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2 years ago

A drink in japan costs 374 yen. The exchange rate is £1 = 189 yen. What is the cost in pounds

Mathematics

1 answer:

alina1380 [7]2 years ago

7 0

Answer:

Roughly £2

Step-by-step explanation:

multiply the echange rate by 2 , its 378Yen

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Two solutions of the equation Ax+By = 1 are (2, -1) and (-3,-2). Find A and B.

kati45 [8]

Answer:

Substitute in the values of both given coordinates & form 2 equations:

$\left \{ {{A(2)+B(-1)=1} \atop {A(-3)+B(-2)=1}} \right. \\\\=\left \{ {{2A-B=1} \atop {-3A-2B=1}} \right.$

Find the value of B from the equation 2A - B = 1:

$2A-B=1\\-B=1-2A\\B=2A-1$

Substitute in the B-value to the other equation:

$-3A-2B=1\\-3A-2(2A-1)=1\\-3A-4A+2=1\\-7A=1-2\\-7A=-1\\A=\frac{-1}{-7} =\frac{1}{7}$

Find the B-value using the equation from before:

$B=2A-1=2(\frac{1}{7})-1=\frac{2}{7} -\frac{7}{7} =-\frac{5}{7}$

Therefore the equation Ax + By = 1 would equal:

$\frac{1}{7} x-\frac{5}{7} y=1$

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3 years ago

Use the commutative property to rewrite the expression x + 16 *<br><br><br> please help me

valentinak56 [21]

Answer:

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2 years ago

Read 2 more answers

If g (x) = 3x²-4, then find g (-3)

Semenov [28]

Answer:

g(-3) = 23

Step-by-step explanation:

This question is telling us that x = -3. Knowing this, we can plug x into the equation and solve to find g(-3).

$g(-3) = 3(-3)^{2} -4$

$g(-3) =3(9)-4$ Square -3 to get 9

$g(-3) = 27-4$ Multiply 9 by 3 to get 27

$g(-3) = 23$ Subtract 4 from 27 to get 23

Thus, g(-3) is equal to 23.

I hope this helps! Good luck!

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2 years ago

Chad owns twice as many cds as carlin owns. if you add 6 to the number of cds chad owns and then divide by 7, you get the number

Luba_88 [7]

35 cds does carlin have

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3 years ago

Julia and Rodney decided to invest 15% of their salaries.The table shows their principal balance,interest rate,and type of inter

Masja [62]

On the account with interest compounded annually, the account balance will be
P*(1 +r)^t
4500*1.06³ = 5358.57
so the interest earned will be
5358.57 -4500 = 859.57

On the account with simple interest, the interest earned will be
I = Prt
I = 4500*.06*3
I = 810.00

The total interest earned on the two accounts will be
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3 years ago