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Vilka [71]
2 years ago
9

Which is a solution of the equation? 2x - y = 5 O 7 O (3,-1) O (2,-1) O (1,2)

Mathematics
1 answer:
Tju [1.3M]2 years ago
6 0

Answer:

I'm not sure what the answer is, but try Photo math. it helps me so much with my equations, and it'll even tell you the steps to get the answer.

You might be interested in
Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select
ollegr [7]

Answer:

12.08

Step-by-step explanation:

For each sunflower, there are only two possible outcomes. Either it germinates, or it does not. The probability of a sunflower germinating is independent of other sunflowers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Seventy-six percent of sunflower seeds will germinate into a flower

This means that p = 0.76

Samples of 800:

This means that n = 800

The standard deviation for the number of sunflower seeds that will germinate in such samples of size 800 is:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{800*0.76*0.24} = 12.08

5 0
3 years ago
50 coins all dimes and quarters total is 10.25 how many dimes?
Yanka [14]

Answer:

You can do these "in your head" like this:

50 dimes would be $5.00

Each quarter adds 15 cents.

10.25 - 55.00 = $5.25 added

Step-by-step explanation:

525/15 = 35 quarters

--> 15 dimes

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

or,

d + q = 50

10d + 25q = 1025

etc

8 0
2 years ago
Which statement is true about the graphs of the two lines y=-8x-5/4 and y= 1/8 x + 4/5?
PIT_PIT [208]
These two lines intersect. 
6 0
3 years ago
Mikayla evaluated the expression 0.86 × 23.4 using the steps shown below.
Serga [27]

Answer:

Mikayla moved the decimal incorrectly.

Step-by-step explanation:

mikayla evaluated the expression 0.86 × 23.4 using the steps shown below.

0.86

× 23.4

344

2580

+ 17200

= 201.24

LEts do the multiplication without decimals

                    8 6

            x    2 3 4

          --------------------

                  3 4 4

              2 5 8 0

            1 7 2 0 0

------------------------------

             2 0 1 2 4

0.86 has two numbers after the decimal point and 23.4 has one number after the decimal point

So we move 3 places to the left ( 20.124)

Mikayla moved the decimal incorrectly.

8 0
3 years ago
Read 2 more answers
Does a vertical asymptote acts like a break in continuity
sergey [27]
I think you wanted to know whether the statement in question is true or false. based on this assumption i am answering the question. It is absolutely true that <span>a vertical asymptote acts like a break in continuity. I hope that this answer has actually come to your great help.</span>
8 0
3 years ago
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