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seropon [69]
1 year ago
12

PLEASE HELPPP!! Solve the system of equations.

Mathematics
1 answer:
sdas [7]1 year ago
5 0

Answer:

<u>x= 4 </u>

<u>y= -2</u>

<em>Step-by-step explanation:</em>

-3y+5x=26\\-2y-5x=-16

Solve by using the <u>Elimination Method.</u>

-5y=10\\\\\frac{-5y}{-5} =\frac{10}{-5} \\\\y=-2

Now plug y into one of the original equation.

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

-2y-5x=-16

(-2*-2)-5x=-16

4-5x=-16

4-5x+5x=-16+5x

4+16=-16+5x+16

20=5x\\\\\frac{20}{5} =\frac{5x}{5} \\\\x=4

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

\left \{ {{x=4} \atop {y=-2}} \right.

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Genrish500 [490]

Answer:

delta =  {7}^{2}   - 4 \times 2 \times ( - 3) \\  = 49 + 24 = 73 \\ x 1=  \frac{ - 7 +  \sqrt{73} }{4}  \\ x 2=  \frac{ - 7  -  \sqrt{73} }{4}

3 0
2 years ago
PLEASE HELP!! ILL GIVE YOU BRAINLIEST!!
schepotkina [342]

Answer:

because when x ing a positive to a negative it will give you a negative however if you x a negative and a negitive it will give a positive

Step-by-step explanation:

7 0
2 years ago
NEED ANSWER ASAP ONLY 4 min
tensa zangetsu [6.8K]

Answer:

A

Step-by-step explanation:

-4x-10≤2

-4x≤12 Add 10 on both sides

-x≤3 Divide by 4 on both sides

x≤-3 put a negative on both sides

Hope this helps :D Please mark brainliest if correct :D

3 0
2 years ago
Read 2 more answers
Is 1/2 and 2/10 equaivalent fractions
kati45 [8]
1/2 is equivalent to 5/10 not 2/10
5 0
3 years ago
Read 2 more answers
In the year 2006, a company made $2.4 million in profit. For each consecutive year after that, their profit increased by 12%. Ho
Dmitriy789 [7]

Answer:

Step-by-step explanation:

For each consecutive year after that, their profit increased by 12%. The growth is exponential. We would apply the formula for exponential growth which is expressed as

A = P(1 + r)^t

Where

A represents the profit made after t years.

t represents the number of years.

P represents the initial profit made.

r represents rate of increase.

From the information given,

P = 2.4 × 10^6

r = 12% = 12/100 = 0.12

t = 4 years

Therefore,

A = 2.4 × 10^6(1 + 0.12)^4

A = 2.4 × 10^6(1.12)^4

A = 3776446.5

4 0
3 years ago
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