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2 years ago

Erica has twice as many magazines as puzzle games. She has 30 of both in total. Write an

Mathematics

2 answers:

MArishka [77]2 years ago

5 0

She has 20 magazines and 10 puzzle games

m=magazines (20)
p=puzzle games (10)

m + p=30
m =2p
2p+p=30

kicyunya [14]2 years ago

4 0

Answer:

Well go ask Erica how many magazines she has.

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Need help! Law of cosines...find b round to the nearest tenth please

dusya [7]

ANSWER

$B = 27.8 \degree$

EXPLANATION

The law of cosine is given by the formula:

${b}^{2} = {a}^{2} + {c}^{2} - 2bc \cos(B)$

From the diagram,

a=17, b=8, c=16

We substitute the given values into the formula to obtain:

${8}^{2} = {17}^{2} + {16}^{2} - 2(17)(16)\cos(B)$

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$64 = 545- 544\cos(B)$

$64 - 545 = - 544\cos(B)$

$- 481 = - 544\cos(B)$

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$B = 27.8 \degree$

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3 years ago

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You can buy DVDs at a local store for 15.59 each. You can buy them at on online store for 13.99 each plus $6 shipping. How many

dalvyx [7]

Local(L) = 1 x (15.99)
Online(O) = (1 x 13.99) + 6

So use that equation until you find the same number.

L1=15.99
O1=19.99

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L3=47.97
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3 years ago

The difference of two numbers is 685. The smaller of the numbers is 262. What is the other number?

jeyben [28]

Step-by-step explanation:

Let the two numbers be x and y 

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Let the smaller number be y 

x - 262 = 685

x = 685 + 262

Therefore x = 947

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Step-by-step explanation:

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seraphim [82]

Answer:

f^-1(v)=v/x-3/x

Step-by-step explanation:

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