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3 years ago

7

Solve the simultaneous equations by substitution 8y−3x=23 3x=2y+1

1 answer:

Oxana [17]3 years ago

5 0

Answer:

I love algebra anyways

The ans is in the picture with the steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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Factorise tis please.<br> <img src="https://tex.z-dn.net/?f=%20%28x%2B3%29%5E%7B2%7D%20%2B2%28x%2B3%29" id="TexFormula1" title="

Otrada [13]

$\displaystyle \boxed{(a+b)=a^2+2ab+b^2} \\ \\ (x+3)^2+2(x+3)= \\ x^2+2 \cdot x \cdot 3 +3^2+2x+6 = \\ x^2+6x+9+2x+6= \\ x^2+8x+15= \\ \\ \Delta= b^2-4ac \\ \Delta=8^2-4 \cdot1 \cdot15 \\ \Delta=64-60=4 \\ \\ \\ X_{1,2}= \frac{-b\pm \sqrt{\Delta} }{2a} = \frac{-8\pm2}{2} = \\ \\X1=5 \\ X2=3$

5 0

3 years ago

In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60° angle and the 70° angl

Dmitry_Shevchenko [17]

<u>Answer:</u>

The value of x is 50°.

<u>Step-by-step explanation:</u>

<u>We know that:</u>

x = y
2(70 + 60) + x + y = 360

<u>Work:</u>

2(130) + x + x = 360
=> 260 + 2x = 360
=> 2x = 360 - 260
=> 2x = 100
=> x = 50

Hence, <u>the value of x is 50°.</u>

Hoped this helped.

$BrainiacUser1357$

7 0

2 years ago

Read 2 more answers

HELP HOW DID JEB FOUND 22 AS X? NEED EXPLANATION RIGHT NOW!!!

malfutka [58]

He assumes that 60-x and 2x-6 are vertical angles, so he equated these two expressions.
60-x=2x-6
60+6=2x+x
66=3x
x=22

6 0

2 years ago

Given that (5,-4) is on the graph of f(x) find the corresponding point for the function -1/4f(x)

dusya [7]

For (x, f(x)) = (5, -4), you want to find (x, -1/4·f(x)). That will be

... (5, -1/4·(-4)) = (5, 1)

7 0

4 years ago

I'll give you brainliest if answered correctly!!<br><br> In the Giver book, What was Jonas's dream?

Savatey [412]

Answer:

His dream was that he wanted to bath his friend fiona

Step-by-step explanation:

4 0

4 years ago