All categories

3 years ago

7. Diana took 2 hours to cycle from town X to town Y. Her average speed was 10 kilometers per

Mathematics

1 answer:

motikmotik3 years ago

7 0

Answer:

a.) 20 kilometers

b.)1.67 hours

Step-by-step explanation:

a.) formula= speed =distance/time

Speed= 10km/hr

Distance=unknown

Time=2hrs

Therefore from formula, distance=speed x time

10 x 2

20 kilometers

b.) If average speed is increased by 2km/hr then

total speed= 2+10=12km/hr

Distance remains constant therefore distance= 20km

Therefore time =distance/speed

20/12

= 1.67 hours

You might be interested in

Round 713,486 to the nearest ten thousand

aleksley [76]

710,000 the thousands column is less than 5 therefore the answer is 710,000

5 0

3 years ago

What is the value of the expression below?

Lady_Fox [76]

Answer:

0+0+c=0

Step-by-step explanation:

6 0

3 years ago

Determine the x-intercept and y-intercept of the following linear equations

Blizzard [7]

Answer:

Step-by-step explanation:

the x intercept takes coordinate (x,0)

the y intercept takes coordinate (0,y)

x intercept y intercept

40: x+y=5 (5,0) (0,5)

x=0 , y=5, when y=0 x=5

41: x-y=5 (5,0) (0,-5)

x=0, -y=5 then y=-5, when y=0, x=5

42: 3x+4y=12 (4,0) (0,3)

x=0, 4y=12⇒y=12/4⇒y=3

y=0, 3x=12⇒x=12/3⇒x=4

43: 2x+3y=6 (3,0) (0,2)

x=0 , 3y=6⇒y=6/3=2

y=0 ,3y=6 ⇒ y=6/3 ⇒y=2

44: 3x+4y=-24 (-8,0) (0,-6)

x=0 , 4y=-24⇒y=-24/4 ⇒ y=-6

y=0 , 3x=-24⇒ x=-24/3⇒x=-8

45: 1/3x+2/3y=5/6 (5/2,0) (0,5/4)

x=0 , 2/3 y=5/6 ⇒12y=15 ⇒ y=15/12 ⇒y=5/4

y=0 , 1/3 x=5/6 ⇒6x=15 ⇒x=15/6 ⇒x=5/2

46: x=-2 (-2,0) no y intercept

it is vertical line , there is no y intercept

47: y=15 no x intercept (0,15)

horixzontal line, no x intercept

48: 3x-7y=8 (8/3,0) (0,-8/7)

x=0 , -7y=8 ⇒y=-8/7

y=0 , 3x=8 ⇒x=8/3

7 0

3 years ago

A car company said that its top five models had the following fuel efficiency ratings: 26.3 mpg, 28.95 mpg, 33.6 mpg, 35 mpg, 38

MissTica

32.148 is the exact average.

6 0

2 years ago

3. The shaded part of the model shows what part of a

Tcecarenko [31]

Answer:

$\dfrac{1}{6}$

Step-by-step explanation:

From the diagram, the model is divided into 6 equal parts.

The shaded part of the model shows what part of the garden is planted with peas.

Since, 1 part out of 6 is shaded.

The fraction which names the shaded part is therefore: $\dfrac{1}{6}$

One-Sixth of the garden is planted with peas.

7 0

2 years ago