What is the solution of the quadratic equation 2x2 + 5x – 1 = 0? Solve by using the quadratic formula.

Answers

Answer 1

Answer:

x=  

4

−5+  

33

​    

4

−5−  

33

​  

 

​  

 

Step-by-step explanation:


Related Questions

Solve for x. Assume that lines that appear tangent are tangent.
A. 18.75
B. 8
C. 13
D. 12

Answers

Answer:

it A

Step-by-step explanation:

The value of x in the circle is 13.

Option C is the correct answer.

What is a circle?

A circle is a two dimensional figure with a radius and circumference of 2pir.

The area of a circle is πr².

We have,

A chord is a line segment connecting two points on a circle.

A chord is different from a diameter, which is a chord that passes through the center of the circle.

The chords in a circle are all the same with the same length.

From the given diagram,

There are two chords.

This can be written as:

(15 + 8) = 23 makes one chord.

(10 + x) makes one chord.

Now,

23 = 10 + x

Solve for x.

23 = 10 + x

23 - 10 = x

x = 13

Thus,

The value of x in the circle is 13.

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Ben divided an irregular region into rectangles to help determine its area.
10 cm
8 am
14 cm
7 cm
6 cm
15 cm
What is the total area of the figure?

Answers

Answer:

The total area of the figure is equal to 705600

PLEEASE HELP 30 POINTS

Answers

Answer:

62°

Step-by-step explanation:

m L 6 = m L 8 (same facing of) = 62°

SOMEONE HELP ME PLEASE!!!!

Answers

Answer:

a.220 ,

Step-by-step explanation:

I really don't know how I'ma gonna explain , I gave to type so that it can send sorrrryyy

The answer is A, to your question

The formula for the perimeter, P, of a rectangle is P = 2(l + w), where l represents the length and w represents the width.
A. Todd has a string that is 26 inches long and wants to create a 9-inch-long rectangle with it. Substitute these values into the formula above, and solve for w to determine how wide Todd’s rectangle must be. Show your work.

B. Todd solved for the width arithmetically, as follows:

The length of the rectangle is 9 inches, so the sum of the lengths of the two long sides is 2 • 9 = 18 inches.

The string is 26 inches long, and 18 inches are used for the long sides of the rectangle, so the number of inches available for the short sides is 26 − 18 = 8 inches.

A rectangle has 2 congruent short sides, so the length of each short side, or the width of the rectangle, is 8 ÷ 2 = 4 inches.

Describe how Todd’s arithmetic solution process is similar to your algebraic solution process from part A, and how they are different.

C. The perimeter formula can be solved for w, in terms of P and l, as shown below.

P = 2(l + w)

P = 2l + 2w

P − 2l = 2w

= w

Explain why it could be useful to solve the perimeter equation for w in terms of P and l.

Answers

Answer:

p= 2L + 2w

p= 2×26 + 2×9

35-52=18

w=35

what is the slope of this line?​

Answers

Answer:

=5/3

Step-by-step explanation:

slope= y2-y1/X2-X1

=(1,1) (-2,-4)

=(-4-1/-2-1)

=-5/-3

=5/3

345 x 326 = ?
Help me pls

Answers

Answer:

112,470 your welcome : )

.
Use the function to find y when x = 3.

y = 2x


a. 6

b. 5

c. –1

d. 3/2
Pls help me am on a test :-)

Answers

Answer:

x=3

y=2x

y= 2×3

y=6

option a is the answer

The answer is 6! Multiply 2 x 3 because x = 3 and you will get 6, which is y.

Please help I’ll make you the brainiest

Answers

Answer:

I feel like it's B

Step-by-step explanation:

On Sunday, Sam walked to the hardware store and decided to buy a saw for $12.53 . Sam handed the salesperson $12.88 for his purchase. How much change did Sam receive?

Answers

Answer:

i need this too so any body that knows it plz help

i am not that good at math but this is the answer i got that changed

12.36 i really really hope it helped ;) have a nice day

[tex]5+\frac{x}{2} \geq 10[/tex]

Answers

X would be greater than or equal to 9

Which expression matches the graph?

A. n< 1
B. n> 1
OC. ns1
D. n=1
Ε. η Σ1

Answers

Answer:

c.

Step-by-step explanation:

[tex]n \leqslant 1[/tex]

Pakistan scored 270 runs and fell short by India’s score by 10%. How much did India score

Answers

India's score is 300 and pak's is 270

Answer please if you will

Answers

Answer:

14 - 4x = 26

-14          -14

-4x = 12

Divide by -4 on both sides

x = -3

x + 18/4 = 5

x4           x4

18 + x = 20

-18         -18

X = 2

20x - 2 = 8

+2          +2

20x = 10

Divide by 20 on both sides

X = 0.5

1 + 33x = 12

-1             -1

33x = 11

Divide by 33 on both sides

x = 0.3

Which of the following is a right triangle in the diagram

Answers

Answer:

All of the above

Step-by-step explanation:

Matt has 5 Cookies
Linn eats 3 of the cookies
How old is Linn

Answers

Answer:

3

Step-by-step explanation:

Where did you get this question?

The number of cookies left, if Matt has 5 Cookies and Linn eats 3 of the cookies, is 2.

What is subtraction?

The action of subtracting a matrix, vector, or other quantity from another according to predetermined rules in order to find the difference.

Given:

The total number of cookies, t = 5,

The number of cookies Linn eats, n = 3,

Calculate the number of cookies left by using subtraction as shown below,

The number of left cookies = Total number of cookies - The number of cookies Linn eats

The number of left cookies = t - n

The number of left cookies = 5 - 3

The number of left cookies = 2

Thus, the number of cookies left is 2.

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The complete question is: Matt has 5 Cookies and Linn eats 3 of the cookies, how many cookies are left?

Graham carves a block of wood shaped like a cube with a square pyramid on top. What is the surface area of the toy?

Answers

Answer:

1080 cm²

Step-by-step explanation:

Surface area pyramid shape = 2(15*12) = 360

Surface area cube = 5( 12 x 12) = 720

360 + 720 = 1080 cm²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

You have completed various experiments with both 50 and 80 kg masses. If you were to complete the above simulation with a 150 kg mass, how much force would be required to move the load?

Answers

Answer:

20

Step-by-step explanation:

if you already completed various experiments with 50 and 80, add those 2 and you get 130. Then just subtract 150 and 130 and you should get 20.

please let me know if this is correct, i didn't really understand the question that well but this is what seems correct from the way i am looking at it.

hope this helps!!

what is this Help plz !

Answers

24 square units is the answer

Please answer this, I've asked before but someone just took my points without answering and I really need the answer

Answers

Answer:

I think the answer is 45 but that may be wrong


In the figure at right, BC = 10. Find AC.

Answers

Answer:

i dont know

Step-by-step explanation:

Step-by-step explanation:

angle(A+B+C)=180°{sum of angle of triangle}

C=180°-135°

C=45°

now,

sin theta=p/h

sin 45°=10/AC

1/√2=10/AC

AC=10√2

Ac=14.14

stay safe healthy and happy.

a park ranger measures the heights in the box plot​​

Answers

Answer:

The answer is c because 5 is not dotted anywhere?????

1. What is the length of the missing side?
42 mm
56 mm
C?
What is the length of the hypotenuse?
C=
millimeters

Answers

Answer:

70 mm

Step-by-step explanation:

Use PYTHAGOREAN THEOREM: a^2+b^2=c^2

42^2 + 56^2 = c^2

1764 + 3136 = c^2

4900=c^2

square root of 4900 is 70

so, the final answer is 70 mm

42^2+56^2=c^2
1764+3136=c^2
4900=c^2
Square root of 4900 is 70
Answer:70

Please help I will mark as brainliest!!

Answers

Answer:

117°

Step-by-step explanation:

x= 180-101+38= 117°

Four streets feed into a roundabout circle as shown below. If the diameter of the
roundabout is 130 feet, find the approximate distance a car will travel between Cole Street and Maple Street along the roundabout (take the shorter route from Cole to Maple).

98.5 ft

125.9 ft

119.1 ft

107.2 ft

Answers

Answer: 119.1ft............

3+4x+x^2 = y Given x = 1

Answers

Answer:

8

Step-by-step explanation:

Which of the following is the equation for the graph shown?
x^2/25-y^2/16=1
x^2/16-y^2=1
y^2/16-x^2/25=1
y^2/25-x^2/16=1​

Answers

Therefore , the solution of the given problem of equation comes out to be [tex]x^{2}[/tex]/16-  [tex]y^{2}[/tex] =1.

Explain equation.

An equation is a mathematical representation of two equal variables, one on each side of a "equals" sign. Everyday issues can be resolved with equations. We commonly look for pre algebra help to deal with problems in real life. Pre-algebra is the fundamental foundation of mathematics.

Here,

Given : Some of the equations

[tex]x^{2}[/tex]/25-[tex]y^{2}[/tex]/16=1

[tex]x^{2}[/tex]/16-  [tex]y^{2}[/tex] =1

[tex]y^{2}[/tex]/16-[tex]x^{2}[/tex]/25=1

[tex]y^{2}[/tex]/25-[tex]x^{2}[/tex]/16=1​

We have to find the correct equation which represents the below graph.

So ,

In order to find the equation :

We,

Put the values in the equations x = -4 and y = 0:

Thus ,

equation :

[tex]x^{2}[/tex]/16-  [tex]y^{2}[/tex] =1

Represents the graph as x = -4 and y = 0 values satisfy the equation.

Therefore , the solution of the given problem of equation comes out to be [tex]x^{2}[/tex]/16-  [tex]y^{2}[/tex] =1.

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The radius of a circle is 12 in. Find its circumference in terms of
π
π.

Answers

Answer:

It would be 24(π)

Step-by-step explanation:

This is due to the circumfenrece equation for a circle being (π)D, with D as the diameter which is 2x the radius, so 12x2=24.

After this, it is 24(π), though leave it at there since it is meant to be written in terms of it. You're now done!

Answer:

75.4 in. ???

Step-by-step explanation:

Come back if its not correct.

HELP ME !!!!!! A: 7/100 0.07
B: 1/10; 0.1
C: 73/100 0.73
D 73/10; 7.3

Answers

Answer:

Step-by-step explanation:

i say d but i'm not fully sure

$600 at 4% for 9 months. ​

Answers

It’s like 24 if your asking how much 4% of 600 is.

The simple interest for the principal amount of $600 at the rate of 4% for 9 months will be equal to $216.

What is Simple interest?

A quick and simple way to figure out interest on that money is to use the simple interest approach, which adds interest at the same rate for each daily cycle, and it is to the initial principal amount. A way to figure out how much interest will be charged on an amount of money at a specific rate and for a specific duration of time is by using simple interest.

As per the given information in the question,

Principle amount, P = $600

Time, T = 9 months

Rate, R = 4%

SI = (600 × 9 × 4)/100

SI = $216.

The SI will be $216.

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