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julsineya [31]
3 years ago
8

Solve the system by elimination 4x+3y=-5 -x+3y=-10

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Subtract the 2nd row from the 1st row

5x = 5

Solve for x in the equation above

x = 1

Substitute x = 1 into any of the two equations above

Let's  pick the first equation; 4x + 3y = -5

4 * 1 + 3y = -5

Solve for y in the equation above

y = -3

Therefore,

<u>x = 1</u>

<u>y = -3</u>

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Write the exponential equation for this scenario. Mike buys a car for $45,000.00. The cars value depreciates (loses value) at a
gladu [14]

Answer:

A=45000(0.82)^t

Step-by-step explanation:

Given data

P= 45,000

rate= 18%

Recall the expression for the compound interest

A=P(1+r)^t

Since we are talking of depreciation

A=P(1-r)^t

Substitute

A=45000(1-0.18)^t\\\\A=45000(0.82)^t

Hence the exponential function is

A=45000(0.82)^t

6 0
3 years ago
Solve the formula for the area of a triangle A = (1/2) bh for height h
Hitman42 [59]
A = (1/2) bh for height h

2A = bh

first multiply both sides by 2 then divide both sides by b

Area of triangle = (1/2)bh

A = (1/2)bh

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h = 2A/b

110 = 1/2(11)h

110 = 5.5h

110/5.5 = 20

The answer Is H = 20

Hope this helps (:
4 0
3 years ago
Can someone plz help me with this
slava [35]

Answer:

Step-by-step explanation:

2a. f(-3) = (-3)^2-4(-3)+6 = 9+12+6 = 27

2b. f(-2) = 3(-2)^2-(-2)^3 -2 +1 = 3(4) - (-8) -2 +1

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8 0
2 years ago
Can someone please help me with this question?
Lena [83]
Answer is 17.7 gallons. Just use 10 gallons x 177%. It's me again, mark as branliest tq
6 0
3 years ago
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Help me pleasse th sdjkhhjdas
storchak [24]

_______________________________

<h3>Andre Bought:</h3><h3>• 1 Baseball Glove For $34 Each</h3><h3>• 2 Packs of Socks For $6 - 7.75% Each</h3>

<h3 /><h3>$34 + $8</h3><h3>= $42</h3><h3><u>Andre Paid A Total of $42</u></h3>

<h3>7.75% × $6 ÷ 100</h3><h3>= 0.465 × 2</h3><h3>= 0.93%</h3><h3><u>Andre Saved 0.93% In Total At The Sale</u></h3>

_______________________________

8 0
3 years ago
Read 2 more answers
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