MATHEMATICS HIGH SCHOOL

Can someone help me solve for x

Answers

Answer 1

Answer:

(4x+3)+(2x+9)=180

6x+12=180

6x=180-12

6x=168

x=168/6

x=28

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Kaylah's cell phone has a mass of 50,000 centigrams. what is the mass of her phone in grams

Answers

50,000 centigrams / 100 = 500 grams

Evaluate the expression below for x = 4, y = –5, and z = 2. 3x^2 -4y+xza. 12
b. 36
c. 52
d. 76

Answers

3(4)^2 -4(-5) + (4)(2)
= 3(16) + 20 + 8
= 48 + 20 + 8
= 76 (d)

Is the following a relation a function? X Y
1 -2

1 -3

2 1

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Yes or no

Answers

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The Federal Reserve Bank is responsible for minting new coins. True or false

Answers

That's false. Coinage is the responsibility of the US mint.
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Simultaneous Equations
2x+4y=22
2x+2y=15

Answers

Answer:

x = 4

y = $(7)/(2)$

Step-by-step explanation:

Ummmm

I'm not sure if this is corrrect but this is what I got

So first you solve 2x+4y=22 to find x

and you get x = $-2y+11$

Then you have to subtitute $-2y+11$ for $x$ in $2x+2y=15$

which you then get y= $(7)/(2)$

After you have to subttitute y= $(7)/(2)$ for y in x = $-2y+11$

which you get as x=4

Finally you get the answer as:

x = 4

y = $(7)/(2)$

Can I have the formula to solve the algebra problem more easy 56x2+104x+48=0

Answers

$56x^2+104x+48=0\n 7x^2+13x+6=0\n 7x^2+7x+6x+6=0\n 7x(x+1)+6(x+1)=0\n (7x+6)(x+1)=0\n x=-(6)/(7) \vee x=-1$

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