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natali 33 [55]
3 years ago
13

ASAP PLEASE 15 POINTS

Mathematics
2 answers:
charle [14.2K]3 years ago
7 0
The given set of equations:
y=-3x+1............(1)
y=2x-4 .............(2)

can be solved most conveniently by rewriting as
y =-3x+1 = 2x-4

We concentrate on the right equality, which is expressed in x only:
-3x+1 = 2x-4
Transpose and solve for x
1+4 = 2x+3x
5x=5
x=5/5=1
Substitute x=1 in the 
first equation: y=-3(1)+1=-2
second equation: y=2*x-4=2(1)-4=-2

So the solution is x=1, y=-2, or (1,-2)

alex41 [277]3 years ago
4 0

Answer:

(1,-2) I got a 100%

Step-by-step explanation:

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Jada uses 4cm tall bricks to build her tower.Her final tower is 80 bricks high.How many cm tall is it?
Alona [7]

Answer:

320

Step-by-step explanation:

4*80=320

3 0
2 years ago
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A jar contains 10 blue marbles, 3 red marbles, and 7 white marbles.
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Answer:

50% chance because (10)/(20)=1/2=0.5=50%

Step-by-step explanation:

hope this helps

8 0
2 years ago
The skateboard ramp has a width of 20 and a height of 16. What is its slope ( not to scale) ?​
slega [8]

Answer:

25.61 ?

Step-by-step explanation:

use Pythagoreans theorem

a^2+b^2=c^2

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4 0
2 years ago
The amount of time it takes Isabella to wait for the bus is continuous and uniformly distributed between 3 minutes and 17 minute
Arturiano [62]

Answer:

P(X>5) = 0.857

Step-by-step explanation:

Let X \sim uniform(3.17)

f(x) = \dfrac{1}{17-3}   ; \ \ \ 3 \le x \le 17

The required probability that it will take Isabella more than 5 minutes to wait for the bus can be computed as:

P(X > 5) =  \int ^{17}_{5} f(x) \ dx

P(X > 5) =  \int ^{17}_{5} \dfrac{1}{17-3} \ dx

P(X > 5) =\dfrac{1}{14}  \Big [x \Big ] ^{17}_{5}

P(X > 5) =\dfrac{1}{14} [17-5]

P(X > 5) =\dfrac{12}{14}

P(X>5) = 0.857

6 0
3 years ago
Evaluate the following expression when x = 4 and y = 5:
astraxan [27]
It is d hope it is correct

7 0
3 years ago
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