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swat32
3 years ago
13

Solve the system of equations:

Mathematics
1 answer:
PolarNik [594]3 years ago
4 0

Answer:

D.(-1,-5) and (5,7)

Step-by-step explanation:

I used a graphing tool to graph the two equations together. When graphed, the equations intercept (5,7) and (-1,-5). Therefore, they are the solutions to the system.

Option D should be the correct answer.

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Rounding whole number which number could round to 80,600 80,532 80,549 80,617 80, ,651
Burka [1]

Answer:

80,617

Step-by-step explanation:

the 1 in the tens place puts the number back down to 600

6 0
2 years ago
HELP HELP HELP Find X for the log function!<br><br> Please include the steps
Keith_Richards [23]

Answer: yield x

Step-by-step explanation: Definition. The logarithm is denoted "logb x" (pronounced as "the logarithm of x to base b" or "the base-b logarithm of x" or (most commonly) "the log, base b, of x"). In the equation y = logb x, the value y is the answer to the question "To what power must b be raised, in order to yield x?".

7 0
2 years ago
A chemist has two acid solutions in stock: one is a 50% solution, and the other is a 80% solution. How much of each solution sho
arsen [322]
Easy way, visual

                    50---68---80%
Difference        18    12
Invert order to give ratio of 50% and 80%
Ratio                12    18 = 2:3

So by simple proportion:
volume of 50% needed = 100*2/(2+3)=40 mL
volume of 80% needed = 100*3/(2+3)=60 mL

Algebra way
Let x=volume of 50% needed.
Then
0.50*x+0.80*(100-x) = 0.68(100)
Expand and solve for x
0.5x+80-0.8x = 68
0.8x-0.5x = 80-68
0.3x = 12
x=12/0.3 = 40 mL (volume of 50%)
100-x=100-40=60 mL (volume of 80%)

8 0
3 years ago
A 5000​-seat theater has tickets for sale at ​$28 and ​$40. How many tickets should be sold at each price for a sellout performa
Kamila [148]

Answer:

Let's denote:

x: number of ticket 28$

y: number of ticket 40$

Then, we have:

x + y =5000

28x + 40y = 153200

=> 28(5000 - y) + 40y = 153200

=> 12y = 153200 - 140000

=> 12y =13200

=> y = 1100 (ticket 40$)

=> x = 5000 - 1100 = 3900 (ticket 28$)

8 0
2 years ago
Which statements below correctly describe the relationship shown in the table
Taya2010 [7]
I believe it is d.
Equation is y= 1/2x.
When a number or fraction is next to a variable that means to multiply.
So let’s replace the variable,x, with 6.
If you multiply 1/2 by 6, you get 3.
If you multiply 1/2 by 24 you get 12.
Continue that process to find the other answers
4 0
2 years ago
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