MATHEMATICS HIGH SCHOOL

Solve for y.-5y - 9 = -(y - 1)

Answer choices:
a. -1/2
b. -2 1/2
c. -2
d. -2/5

I am brain-dead. :|

Answers

Answer 1
Answer: -5y - 9 = -(y - 1)

First, simplify your brackets. / Your problem should look like: -5y - 9 = -y + 1
Second, regroup the terms. / Your problem should look like: -5y - 9 = 1 - y
Third, add 5y to both sides. / Your problem should look like: -9 = 1 - y + 5y
Fourth, simplify 1 - y + 5y to 1 + 4y. / Your problem should look like: -9 = 1 + 4y
Fifth, subtract 1 from both sides. / Your problem should look like: -9 - 1 = 4y
Sixth, subtract -9 - 1 to get -10. / Your problem should look like: -10 = 4y
Seventh, divide both sides by 4. / Your problem should look like: -(10)/(4) = y
Eighth, simplify (10)/(4) to (5)/(2) / Your problem should look like: - (5)/(2) = y
Ninth, switch your sides. / Your problem should look like: y = -(5)/(2)

Answer: y = -(5)/(2)
Answer as decimal: y = -2.5
Answer 2
Answer:

Answer:

y = -2(1)/(2)

Step-by-step explanation:

-5y - 9 = -(y - 1)

-5y - 9 = -y + 1

-5y + y = 1 + 9

-4y = 10

(-4y)/(-4) = (10)/(-4)

y = -2(2)/(4) Simplify

y = -2 (1)/(2)

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Solve.

√(x-1)+3=x

Answers

√(x-1)+3=x;\ Domain:x-1\geq0\ \wedge\ x\geq3\to x\geq1\ \wedge\ x\geq3\nD:x\in[3;\ \infty)\n\n√(x-1)=x-3\ \ \ \ |square\ both\ sides\n\nx-1=(x-3)^2\ \ \ \ |use\ of\ the\ formula:(a-b)^2=a^2-2ab+b^2\n\nx-1=x^2-6x+9\n\nx^2-6x+9=x-1\n\nx^2-6x-x+9+1=0\nx^2-7x+10=0\ \ \ \ |use\ quadratic\ formula

a=1;\ b=-7;\ c=10\n\n\Delta=b^2-4ac\to\Delta=(-7)^2-4\cdot1\cdot10=49-40=9\n\nx_1=(-b-\sqrt\Delta)/(2a);\ x_2=(-b+\sqrt\Delta)/(2a)\n\n\sqrt\Delta=\sqrt9=3\n\nx_1=(7-3)/(2\cdot1)=(4)/(2)=2\notin D\n\nx_2=(7+3)/(2\cdot1)=(10)/(2)=5\in D\n\nSolution:x=5
√(x-1)+3=x\n √(x-1)=x-3\n D:x-1\geq0 \wedge x-3\geq0\n D:x\geq1 \wedge x\geq3\n D:x\geq3\n x-1=(x-3)^2\n x-1=x^2-6x+9\n x^2-7x+10=0\n x^2-2x-5x+10=0\n x(x-2)-5(x-2)=0\n (x-5)(x-2)=0\n x=5 \vee x=2\n 2\not \in D \Rightarrow x=5

which algebraic expression has a term with. a coefficient of 9. A. 9x/6. B. 6x-9. C. 6+x-9. D. 6(x+5)

Answers

Answer:

(9x)/(6).

Step-by-step explanation:

Given : Algebraic expressions.

To find : Which algebraic expression has a term with. a coefficient of 9.

Solution : We have given algebraic expressions.

Coefficient : A numerical or constant quantity placed before and multiplying the variable in an algebraic expression

Example : 4x² + 3x + 2 = 0

Here, 4 is coefficient of x² , 3 is coefficient of x .

Then we can see 9 is coefficient of (9x)/(6).

Therefore, (9x)/(6).
The first term A. "9x/6" has a coefficient of 9. A coefficient is the number in front of the variable in an expression.

I hope this was helpful.

Give the digits in the ones place and the tenths place.
86.59

Answers

Digit in ones place- 6
Digit in tenths place- 5

Fraction: least to greatest...

2/3, 9/16, 0.52

Answers

The answer is .52 9/16 2/3
Your answer is: 0.52, 9/16, 2/3.  Those are your answers.

what is 1,112,433 rounded to the nearest ten thousand a.1,120,000 b.1,200,000 c.1,100,000 d.1,110,000

Answers

the correct answer is d. 1,110,000

Brad spent 20 percent of his money to buy a car costing £6800 how much did he havePlease reply asap

Answers

He had 34000 euros total.  Divide 6800 by 0.2 (AKA 20%)
There are few ways but i prefere this way:

100/20=5
6800*5=?
6000*5=30000
800*5= 4000
+-----------
= 34000

=£34000
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