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STALIN [3.7K]
2 years ago
8

1.

Mathematics
1 answer:
ASHA 777 [7]2 years ago
8 0

Answer:

1)

x = 1

y = -3

2)

x = 3 or x = -3

Step-by-step explanation:

1)

System of equations, we plug in y to the second equation

4x + 2(4x-7) = -2\\4x+8x-14 = -2\\12x = 12\\x=1

We then plug x back into the first equation to find y

y = 4(1) -7\\y = -3

2)

4x^2 +3=39\\4x^2=36\\x^2=9\\x=3, -3

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Please really need help anyone
Ronch [10]

Answer:

<em>A = $5183.36</em>

Step-by-step explanation:

<u>Compound Interest</u>

It occurs when the interest is reinvested rather than paying it out. Interest in the next period is then earned on the principal sum plus previously accumulated interest.

The formula is:

{\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}}

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

Abdul deposited P=$4000 into an account with r=2.6% = 0.026 compounded quarterly. Since there are 4 quarters in a year, n=4. We are required to calculate the amount in the account after t=10 years.

Applying the formula:

{\displaystyle A=4000\left(1+{\frac {0.026}{4}}\right)^{4*10}}

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5 0
3 years ago
State what additional information is required in order to know that the triangles are congruent by AAS. part 2
SVEN [57.7K]

Answer:

Step-by-step explanation:

The trick is to find the third angle

180 - A - <BCA = <CBA

180 - X - <BCX = <CBX

Everything else is OK

<CBA = <CBX                  Equals equated to an equal express = an equal expression.

Now by a little slight of hand, you get the two triangles to be equal by ASA, which always works.

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3 years ago
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lozanna [386]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Plz help will choose brainliest provide an explanation.
nika2105 [10]

Answer:

I wanna say b

Step-by-step explanation:

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3 years ago
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Mamont248 [21]

Answer:

(- 1, 0) and (9, 0 )

Step-by-step explanation:

To find the x- intercepts let y = 0 in the equation and solve for x, that is

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3 years ago
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