I really need help on this!!

Answer: 40 mph

Step-by-step explanation: let s = speed in traffic

(s+17) = out of traffic

:

Write a time equation; time = dist/speed

traffic time + normal speed time = 4 hrs

46%2Fs + 80%2F%28%28s%2B17%29%29 = 4

multiply by s(s+17) to cancel the denominators

46(s+17) + 80s = 4s(s+17)

46s + 782 + 80s = 4s^2 + 68s

126s + 782 = 4s^2 + 68s

Arrange as a quadratic equation on the right

2s^2 - 29s - 391 = 0

Use the quadratic formula a=2; b=-29; c=-391

I got a positive solution of

s = 23 mph in traffic

:

:

:

Check this by finding the actual times. Normal speed: 23 + 17 = 40 mph

46/23 = 2 hrs in traffic

80/40 = 2 hrs at normal speed

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

total time 4 hrs

0 = 4s^2 + 68s - 126s - 782

4s^2 - 58s - 782 = 0

simplify, divide by 2

so  the answer is 40mph

Answer:

SAS

Step-by-step explanation:

As shown, you are given two measures of sides and since the intersecting lines(triangles) create vertical angles, then they are congruent.

Answer:

SAS

Step-by-step explanation:

there are two congruent sides given on the triangles and that shows us that the vertex of both triangle where they meet is congruent... so its side-angle-side

Answer:

This question has been solved in the attachment I added to the answer. Please try to follow the calculations. If you have any questions you can drop it on the comment section.

a. How long do you expect the key operation to take?

The operation would take 10 minutes

b. What is the probability the key operation will take less than 24 hours

= 0.909285 or 0.909

c. What is the probability the key operation will take at least 5 hours?

= 0.606

d. What is the probability the key operation will take at least an additional 5 hours given the construction works have already worked for 10 hours?

0.6065

e. What do you notice about your answers to part c and part d?

Part c an d have the same values.

Answer:

The answer would be A)

Step-by-step explanation:

Answer: The sum of rational and irrational number is always irrational...

Answer:

When both rational and irrational numbers are written in decimal form, rational numbers can be written as finite decimals and infinite recurring decimals, such as 4=4.0, 4/5=0.8, 1/3=0.33333... and irrational numbers can only be written as infinite non-recurring decimals, such as √ 2=1.414213562…………According to this point, people define irrational numbers as infinite non-recurring decimals. 2. All rational numbers can be written as the ratio of two integers; irrational numbers cannot.

(Rational number): A number that can be accurately expressed as the ratio of two integers. 　　 Such as 3, -98.11, 5.72727272..., 7/22 are all rational numbers. 　　 Integers and fractions are all rational numbers. Rational numbers can also be divided into positive rational numbers, 0 and negative rational numbers. 　　 Irrational numbers refer to infinite and non-recurring decimals such as: π 　　·The difference between irrational and rational numbers: 　　 1. When both rational and irrational numbers are written in decimal form, rational numbers can be written as finite decimals and infinite cyclic decimals. 　　 For example, 4=4.0, 4/5=0.8, 1/3=0.33333... and irrational numbers can only be written as infinite and non-cyclic decimals. 　　 For example, √2=1.414213562…………According to this point, people define irrational numbers as infinite and non-cyclic decimals. 　　2, all rational numbers can be written as the ratio of two integers; irrational numbers cannot. Based on this, some people suggested that irrational numbers should be removed from the "irrational" hat, and rational numbers should be called "comparative numbers" and irrational numbers should be called "irrational numbers". Originally, irrational numbers are not unreasonable, but people don't know much about it at first. 　　Using the main difference between rational and irrational numbers, we can prove that √2 is irrational. 　　Proof: Assume that √2 is not an irrational number, but a rational number.Since √2 is a rational number, it must be written as the ratio of two integers: √2 = p / q Since p and q do not have a common factor to be reduced, p / q can be considered to be the reduced fraction, the simplest form of fraction. Put √2 = p / q squared on both sides Get 2 = (p ^ 2)/(q ^ 2) Is 2 (q ^ 2) = p ^ 2 Since 2q ^ 2 is an even number, p must be an even number, so set p = 2m From 2 (q ^ 2) = 4 (m ^ 2) Get q ^ 2 = 2m ^ 2 Similarly, q must be an even number, let q = 2n Since p and q are both even numbers, they must have a common factor of 2, which contradicts the previous assumption that p/q is a reduced fraction. This contradiction is caused by the assumption that √2 is a rational number. Therefore √2 is an irrational number.

.

Answer:

  A, B, C

Step-by-step explanation:

The variables in a polynomial term are non-negative integers.

  A: x is to 1/2 power (square root) . . . not a polynomial

  B: x is to -2 power . . . not a polynomial

  C: x is to -2 power . . . not a polynomial

  D: x is to powers of 2 and 1 . . . is a polynomial

The choices A, B, and C are not polynomials

Answer:

The Answer is B

Step-by-step explanation:

Trust me i did it

Answer:

B ANSWER IS B

Step-by-step explanation:

Answer:

A. and E.

Step-by-step explanation:

9(2x + 3)

9 times 2x = 18x  9 times 3 = 27

18x + 27

3(6x+9)

3 times 6x = 18x  3 times 9 = 27

18x + 27

Hope this helps dude ! ^-^

Answer:

28.08

Step-by-step explanation:

4(3+5)−3.92

Add 3 and 5 to get 8

4×8−3.92≈28.08

Multiply 4 and 8 to get 32

32−3.92≈28.08

Subtract 3.92 from 32 to get 28.08

28.08

Answer:

462

Step-by-step explanation:

15 x 11 + 33 x 9 = 462

100% sure gimme brainliest please thanks

Answer:

Its 462

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

1) Upon studying the grid, we see that A is at the intersection of the x- and y-axes, and that all of the other points are in the first quadrant. The distance between minor grid lines in either direction is taken to be 1 unit. That is, B is 1 unit right and 1 unit up from A(0, 0), so has coordinates B(1, 1).

The coordinates of C and D can be found by counting grid lines. We find them to be C(5, 1) and D(8, 7).

__

2) The line joining A and B is a line whose points have their x-coordinate equal to their y-coordinate. The coordinates of D are not equal, so will not be on that line.

Answer:

20%

Step-by-step explanation:

6100/305 is 20

Im doing the same question and the answer is 5%

Answer:

6

Step-by-step explanation:

6 to the -3 power then to 6 to the 5th.

Getting 5.95374181e-7, simplfied made into a 6. Or a 5.9, most likely 6.

the answer is line h

Answer:

h <3

Step-by-step explanation:

Answer:

The complete question seems to be:

A doctor sees between 7 and 12 patients each day.

On Mondays and Tuesdays, the appointment times are 15 minutes.

On Wednesdays and Thursdays, they are 30 minutes.

On Fridays, they are one hour long.

The doctor works for no more than 8 hours a day.

Here are some inequalities that represent this situation.

0.25 ≤ y ≤ 1

7 ≤ x ≤ 12

xy ≤ 8

What represents each variable?

7 ≤ x ≤ 12

We know that the doctor sees between 7 and 12 patients each day, and the smallest value of x is 7, and the largest is 12, then x must represent the number of patients that the doctors see in a given day.

0.25 ≤ y ≤ 1

now,

On Mondays and Tuesdays, each appointment is 15 minutes long.

An hour has 60 minutes.

Then 15 minutes = 15/60 hours = 0.25 hours.

On Wednesdays and Thursdays, they are 30 minutes.

30 minutes = 30/60 hours = 0.5 hours.

Then the possible value of the time for each appointment are {0.25, 0.5, 1}

Then the variable y must represent the time that each appointment takes.

xy ≤ 8

We know that:

x =  number of patients in a given day.

y = time that the appointment takes in a given day.

x*y = total number of hours that he works in that given day.

and we know that he works, at maximum, 8 hours.

then the inequality xy ≤ 8 has sense.

Answer:

So what's the question ur trying to ask?

Answer:

Yes

Step-by-step explanation:

Each Input has a different output making it a function

Answer:

thats easy j

Step-by-step explanation:

Answer:

1st aircraft has 353 seats

2nd aircraft has 343 seats

Step-by-step explanation:

401 minus 48 equals 353 (1st aircraft)

401 minus 58 equals 343 (2nd aircraft)

Answer:

for the line to have a constant slope, the difference of every y- ordinate with the last ordinate has to be equal

to check this, we will use the following formula

y4 - y3 = y2 - y1  

if both the LHS and the RHS are equal, the slope is constant and is irregular otherwise

5 - 8 = 7 - 3

-3 = 4

LHS ≠ RHS

Since LHS is not equal to RHS, the slope is NOT constant and hence keeps increasing or decreasing irregularly

Therefore, option 4 (Not a line) is correct

Answer:

it is not a constant line

Step-by-step explanation:

each x value increases by 1, but the y values are all over the place and are in no order.

Answer:

35

Step-by-step explanation:

The area of given figure is, 35 meter².

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

We have to given that;

The figure is shown in figure.

Now, We know that;

⇒ Area of rectangle = Length × Width

So, The area of figure is,

⇒ 9 × 3 + (7 - 3) × 2

⇒ 27 + 4 × 2

⇒ 27 + 8

⇒ 35 meter²

Learn more about the rectangle visit:

https://brainly.com/question/2607596

#SPJ2

Answer:

-5x+6

Step-by-step explanation:

Combine like terms:

-x + 5x - 9x = -5x

8 - 2 = 6

Answer: - 5x+6 plz name me brainliest. I got it right on my test

Step-by-step explanation:

-x + 5x - 9x = -5x

8 - 2 = 6

Answer:

I belive the number you are searching for is 35.

Step-by-step explanation:

Simply divide 142.20 by 6 to get the hourly wage(23.70). Divide 829.50 by the hourly wage to get the answer. (35)

Answer:

$9.68

Step-by-step explanation:

The total cost before tax is $75.50 + $12.50 = $88

11% of $88 = 0.11 * $88 = $9.68

Answer: $9.68

Answer:

Step-by-step explanation:

$75.50 (bike) + $12.50 (helmet) = $88 (this is the amount shawn will pay before tax

next $88 (total before tax) multiplied by 0.11 (11% tax) to get $9.68 tax. that should be the answer

edit: answer was wrong before, im really sorry if you already submitted the answer and i got it wrong for you.

Answer:

I think its 27.

Step-by-step explanation:

If they were 6 and her sister was half her age her sister would be 3. That means her sister is 3 years younger than they are. So if they are 30 all you do is 30 - 3 and you get your answer 27.

Hope this helps!