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sergij07 [2.7K]
4 years ago
14

By system of substitution solve y= -3x-5 y=4

Mathematics
1 answer:
Musya8 [376]4 years ago
7 0
4 = -3x-5
3x = -9
x = -3
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If you drive your car for 4.5 hours at an average speed at 70 miles per hour how far did you go ?
vodka [1.7K]
I think it would be 315. because 4.5*70..but im not sure
3 0
3 years ago
Solve x^2+2x+7=0 using the quadratic formula.
Aneli [31]

Answer:

x=-1\pm \sqrt{6}i

Step-by-step explanation:

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

x=\frac{-(2)\pm\sqrt{2^2-4(1)(7)}}{2(1)}

x=\frac{-2\pm\sqrt{4-28}}{2}

x=\frac{-2\pm\sqrt{-24}}{2}

x=\frac{-2\pm\sqrt{-1*24}}{2}

x=\frac{-2\pm\sqrt{-1}\sqrt{24}}{2}

x=\frac{-2\pm i\sqrt{4*6}}{2}

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x=\frac{-2\pm2i\sqrt{6}}{2}

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5 0
3 years ago
Clayton has $500 in his retirement account, and Jason has $400 in his. Clayton is adding $10 per day, whereas Jason is contribut
daser333 [38]

Answer:

$1000

Step-by-step explanation:

We can form an equation for Clayton's account: C = 500 + 10x

We can form an equation for Clayton's account:  J = 400 +12x  

(where x is the number of days)

When the two accounts will contain the same amount, it means: C = J

<=> 500 + 10x  = 400 +12x  

<=> x =50

After 50 days, there accounts will be balance. Then, we substitue x into any of the 2 equation to find out the amount: 500 + 10(50) = $1000

6 0
3 years ago
1 1/3 x 5/8<br><br> A.3/4<br> B.4/5<br> C.5/6<br> D.5/8
Dmitriy789 [7]
The answer is 5/6, hope this helps
5 0
3 years ago
Read 2 more answers
Pls help picture is attached 50 points PLS HELP THANK U
Paha777 [63]

Answer:

The answer is A

Step-by-step explanation:

The "-5" in the equation signifies that the negative y-int is -5. The -2x signifies that the slope will be negative as well

4 0
3 years ago
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