All categories

3 years ago

30 Points Solve for x. 8x2−3=2 x=±10√4 x=±10√2 x=±5√2 x=±5√4

Mathematics

1 answer:

ANTONII [103]3 years ago

5 0

Answer:

$x=(+/-)\frac{\sqrt{10}}{4}$

Step-by-step explanation:

we have

$8x^{2}-3=2$

adds 3 both sides

$8x^{2}=2+3$

$8x^{2}=5$

Divide by 8 both sides

$x^{2}=5/8$

square root both sides

$x=(+/-)\sqrt{\frac{5}{8}}\\ \\x=(+/-)\frac{\sqrt{5}}{2\sqrt{2}} \\ \\x=(+/-)\frac{\sqrt{10}}{4}$

You might be interested in

Number 2 and please provide a step by step explanation!!!!

Alekssandra [29.7K]

The number of students in 5th grade is 60, since 24% of 250 is 60.

Since 90 is 38% if 250, 38 is going to be the percent of all students in sixth grade.

20% of 250 is 50, so the percent of all students in seventh grade is 50.

Finally, 45 is 18% of 250, so 18 percent of all students are in eight grade.

Hope this helped :)

8 0

3 years ago

Read 2 more answers

Vivi is a drummer for a band. She burns 756 calories while drumming for 3hours. She burns the same number of calories per hour.

lions [1.4K]

This question uses the concept of the division.

Vivi, the band drummer, burns 765 calories in 3 hours. And she burns these calories at the same rate. Which means she burns the same amount of calories per hour.

Thus, the set up equation for this question will be:

Energy burnt in 3 hours=756 calories

Therefore, Energy burnt in 1 hour = $\frac{756}{3} =252$ Calories.

Thus, the required answer is that Vivi burns 252 Calories of energy per hour while drumming.

7 0

3 years ago

Veronica is self employed. In one year, Veronica generates a gross income of $65,500. When calculating her taxes, Veronica is al

butalik [34]

Answer:

$44,850

Step-by-step explanation:

Gross income is $65,500

Allowable deductions are $2,500

Operating income is $65,500-$2,500=$63,000

From the given tax structure, Veronia will pay 15% for the first $25,000 then 30% for $63,000-$25,000=$38,000

Tax will be (0.15*$25,000)+(0.3*$38,000)=$15,150

Remaining expenses will be $5,500-$2,500=$3,000

Income after tax will be $63,000-$15,150=$47,850

Net income=$47,850-$3,000=$44,850

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Ctext%7BI%20was%20eating%20cookies%20and%20had%20some%20thoughts.%20If%20I%20wanted%20to%20c

andrew-mc [135]

In the attachement, there is what I came up with so far. I think that finding 'a' is non-trivial, if possible at all.

$A_c$ - the area of a circle

$A_{cs}$ - the area of a circular segment

5 0

3 years ago

HURRY PLEASE!!!!

Nitella [24]

Answer:

130

Step-by-step explanation:

3 0

3 years ago