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Rus_ich [418]
3 years ago
12

Pls i need it like now

Mathematics
1 answer:
schepotkina [342]3 years ago
7 0
You need to put the x or y value in the other equation ;
For example excersize a
It given that
Y=x^2+3x-1
Then you put it on the first equation :
x+x^2+3x-1=4
And then you solve it
x+x^2+3x-1-4=0
4x+x^2-5=0
We will make the order to seem easier
x^2+4x-5=0
x1=-5
x2=1
Then you put the x1,2 that you found on the second equation :
y=(-5)^2+3*(-5)-1=9
y=1^2+3*1-1=3
For summary :
x1=-5
x2=1
y1=9
y2=3

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I don't understand what the "!"s mean. Help please
kakasveta [241]

n! is called a factorial.


It would look something like this: n! = 1·2·3·...·n


An example:

5! = 1·2·3·4·5 = 120

6 0
3 years ago
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Ivahew [28]

Answer:

1.04

Step-by-step explanation:

8.04 - 7 = 1.04

I hope this helps!

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In RST, m R =(2x+10)°, m 5=(2x+25)°, and m T=(x-5)°.
cricket20 [7]

We know that : Sum of Angles in a Triangle is equal to : 180°

⇒ In ΔRST, The Sum of Angles ∠R , ∠S , ∠T should be equal to 180°

⇒ m∠R + m∠S + m∠T = 180°

⇒ (2x + 10)° + (2x + 25)° + (x - 5)° = 180°

⇒ (2x + 2x + x) + (10° + 25° - 5°) = 180°

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5 0
3 years ago
Which expression is equivalent to (3 x^ 2 - 7)​
Kay [80]

Answer:

What are the posible answers for the question?

Step-by-step explanation:

5 0
3 years ago
What is the equation of the line that passes through the points (1,5) and (0,3)?
Pavlova-9 [17]

Answer:

y=2x+3

Step-by-step explanation:

first use the y2-y1/x2-x1 then use y=mx+b after

plug in 3 for y2 and 5 for y1

then plug in 0 for x2 and 1 for x1

\frac{3-5}{0-1}=\frac{-2}{-1} =2 and 2 is ur slope

___________________

now use y=mx+b

i usually use the first point but u can u anyone u want

plug in 1 for x

plug in 5 for y

and plug in 2 for m

5=2(1)+b

5=2+b

subtract 2 on both sides

5-2=3

3=b and b is ur y-intercept

y=2x+3

hope this helps

4 0
3 years ago
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