3 years ago

Please help If using the method of completing the square to solve the quadratic equation

Mathematics

1 answer:

Luba_88 [7]3 years ago

4 0

I don’t know I suck at math sadly

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Solve: 12.5 z – 6.4 = –8 z + 3(1.5 z – 0.5)

dolphi86 [110]

Answer:

Step-by-step explanation:

12.5z - 6.4 =-8z + 3(1.5z - 0.5)

12.5z - 6.4 = - 8z + 4.5z - 1.5

12.5z - 6.4 = - 3.5z - 1.5

Bringing like terms on one side

12.5z + 3.5z = - 1.5 + 6.4

16z = 4.9

z = 4.9/16

6 0

3 years ago

So I kinda forgot how to do this *nervous laughter* um help

natali 33 [55]

1) value of x =60

2) value of x = 3

Step-by-step explanation:

We need to use cross products to solve the proportions of x.

$1.\,\, \frac{3}{5}= \frac{x}{100}$

Solving:

$\frac{3}{5}= \frac{x}{100}\\Cross\,\,multiply\,\,:\\5x=3*100\\5x=300\\x=\frac{300}{5}\\x=60$

So, value of x =60

$2.\,\,\frac{x}{8}=\frac{7.5}{20}$

$\frac{x}{8}=\frac{7.5}{20} \\20x=7.5*8\\20x=60\\x=\frac{60}{20}\\ x=3$

So, value of x = 3

Keywords: Ratio and Proportions

Learn more about Ratio and Proportions at:

#learnwithBrainly

7 0

3 years ago

What is 1/100 of 605 feet

slamgirl [31]

1/100 of 605 is 6.05 because you divide 605 by 100

7 0

3 years ago

What is the distance between points A(2,9) and B(-2,6)? Round to the nearest whole number.

Sati [7]

Answer:

The answer is 5

Step-by-step explanation:

Use pythagorean theorem. $\sqrt{3^{2}+ 4^{2} } =5$

7 0

3 years ago

Solve for Y I need help please

muminat

Bring y to one side and the rest to the other switching the positives to negative then you’ll get Y=114

6 0

3 years ago

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