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never [62]
3 years ago
11

Solve each system using substitution or elimination. Show all required work. X^2+y^2=40 -x+y=-8

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0

Answer:

steps and answers in the pic..hope u can understand the calculations...

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Can someone help me with this
Alexxandr [17]

Answer:

B

Step-by-step explanation:

the perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is the length and w the width ) , then

P = 2(3\sqrt{15} ) + 2(\sqrt{15} ) ← distribute both parenthesis )

   = 6\sqrt{15} + 2\sqrt{15}

   = 8\sqrt{15}

5 0
2 years ago
An alarm system requires a 7-digit code using the digits 0 through 9. Each digit may only be used once in the code. How many dif
maks197457 [2]

<u>10M </u><u>different </u><u>codes </u><u>are possible.</u>

Probability Definition in Math-

  • Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty. We can predict only the chance of an event to occur i.e. how likely they are to happen, using it.
  • Four perspectives on probability are commonly used: Classical, Empirical, Subjective, and Axiomatic.
  • For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½ .

  • It’s simple. there are 7 digits, so that would mean you start with 0,000,000 and end with 9,999,999.
  • If the highest digit is 9,999,999 and you add a 1 more to it, you have a total of 10M combinations.

Learn more about probability

brainly.com/question/11234923

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8 0
2 years ago
WILL GIVE BRAINLIEST
steposvetlana [31]

Answer:

Page 3 - the y-intercept would remain at 5 and the slope would be 3 times the upward slope.

Page 5 - the y-intercept would remain at -2 and the slope would be 1/4 instead of 5

Step-by-step explanation:

In point slope form the slope and y-intercept can be read directly from the equation.

y = mx + b where m is the slope and b is the y-intercept.

4 0
2 years ago
If QR= 3x-2, RS= 2x+1, QS=6x-3, and R is between Q and S, then RS=​
rewona [7]

Answer:

RS = 5

Step-by-step explanation:

Since R is between Q and S , then

QS = QR + RS , that is

6x - 3 = 3x - 2 + 2x + 1

6x - 3 = 5x - 1 ( subtract 5x from both sides )

x - 3 = - 1 ( add 3 to both sides )

x = 2

Then

RS = 2x + 1 = 2(2) + 1 = 4 + 1 = 5

4 0
3 years ago
PLEASE PLEASE HELP ME
Sidana [21]
Sum of angle in a triangle is 180, so 33+70+x=180
x=77
x and y are vertical angles so y=77
6 0
3 years ago
Read 2 more answers
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