2x^2+3x-7=0
[tex] 2x^{2} + 3x - 7 = 0[/tex]

Answers

Answer 1

Answer:

x = [tex]\frac{-3\pm\sqrt{65} }{4}[/tex]

It is written like this in latex code: $\frac{-3\pm\sqrt{65}}{4}$

Step-by-step explanation:


Related Questions

Write an equation that represents the line (use exact numbers

Answers

Answer:

(0,2) and (3,-1)

Step-by-step explanation:

Answer:

Step-by-step explanation:

(0,2) ; (3 , -2)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]

         [tex]= \frac{-2-2}{3-0}\\\\= \frac{-4}{3}\\\\[/tex]

m = (-4)/3 ; (0 , 2)

y -y1 =m(x -x1)

[tex]y - 2 = \frac{-4}{3}(x-0)\\\\y -2 = \frac{-4}{3}*x\\\\ y = \frac{-4}{3}x + 2[/tex]

Which of the following trigonometric functions would you use to find the value of x?

a. cos
b. tan
c. sin

Answers

the answer is c. sin
You would use tangent (opposite/adjacent) because the opposite side is 4 and the adjacent side is x

tan(41) = 4/x
4 * tan(41) = x
3.48 = x

1695 concert tickets were sold for a total of $11.190. If students paid $5 and nonstudents paid $8, how many student tickets were sold? ​

Answers

x- students, y-non students

x+y=1695
5x+8y=11,190

8x+8y=13560
5x+8y=11,190

3x= 2370

x= 790

Answer: 790 student tickets
I agree with the person on top have a beautiful day:)

2. 0.66 + 0.03 =
what is the answer with shown work​

Answers

Answer:

just add 0.66 and 0.03 and you should get 0.69.

Step-by-step explanation:

A box in a supply room contains 21 compact fluorescent lightbulbs, of which 7 are rated 13-watt, 8 are rated 18-watt, and 6 are rated 23-watt. Suppose that three of these bulbs are randomly selected. (Round your answers to three decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 23-watt

Answers

Answer:

The probability that exactly two of the selected bulbs are rated 23-watt is:

= 19%

Step-by-step explanation:

Number of fluorescent light bulbs in the box = 21

7/21 = 13-watt rated light bulbs

8/21 = 18-watt rated light bulbs

6/21 = 23-watt rated light bulbs

The probability of selected a 23-watt rated light bulb = 6/21 = 28.57%

Size of random selection of bulbs = 3

The probability that 2 out of these 3 bulbs are 23-watt rated light bulbs is:

= 6/21 * 2/3 = 19%

b) The probability of selecting 2 of the 3 bulbs from exactly the 23-watt rated bulbs is the probability of the 23-watt rated bulbs being selected given the chance of selecting 2/3.

the width of a rectangle is half its length. the perimeter is 36 inches. whar are the dimensions of the rectangle

Answers

Width of a rectangle is half its length:
2w = l
Perimeter is 36
2w + 2l = 36

Plug first equation into second (substitution)

2w + 2(2w) = 36
2w + 4w = 36
6w = 36
w = 6

Plug back into first equation to solve for l

2(6) = 12 = l

Mn bisects jl at k if jk= x-3 and kl=13-3x

Answers

Answer:

138

Step-by-step explanation:

4, 50% markdown on $18.50)

Answers

$9.25 Explanation: $18.50 minus 50% off is $9.25

Let f be a function for a recursive sequence where the rule f(n + 1) = f(n) + f(n – 1)determines the (n + 1)th term. Given this and the first two terms of the sequence, select each number that is also a term of the sequence.
1,1,...

A.2
B.3
C.4
D.5
E.7
F.9
G.12
H.17
I.21

Answers

Answer:

h because

Step-by-step explanation:

is (-2,-4) a solution of the graphed inequality?

Answers

Answer:

Yes

Step-by-step explanation:

The inequality is y<-3x+4

If you plug in (-2, -4), you get:

-4<-3(-2)+4

-4<10

So the point satisfies the equation.

The sales tax on a surfboard is $12. What is the percent of sales tax? the surfboard is $240

Answers

Answer:

5%

Step-by-step explanation:

I went on M a t h w a y  which is an app where it only takes 2.5 seconds to answer your question with real teachers

Answer:

5%

Step-by-step explanation:

225x=12

divide 225 on both sides to get

0.05

Now convert into a decimal by moving two spaces to the right

then you get 5%

Can someone please help me with this

Answers

sorry but where is Elisa's explanation???

Quick 2 mins tell due 500÷30+200 decimal answer needed​

Answers

[tex]500/30+200=16.\bar{6}+200=216.\bar{6}[/tex]

uppose that a single die with 8 sides (numbered 1, 2, 3, ... , 8) is rolled twice. What is the probability that the sum of the two rolls equals 5

Answers

Answer:

1/16 = 0.0625 = 6.25% probability that the sum of the two rolls equals 5.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Die with 8 sides

This means that the total number of outcomes is [tex]T = 8^2 = 64[/tex]

Outcomes in which the sum of the two rolls is 5:

(1,4), (4,1), (2,3), (3,2)

4 desired outcomes, so [tex]D = 4[/tex]

What is the probability that the sum of the two rolls equals 5?

[tex]p = \frac{D}{T} = \frac{4}{64} = 0.0625[/tex]

1/16 = 0.0625 = 6.25% probability that the sum of the two rolls equals 5.

The probability that the sum of the two rolls equals 5 is 1/16

What is probability

Probability is the likelihood or chance that an event will occur.

Probability = Expected outcome/Total outcome

Given a single die with 8 sides (numbered 1, 2, 3, ... , 8) is rolled twice, the total outcome will be:

Total outcome = 8^2

Total outcome = 64

For the sum of two rolls, the expected outcome will be:

E = {(1, 4), (4, 1), (3, 2), (2, 3)}

n(E) = 4

Pr(sum of the two rolls is 5) = 4/64

Pr(sum of the two rolls is 5) = 1/16

Hence the probability that the sum of the two rolls equals 5 is 1/16

Learn more on probability here; https://brainly.com/question/24756209

Lucy has 18 pencils. Lucy has 2 more than 4 times the
pencils that Alex has. How many pencils does Alex
have?

Answers

Answer:

Alex has a pathetic 4 pencils, everybody laugh at Alex, Lucy supremacy!

Step-by-step explanation:

Factor each completely! NEED THIS ASAP!

Answers

Answer:

4) k(7k+9)

5) (x+5)(x-5)

Step-by-step explanation:

4) k(7k+9)

5) (x+5)(x-5)

solve y = -25x + 600

Answers

Answer:

[tex]-\frac{y}{25} +24[/tex]

Step-by-step explanation:

.

Rick buys a remote control car for $25.00 what is his selling price. Markup 19%

Answers

Answer:

The selling price is $29.75

Step-by-step explanation:

19% of 25 is 4.75. So you would need to add the 4.74 to the $25 for the sale price.

Hope this helped :)

If it did please leave a good rating :)

I just need help on the problem.

Answers

Answer:

choice #2) 2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

When f (x axis) is 6, look at the y intercept and the value is 2

Can someone help me with my ela assignments plss I need a good grade I’ll pay u 20$ if it’s right

Answers

umm... sure but like where's the question?

Carissa has a 30-year, 5.75% mortgage on her $250,000 home. She has been
paying on it for 5 years, and has recently hit some financial trouble. If her
lender agreed to lower the interest rate on her $231,905.47 balance to 5.25%,
what will her new payment be for the remainder of the loan?
A. $1389.69
B. $1333.09
C. $1330.20
D. $1432.09

Answers

Answer:

A. $1389.69

Step-by-step explanation:

To calculate the new monthly mortgage payment that Carissa will start paying going forward, we use the formula for calculating monthly mortgage payments.

The formula is:- M = P { [r ( 1+ r)^n] ÷ [ ( (1+r)^n) -1] }

Here, M is the monthly mortgage payment.

P is the principal

r is the monthly interest rate calculated by dividing your annual interest rate by 12

n is the number of payments(the number of months you will be paying the loan).

Hence, the new principal that Carissa must payback is $231,905.47¢.

The annual interest rate has been reduced to 5.25% from 5.75%.

Therefore, the new monthly interest rate will be obtained by dividing the new annual interest rate by 12

= 5.25%/2

= 0.438%

This is the new monthly interest rate.

Since she has been paying her mortgage loan diligently for 5 complete years. It means she now has just 25 years to complete the payment. If 12 months make up one year, then there are - 12 × 25 = 300 more months to go.

300 is, therefore "n" that is required for the calculation.

All the terms needed for the calculation of her new monthly mortgage are now complete.

P = $231,905.47¢

r = 0.4375%

n = 300

M = 231,905.47 { [0.004375 (1+0.004375) ^300] ÷ [ ( (1+0.004375) ^ 300 ) - 1] }

= 231,905.47 { [ 0.004375 (3.7048) ] ÷ (2.7048) }

= 231,905.47 × 0.005992

M = $1,389.69

Therefore her new monthly mortgage payment will become $1,389.69

Answer: $1389.69

Step-by-step explanation:

There once was a student named chandler. In 5 minutes, chandler texted 435 words. At the rate how many words did chandler text per minute ?

Answers

Answer:

87

Step-by-step explanation:

18 The sides of an isosceles triangle are measured correct to the nearest millimetre.
One side has a length of 8.2 cm and another has a length of 9.4 cm.
Find the largest possible value of the perimeter of this triangle.​

Answers

Answer:

Step-by-step explanation:

largest perimeter=9.4+9.4+8.2=27.0 cm

or it can be  one side=82.4 mm

other sides =94.4 mm

largest perimeter=94.4+94.4+82.4=271.2 mm=27.12 cm

Annabelle just answered a help-wanted ad. The ad states that the job
pays $48K annually. What would Annabelle's monthly salary be if she gets
this job?

Answers

Answer:

$4,000

Step-by-step explanation:

$48,000 ÷ 12 months = 4,000

a number has the same digit in it's hundreds place and it's hundredths place. How many times greater is the value of the digit in the hundredths place than the value of the digit in the hundredths place?​

Answers

Answer:

3 times

Step-by-step explanation:

Zoe, with 7 yellow aliens
and 5 blue spiders scored 85 points: James, with 6 yellow aliens and 11 blue spiders scored 93 points.
Hal had 8 yellow aliens and 1 blue spider.
How many points did Hal score?

Answers

83:)
An alien is worth 10 points and a spider is worth 3!
It’s easily worked out with simultaneous equations!

Ava poured 3 gallons of paint equally into 5 cans. How many gallons of paint will there be in each can

Answers

Answer:

0.6 gallons/can

Step-by-step explanation:

Simply divide the gallons of paint by the number of cans:

[tex]\frac{3-gallons-of-paint}{5-cans}[/tex] = 0.6 gallons/can

Answer:

0.6 is the correct answer

Graph the inequality x-2y>4

Answers

Answer:

The answer is y < −2 + x/2 and the graph above if that's what ur looking for.

Answer choices:

–7
–12
0

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Graphs and plots,

since the given equation is a parabolic equation graph, hence we substitute every value to get the value of variable y.

1.) if x = -5 ,then 25-30-7 => y = -12

2.) if x = -1 , then 1-6-7 => y = -12

3.) if x = -6 , then 36 -36 -7=> y = -7

4.) if x = 0 , then 0+0-7 => y = -7

hence all values are proved above

James bought 6 cupcakes and a pint of ice cream. He knows his total bill and the pint of ice cream was $5.76, but
he wants to find the price of the cupcakes. How can he determine the price of each cupcake? If the total bill was
$22.26, how much was each cupcake?

Answers

Answer:

Each cupcake was $2.75

Step-by-step explanation:

We subtract the price of the ice cream from the total bill $22.26-$5.76=$16.50

We know he only bought the ice cream and cupcakes so once we subtracted the price of the ice cream, we now have the price of the cupcakes all together only

We divide the price of all the cupcakes by the amount of cupcakes to get the price of each individual cupcake $16.50/6=$2.75

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