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2 years ago

What is the x-intercept of the graph? -3-226

Mathematics

1 answer:

klemol [59]2 years ago

5 0

I will mark brainlist please help

1) What is the concentration of a solution that contains 6 moles of solute in 2 liters of solution

• 6M

• 12M

• 7M

• 3M

2) what is the number of moles of solute in 250 mL of a 0.4M solution?

• 0.1 mol

• 0.16 mol

• 0.62 mol

• 1.6 mol

3) the molality of a solution containing 8.1 moles of solute in 4847 g of solvent is

• 39m

• 1.7m

• 0.17m

• 598m

4) which of the following is unchanged when a solution is diluted by addition of solvent?

• volume of solvent

• mass of solvent

• number of moles of solute

• molarity of solution

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Which statement about rhombuses and parallelograms is true?

puteri [66]

Answer:

Parallelograms ALWAYS have opposite sides parallel; rhombuses sometimes do not.

Step-by-step explanation:

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3 years ago

Identify the slope and y-intercept of the line x + 3y = -18.

Dmitry [639]

Answer:

Slope: -1/3

Y-intercept: -6

Step-by-step explanation:

x + 3y = -18

x+18 = 3y

-3y/-3 = x/-3+18/-3

y = -1/3x - 6

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3 years ago

Working together, Candice and Ximena painted a fence in 8 hours. Last year, Ximena painted the fence by herself. The year before

makkiz [27]

Answer: Time taken by Ximena to paint the fence alone = 24 hours

Time taken by Candice to paint the fence alone = 12 hours

Step-by-step explanation:

Let x= Time taken by Ximena to paint the fence alone .

Time taken by Candice to paint the fence alone = x-12

As per given , we have

$\dfrac{1}{x}+\dfrac{1}{x-12}=\dfrac{1}{8}\\\\\Rightarrow\ \dfrac{x-12+x}{x(x-12)}=\dfrac{1}{8}\\\\\Rightarrow\ 8(2x-12)=x^2-12x\\\\\Rightarrow\ 16x-96=x^2-12x\\\\\Rightarrow\ x^2-12x-16x+96=0\\\\\Rightarrow\ x^2-28x+96=0\\\\\Rightarrow\ x^2-4x-24x+96=0\\\\\Rightarrow\ x(x-4)-24(x-4)=0\\\\\Rightarrow\ (x-4)(x-24)=0\\\\\Rightarrow x=4, 24$

if x= 4

Time taken by Ximena = 4 hours

Time taken by Candice = 4-12 hours =-8 hours which is not possible. (time cannot be negative)

Therefore, x= 24

Such that

Time taken by Ximena to paint the fence alone = 24 hours

Time taken by Candice to paint the fence alone = 24-12=12 hours

3 0

3 years ago

Fill in the integers -10, -8, -7, -6, -5, -4, -3, -2 and 0 into a magic square so that every row, column, and diagonal has a sum

ioda

-2 -10 -3

-7 0 -8

-6 -5 -4

That's the square, it was a fun puzzle :)

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2 years ago

sal makes a 10% commission on the first $5000 of sales and 15% on any sales over $5000. find his total graduated commission on $

Helga [31]

0.10(5000) = 500
0.15(10,000) = 1500

total commission on 15,000 = (150 + 500) = 2,000

5 0

3 years ago

What is the x-intercept of the graph? -3-226​

What is the x-intercept of the graph? -3-226