f(x)=-4x+7;f(1) Evaluate

Answer:

45

Step-by-step explanation:

When a problem has no solution you'll end up with a statement that's false. For example: 0=1 This is false because we know zero can't equal one. Therefore we can conclude that the problem has no solution.

Answer: A problem with no solution is a problem with no applicable answer or the answer is not a real number or x ∉ R

Answer:

D . what is the number sentence?

Answer:

answer is simple

Step-by-step explanation:

you just need to find out solutions by your self

The diameter of the balloon increasing when the diameter is 1.3 feet is

3/2π feet/minute.

A technique for determining a function's derivative is differentiation. Mathematicians use a procedure called differentiation to determine a function's instantaneous rate of change based on one of its variables. The most typical illustration is velocity, which is the rate at which a distance changes in relation to time. The derivative of a function of a real variable in mathematics assesses how sensitively the function's value changes in response to changes in its argument. Calculus's core tool is the derivative.

Given,

Volume of spherical balloon = 4/3πr²

Volume of spherical balloon = 4/3π(D/2)³

Volume of spherical balloon = 1/6πD³

Differentiation:

dV/dt = 1/2πD²dD/dt

dD/dt = 2/πD² × dV/dt

radius = 1

D = 2 feet

dV/dt =3 feet

dD/dt = 2/π2²(3)

dD/dt = 3/2π feet/minute

The diameter of the balloon increasing when the diameter is 1.3 feet is

3/2π feet/minute

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Answer:

t < \(\frac{38}{17}\)

Step-by-step explanation:

Given

12t - 2 < - 5t + 36 ( add 5t to both sides )

17t - 2 < 36 ( add 2 to both sides )

17t < 38 ( divide both sides by 17 )

t < \(\frac{38}{17}\)

Answer:

Step-by-step explanation:

12t - 2 < -5t + 36

17t < 38

t < 38/17

(a) With 10 rectangles using left endpoints, 5 rectangles are contributing negative area values to the estimated net area. This means that the function is below the x-axis in those intervals.

The remaining 5 rectangles are contributing positive area values, as the function is above the x-axis in those intervals.

When using midpoints, the number of positive and negative rectangles may not be the same. It depends on the behavior of the function within each subinterval. The use of midpoints can result in a different distribution of positive and negative rectangles compared to using left endpoints.

(b) The error when using midpoints with 10 subintervals can be determined by calculating the difference between the estimated net area using midpoints and the actual net area.

To calculate the error, we need to evaluate the definite integral of the function over the given interval and subtract the estimated net area using midpoints.

Error = Actual Net Area - Estimated Net Area using Midpoints

Since the exact values are not provided, the specific error value cannot be determined without further information or calculations.

Using left endpoints with 10 rectangles, 5 rectangles contribute negative area values and 5 contribute positive area values. When using midpoints, the distribution of positive and negative rectangles may differ. The error when using midpoints can be calculated by subtracting the estimated net area using midpoints from the actual net area, but the exact error value cannot be determined without further information or calculations.

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The evidence from the text suggests that the zombie trick helped the main character feel mentally prepared for the "Zombie 5K" event.

The main character initially expresses doubts about her ability to complete the race. She says, "I was worried that I wouldn't be able to finish the Zombie 5K. I wasn't very confident in my running abilities, and I was afraid I would get too scared by the zombies." This shows that she lacked confidence and had fears about the event.

However, after her friends played the zombie trick on her, the character's mindset changed. She says, "After the zombie trick, I felt more prepared to face the real zombies during the race. I knew it was just a trick, but it helped me overcome my fears and feel more confident." This suggests that the zombie trick had a positive impact on her mental preparation for the race.

Furthermore, the character's behavior during the race supports this idea. She describes how she used strategies to avoid the zombies and successfully completed the race. She says, "I made sure to stay aware of my surroundings and avoid the zombies as best as I could.

I kept reminding myself that they were just people in costumes, and that helped me stay focused on finishing the race." This shows that the character was mentally prepared for the race and able to perform well despite the challenges.

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Answer:

-1/√2  

Step-by-step explanation:

According to trigonometry identity

cos(A+B) = cosAcosB - sinA sinB

Given the expression

(cos92°)(cos133°)-(sin92°)(sin133°)

This can be expressed as cos(92+133) where A = 92, B = 133

(cos92°)(cos133°)-(sin92°)(sin133°)

= cos(92+133)

= cos225

= -0.7071

= -1/√2

Hence the exact value is  -1/√2  

A book store is hosting a special night in which families can enjoy a story and craft time. The ticket have been sold so far would be 75.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We have given that 45 children's tickets have been sold, being 60% of the total tickets having been sold.

So, we have to solve for x:

60% × x = 45

60/100 × x = 45

Multiplying both sides by 100 and dividing both sides by 60,

x = 45 × 100/60

x = 75

Thus, the ticket have been sold so far would be 75.

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Answer:

Step-by-step explanation:

56.1,12.1,23.6

if the null hypothesis is rejected in hypothesis testing the alternative hypothesis is true.

The relationship between important factors of interest and any apparent connection, according to a competing theory, is most certainly not accidental. The opposite of a null hypothesis is an alternative hypothesis. If we are able to rule out the null hypothesis, it signifies that we have enough data to support the alternative hypothesis. In one test, we cannot rule out both possibilities.

If one is disproven, it indicates that there is evidence to support the other. The opposing view is that a study's potential conclusion will materialize. It claims there is no coincidence in the relationship between important components of interest and the observed connection. As a result, the alternative hypothesis is true if the null hypothesis is disproved during hypothesis testing.

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In a triangle one side that lies on an extended line segment,  statement about x is true, x = 62 because 147−85=62 and 85 + 62 = 147. So Option B is correct

In mathematics, the triangle is a type of polygon which has three sides and three vertices. the sum of all the interior angles of the triangle is 180°

Given that,

A triangle, which has one interior angle 85° and one exterior angle 147°

Another exterior angle x = ?

It is already known that,

Sum of complementary angles are 180

So,

⇒  Y + 147 = 180

⇒  Y  = 180 - 147

⇒  Y = 33

sum of all the interior angles of the triangle is 180°

X + Y + 85 = 180

X = 180 - 85 - 33

X = 62

Hence, the value of x is 62

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the value of the double integral is 5/6.

We are given the double integral:

∫∫d (2xy) dA

where d = {(x, y) | 1 ≤ y ≤ 2, y − 1 ≤ x ≤ 1}

We can evaluate this integral by integrating over the given region d:

∫1^2 ∫y-1^1 2xy dxdy

Integrating with respect to x first, we have:

∫1^2 ∫y-1^1 2xy dx dy

= ∫1^2 [x^2y]y-1^1 dy

= ∫1^2 [2y - 2y^3] dy

= [y^2 - (1/2)y^4]1^2

= (4 - 8/3) - (1 - 1/2)

= 5/6

what is double integral?

A double integral is an integral with two variables, which is used to calculate the signed volume between a surface defined by a function f(x, y) and the xy-plane over a region in the xy-plane. The region is usually a rectangle, but it can be any two-dimensional shape.

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- - - - - - - - - - - - - - - - - - - - - - - - - - -

If 'he' wins 5 out of 13 games, that's an immediate ratio of 5:13.

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Let's call him Max :)

Okay, now for the math.

I'm going to try a number line- but first, we have to know how many times 13 goes into 78.

- - - - - - - - - - - - - - - - - - - - - - - - - - -

78 / 13 = 6

So now we multiply the ratio (5:13) by six...

30:78

That's the answer!

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Good luck!

~pinetree

Answer:

665

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)

Answer:

665

Step-by-step explanation:

350 - 30( - 14 + 3.5) ← evaluate the parenthesis

= 350 - 30( - 10.5) ← distribute parenthesis by - 30

= 350 + 315

= 665

The water output rate for Reed's sprinkler is 25L/hour. We have to find the water output rate for each sprinkler if the sum of the two rates was 45L per hour. We know that the Rogers family sprinkler was used for 15 hours and the Reed family sprinkler was used for 30 hours.

Therefore the combined time the two sprinklers were used for was:15 + 30 = 45 hours

Therefore, The Rogers family's sprinkler output rate: r₁

The Reed family's sprinkler output rate: r₂

Given that the sum of the two rates was 45L per hour: r₁ + r₂  = 45 -----Equation (1)

Now, let's calculate the water output of each sprinkler using their respective times:

Water output of Rogers' sprinkler = r₁ × 15

Water output of Reed's sprinkler = r₂  × 30

The total output was 1050L:

r₁ × 15 + r₂  × 30 = 1050 -----Equation (2)

We have two equations and two variables. We will solve for r₁ and r₂ :

r₁ + r₂ = 45r₂ = 45 - r₁

Substituting the value of r₂ in equation (2), we get:

r₁ × 15 + (45 - r₁) × 30 = 105015r₁ + 1350 - 30r₁

= 1050-15r₁

= -300r₁

= 20r₂

= 45 - r₁

= 45 - 20 = 25

Therefore, The water output rate for Rogers' sprinkler is 20L/hour.

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Answer:

RN=5

Step-by-step explanation:

QR is congruent to RN therefore they are the same length

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

\(6 = \frac{x + 2}{3} \\ \)

\( \frac{x + 2}{3} = 6 \\ \)

Multiply sides by 3

\(3 \times \frac{x + 2}{3} = 3 \times 6 \\ \)

\(x + 2 = 18\)

Subtract sides 2

\(x + 2 - 2 = 18 - 2\)

\(x = 16\)

Done...

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Answer:

Step-by-step explanation:

Given the expression g(c) = 6c/2, we are to find the value when c = 2

Substitute c = 2 into the expression

g(2) = 6(2)/2

g(2) = 12/2

g(2) = 6

Hence the result when c = 2 is 6

Answer:

Step-by-step explanation:

Since we have been given that

Ari has 3 ounces of caramel for each 5 scoops of frozen yogurt .

Freeze Zone makes bunches of milkshakes with 6 ounces of caramel and 8 scoops of frozen yogurt.

As per Ari,

For each 5 scoops of frozen yogurt, he wants 3 ounces of caramel

For each 1 scoop of frozen yogurt, he wants

3 ounces of Caramel

For each 8 scoops of frozen yogurt, he wants

3/5 * 8 = 24/5= 4.8 ounces

In this way, Ari considers sum caramel is something else for ideal milkshake as there is just requirement for 4.8 ounces of caramel however Freeze Zone is utilizing 6 ounces of caramel.

Answer:

Step-by-step explanation:

5456

The standard deviation is 7.35.

Standard deviation is used to determine how the values in a group differs from the mean of the values in the group

In order to determine the standard deviation, take the following steps:

Determine the mean of the observation: (87 + 91 + 74 + 73 + 80 + 84 + 68 + 75) / 8 =79

Determine the difference between each value and the mean and then square the result:

(87 - 79)² + ( 91 - 79) ² + (74 - 79)² + (73 - 79)² + (80 - 79)²  + (84- 79)²  + (68 - 79)²  +( 75- 79) ²

64 + 144 + 25 + 36 + 1 + 25 + 121 + 16 = 432

Determine the mean of the sum of the squared differences and then find the square root of the mean:

√432 / 8 = 7.35

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Answer:

i believe it would be z = -7.5

Step-by-step explanation:

Answer:

-7.5

Step-by-step explanation:

Subtract 2.7z from 3.5z

0.8z= -6

divide each term by 0.8 -    0.8 divided by 0.8-         -6 divided by 0.8

Cancel the common factor of 0.8

divide -6 by 0.8

Z= -7.5

The answer is 67¢

I hope this helped

-0229

Answer:

67¢

Step-by-step explanation:

I hope this helps!

Answer:

3.68

Step-by-step explanation:

Make 16% a decimal then multiply by 23

.16*23=3.68

Answer:

48ft

Step-by-step explanation:

Answer:

it will be 1974

Step-by-step explanation:

2100*6/100

=126

Answer:

1997.08 pounds at the beginning of 6 years.

Step-by-step explanation:

If you start at 2100 pounds, and it depreciates by .01 every year, you would start by doing this. It wouldn't just be subtracting 21 each year because the value depreciates and 1% would come off the new depreciated value each year.

1st year - 2100*.01 = 21  

2100-21 = 2079

2nd year - 2079*.01 = 20.79

2079 - 20.79 = 2058.21

3rd year - 2058.21*.01 = 20.58

2058.21-20.58 = 2037.63

4th year - 2037.63*.01 = 20.38

2037.63-20.38 = 2017.25

5th year - 2017.25*.01 = 20.17

2017.25 - 20.17 = 1997.08

6th year - at the beginning of the 6th year, it would be worth 1997.08.

At the end of the 6th year, it would be: 1997.08*.01 = 19.97.  1997.08-19.97 = 1977.11

Recall that for a, b, and c to be the lengths of a triangle they must satisfy the following inequalities:

Therefore, if we call the other side x, it must satisfy that:

Solving each inequality for x, we get:

Therefore, x must be greater than 3 inches but less than 15 inches.

Answer: The possible lengths of the third side must be greater than 3 inches but less than 15 inches

Based on the given information, Carl's car wash takes a constant time of 4.5 minutes in its automated car wash cycle. Autos arrive following a Poisson distribution at the rate of 10 per hour. Using this information, Carl can calculate the expected time it would take to wash a car.

The first step is to calculate the average time between car arrivals, which is equal to 60 minutes divided by the arrival rate of 10 cars per hour, giving an average time of 6 minutes per car. Since the wash cycle time is constant at 4.5 minutes, Carl can add these two values together to get an expected wash time of 10.5 minutes per car.

However, it's important to note that this is just an expected time, and there may be variations due to factors such as queue length, equipment malfunctions, or other unforeseen circumstances. Therefore, Carl should regularly monitor his car wash operation and make adjustments as necessary to ensure efficient and consistent service.

In summary, Carl's car wash takes a constant time of 4.5 minutes in its automated car wash cycle, and with autos arriving at a rate of 10 per hour, the expected time it would take to wash a car is 10.5 minutes.

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Answer:

D) Y=X-9

Step-by-step explanation:

For x=1

Y=1-9=-8

For x=8

Y=8-9=-1

...and so on for each value of x.