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2 years ago

Plz helpppp I will give the brainliest help me plz

Mathematics

1 answer:

Mrrafil [7]2 years ago

8 0

Answer:

Step-by-step explanation:

Let the original quantity of marbles of the bag be y.

$\frac{2}{3} (\frac{1}{2} )y=12$

y=36

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Maria needs to buy 12 wine glasses. write an expression of the cost of 12 glasses at p dollars each.

irinina [24]

12p thats it because you are buying 12 glasses a the cost of p example 12 glasses for 5 dollars would be 12(5)=60

5 0

3 years ago

Solve for x in the equation.

labwork [276]

Answer:

The solution is $\displaystyle x=1\pm \sqrt{47}$ . Fourth option

Explanation:

Solve for x:

$2x^2+3x-7=x^2+5x+39$

Move all the terms from the right to the left side of the equation, a zero in the right side:

$2x^2+3x-7-x^2-5x-39=0$

Join all like terms:

$x^2-2x-46=0$

The general form of the quadratic equation is:

$ax^2+bx+c=0$

Solve the quadratic equation by using the formula:

$\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

In our equation: a=1, b=-2, c=-46

Substituting into the formula:

$\displaystyle x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(-46)}}{2(1)}$

$\displaystyle x=\frac{2\pm \sqrt{4+184}}{2}$

$\displaystyle x=\frac{2\pm \sqrt{188}}{2}$

Since 188=4*47

$\displaystyle x=\frac{2\pm \sqrt{4*47}}{2}$

Take the square root of 4:

$\displaystyle x=\frac{2\pm 2\sqrt{47}}{2}$

Divide by 2:

$\displaystyle x=1\pm \sqrt{47}$

First option: Incorrect. The answer does not match

Second option: Incorrect. The answer does not match

Third option: Incorrect. The answer does not match

Fourth option: Correct. The answer matches exactly this option

8 0

2 years ago

How can you tell if a situation is linear from a table?

monitta

Answer:

Step-by-step explanation:

If each successive y value is the same distance above the previous y value, the situation is linear.

4 0

2 years ago

Read 2 more answers

19 hundred-thousandths19

Rama09 [41]

Answer:

.00019

Step-by-step explanation:

.00019

first 0: tenths

2nd 0: hundredths

3rd 0: thousandths

4th 1: ten thousandths

5th 9: hundred thousandths

8 0

2 years ago

50 POINTS & BRAINLIEST!!!! HELP ASAP!!!

Allisa [31]

6(2x - 11) + 15 = 21

First step use distributive property on the left side to remove the parenthesis, to do this multiply 6 by each term inside the parenthesis:

12x - 66 + 15 = 21

Second step, simplify the left side by combining the like terms:

12x - 51 = 21

Third step, add 51 to both sides of the equation:

12x = 72

Last step, divide both sides by 12:

x = 72/12

x = 6

3 0

2 years ago