The average speed of a plane is 560 kilometers per hour. How long does it take the plane to travel 140 kilometers?

Answers

Answer 1
Answer: (140 km) x (1 hour / 560 km) = 0.25 hour = 15 minutes
Answer 2
Answer: 560kph*x=140kilometers so x=.25 so .25*60 minutes is 15 minutes

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Please help asap its due in one minuteLarry’s Landscaping charges $235 for spring cleanups and $30 for weekly lawn maintenance. Joe’s Landscaping charges $185 for spring cleanups and $35 for weekly lawn maintenance. The system that models this situation is given, where c is the cost of lawn maintenance and w is the number of weeks. c = 235 + 30wc = 185 + 35w The solution to the system is (10, 535).Which interpretation correctly describes the solution to the system of equations?a. Larry’s Landscaping will charge more money on the tenth week by charging $535.b. Joe’s Landscaping will charge more money on the tenth week by charging $535.c. The cost for lawn maintenance is the same, $535, for both landscaping companies after 10 wk.d. A customer can have his or her lawn maintained for a maximum of 10 wk. The customer will pay a total of $535.
Which quadratic equation defines the function that has zeros at -8 and 6?
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a line passes through the origin and has a slope of –3. what is the equation of the line that is perpendicular to the first line and passes through the point (3, 4)?
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What is B=T-Lc for T

Answers

B=T-Lc \n \n \boxed{T=B+Lc}
Just add Lc to both sides

T = B + Lc

Find the sum of the geometric sequence 4, 16, 64, 256, 1024

Answers

The formula for sum of a GP is 
S_n= (a_1(1-r^n))/(1-r)
Where S_n is the sum of 'n' terms, a_1 is the first term, 'r' is the common ratio
The common ratio is 16 divided by 4, that's 4

S_(5)= (4(1-4^5))/(1-4)
S_(5)= 1364

Answer:

4

Step-by-step explanation:

The pattern is that each number is multiplied by 4 so the answer is 4. Oh this was 3 years ago.... raspberries!!

in two complementary angles, the measure of one angle is 6 more than twice the measure of the other. the measures of these two angles are

Answers

12 is twice the measure of 6

PLEASE HELP ASAP 15 BRAINLY POINTS1) (multiple answers pick two) Does the equation represent a direct variation? If so, identify the constant of variation.
17y = 85x

A) Yes
B) No
C) 5
D) 1/5


2) Determine whether the relationship is a direct variation.
X : 3, -1 , -4
Y : -6, 2, 8

A) yes
B) No


3) Is the relationship shown a direct variation? (it's not absolute value is a table chart)
| X  | Y |
| -2 | 5  |
| 1  | 3  |
| 4  | 1  |

A) yes
B) No


4) Determine whether the relationship is a direct variation.
------------------------------
| X |   6    |   9    |   17  |
-------------------------------
| Y | 13.2 | 19.8 | 37.4 |
-------------------------------

A) yes
B) no

5) Determine which equation does NOT represent a direct variation.

A) 6x - y = 0
B) y = 4x + 1
C) y = -2x
D) y = 1/3x


6) (multiple answer pick 2) Tell whether the equation represents a direct variation. If so identify the constant of variation. y + 3x = 0

A) Yes
B) No
C) -3
D) 1/3
E) 3

Answers

1.) The answer is (B) No, because direct variation is written as y = kx, but the problem was not written that way.

2.) Answer: Yes; if you write x = ky, you will find that each x value given multiplied by a common k equals a corresponding y value.

3.) Answer: No; each x value does not multiply by a constant k to get the y values.

4.) Answer: Yes; each x value multiplies by 2.2 to get each corresponding y value.

5.) Answer: B; this is the only one that isn't or can't be written in y = kx form.

6.) Answer: Yes & -3; y + 3x = 0 can be written as y = -3x, which is a direct variation equation. The constant is just the -3.

1) b

2) no

3) c

4) a

1. Which of the following coordinates for p will make line mn perpendicular to line op in the diagram below?a. (-2,-5)
b. (-3,6)
c. (3,2)
d. (3,5)

2. Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7?

a. y = 5x + 53
b. y = -1/5x - 7
c. y = -1/5x + 1
d. y = 1/5x + 5

Answers

1. (3,2)....because when finding the slope, we find the the slope of mn and the slope of op are negative reciprocals.

2. y = 5x - 7.....slope here is 5....perpendicular line has a negative reciprocal slope...so the slope has to be -1/5

y= mx + b
slope(m) = -1/5
(-10,3)...x = -10 and y = 3
now we sub and find b, the y int
3 = -1/5(-10) + b
3 = 2 + b
3 - 2= b
1 = b
so ur perpendicular equation is : y = -1/5x + 1

If Ying Zyiyu covers the first 200 miles of a trip going at 50 mph and the last hundred going 40 mph, what was his average speed for the entire trip?

Answers

the person covers different distances at different speeds

to find the average speed we have to find the total distance travelled and the total time taken

average speed = total distance travelled / total time taken


first 200 miles

speed - 50 mph

time taken for 50 miles - 1 hour

then time for 200 miles - 1/50 x 200 = 4 hours


last 100 miles

speed - 40 mph

time taken for 40 miles - 1 hour

time for 100 miles - 1/40 x 100 = 2.5 hours


total time taken for a distance of 300 miles - 2.5 + 4 = 6.5 hours


average speed = 300 miles / 6.5 hours = 46.2 mph

average speed is 46.2 mph