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3 years ago

Solve the equation for x, where x is a real number (5 points): 2x^2 + 8x + 3 = 0

1 answer:

6 0

To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
                                           x = [ -b ± √(b^2 - 4ac) ] / (2a)
                                           x = [ -8 ± √((8)^2 - 4(2)(3)) ] / ( 2(2) )
                                           x = [-8 ± √(64 - (24) ) ] / ( 4 )
                                           x = [-8 ± √(40) ] / ( 4)
                                           x = [-8 ± 2*sqrt(10) ] / ( 4 )
                                           x = -2 ± sqrt(10)/2
The answers are -2 + sqrt(10)/2 and -2 - sqrt(10)/2.

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At a college, the cost of tuition increased by 10%. Let b represent the former cost of tuition. Use the expression b+0.10b for

kirza4 [7]

Question is Incomplete,Complete question is given below;

At a college, the cost of tuition increased by 10%. Let b be the former cost of tuition. Use the expression b + 0.10b for the new cost of tuition.

a) Write an equivalent expression by combining like terms.

b) What does your equivalent expression tell you about how to find the new cost of tuition?

Answer:

a. The equivalent expression is $1.1b$ .

b. The new cost of tuition is 1.1 times the former cost of tuition.

Step-by-step explanation:

Given:

Former cost of tuition = $b$

the cost of tuition increased by 10%.

New cost of tuition = $b+0.10b$

Solving for part a.

we need to find the equivalent expression by combining the like terms we get;

Now Combining the like terms we get;

new cost of tuition = $b(1+0.1) = 1.1b$

Hence The equivalent expression is $1.1b$ .

Solving for part b.

we need to to say about equivalent expression about how to find the new cost of tuition.

Solution:

new cost of tuition = $1.1b$

So we can say that.

The new cost of tuition is 1.1 times the former cost of tuition.

4 0

3 years ago

A concession stand vendor counts the money in the register. after 2 h it has $82.75. after 6 h is has $ 360.75. how much money w

Volgvan

I believe the answer would be c. $499.75. If you take (360.75-82.75)/(6-2) you get 278/4 which is dollars/hour, and that =69.5 so the rate of increase is $69.50 per hour, therefore if 6 hours produced $360.75 then you +$69.50•2(hours) and get $499.75

4 0

3 years ago

Limited mobility may be a disadvantage of buying because the home is _____. a. difficult to get around in b. difficult to sell c

sesenic [268]

B. Difficult To Sell

- Limited Mobility May Be A Disadvantage Of Buying Because The Home Is Difficult To Sell.

6 0

3 years ago

Leveled Practice in 1-4, find the unit rate.

pashok25 [27]

Answer:

13mph

Step-by-step explanation:

you must multiply both fractions by the reciprocal of 1/65 which is 65/1

(1/5 * 65/1) / (1/65 * 65/1)

(65/5) / (65/65)

13/ 1

13/1 = 13

5 0

3 years ago

Write the algebraic expression:<br> Two times a number plus two

Travka [436]

2x+2 would be the expression

4 0

3 years ago

Read 2 more answers