3 years ago

The difference of some number and eighteen

Mathematics

1 answer:

PIT_PIT [208]3 years ago

8 0

The answer is x-18 Do need the complete answer of your question??

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Mei does 6 problems in 18 minutes. How many can she complete in 12 minutes

Dmitriy789 [7]

Do cross multiplication

6 = x
18 12

Now cross multiply

(6)(12) = (18)(x)

72 = 18x

Divide both sides by 18

72 = 18x
18 18

4 = x

So tMei can complete 4 problems in 12 minutes.

5 0

2 years ago

Find the following trigonometry values cos (150*) = ? sin (150*) = ?

melisa1 [442]

Answer:

See below in bold.

Step-by-step explanation:

cos 150 = - cos(180 - 150)

= - cos 30

= -√3/2.

sin 150

= sin (180 - 150

= sin 30

= 1/2.

4 0

2 years ago

Read 2 more answers

smantha saw twobottles of ketchup at the store for the same price.One bottle contained4 pints of ketchup and the other contained

ss7ja [257]

1.25 quRts is the better bargain!

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2 years ago

Mickey and Donald earn $53 weekend after taxes Mickeys share is seven dollars greater than Donald's how much does Donald earn ea

igor_vitrenko [27]

Donald earns $23 each weekend and Mickey earns $30.

Step-by-step explanation:

Given,

Money earned by Mickey and Donald = $53

Let,

Share of Mickey = x

Share of Donald = y

According to given statement;

x+y=53 Eqn 1

x = y+7 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

$(y+7)+y=53\\y+7+y=53\\2y=53-7\\2y=46$

Dividing both sides by 2

$\frac{2y}{2}=\frac{46}{2}\\y=23$

Putting y=23 in Eqn 2

$x=23+7\\x=30$

Donald earns $23 each weekend and Mickey earns $30.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

Señora Cruz will use four triangles on the floor decoration. how many square centimeters of paper will Señora Cruz use to create

VARVARA [1.3K]

I have the same one! :) so confused too!

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2 years ago