Mathematics, 09.03.2021 20:10 spaigenicole

I really need help and it’s due today! Can someone help please ?

Answers: 2

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Answers

Number 1
a: 2:13
b: 13:8
c: 13:10
d: 2:8
e: 2:10
number2:
12 mole KCIO3 x 3/2= 18 molesO2
number 3:
Moles of Cl2 = 1.0 /71 g/mole= .014 moels x 2/1 = .028 moles x 74.5 g/mol = 2.09 grams
number 4:
Moles of Na2O = 120 g/ 62 g/mol = 1.93 mole x 2/1 = 3.86 moles x 40 g/mol= 154.4 grams NaOH
number 5:
Moles of S8 = 16.0 g/ 256 g/mol= .062 moles x 8/1= .496 moles x 56 g/ mol = 28 g Fe

Answer from: Quest

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

Answer from: Quest

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true

Bwill make the inequalities y < 2x + 1 and y> -x- 2 true. o a. region b o b. region c o c. r

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