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4 years ago

15

A model of a plane is made using a scale of 1:5. If the wings of the model are 1.2m long, what is the actual length of the wings

on the plane?

1 answer:

7nadin3 [17]4 years ago

3 0

Answer:

6 m

Step-by-step explanation:

Multiply your scale by 1.2 m:

1 : 5 = 1.2 m : 6.0 m

The wings on the plane are 6.0 m long.

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On a map where each unit represents one kilometer, two marinas are located at P(4,2) and Q(8,12). If a boat travels in a straigh

Slav-nsk [51]

Answer:

B

Step-by-step explanation:

draw a right angled triangle with the right angle in the bottom left

label P as the bottome left corner and write its coordinates next to it

do same with Q

the length of the triangle is 4 (8-4 = 4)

the height is 10 (12-2 = 10)

use pythagoras to work out the hypotenuse:

$\sqrt{4^{2}+10^{2}} =2\sqrt{29}$

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3 years ago

A blood bank needs 7 people to help with a blood drive. 17 people have volunteered. Find how many different groups of 7 can be f

Andreas93 [3]

Answer:

ay no sirrr

Step-by-step explanation:

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3 years ago

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Mr Clark and ten of his friends go out to lunch. The total bill comes to $175.42 . They decide to leave a 20% tip. Each person w

arlik [135]

Answer:

Step-by-step explanation:175.42x .20=35.08 35.08Divided by 11=3.19

so each would pay 3.19 tip

total each would pay for bill would be 175.42+35.08=210.50

210.50divided by 11 =19.14

6 0

3 years ago

Find the lowest common denominator of the following fractions.5/n-2 and n+2/ n^2-4 n - 2 n2 - 4 (n - 2)(n2 - 4)

DanielleElmas [232]

Answer:

(n-2)(n+2)

Step-by-step explanation:

The denominator of the second fraction is the difference of squares, so can be factored using the formula for that.

(n^2 -4) = (n -2)(n +2)

Now, you will note that the second fraction has a numerator that is equal to one of the factors in the denominator. In other words, the whole fraction can be simplified to ...

(n +2)/((n +2)(n -2)) = 1/(n -2) . . . . with the restriction n≠-2

This reduced form of the fraction has the same denominator as the first fraction, so you can say that the lowest common denominator is that: (n -2).

If there is some reason you don't want to reduce the second fraction, the lowest common denominator will be (n -2)(n +2).

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4 years ago

Jasmine wants to have an equal quantity of forks and spoons, what is the least number of packages of forks jasmine should buy to

vlada-n [284]

Answer:

6 packages of forks

Step-by-step explanation:

If Jasmine wants to have an equal quantity of forks and spoons, we need to list the multiples of each quantity and determine the least common multiple (LCM).

Forks: 10, 20, 30, 40, 50, 60, 70, 80, 90

Spoons: 12, 24, 36, 48, 60, 72, 84, 96

The LCM in this example is 60. In order to have exactly 60 forks and 60 spoons, Jasmine will need to buy 6 packages of forks [60 ÷ 10 = 6] and 5 packages of spoons [60 ÷ 12 = 5].

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4 years ago