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3 years ago

I'm lost.. How do you even start it???

Mathematics

2 answers:

Anastasy [175]3 years ago

7 0

$2x+y=4\\
-x+y=1\\\\
2x+y=4\\
\underline{x-y=-1}\\
3x=3\\
x=1\\\\
1-y=-1\\
y=2
$

Sladkaya [172]3 years ago

3 0

A) 2x + y = 4
B) -x + y = 1

Multiply B) by 2
B) -2x + 2y = 2 then add to A)
A) 2x + y = 4

3 y = 6
y = 2

B) -x + y = 1
-x +2 =1
x = 1

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Pls answer <br> take ur time

bekas [8.4K]

Answer:

y = 3/4x

Step-by-step explanation:

We need to find the slope of the line

We have point (0,0) and point (4,3)

m = (y2-y1)/(x2-x1)

= (3-0)/(4-0)

=3/4

The y intercept is 0 since it crosses the y axis at 0

The slope intercept form of the line is

y = mx+b

y = 3/4x +0

y = 3/4x

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3 years ago

Can somebody help me ?

goldfiish [28.3K]

Answer:

Step-by-step explanation:

Basically find the slope first.

(6,1)(9,5)

5-1/9-6

m=4/3

y=mx+b

1=4/3(6)+b

b=-7

y=4/3x-7

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2 years ago

9x + 8y3 – 7 = 3y3 -3<br> 9x+ 5y = 0

Vikki [24]

Answer:

102 actually just add it up

Step-by-step explanation:

add it up

5 0

3 years ago

Increase 47 litres by 5%

Morgarella [4.7K]

49.35 litres

47 times 1.05=49.35

(Sheldon got it right first)

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3 years ago

Read 2 more answers

dion flips a coin 20 times and records if it comes up heads. if getting heads is a success, what is the probability of a success

kolbaska11 [484]

Answer:

$\frac{1}{2}$

Step-by-step explanation:

The probability of success (getting heads) on one roll DOESNT affect other rolls, so we need to find probability of getting a head in a roll.

Probability is defined as the number of favorable outcomes divided by the total number of outcomes.

<em>Here, favorable outcome is getting a head. So, on one roll, getting a head is 1. Also, the total number of outcomes is either a head or a tail. So total number of outcomes is 2.</em>

Thus,

P(Heads) = 1/2

3 0

3 years ago