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Helen [10]
3 years ago
12

Help!!! I will give brainliest.

Mathematics
1 answer:
iVinArrow [24]3 years ago
7 0
4x - 4y = -36
3x + 4y = 8
7x = -28
/7 /7
x = -4

-4 - y = -9
+4 +4
-y = -5
/-1 /-1
y = 5

(-4 , 5)
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Can someone help me with my homework its experimental and theorectical probability
Makovka662 [10]
Yes sure what’s the question?
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3 years ago
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NO LINKS!! Jacob just won $32000 on the new game show, "The Wall,". He invested his winnings at an interest rate of 4.5%, compou
mixer [17]

Answers:

a) See the table below

b) The equation is y = 32000(1.01125)^x

c) $40,024.02

d) See the graph below

=========================================================

Explanations:

a)

Start with part (b) where I detail how to get the equation.

Once the equation is found, plug in x = 0 to get

y = 32000(1.01125)^x\\\\y = 32000(1.01125)^0\\\\y = 32000\\\\

Repeat for x = 1

y = 32000(1.01125)^x\\\\y = 32000(1.01125)^1\\\\y = 32360\\\\

Repeat for x = 2, x = 3, x = 4 and x = 20 to get the table shown below.

-----------------------

b)

The template for any exponential equation is y = a(b)^x

a = starting amount = 32000

b = growth factor

The annual interest rate is 4.5%

We compound quarterly, so the quarterly rate is (4.5%)/4 = 1.125% which converts to the decimal form 0.01125; adding one to this leads to the growth factor of b = 1.01125

We go from y = a(b)^x to y = 32000(1.01125)^x

-----------------------

c)

Plug in x = 20 to represent 20 quarters have elapsed (aka 20/4 = 5 years)

y = 32000(1.01125)^x\\\\y = 32000(1.01125)^{20}\\\\y \approx 32000(1.25075052084381)\\\\y \approx 40024.016667002\\\\y \approx 40024.02\\\\

The investment would be worth $40,024.02 after five years, aka twenty quarters.

-----------------------

d)

See below for the graph. I'm using GeoGebra to make the graph. Another option is Desmos. It's preferable to use technology than to graph by hand. If you wanted to graph by hand, then you'd plot each of the points found in the table. Then draw a curve through all those points.

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2 years ago
How to solve 0.01x+0.07y=0.22 and 0.03x-0.05y=0.14 by substitution
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0.01x + 0.07y = 0.22
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x = 22 -7y

3*(22-7y) -5y =14
66 - 21y -5y =14
-26y = - 52
y =2

x + 14 = 22

x= 8 
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3 years ago
write word problems that represent each way you an use a remainder in a division problem. include solutions.
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Bob had 45 slices of apples to share with his 6 friends. He only wants to share it with his friends, excluding him. How many slices of apple does each friend get and how many will Bob have leftover? How would he share the rest of slices to his friends?

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If AB = 18, BC = 10, and CA = 13, list the angles of mc084-1.jpg in order from smallest to largest.
a_sh-v [17]
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I hope this helped and Good luck

thank you


4 0
3 years ago
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