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Elanso [62]
3 years ago
11

System of Equations y=-x-1 y+x=3 Solve?

Mathematics
1 answer:
ozzi3 years ago
6 0
Solve by substitution

\sf{y=-x-1}
\sf{y+x=3}

Just plug in y=-x-1 into y+x=3

So we get:

\sf{(-x-1)+x=3}

Simplify that:

\sf{-1=3}

And since that is not true, that means this system of equations has no solutions!
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Find all solutions of the equation in the interval [0,2pi)<br> 8sec^2x+4tan^2x-12=0
andrezito [222]
Π/6+2πk
5π/6+2πk
you need to factor and use trig identities

6 0
3 years ago
Read 2 more answers
The table shows how far a distance runner has traveled since the race began. What is her average speed, in miles per hour, durin
grigory [225]

Answer:

5\ \frac{miles}{hour}

Step-by-step explanation:

<u><em>The complete question is</em></u>

The table shows how far a distance runner has traveled since the race began. What is her average speed, in miles per hour, during the interval 0.75 to 1.00 hours?

Time Elapsed (Hours) Miles Traveled (Miles)

0.50 2.00

0.75 3.50

1.00 4.75

Let

x ----> the time in hours

f(x) ----> the distance traveled in miles

so

we have

x (Hours)   0.50   0.75  1.00

f(x) (Miles)  2.00   3.50  4.75

we know that

To find the average speed, we divide the change in the output value by the change in the input value

the average speed is equal to

\frac{f(b)-f(a)}{b-a}

In this problem we have

a=0.75

b=1.00

f(a)=f(0.75)=3.50  

f(b)=f(1.00)=4.75

Substitute

\frac{4.75-3.50}{1-0.75}

\frac{1.25}{0.25}

5\ \frac{miles}{hour}

8 0
3 years ago
Read 2 more answers
The multiplication law is potentially helpful when we are interested in computing the probability of a. mutually exclusive event
Korvikt [17]

Answer:

b )  the intersection of two events

Step-by-step explanation:

Gary and Steve are both hosting . There are 50 buttons total, 15 buttons are blue and 27 buttons are red. Gary puts all of the buttons into a bag. Steve and Gary both want to wear red buttons.What is the probability ? To solve this problem, you need to understand the Multiplication Rule of Probability.This probability  means to find the probability of the intersection of two events, multiply the two probabilities.

Probability of two events occurring that is called intersection of two events. There are two different set of events , called independent and dependent events.

Independent events  event is not affected by a previous event.

A dependent event is when one event influences the outcome of another event . To find the intersection of two events, whether they are independent or dependent, multiply the two probabilities together.

3 0
4 years ago
CAN U PLZ ANSWER IT?
Vadim26 [7]
So you subtitute into the equation
so T=RH
if R=10 and H=35
so 10 per hour so
10 times 35 or (R times H)
so 350=T

b.
if is R=12 and H=40
subsitute and get
12 times 40 (RH) which is
480=T
4 0
3 years ago
Read 2 more answers
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP plzzzzzzzzzzzz example i do anything just help
Snowcat [4.5K]

Answer:

-9/20

(Decimal: -0.45)

Step-by-step explanation: 1/2 -1/4

                                             -2/5

                                       = 1/-5 -1/4

                                      =-1/5- 1/4

                                       = -1/5 +-1/4

                                      = -9/20

5 0
3 years ago
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