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never [62]
4 years ago
10

Please help!?! Last grade for my 4th quarter of quarantine school!

Mathematics
2 answers:
viva [34]4 years ago
8 0

Answer:3x^2-5x=-8 is the one that has 2 complex solutions

Step-by-step explanation:

xenn [34]4 years ago
4 0
All except the 12x=9x2+4
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A party rental company has chairs and tables for rent.The total cost to rent 2 chairs and 5 tables is $35. The total cost to ren
kvv77 [185]

Answer: The cost of renting a chair is $2.5 while the cost of renting a table is $6

Step-by-step explanation: Let the cost chair rental be called h, while the cost of table rental shall be called t. To rent two chairs and five tables cost $35, so we can express this as

2h + 5t = 35

Also to rent eight chairs and three tables cost $38, and this too can be expressed as

8h + 3t = 38

We now have a pair of simultaneous equations as follows

2h + 5t = 35 ———(1)

8h + 3t = 38 ———(2)

We shall use the elimination method since all the unknown variables have coefficients greater than 1.

Multiply equation (1) by 8 and multiply equation (2) by 2. We now have

16h + 40t = 280 ———(3)

16h + 6t = 76 ———(4)

Subtract equation (4) from (3)

34t = 204

Divide both sides of the equation by 34

t = 6

Having calculated that, substitute for the value of t into equation (1)

2h + 5(6) = 35

2h + 30 = 35

Subtract 30 from both sides of the equation 2h = 5

Divide both sides of the equation by 2

h = 5/2 or (2.5)

Therefore the cost of rental for each chair (h) is $2.5 and the cost of rental for each table (t) is $6

5 0
4 years ago
Solve: 5a + 15 = 45<br> O a = 12<br> O a = 6<br> O a = -6<br> O a = -12
anygoal [31]
I believe it’s a = 6
4 0
3 years ago
FOR 10 POINTS WILL MARK BRAINLIEST It costs $175 to rent a jet ski for 2 hours. It costs $300 to rent a jet ski for 2 hours. It
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(y) \times 2
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For a trapezoid with a height of 7 centimeters and base lengths of 6 centimeters and 10 centimeters, the area is
soldier1979 [14.2K]

\bf \textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} a,b=\stackrel{bases}{parallel~sides}\\ h=height\\[-0.5em] \hrulefill\\ a=6\\ b=10\\ h=7 \end{cases}\implies A=\cfrac{7(6+10)}{2} \\\\\\ A=\cfrac{7(16)}{2}\implies A=7(8)\implies A=56

5 0
3 years ago
Read 2 more answers
Help please I don’t understand this
ELEN [110]

Answer:

x=-2

sorry i messed up coord val :/

Step-by-step explanation:

7 0
3 years ago
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