2 years ago

If y varies directly as x, what is the value of y in these ordered pairs? (5, 20) and (15, y)

Mathematics

1 answer:

evablogger [386]2 years ago

8 0

Answer:

y=60

Step-by-step explanation:

Multiply the x by 4

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A laptop computer is purchased for $2000. After each year, the resale value decreases by 25%. What will the resale value be afte

wel

Answer:

2000? ... assume $2000

Resale Value = $2000*(1 - 0.25)t/yr

where: t = number of year after purchase

at t = 3 yr

Resale Value = $2000*(1 - 0.25)3 = $843.75

checking: at t = 0 $2000 (purchase price)

at t = 1 yr $2000 - 0.25*$2000 = $2000 - $500 = $1500

at t = 2 yr $1500 - 0.25*$1500 = $1500 - $375 = $1125

at t = 3 yr $1125 - 0.25*$1125 = $1125 - $281.25 = $843.75

8 0

3 years ago

A+46=-114<br><br> plz show how u got the answer

Soloha48 [4]

Answer:

a = 160

Step-by-step explanation:

a + 46 = -114

a + 46 - 46 = -114 - 46

a = 160

8 0

3 years ago

Can someone explain to me how to do question number 6 please?

slavikrds [6]

Hope this helps but try to do process of elimination.

7 0

2 years ago

MOre geometry.<br> Sorry i struggle.

il63 [147K]

1/2 (Base x height) = area

1/2 (4*x)=10

2x=10

X=5

The height is 5 units

5 0

3 years ago

What is PA <br> Enter your answer in the box

SSSSS [86.1K]

Answer:

Step-by-step explanation:

P is the in-center

⇒PA=PE=PD because they are in-radius of the in-circle

We know that, tangent segments drawn from a point outside the circle are always equal in length

⇒DK=EK=7.2

In right triangle PKE,

using Pythagoras' Theorem : $PK^{2}=PE^{2}+KE^{2}$

⇒ $PE^{2}=PK^{2}-KE^{2}$

⇒ $PE=\sqrt{PK^{2}-KE^{2} }$

⇒ $PE^{2}=\sqrt{7.8^{2}-7.2^{2}} }$

⇒ $PE=3$

Therefore, $PA=3$

3 0

3 years ago