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2 years ago

Change 22 metres per second to a speed in kilometres per hour. Show your working clearly.

Mathematics

1 answer:

masha68 [24]2 years ago

7 0

Answer:

79.2 km/hour

Step-by-step explanation:

1 m/sec= 3.6 km/hour 22m/sec= ? so just multiply 22 m/sec by 3.6 km/hour then the answer will be :- 79.2 km/hour

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Identify the value of x.

bija089 [108]

Answer:

x=12.5

Step-by-step explanation:

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2 years ago

What type of number is 50?

Vladimir [108]

Fifty is an even number

8 0

3 years ago

Complete 6,7 for 5-8 points.

neonofarm [45]

Answer:

Step-by-step explanation:

6)Let the number be x

Product of a number and -4 = x * -4 = -4x

Product of a number and -4 increase by 3 : -4x + 3

-4x +3 = 9

Subtract 3 from both sides

-4x + 3 - 3 = 9 - 3

-4x = 6

Divide both sides by (-4)

-4x/-4 = 6/-4

x = -3/2

x = -1 1/2

7)Let the number be x

$\frac{x}{6}-9=11\\\\$

Add 9 to both sides

$\frac{x}{6}-9+9=11+9\\\\\frac{x}{6}=20\\$

Multiply both sides with 6

$\frac{x}{6}*6=20*6\\\\$

x = 120

7 0

3 years ago

Read 2 more answers

sue plays on a soccer team. On a particular Saturday, she scored eight goals. This was one fourth of the goals she scored during

hichkok12 [17]

8goals(4) = 32 goals

8 0

3 years ago

Solve the following system of equations and show all work. <br><br> y = -x^2 + 4<br> y = 2x + 1

Pavel [41]

-x^2 + 4 = 2x + 1
-x^2 - 2x + 4 - 1 = 0
-x^2 - 2x + 3 = 0
(x + 3)(-x + 1)= 0

x + 3 = 0 -x + 1 = 0
x = -3 -x = -1
x = 1

so x = -3 and x = 1

8 0

3 years ago