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3 years ago

A scale on a map shows that 2.5 centimeters represent 15 kilometers.

Mathematics

1 answer:

MrRissso [65]3 years ago

4 0

Answer:

cm for centimeters, km for kilometers.

If 2.5cm → 15 km, then

17.5 cm → x km

x= (15km*17.5cm)/(2.5cm)=105 km

Step-by-step explanation:

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If you flip two coins at once, will at least one coin land on heads?

anzhelika [568]

Answer:

There is 3 out of 4 chance you will get one head.

You are not guaranteed to get a head

Step-by-step explanation:

Lets determine the sample space

HH HT TH TT

These are the 4 things that can happen when we flip to coins

We want at least one head

3 of the 4 choices have at least 1 head

P (at least one head) = 3/4

4 0

4 years ago

X-1/x-2+x+3/x-4=2/(x-2).(4-x)

Varvara68 [4.7K]

The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

According to the statement

we have given that the equation and we have to prove that the given answer is a correct answer for those equivalent equation.

So, The given expression are:

$\frac{x-1}{x-2} +\frac{x+3}{x-4} = \frac{2}{(x-2).(4-x)}$

And we have to prove the answer.

So, For this

$\frac{x-1}{x-2} +\frac{x+3}{x-4}$

$\frac{({x-1}) ({x-4}) +({x+3})({x-2})} {(x-2) (x-4)}$

Then the equation become

$\frac{x^{2} -4x -x +4 + x^{2} -2x + 3x -6 }{(x-2) (x-4)}$

Now solve it then

$2x^{2} - 4x -2 / (x-2) (x-4)$

Now take 2 common from answer then equation become

$\frac{x-1}{x-2} +\frac{x+3}{x-4} = \frac{2}{(x-2).(4-x)}$

Hence proved.

So, The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

Learn more about equations here

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3 0

1 year ago

Given h(t)=-2(t+5)^2+4, find h(-8)

alexandr402 [8]

Substitute -8 for t in <span>h(t)=-2(t+5)^2+4:

h(-8) = -2(-8+5)^2 + 4 = -2(-3)^2 + 4 = -2(9) + 4 = -18 + 4

h(-8) = -18 + 4 = -14 (answer)</span>

5 0

3 years ago

Read 2 more answers

you and two friends pay $40 for tickets. the cost was divided three ways in the ratio 1:3:6. how much did each person pay9

Musya8 [376]

1+3+6=10
40=10 units
diidde by 10
4=1unit

4 times 1=4
4 times 3=12
4 times 6=24

they paid $4, $12 and $24

5 0

3 years ago

How do I solve this problem?

Brums [2.3K]

This looks crazy hard!!!!!

4 0

3 years ago