Someone please help me I’ll give out brainliest please dont answer if you don’t know

The number of books donated by Hannah in terms of b will be b/50.

Arithmetic operators are four basic mathematical operators summation, subtraction, division, and multiplication involve.,

As per the given,

The average number of books donated will be,

Number of books/Total number of students

⇒ b/150.

It is given that Hannah donates 3 times as much as average,

3 x b/150 = b/50

Hence "Hannah will donate b/50 books, or b books, in terms of b".

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Complete question below,

Hannah’s school hosted a book donation. There are 150 students at her school, and they donated a total of b books. Hannah donated 3 times as many as the average number of books each student donated. How many books did Hannah donate? Write and expression

Answer:

a) 2

b) 93

Step-by-step explanation:

a) 4x - 2y

   4(3) - 2(5)

   12 - 10

   2

b) 2x^2 + 3y^2

   2(3)^2 + 3(5)^2

   2(9) + 3(25)

   18 + 75

   93

The best represents causation is D, As the sale of winter coats increase the amount of hot chocolate sold decreases.

Causation can be defined as the capacity of one variable to influence another. The first variable may bring the second into existence.

There are two types of causation:

Therefore the correct option is D because the best way to represent causation is when a sale of winter coat increases the amount of hot chocolate sold  decreases.

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We can calculate the shaded area as the area of the trapezoid less the area of the circle.

The area of the trapezoid is:

The area of the circle of radius r=8/2=4 ft is:

Then, the shaded area is the difference between the area of the trapezoid and the area of the circle:

Answer: 101.7 ft^2

Answer:8

Step-by-step explanation:

6x+10=58

6x=48

X=8

Answer: ∠WZY=150°

Step-by-step explanation:

Analysis :

ΔWXY is an isosceles triangle

perpendicular to WX intersecting:

XY at A

∠XWA = 21°

∠WXA = 90°-21° = 69°

Now, ΔXYZ is equilateral,

∠XYZ = ∠YXZ = 60°

Then,

∠WXZ = ∠WXA - ∠YXZ

= 69°-60°

= 9°

Since the angles of a triangle = 180°

∠WZY = ∠WZX = 180° - ∠XWA - ∠WXZ

= 180° - 21° - 9°

= 150°

Step-by-step explanation:

a....................................

Answer:

\(\frac{85}{17}\)

8.5/1.7 multiply by 10 to each side to get 85/10

Answer:

x= -26/3

Step-by-step explanation:

14+x=

−1

2

(x−1)+

1

2

14+x=(

−1

2

)(x)+(

−1

2

)(−1)+

1

2

(Distribute)

14+x=

−1

2

x+

1

2

+

1

2

x+14=(

−1

2

x)+(

1

2

+

1

2

)(Combine Like Terms)

x+14=

−1

2

x+1

x+14=

−1

2

x+1

Step 2: Add 1/2x to both sides.

x+14+

1

2

x=

−1

2

x+1+

1

2

x

Answer:

x = -26/3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Add 1/2x to both sides.

Step 3: Subtract 14 from both sides.

Step 4: Multiply both sides by 2/3.

Answer:

It will take Machine A 20 additional minutes.

Step-by-step explanation:

First we have get the rate of work per hour, Machine A builds 1/2 of a car per hour, while Machine B builds 1/3 of a car per hour.

Using this we can determine the amount of work that has been done so far in one hour before Machine B broke down:

1/2 + 1/3 = 3/6 + 2/6 = 5/6

Now we can produce an equation accordingly to determine how much time it'll take machine a to finish the job:

5/6 + 1/2x = 1

1/2x = 1/6

x = 1/3 hours = 20 minutes

Note: In the question you typed "how much additional time will it take machine b to finish" but I think you meant machine a because machine b broke down. Please correct me if I'm wrong.

Hope this helps! And let me know if you have any questions!

Answer:

The answer is ab32

Step-by-step explanation:

ab x 8 x 4 = ab32

Answer: a^4b^32

Step-by-step explanation: (ab^8)^4 = (ab^8)(ab^8)(ab^8)(ab^8) = a^4b^32

\(\large{\underline {\underline {\frak {SolutioN:-}}}}\)

➝ -4 × (-2) [2 × (-6)+ 3×(2×6-4-4) ]

➝ -4 × (-2) [2 × (-6) + 3 × (12-4-4) ]

➝ -4 × (-2) [2 × (-6) + 3 × (12-8) ]

➝ -4 × (-2) [2 × (-6) + 3 × (4) ]

➝ -4 × (-2) [2 × (-6) + 12 ]

➝ -4 × (-2) [(-12) + 12 ]

➝ -4 × (-2) [0]

➝ -4 × 0

➝ 0

Answer:

-4*-2

Step-by-step explanation:

the multiple of both side is 4*2*,26+*32*--=6 44

Answer:

To solve this problem you must apply the procedure shown below:

1. You have that ladder measures 10 foot and forms and angle of 70 degrees with the ground.

2. Therefore, you have:

Sinα=opposite/hypotenuse

α=70°

opposite=x

hypotenuse=10

3. When you substitute the values, you obtain:

Sin(70°)=x/10

4. Now, solve for x, as following:

x=(10)(Sin(70°)

x=9.39 feet

Therefore, the answer is: 9.39 feet.

Step-by-step explanation:

Using the unitary method, the cost of 3 meters, 6 meters, and 9 meters of cloth with a cost of 320 for 5 meters is 192, 384, and 576 respectively

To use the unitary method, we need to find the cost per unit length of the cloth first.

Cost per unit length = Cost of 5m of cloth / Length of cloth = 320 / 5 = 64 per meter

Now, we can use this cost per meter to find the cost of different lengths of cloth

Cost of 3 meters of cloth = 64 x 3 = 192

Cost of 6 meters of cloth = 64 x 6 = 384

Cost of 9 meters of cloth = 64 x 9 = 576

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The final factorized form of the expression (a - b) (x²-7) - (a - b) (4x + 5) is:(a - b) (x - 6) (x + 2)

Given expression is (a - b) (x²-7) - (a - b) (4x + 5).Here, (a - b) is a common factor in the given expression. We can factor out (a - b) as follows:(a - b) (x²-7) - (a - b) (4x + 5) = (a - b) [(x² - 7) - (4x + 5)] = (a - b) (x² - 4x - 12)Next, we can further factorize the expression x² - 4x - 12 as follows:x² - 4x - 12 = (x - 6) (x + 2)

Therefore, the final factorized form of the expression (a - b) (x²-7) - (a - b) (4x + 5) is:(a - b) (x - 6) (x + 2) - this is the answer.

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Answer:

75 minutes or 1 hour and 15 minutes

Step-by-step explanation:

15·5=75

Answer:

3 min's per question

Step-by-step explanation:

Given:

Every different letter in this addition problem stands for a different digit.

The value of TEST is 1089

The probability solved by binomial distribution that all will survive is 0.8154.

When each trial has the same probability of achieving a given value, the number of trials or observations is summarized using the binomial distribution. The likelihood of observing a specific number of successful outcomes in a specific number of trials is determined by the binomial distribution.

Computation of probability of all survived people from heart attack;

A heart attack patient has a 0.04 percent chance of dying from the attack (i.e., 4 of 100 die of the attack).

What is the likelihood that each of the five patients who experience a heart attack will survive?

We'll refer to a victory in this scenario as a heart attack (p = 0.04). In other words, we are interested in the likelihood that none of our n=5 patients will die (0 successes).

Each attack has a chance of being fatal or not, with a probability of 4 percent for all patients, and each patient's result is independent.

Assume for the purposes of this example that the five individuals being examined are unrelated, of the same age, and free of any concomitant disorders.

By binomial distribution,

\(\begin{gathered}P(0 \text { successes })=\frac{5 !}{0 !(5-0) !} 0.04^{0}(1-0.04)^{5-0} \\P(0 \text { successes })=\frac{5 !}{5 !}(1)(0.96)^{5}=(1)(1)(0.8154)=0.8154\end{gathered}\)

Therefore, with a 4 % chance that anyone will die, there is an 81.54% chance that every patient will survive the onslaught. The outcomes in this example could be 0, 1, 2, 3, 4 or 5 successes (fatalities).

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Answer:

Step-by-step explanation:

⅓x - 20 = 72

⅓x = 92

x = 276

The 90% confidence interval for the proportion of district residents in favor of starting the school day 15 minutes later is (0.392, 0.548). The true proportion is estimated to lie within this interval with 90% confidence.

To calculate the 90% confidence interval for the true proportion of district residents who are in favor of starting the school day 15 minutes later, we can use the following formula:

CI = p ± z*(√(p*(1-p)/n))

where:

CI: confidence interval

p: proportion of residents in favor of starting the day later

z: z- score based on the confidence level (90% in this case)

n: sample size

First, we need to calculate the sample proportion:

p = 94/200 = 0.47

Next, we need to find the z- score corresponding to the 90% confidence level. Since we want a two-tailed test, we need to find the z- score that cuts off 5% of the area in each tail of the standard normal distribution. Using a z-table, we find that the z- score is 1.645.

Substituting the values into the formula, we get:

CI = 0.47 ± 1.645*(√(0.47*(1-0.47)/200))

Simplifying this expression gives:

CI = 0.47 ± 0.078

Therefore, the 90% confidence interval for the true proportion of district residents who are in favor of starting the school day 15 minutes later is (0.392, 0.548). We can be 90% confident that the true proportion lies within this interval.

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The points on the circle are (6, 8) and (-6, -8)

The equation that represents the circle is given as:

Circle equation: x^2 + y^2 = 100

The slope is given as:

Slope: m = 3/4

Start by differentiating the circle equation.

This is done as follows:

So, we have:

2x x' + 2y y' = 0

Divide through the equation by 2

x x' + y y' = 0

Subtract x x' from both sides of the equation

y y' = -x x'

This gives

y'/x' = -x/y

The expression represents the slope.

So, we have:

x/y = 3/4

Make x the subject

x = 3y/4

Substitute x = 3y/4 in x^2 + y^2 = 100

(3y/4)^2 + y^2 = 100

Evaluate the exponent

9y^2/16 + y^2 = 100

Multiply through by 16

9y^2 + 16y^2 = 1600

This gives

25y^2 = 1600

Divide by 25

y^2 = 64

Take the square root

y = ±8

Substitute y = ±8 in x = 3y/4

x = 3 * ±8/4

This gives

x = ±6

Hence, the points on the circle are (6, 8) and (-6, -8)

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Answer:

5 or 5/8

Step-by-step explanation:

To go from 10/16 to a bottom number/denominator of 8, you have to divide by 2.

Whatever you do to the top, you also do to the bottom, so you would divide 10, the numberator, by 2 to find the missing value.

10/2 is 5.

There is your answer.

Answer: I'd say reflection

Answer:

It is a reflection

Step-by-step explanation:

In Geometry, a reflection is known as a flip. A reflection is a mirror image of the shape. An image will reflect through a line, known as the line of reflection. A figure is said to reflect the other figure, and then every point in a figure is equidistant from each corresponding point in another figure.

Answer:

Take a look at the attachment below

Step-by-step explanation:

The interval of I₁ or I₂ or I₄ is  (2.5 ,10].

The interval of I₁ and I₂ is  [3 , 5.5] .

The interval of I₁ and I₃ is  [5.5]

The interval of I₁ and I₄ is (5.6 , 7]

(a) because the all 3 intervals square measure connected by or which suggests they're going to all embrace the quantity lying from interval one to three and is given by (2.5 ,10].

(b) because the interval square measure connected by and which suggests the common numbers lying in interval one and a couple of and is given by [3 , 5.5] .

(c) because the interval square measure connected by and which suggests the common numbers lying in interval one and three and is given by [5.5]

(d)As the interval square measure connected by and which suggests the common numbers lying in interval one and four and is given by (5.6 , 7] .

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The complete question is given below :

Given the intervals I₁ = (2.5, 5.5], I₂ =[3, 6], I₃=[5.5, 7] and I₄ = (5.5, 10]. Find

(a) I₁ or I₂ or I₄

(b) I₁ and I₂

(c) I₁ and I₃

(d) I₁ and I₄

The hotel owner needs approximately 2,248 square feet of fabric to make a pool covering for the winter for their regular hexagonal pool with a side-to-side length of 30 feet.

To calculate the area of the pool, we first need to find the apothem (the distance from the center of the hexagon to the midpoint of any side). For a regular hexagon, the apothem is equal to the side length times the square root of 3 divided by 2. So, the apothem of this hexagonal pool is:

apothem = 30 × √3/2 = 25.980762

The area of a regular hexagon is given by the formula:

area = 3 × √3/2 × apothem^2

Substituting the value of the apothem, we get:

area = 3 × √3/2 × 25.980762^2 = 2247.72

Rounding this to the nearest square foot, the hotel owner will need approximately 2,248 square feet of fabric to construct the cover for the pool.

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Linear equations

Apply the multiplicative law of distribution.

Rearrange the unknown terms on the left side of the equation.

Combine as terms

Calculate the sum or difference.

Divide both sides of the equation by the coefficient of the variable.

The answer is x = - 9/4. Because if we do the division, the result is not exact; means that the result is decimal.

Answer:

x = -9/4

Step-by-step explanation:

2(5x+3)=6x-3

10x + 6 = 6x - 3

10x - 6x = -3 - 6

4x = -3 - 6

4x = -9

The answer is x = -9/4

\(3 \times \frac{5}{11} \)

turns into

\( \frac{3}{1} \times \frac{5}{11} = \frac{15}{11} = 1 \frac{4}{11} \)

\(12 \times \frac{3}{4} = \frac{12}{1} \times \frac{3}{4} = \frac{36}{4} = 9\)

Because 36 goes into 4 nine times.