free brainly if you answer this right 2+2x3x4

Answer:

step 1 is wrong ........

Answer:  $130 money did Brenda and Hazel have all together before buying decorations and snacks.

Here, we have,

You want to know Brenda and Hazel's combined money when the ratio of their remaining balances is 1 : 4 after Brenda spent $58 and Hazel spent $37. They had the same amount to start with.

Setup

Let x represent the total amount the two women started with. Then x/2 is the amount each began with, and their fnal balance ratio is ...

 (x/2 -58) : (x/2 -37) = 1 : 4

Solution

Cross-multiplying gives ...

 4(x/2 -58) = (x/2 -37)

 2x -232 = x/2 -37 . . . . . . eliminate parentheses

 3/2x = 195 . . . . . . . . . . . . add 232-x/2

 x = (2/3)(195) = 130 . . . . . multiply by 2/3

Brenda and Hazel had $130 altogether before their purchases.

Alternate solution

The difference in their spending is $58 -37 = $21.

This is the same as the difference in their final balances.

That difference is 4-1 = 3 "ratio units", so each of those ratio units is $21/3 = $7.

Their ending total is 1+4 = 5 ratio units, or $35.

The total they started with is $58 +37 +35 = $130.

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complete question:

Brenda and Hazel decide to throw a surprise party for their friend, Aerica. Brenda and Hazel each go to the store with the same amount of money. Brenda spends $58 on decorations, and Hazel spends $37 on snacks. When they leave the store, the ratio of Brenda’s money to Hazel’s money is 1 : 4. How much money did Brenda and Hazel have all together before buying decorations and snacks?

The approximate area of the composite figure is 71.13 square centimeters. None of the given answer choices are exact, but the closest one is D. 67.12 square centimeters.

Area of composite shape equals area of square plus area of rectangle. The composite shape's area is 14 + 9 = 23 square inches. The resulting composite shape has a surface area of 23 square inches.

We must first determine the areas of the three simpler shapes in order to combine them together to determine the area of the composite figure.

The first shape is a rectangle that measures 8 cm in length and 6 cm in breadth. Its surface area is 8 by 6 cm, or 48 square cm.

A semicircle with a diameter of 6 cm makes up the second form. It has a 3 centimeter radius. Half of a full circle's area is contained within a semicircle.

1/2 × π × 3 cm × 3 cm = 4.5 π square cm ≈ 14.13 square cm (rounded to two decimal places)

A triangle with a 6 cm base and 3 cm height makes up the third shape. Its geographical range is:

1/2 × 6 cm × 3 cm = 9 square cm

We sum the areas of the three shapes to obtain the area of the composite figure.

48 square cm + 14.13 square cm + 9 square cm ≈ 71.13 square cm

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Answer:

y = 24x + 80

Where x is the number of weeks of saving and y is the dollar amount in her savings

Explanation:

We need to find the equation of the line. If x is the number of weeks of saving and y is the amount in her savings, the equation has the following form

y = mx + b

Where m is the slope and b is the y-intercept.

The slope can be calculated using two points in the line (x1, y1) and (x2, y2) as follows

Then, replacing (x1, y1) = (0, 80) and (x2, y2) = (5, 200), we get:

Additionally, the y-intercept is the point where the graph crosses the y-axis. In this case, the point is (0, 80), so the value of b is 80.

Therefore, the equation of the line is

y = 24x + 80

Where x is the number of weeks of saving and y is the dollar amount in her savings

Answer:

x < 6

Step-by-step explanation:

3x < 18 ( divide both sides by 3 )

x < 6

The probability density function will be expressed as f_M(x) = n * x^(n-1) and cumulative density function is f_Z(z) = n * (1-z)^(n-1).

To find the probability density function of M, we need to find the probability that M takes on a particular value x, which is equal to the probability that all of the random variables U1, ..., Un are less than or equal to x. Since the Ui are independent, this probability is equal to the product of the individual probabilities that each Ui is less than or equal to x. Since each Ui has a uniform distribution over [0, 1], the probability that Ui is less than or equal to x is simply x. Therefore, the probability that M takes on a particular value x is equal to x^n.

This means that the probability density function of M is given by:

f_M(x) = n * x^(n-1)

for x in the range [0, 1].

For the second part of the question, we want to find the cumulative distribution function (c.d.f.) and probability density function (p.d.f.) of Z = min(U1, ..., Un). We can find the c.d.f. of Z by finding the probability that Z is less than or equal to a particular value z. This is equal to the probability that all of the random variables U1, ..., Un are greater than or equal to z. Since the Ui are independent, this probability is equal to the product of the individual probabilities that each Ui is greater than or equal to z. Since each Ui has a uniform distribution over [0, 1], the probability that Ui is greater than or equal to z is simply 1-z. Therefore, the probability that Z is less than or equal to z is equal to (1-z)^n.

This means that the cumulative distribution function of Z is given by:

F_Z(z) = (1-z)^n

for z in the range [0, 1].

To find the probability density function of Z, we can differentiate the cumulative distribution function with respect to z. This gives us:

f_Z(z) = n * (1-z)^(n-1)

for z in the range [0, 1].

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Answer:

Below

Step-by-step explanation:

The equation to use for CONTINUOUS compounding is :

FV = PV e^(it)

18532.08 = 8327 * e^( i*10)        where i is the interest in decimal form

18532.08/8327  = e^(10i)

2.225541 = e^(10i)             now take natural log  (ln) of both sides to get

.8000 = 10i

i = .08     or 8% interest

Answer:

Unit rate = 2 sneezes per minute

Step-by-step explanation:

40 sneezes in 20 minutes.

One quantity is 1 in unit rate with respect to other.

Unit rate = \(\frac{40\ sneezes}{20\ minutes}\)

Unit rate = 2 sneezes per minute

Answer:

Graph 4

Step-by-step explanation:

I have to put more words lol

Answer:

9

Step-by-step explanation:

3x−2=2x+7

Step 1: Subtract 2x from both sides.

3x−2−2x=2x+7−2x

x−2=7

Step 2: Add 2 to both sides.

x−2+2=7+2

Answer:

x=9

Answer:

9

Step-by-step explanation:

3x-2=2x+7

3x-2x-2+2=2x-2x+7+2

x=9

3(9)-2=2(9)+7

27-2=18+7

25=25

Answer:

9 km

Step-by-step explanation:

you add the distance Aaron ran

Answer:

Step-by-step explanation:

Answer:

In the equation :

\(2x^2+6x-5\)

α + β = -b/a

        = -6/2

         = -3

αβ = c/a

         = -5/2

I hope this will help you

Pls mark my answer as brainliest

Answer:

C.)

Step-by-step explanation:

that is exactly the definition of the derivative.

the derivative is the limit of

(f(x+h) - f(x))/((x+h) - x) = (f(x+h) - f(x))/h

with h going to 0.

this is the limit of the standard rate of change concentrated on a single point = the slope of the tangent at that point.

The vertices of the feasible region is (4, 3)

From the question, we have the following parameters that can be used in our computation:

x + y ≤ 7

x - 2y ≤ -2

x ≥ 0

y ≥ 0

Express as equations

So, we have

x + y = 7

x - 2y = -2

Subtract the equations

3y = 9

So, we have

y = 3

Next, we have

x + 3 = 7

This gives

x = 4

Hence, the vertex of the feasible region is (4, 3)

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Answer:

A). 55

Step-by-step explanation:

Number of Variegated Fritillaries for each year is

2009 = 7

2010= 95

2011= 63

The sum total of the samples= 7+95+63

The sum total of the samples= 165

Number of years= 3

The average= total/number of years

The average= 165/3

The average= 55

Answer: A

Step-by-step explanation: I have a massive brain (•-*•)

Answer:

the length is 41 inches, the width is 9 inches

Step-by-step explanation:

let "x" represent the width

if "x" represents the width, then "4x+5" represents the length

perimeter of a rectangle = 2(length+width)

100 = 2(4x+5+x)

100 = 2(5x+5)

100= 10x +5

10x = 100 - 5

10x = 90

x = 9

width is 9 inches, but you still need to solve for length

length = 4x+5"

4(9)+5=41

CHECK:

2(length+width) = 100

2(41+9) = 100

100=100

Answer:

  1/50

Step-by-step explanation:

  (1/10) ÷ 5 = (1/10) × (1/5) = (1×1)/(10×5) = 1/50

The intermediate step in the form (x+a)²=b as a result of completing the square for the equation x² + 2x = 319 is (x+1)² = 320.

To use completing the square to solve the equation x² + 2x = 319, we have to write the left-hand side of the equation as a perfect square.

Add the square of half of the coefficient of x to both sides of the equation:

x² + 2x + (2/2)² = 319 + (2/2)²

x² + 2x + 1 = 320

The left-hand side of the equation can now be factored as a perfect square:

(x+1)² = 320

This is the equation in the form (x+a)²=b, where a=1 and b=320.

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The complete question is as follows:

What is the intermediate step in the form (x+a)²=b as a result of complementing the square for the following equation?

x² + 2x = 319

Answer:

Question 4: 70 degrees

Question 5: 150 degrees

Step-by-step explanation:

Question 4:

The shape is a polygon therefore we need to first find the sum of the angle. The formula is: (number of sides - 2) * 180

Rewrite: (5 - 2) * 180 = 540

To get the answer we add all angles together which is:

135 + 120 + 80 + 135 = 470

Minus to get the last angle:

540 - 470 = 70 degrees

So the answer is 70 degrees:

x = 70 degrees

Question 5:

Again the type of shape is an polygon so first we need to find the sum of the angle.

(6 - 2) * 180 = 720

Next add up all the angles together. The square boxes mean the angle is a right angle. So we can just add 90 degrees for every box you see.

90 + 90 + 120 + 120 = 420

Minus the answer with the sum of the total angle to get the missing value:

720 - 420 = 300 degrees

Next since there are two x, and they are at the same position they are the same value so we can just divide and get the answer.

300 / 2 = 150 degrees

Therefore the answer for both x are 150 degrees:

x = 150 degrees.

The vοlume οf the prism is 14 cubic feet.

A three-dimensiοnal structure having six rectangular faces is called a prism. It is alsο knοwn as a rectangular cubοid οr a rectangular parallelepiped.

The prism is cοmpletely filled with 1750 cubes that have an edge length οf 1/5 ft. This means that the vοlume οf each cube is \((1/5)^3 = 1/125\) cubic feet.

Tο find the vοlume οf the prism, we can divide the tοtal vοlume οf the cubes by the number οf cubes:

Vοlume οf prism = (Vοlume οf οne cube) x (Number οf cubes)

Vοlume οf prism = (1/125) x 1750

Vοlume οf prism = 14 cubic feet

Therefοre, the vοlume οf the prism is 14 cubic feet.

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Step-by-step explanation:

\(bg + 9f = 27 \\ \)

\(bg + 9f - 9f = 27 - 9f\)

\(bg = 27 - 9f\)

\(bg \div b = \frac{27 - 9f}{b} \)

\(g= \frac{27 - 9f}{b} \)

Answer:

Julio is taller

Step-by-step explanation:

5 5/6 > 5 1/4

Answer:

Julio

Step-by-step explanation:

Julio is taller because when you compare the fractions 5/6 is above 1/2 and 1/4 is not.

Answer:

\(hey \: there \\ \\ 13 \: of \: 20 \times 100 \\ \\ so \: \frac{13}{20} \times 100 \\ \\ simplify \\ \\ \frac{13}{ \cancel{20}} \times \cancel{100} \: \: ^{5} \\ \\ = 13 \times 5 = 65 \ \: percent \)

Sean's test score as a percentage is 65%.

Percentages are a measure of count. They are used to represent the fraction of a quantity as a number out of 100. The sign used to represent percentages is %.

Test score in percentage = (number correctly spelled / total question) x 100

(13/20) x 100 = 65%

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Answer: CORRECT

Step-by-step explanation: Because any negative number will be positive when multiplied together but since there are 3 negative number the 3rd negative will always negate the positive so therefore Delila is correct

She is correct.

A odd number is 1 less or one greater than an even no. so when we multiply negative nos. odd no. of time we will have only one no. remaining to be multiplied and the rest of the nos. will be paired and we know a pair of negative nos. multiplied together is positive then multiplying it with one more negative no. will make the whole thing negative.

According to the given question

Delila is multiplying three negative numbers and determines that the solution will be negative.

When we multiply negative numbers odd number of times we get the result in negative and when we multiply negative numbers even number of times the obtained result is positive.

(-1)ⁿ( make all the given numbers positive)

Here n represents the number of times we have multiplied.

We know that 1 raised to the power anything is 1 it self so it doesn't effect the equation.

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x² - 3x - 10

x² = x * x

10 can be factored:

1 x 10 ⇒⇒⇒ difference between factors = 9

2 x 5   ⇒⇒⇒ difference between factors = 3  ⇒ (The correct pair)

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

                = x² + 2x - 5x - 10

                = x² - 3x - 10

x - 5 = 0  ⇒⇒⇒ x = 5

  x + 2 = 0  ⇒⇒⇒ x = -2

Answer:

Word problem 3        

Step-by-step explanation:

Word Problem one is a subtraction problem since Felicia is giving away two marbles to Lucas. Word Problem two is a division problem since Felicia is evenly dividing the number of marbles she has into two bags. Word Problem three is a multiplication problem because Ryan has two times as many marbles that Felicia does. Word Problem four is an addition problem because she found two more marbles while she already has eight marbles. Keywords for subtraction word problems are: fewer than, decrease, take away, less than, minus, difference, change, lost reduced, and subtract. Keywords for division word problems are: As much, cut up, groups, equally, sharing, half, how many in each, parts, per percent, quotient, ratio, and separated. Keywords for multiplication word problems are: double, every, factor, increased, multiplied product, times, and tripled.

Answer: 1/343

Step-by-step explanation:

To multiply fractions, combine the numerators and denominators and simplify as shown below.

1/7 x 1/7 x 1/7 can be rewritten as:

(1x1x1)/(7x7x7)

Simplifying the numerator and denominator in the new equation, the result is 1/343.

Thus, 1/7 x 1/7 x 1/7 = 1/343.

I hope this helps!

Answer:

21 sheets of paper

Step-by-step explanation:

If its basically 6 tickets to a piece of paper then you just divide 125 tickets by 6 and get 20.833.... Then your round to the nearest sheet which is 21.

Hope this helps!

Answer:

Approx. 21 sheets of paper

Step-by-step explanation:

1 sheet of paper is used to make 6 tickets

6 tickets = 1 sheet

If 1 sheet is used to make 6 tickets. The number of sheets used to make 125 tickets will more.

if

6 tickets = 1 sheet

125 tickets = (125÷6) × 1

= 20.83333333333