hence, the solution to the system of equations is (-2,-1)

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The critical value for z for a hypothesis test using a 5% significance level is 1.65

It is given that the reporter wants to test the store's claim against the alternative hypothesis that the wait time is actually greater than 60 minutes.

It is required to find the critical value for z for a hypothesis test using a 5% significance level.

It is defined as the continuous distribution probability curve which is most likely symmetric around the mean. At Z=0, the probability is 50-50% on the Z curve. It is also called a bell-shaped curve.

We have a hypothesis H1 that wait time is actually greater than 60 minutes.

H1(T>60)

This is the case of the right-tailed hypothesis.

We have a significance level = 5% ⇒ 0.05

The statistics follow a normal distribution curve

Critical value = 1.6449 ≈ 1.65  (from the table at 5% significance level)

Thus, the critical value for z for a hypothesis test using a 5% significance level is 1.65

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Answer:

I think it was the third century b.c. If not then I am sorry.

Step-by-step explanation:

a = 7

d = 14-7 = 7

s(50) = n/2*[a+(n-1)*d]

         = 50/2*[7+(50-1)*7]

         = 8750

Answer:

Step-by-step explanation:

3) Opposite sides of a parallelogram are parallel

4) Alternate interior angles theorem

5) Reflexive property

6) ASA

Answer:

P = 72 ft

Step-by-step explanation:

the perimeter P is the sum of the 3 sides.

Tangents to a circle from an external point are congruent , then

side 24 = 15 + 9

side 21 = 9 + 12

Third side = 12 + 15 = 27 ft

P = 24 + 21 + 27 = 72 ft

Answer:

80

Step-by-step explanation:

if you make a ratio table

32ginger ale = 12orange juice

now we now 6x5=20 so we can divide 12 by 2 which would give us 6 and the same with 32 which would give us 16 now you have

16ginger ale = 6 orange juice

and we need 30 orange juice so 6x5= 30 and we multiply 16 by 5 too so 16x5=80 t

therefore

80 ginger ale = 30 orange juice

answer:

52

explanation:

52 is the highest shared factor of the two numbers.

52*5=260

52*7=364

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Answer:

96.7%

Step-by-step explanation:

87/90 = 0.96666666

To make this number a percentage, we move the decimal point two places to the right. Her grade would be 96.6666 percent, which rounds up to 96.7%

Answer:

96.7%

Step-by-step explanation:

87÷90×100

The formula that describes the width of the rectangle as a function of length is w = 55 / m.

area of a rectangle = lw

where

Therefore,

area = 55 inches²

length = m

width = w

Hence,

area = mw

55 = mw

divide both sides by m

55 / m = wm / m

w = 55 / m

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The quantity of water the farming conglomerate would use 17 years from now is 65,708.11.

The formula for calculating the amount of water that would be needed 1 years from now:

FV = P (1 + r)^N

13000 x 1.1^17 = 65,708.11

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Answer:

13 players

Step-by-step explanation:

Money Raised=RentedBus+Meals

1319.25=776.50+41.75p (p is for the number of players)(Now we solve for x)

Subtract 776.50 from both sides:   542.75=41.75x

Divide both sides by 41.75:   13=x

Remember that x is for the number of players so there'll be 13 players going to the tournament.

Answer:

6

Step-by-step explanation:

4 units x 3 units = 12 units / 2 to get a triangle

Answer:

Equally Likely

Step-by-step explanation:

The answer is equally likely because equally likely events have the same probability of happening as another event.

For example, a fair coin.

It has a 1/2 chance of beng tails, and 1/2 chance of being heads, meaning that both tails and heads are Equally Likely to land.

Hope this helps!

If an event has a probability of 1/2 then the likelihood of this event is,

C. Equally likely.

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

As equally likely occurrences have the same likelihood of occurring as other events, the answer is equally likely.

A fair coin is an illustration.

Both tails and heads are equally likely to land because there is a 1/2 chance that it will be one or the other.

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Answer: The answer is 8

Step-by-step explanation: If you round 9 52/69 you get 10 approximately and -1 29/50 is approximately -2 so 10-2=8

Answer:

136 tickets

You have to do 8x17

"7 * 4

the * is times

Step-by-step explanation:

that's it in expanded form"

Expanding the expressions:

1)

⇒ (-6)⁵

⇒ (-6)(-6)(-6)(-6)(-6)

⇒ -7776

2)

⇒ (-2)³

⇒ (-2)(-2)(-2)

⇒ (4)(-2)

⇒ -8

3)

⇒ (-3)⁴

⇒ (-3)(-3)(-3)(-3)

⇒ (9)(9)

⇒ 81

4)

⇒ (-1)⁵

⇒ (-1)(-1)(-1)(-1)(-1)

⇒ -1

Answer: 48

Step-by-step explanation:

Answer:

See below, please

Step-by-step explanation:

Volume

[tex] = (x + 12) \times (x + 3) \times 2x[/tex]

[tex] = ( {x}^{2} + 15x + 36) \times 2x[/tex]

[tex] = 2 {x}^{3} + 30 {x}^{2} + 72x[/tex]

Answer:

1.10 x 108.

Step-by-step explanation:

Answer:

1.  The relationship between the cost per person and the amount of persons sharing the cost is an inverse relationship because as the number of persons sharing the cost increases the cost per person decreases.

2. c = 1500 / p

Step-by-step explanation:

1. Lets look at the cost comparison per number of tenants.

1 person = $1500 per person

2 people = $750 per person

3 people = $500 per person

As you see, as the number of people increase, the cost per person decreases.

2. If you are splitting the cost, then you are dividing equally.

The rent is divided between the number of people

      1500    /                                    p

c = 1500 / p

Answer:

1.  The relationship between the cost per person and the amount of persons sharing the cost is an inverse relationship because as the number of persons sharing the cost increases the cost per person decreases.

2. c = 1500 / p

Step-by-step explanation:

1. Lets look at the cost comparison per number of tenants.

1 person = $1500 per person

2 people = $750 per person

3 people = $500 per person

As you see, as the number of people increase, the cost per person decreases.

2. If you are splitting the cost, then you are dividing equally.

The rent is divided between the number of people

     1500    /                                    p

c = 1500 / p

395.64 sq. mm

hope it helps...!!!

Answer:

Perimeter of base: 40 :)

10 + 10 + 10 + 10 = 40

Slant height: 13

(it gives us this information) :)

Area of base: 100

10^2 = 100

Surface area: 65000

(1/2)(100 x 13)

1/2(1300)

650

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Answer and Explanation:

1) The perimeter is the sum of the base's side lengths, so it is:

P = 10 ft * 4 = 40 ft

2) The height can be calculated using the Pythagorean Theorem. Take half of the base's side length for the short leg (5 ft) and the slant height (13 ft) for the hyptenuse:

5^2 + h^2 = 13^2

25 + h^2 = 169

h^2 = 144

h = 12 ft

3) To find the lateral area, take the area of one of the triangular faces of the pyramid and multiply it by 4, since there are 4 triangular faces:

LA = 4 * (1/2)(10 * 13)

= 4 * 65

= 260 ft

4) The area of the base is the product of its dimensions:

A(base) = 10 * 10

= 100 ft^2

5) Surface area is the sum of the lateral area and the base's area, so just plug in the values from problems 3 and 4:

SA = LA + A(base)

= 260 + 100

= 360 ft^2