I need to find how many solutions does the system have.

Answers

Answer 1

Answer: From what I got there is one real solution :)

Rearrange the second equation to give y=2-2x, substitute into the first equation to give you a value for x and then using that you can work out y for the exact coordinates of intersection :)

Also they are both straight line graphs so they will either have one or no solutions

Hope this helped :)

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Name the property the equation illustrates.9 + (8 + 1) = (9 + 8) + 1 A) Commutative Property of Multiplication B) Associative Property of Addition C) Commutative Property of Addition D) Inverse Property of Addition
If takes 5 farmers 10 days to plant a garden. How many days will it take 10 farmers?
If a vector pointing upward has a positive magnitude, a vector pointing downward has a negative magnitude. True or false?

Biologists are treating a lake contaminated with bacteria. The level of contamination is changing at a rate of dN/dt=-1110/t² -230 bacteria percubic centimeter per day, where is the number of days since treatment began. Find a function N(t) to estimate the level of contamination if the
level after I day was 5380 bacteria per cubic centimeter.

Answers

Answer: the function N(t) to estimate the level of contamination in the lake is:

N(t) = -1110 ln(t) - 230t + 1110 ln(I) + 230I + 5380

Step-by-step explanation: ∫ dN/dt dt = ∫ (-1110/t² -230) dt

N(t) = -1110 ln(t) - 230t + C

N(I) = -1110 ln(I) - 230I + C = 5380

C = 1110 ln(I) + 230I + 5380

Haddle wrote a check to the grocery store for $156.00. However, when she looks at her check register later that night, she sees she only has$122.66 In her checking account. Haddle has opted in to the standard overdraft practices at her bank. How many fees is Haddle likely to pay for

writing the check?

Answers

Answer:

she will have one fee for standard overdraft practices and that will prevent a fee from the grocery. store

Step-by-step explanation:

We are told she wrote a check to the grocery store for $156.00.

And that when she looked at her check register later that day, she had only $122.66.

This means she doesn't have sufficient balance for the grocery.

It means the bank will pay the overdraft and it attracts charges which may vary for different banks.

Thus, she will have one fee for standard overdraft practices and that will prevent a fee from the grocery store

The distance to the nearest gas station is 24/5 kilometers.what is this distance written as a decimal

Answers

24 / 5 = 4.8 km

To get a decimal from a fraction, divide top number by the bottom number

Kelly is saving her money to buy a car. She has $250, and she plans to save $75 per week from her job as waitress.a. Model the situation using an arithmetic sequence.

b. How much will kelly have saved after 8 weeks?

c. If the car costs $2000, how long will it take her to save enough money at this rate?

Please someone help me.

Answers

so she is essentially saving 250+n*75, where n is the number of weeks.

after 8 weeks she will have 250+8*75, (you need to substitute n for the number of weeks, which is 8)

which is
250+600=850

how many more does she need for a car?
she is still missing 2000-850, that is 1150. divide it by 75: it's a little more than 15: so she actually needs to save for 16 weeks after she's been saving for 8, that's a total of 24 weeks.

so in total it will take her 24 weeks (and she will have a little extra).

Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were allergic to penicillin, Nathan had a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The test is 98% accurate. What is the probability that Nathan is allergic to penicillin and the test predicts it?0.005

0.015

0.245

0.735

Answers

Answer:

Option C is right answer

Step-by-step explanation:

Given that Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were allergic to penicillin, Nathan had a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The test is 98% accurate.

Probability that Nathan is allergic to pennicillin and the test predicts it

=Prob (Nathan is allergic)*P(test predicts it correct)

= 0.75(0.98)

=0.245

Answer:

0.735

Step-by-step explanation:

plato

Find the slope, if it exists, of the line containing the pair of points. (-17,-9) and (-19-18) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The slope is (write an integer or a simplified fraction.)_________ B. The slope is undefined.________