please help me with this math.​

Hey did you find the answer to it yet ? Because I’m having a hard time as well

The result of the unknown variable x is equivalent to 7

Linear equations are equation that has a leading degree of 1. Given the expression below:

5(3x − 15) + 16 = 5x + 11

Expand the expression

5(3x) - 5(15) + 16 = 5x + 11

15x - 75 + 16 = 5x + 11

15x - 5x - 59 - 11 = 0

10x - 70 = 0

10x = 70

Divide both sides by 10

10x/10 = 70/10

x = 7

Hence the value of x makes the equation true is 7

Learn more on linear equation here: https://brainly.com/question/2030026

#SPJ1

Answer:

The linear equation satisfying the given condition is,

\(x=t+15\)

where x is Ravi's age and t is the number of years

(after 10 years (t=10) his age becomes 25)

Step-by-step explanation:

Let x be Ravi's age

Now, his  current age is unknown, but if you add 10 to it, then it becomes 25, so

x + 10 =25

so, his current age is x = 25 =10

x = 15

Now, we find the linear equation satisfying the given condition,

Let t be the number of years that have passed since the present time

so, if 0 years have passed, his age will be 15 years

after 1 year, his age will be 16 years

after 10 years, his age will be 25 years and so on

so

\(x = t + 15\)

this satisfies the given condition, since if we add ten years i.e t = 10,

then we get 25

The equation is:

Work/explanation:

Here's the linear equation for Ravi's age.

Ravi's age is x.

If you add 10 to x you get x + 10.

That gives 25.

So the linear equation is x + 10 = 25.

Answer:

12.56 cents

14.08 cent

Step-by-step explanation:

The unit price for each of the following items could be obtained thus :

The unit price = price of one item

Therefore, given that x numbers of a certain item cost y ;

The unit price will be : y / x

frozen orange juice

16.0 oz at $2.01

12 oz at $1.69

If 16 oz cost $2.01

1 oz = $2.01 / 16 = $0.125625 * 100 = 12.56 cents

If 12 oz = $1.69

1 oz = $1.69 / 12 = $0.1408333 * 100 = 14.08 cent

Answer:

d. x = 7

Step-by-step explanation:

\(\frac{32}{8} = \frac{28}{x}\)

Cross multiply, the denominator "8" is multiplied by numerator "28", while the numerator "32" is multiplied by denominator "x":

8 * 28 = 224

32 * x = 32x

\(32x = 224\)

Divide both sides by 32:

\(\frac{32}{32} = \frac{224}{32}\)

[x = 7]

Answer:

maya is able to make 47 bracelets

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

f(4) means to use 4 in place of x.

f(x) = 3(5)^(x-2)

fill in 4 for

f(4) = 3(5)^(4-2)

do the 4-2 subtraction first

f(4) = 3(5)^2

do the 5 to the 2nd power next.

f(4) = 3(25)

last, multiply.

f(4) = 75

This is just following the typical order of operations.

Answer:

$28 per hour

Step-by-step explanation:

Let's first find out how much extra Victoria was paid during the week she worked overtime.

Without overtime, Victoria's weekly paycheck would be $550. However, she received $690 that week. The difference between the two amounts is the extra pay for overtime:

Extra pay = Total pay - Regular pay = $690 - $550 = $140

Now, we know that Victoria worked 5 hours of overtime. To find her overtime pay per hour, we can divide the total overtime pay by the number of overtime hours:

Overtime pay per hour = Total overtime pay / Overtime hours = $140 / 5 = $28

Victoria's overtime pay is $28 per hour.

Hope this helps!

Answer:

Victoria is paid $28 per hour of overtime.

Step-by-step explanation:

Get the difference of Victoria's paycheck with and without overtime.

Difference = $690 - $550

Difference = $140

The difference is the amount that she was paid for the overtime.

Since she worked for 5 hours then we can just divide the amount over the time.

Rate = $140/5hours

Rate = $28/hr

For finding the inverse of a function you have to write it as an ecuation.

\(y = 4x + 7\)

Invert the values of x and y.

\(x = 4y + 7\)

Our objetive now in this new equation is to clear y. First, subtract 7 in both sides of the equation.

\(x - 7 = 4y\)

Then, divide both sides by 4.

\( \frac{x - 7}{4} = y\)

Finally, invert the values of x and y again and put the equation like a function.

\( {f}^{ - 1} (x) = \frac{x - 7}{4} \)

This is correct because f(x) = x is the axis of symmetry for both functions (green one).

The maximum area of a Norman window with a perimeter of 9 feet is 81π/4 square feet.

To find the maximum area of a Norman window with a given perimeter, we can use calculus. Let's denote the radius of the semicircle as r and the height of the rectangular window as h.The perimeter of the Norman window consists of the circumference of the semicircle and the sum of all four sides of the rectangular window. Therefore, we have the equation:

πr + 2h = 9We also know that the area of the Norman window is the sum of the area of the semicircle and the area of the rectangle, given by:

A = (πr^2)/2 + rh

To find the maximum area, we need to express the area function A in terms of a single variable. We can do this by substituting r from the perimeter equation:

r = (9 - 2h)/(π)

Now we can rewrite the area function in terms of h only:

A = (π/2) * ((9 - 2h)/(π))^2 + h * (9 - 2h)/(π)

Simplifying this equation, we get:

A = (1/2)(9h - h^2/π)

To find the maximum area, we differentiate the area function with respect to h, set it equal to zero, and solve for h:

dA/dh = 9/2 - h/π = 0

Solving this equation, we find:h = 9π/2

Substituting this value of h back into the area function, we get:

A = (1/2)(9 * 9π/2 - (9π/2)^2/π) = (81π/2 - 81π/4) = 81π/4

Therefore, the maximum area of a Norman window with a perimeter of 9 feet is 81π/4 square feet.

Learn more about area here:

https://brainly.com/question/2607596

#SPJ8

Answer:

it correct because i took this before

The angle measure of the sector of a circle graph that represents each color of bead is obtained with the following procedure:

In total, a circle graph has an angle measure of 360º, and each possible color is attributed a region of this circle graph.

The region is measured in degrees, and is dependent on the proportion assumed by each color.

The proportion assumed by each color is obtained dividing the number of beads with the color by the total number of beads.

For example, if 20 beads out of 100 are blue, the proportion is given as follows:

20/100 = 0.2.

Then the angle measure is obtained multiplying the proportion by 360º, as 360º represents the entirety of the circle graph.

Hence, for the blue beads, the hypothetical angle measure is given as follows:

0.2 x 360º = 72º.

The problem is incomplete, hence the answer was given in general terms.

More can be learned about proportions at https://brainly.com/question/24372153

#SPJ1

Answer: i got 10

Step-by-step explanation:

what ud o is 2x+12 let me see

Answer:

\(\huge\boxed{\sf r = 5}\)

Step-by-step explanation:

Given that,

7q + 35 = 7q + 7r

7q - 7q + 35 = 7q - 7q + 7r

35 = 7r

35/7 = r

5 = r

OR

\(\rule[225]{225}{2}\)

Answer:

r = 5

Step-by-step explanation:

Given statement,

→ 7(q + 5) is equivalent to (q + r)7.

Forming the equation,

→ 7(q + 5) = 7(q + r)

Now we have to,

→ Find the required value of r.

Then the value of r will be,

→ 7(q + 5) = 7(q + r)

Applying Distributive property:

→ 7(q) + 7(5) = 7(q) + 7(r)

→ 7q + 35 = 7q + 7r

Cancelling 7q from both sides:

→ 35 = 7r

→ 7r = 35

Dividing the RHS with number 7:

→ r = 35/7

→ [ r = 5 ]

Therefore, the value of r is 5.

Answer:

0.68

Step-by-step explanation:

0.69-0.1=0.68

Answer:

0.59 g

Step-by-step explanation:

0.69 g - 0.1 g = 0.59 g

Remember that 0.1 is the same as 0.10

69 hundredths minus 10 hundredths equals 59 hundredths

P.S.

If she had used 0.01 g, then she'd have 0.58 g left, but this is not our question.

Answer:

4536.459792... ft^2 or 1444pi ft^2

Step-by-step explanation:

Surface area of a sphere

A = 4 x pi x r^2

Since we have the diameter we can divide that by two to get the radius

38/2 = 19

Then we plug the digits we have into the equation

A = 4 x pi x 19^2

A = 4536.459792... or 1444pi

Answer:

n = 8

Step-by-step explanation:

hope this helps

The percentage of the sample selected at random that would be expected to be afflicted by stress would also be = 80%

The percentage of a data set is when part of the data is represented per 100 with a symbol of %.

It was stated in the question that 80% of Americans report being afflicted by stress.

Therefore when a sample is randomly selected from an American population, the percentage that is expected to be afflicted by stress should also be 80%.

Learn more about percentage here:

https://brainly.com/question/24339661

#SPJ1

Answer:

p=(800)(3/5)^t

Step-by-step explanation:

Answer: 800 - (3/5xt)

Step-by-step explanation:

800 is the base value and you have to multiply 3/5 by t

Answer:

Step-by-step explanation:

She wins if the numbers 5 or 6 come up. There are 4 other numbers that are equally likely to be face up.

Most of the time she will lose because two out of 6 is much smaller than 4/6. If you were betting on horses, the odds are 1 in 2. That means that who ever you are playing against should put up 2 dollars for every dollar you put up.

That would be a fair game.

Answer:

the correct t answer is d

Answer:

a. 482

b. 9.0

Step-by-step explanation:

The speed of the plane in still air is approx 482 miles per hour(mph). The speed of the jet stream, rounded to the nearest whole number, is 9 mph

Flight speed in air stream = Flight speed in still air + effect of air stream

If the flight is going opposit, then:

If the flight is going along with flight, then:

For this case, we're specified that:

Speed of flight along the stream is:

\(S = \dfrac{\delta D}{\delta T} = \dfrac{3930}{8} = 491.25 \: \rm mph\)

Speed of flight against the stream is:

\(S = \dfrac{\delta D}{\delta T} = \dfrac{3930}{8.3} \approx 473.49 \: \rm mph\)

Let the speed of air stream be y, and that of the flight in still air be x miles per hour, then we get:

Along air stream:

\(x + y =491.25\\\) (in miles per hour)

and Against the stream:

\(x - y =473.49\\\) (in miles per hour)

Adding both the equations side by side, we get:

\(2x + y - y = 491.25 + 473.49\\\\x = \dfrac{964.74}{2} =482.37 \: \rm mph\)

Using this value, we get the value of y as:

\(x + y =491.25\\y = 491.25 - x = 491.25 - 482.37 = 8.88 \: \rm mph\)

Rounding to the nearest whole numbers, we get:

x = 482 mph, and y = 9 mph

Thus, the speed of the plane in still air is approx 482 miles per hour(mph). The speed of the jet stream, rounded to the nearest whole number, is 9 mph

Learn more about motion in stream here:

https://brainly.com/question/14297576

Answer:

x = 47

Step-by-step explanation:

x + 121 = 4x - 20

-3x + 121 = - 20

-3x = -141

x = 47

So, the answer is x = 47

-20 ÷ -5 has the greatest quotient.

Option A expression has the greatest quotient.

An expression or algebraic expression is any mathematical statement which consists of numbers, variables and an arithmetic operation between them.

A.-20 divided by -5

= -20 ÷ -5

= 4

B.8 divided by -4

= 8 ÷ -4

= -2

C.-6 divided by -3

= -6 ÷ -3

= 2

D.12 divided by -3

= 12 ÷ -3

= -4

4 > 2 > -2 > -4

Hence, -20 ÷ -5 has the greatest quotient.

Option A expression has the greatest quotient.

Find out more information about expression here

brainly.com/question/19131200

#SPJ2

Answer:

the first one

Step-by-step explanation:

i had that question

Answer:

The lowest score eligible for an award is 92.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \(\mu\) and standard deviation \(\sigma\), the zscore of a measure X is given by:

\(Z = \frac{X - \mu}{\sigma}\)

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

\(\mu = 82.2, \sigma = 5\)

If the top 2.5% of test scores receive merit awards, what is the lowest score eligible for an award

The lowest score is the 100 - 2.5 = 97.5th percentile, which is X when Z has a pvalue of 0.975. So X when Z = 1.96. Then

\(Z = \frac{X - \mu}{\sigma}\)

\(1.96 = \frac{X - 82.2}{5}\)

\(X - 82.2 = 5*1.96\)

\(X = 92\)

The lowest score eligible for an award is 92.

We need to find Ο for : sin(Ο)= cos(6)

We know that:

cos θ =sin (90 - θ), so if we call θ = 6 then O will be:

O = 90 - θ

O = 90 - 6

The value of 0 is 84.

Given that,

Based on the above information, the calculation is as follows:

cos θ =sin (90 - θ),

So in the case when θ = 6

So, O will be

O = 90 - θ

O = 90 - 6

O = 84

Learn more: brainly.com/question/17429689

Answer:

3.2

Step-by-step explanation:

3.2 is correct