Can you help me with this question? :)

Can You Help Me With This Question? :)

Answers

Answer 1

Answer:

Step-by-step explanation:

2x^2+5x-4=0

x = [-5 ± √(5^2-4(2)(-4))]/[2(2)]

= [-5 ± √57]/4

= -1.25+0.25√57, -1.25-0.25√57


Related Questions

in triangle ABC the measure of angle a is 60 angle b is 60 what is angle c?​

Answers

Answer:

60

Step-by-step explanation:

[tex]180 - 2(60) = 60[/tex]

Answer:

60°

Step-by-step explanation:

A triangle with two 60° angles has another 60° because 180-(60+60)=180-120=60°.

Also, this is an equilateral triangle.

x²-7x+14 what is the answer?

Answers

Answer: X intercepts none Y intercepts (0,14)

Step-by-step explanation:

Two-thirds of a number plus 5 is greater than 12. Find the number.

Answers

Answer: Any number that is greater than 10.5

Explanation: 10.5 • 2/3 + 5 = 12

Solve the two-step equation. 14=31.7-3x

Answers

Answer:

x=5.9

Step-by-step explanation:

First, you want to isolate x so you have to subtract 31.7 from both sides. This will make the equation -3x=-17.7. Because they are both sides are negative, you can change both sides to positive so it will be 3x=17.7. Next, you want x to be 1 so you have to divide 3 in both sides. This will make the equation x=17.7/3. Simplify that to get x=5.9.

If this has helped you, please mark as brainliest.

Answer:

1203.3734754701242754528955797863116165046

HELP ME ASAP PLEASE
Solve algebraically:
—3e^7x+9 = –12

Answers

Answer:

exact form: is 7/7e and decimal form: it is 0.00638317...

Step-by-step explanation:

d o not know step by step can you help me

Work out 5 3/4 - 2 1/4

Answers

Answer:

[tex]3\frac{1}{2}[/tex]

Step-by-step explanation:

[tex]5\frac{3}{4} -2\frac{1}{4} =3\frac{2}{4} =3\frac{1}{2}[/tex]

The answer is 14/4 or 3 2/4

5 3/4 = 23/4
2 1/4 = 9/4
23/4 - 9/4 = 14/4 or 3 2/4


Roxanne buys an apple tart during the sale. If the original price was $20, how much does
Roxanne pay?
Sale! 25% OFF
of the original price!

Answers

$15 is the answer hope this helps
Lol why you keep posting this

Nicholas has a pepper shaker in the shape of a cylinder. It has a radius of 9 mm and height of 32 mm. How much pepper will for in the shaker

Answers

By using the fοrmula fοr the vοlume οf a cylinder, the pepper shaker can hοld apprοximately 8,159.15 cubic millimetres οf pepper.

What is the vοlume οf a cylinder ?

The fοrmula tο calculate the vοlume οf a cylinder:

V = πr²h

where:

V = vοlume

r = radius

h = height

Tο calculate the vοlume οf the pepper shaker, we need tο use the fοrmula fοr the vοlume οf a cylinder.

In this case, we have:

r = 9 mm

h = 32 mm

Sο the fοrmula becοmes:

V = π(9 mm)²(32 mm)

V = π(81 mm²)(32 mm)

V = 81π(32) mm³

V ≈ 8,159.15 mm³

Therefοre, the pepper shaker can hοld apprοximately 8,159.15 cubic millimeters (οr milliliters) οf pepper.

To know more about cylinders visit:

brainly.com/question/1744442

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2x+y=40 kx+2y=80


A system of equations is shown, where k is a constant. If the lines represented by the equations in the system are graphed in the xy-plane, for what value of k would the lines coincide?

A. -4

B. 1

C. 2

D. -4

Answers

—————the answer is c

The value of 'k' for the given system of equation that coincides  is 4

k=4

Given :

System of equations

[tex]2x+y=40 \\kx+2y=80[/tex]

The given equation is in the form of ax+by=c

When the two lines coincides then

[tex]\frac{a_1}{a_2} =\frac{b_1}{b_2} =\frac{c_1}{c_2}[/tex]

Lets make the coefficients proportional to each other and then solve for k

[tex]\frac{2}{k} =\frac{1}{2} =\frac{40}{80} \\\frac{2}{k} =\frac{1}{2} =\frac{1}{2} \\\\\frac{2}{k} =\frac{1}{2} \\4=k\\k=4[/tex]

The value of k from the given system of equation is 4

When the line coincides then the value of k is 4

Learn more :  brainly.com/question/24022234

EXTRA POINTS---Set up an equation and find the value of x.

Answers

Answer:

13) x = 30

14) x = 22.5

15) x = 36

Step-by-step explanation:

13) 4x+2x = 180

6x = 180

x = 30

14) 3x+5x = 180

8x = 180

x = 22.5

15) 2x+3x+2x+3x = 360

10x = 360

x = 36

Answer:

x=36

Step-by-step explanation:

Tanisha and Bess are sisters. Tanisha is half as old as Bess. Bess is 6 years older than Tanisha.
How old is each sister?
A. Tanisha is 3, and Bess is 6.
B. Tanisha is 3, and Bess is 9.
c. Tanisha is 6, and Bess is 9.
D. Tanisha is 6, and Bess is 12.

Answers

Answer: a

Step-by-step explanation: because bess it says she has 6 and is 3 it says have of 6 is 3 so it is 3

The age of Tanisha is 6 years and the age of Bess is 12 years. Therefore, option D is the correct answer.

We need to find the age of Tanisha and Bess.

What is an equation?

A statement that the values of two mathematical expressions are equal (indicated by the sign =).

Let the age of Tanisha be x.

Bess is 6 years older than Tanisha.

Now, Bess=x+6

Tanisha is half as old as Bess.

Now, Tanisha=1/2×Bess

⇒x=1/2×(x+6)

⇒x=6

So, Tanisha's age=6 years and Bess's age=12 years.

To learn more about an equation visit:

https://brainly.com/question/14686792.

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A car covers a distance of 50 km in 360 min . Calculate the speed of the car

Answers

Answer:

0.15 km/min

Step-by-step explanation:

V=S/T

=50/360

≈0.15km/min

can someone help with this problem pls

Answers

Answer:

A

Step-by-step explanation:

20:12/4

5:3

What is this ?????? plz helpppp

Answers

Answer:

The baker uses 15 cups of cereal for 10 cups of marshmallows

Step-by-step explanation:

The proportion 6:4 has to stay true in the answer, so both numbers have to be multiplied by the same number

6 x 2.5 = 15

4 x 2.5 = 15

both numbers were multiplied by the same number in this answer and it is the only answer that stays true to the ratio

If the corresponding heights of similar pyramids are in a ratio of 2:5. What will be the ratio of the volumes of the similar pyramids?
2:5
8:125
4:25
6:15

Answers

Answer:

2:5

Step-by-step explanation:

Shapes that are similar have the same ratio (and angle measurements), usually the only change in similar shapes is through a dilation or rotation.

Do you mind giving me brainliest?

Hope this helps! :)

Find Arc PR
Please help and give explanation ​

Answers

Arc PR is 156 degrees. Since both angles are are making the forming arc they should be congruent. You can put (5x+23)=(9x-21) which is x=11.
Then you plug in 11 into your equation; 5(11)+23=78.
Since the vertex is on the outside of the circle then the arc is forms is 2 times the value of the angle.
78(2)=156

HELP DOES ANYONE KNOW HOW TO DO THIS?

Answers

Answer:

im pretty positive its exponential

Step-by-step explanation:

Answer:

Linear a good app to do this work is Desmos graph the pairs to see if they are straight

Different measurements are expressed in different units. Choose the correct SI units for the following types of measurement.

The SI units for measuring the velocity of the car:
The SI units for measuring the acceleration of the car:
The SI units for measuring force:
The SI units for measuring mass:

Answers

Answer:

i dont have one,

jus wanted to remind u that the beutiful

person above deserved brainiest

:)

also u need 2 answers minimum to give brainliest

Please help me 25 Points plz also Brainlliest just please help me.

Answers

Answer:

101.7 ft I think

Step-by-step explanation:

5 1/3 times 2 is 10.7

4 3/4 time 2 is 9.5

10.7 times 9.5 is 101.65

The six becomes a 7 to make 101.7

find the missing variable 4x+8

Answers

Answer:

13

Step-by-step explanation:

what does this mean 4x + 6y=9
12x + 18y=27

Answers

Answer: Infinite solutions

Step-by-step explanation:

Solve4x+6y=9for x:

4x+6y=9

4x+6y+−6y=9+−6y(Add -6y to both sides)

4x=−6y+9

4x /4 = −6y+9 /4

(Divide both sides by 4)

x= −3 /2 y+ 9 /4

Substitute

−3 /2 y+ 9 /4

for x in 12x+18y=27:

12x+18y=27

12( −3 /2 y+ 9 /4 )+18y=27

27=27(Simplify both sides of the equation)

27+−27=27+−27(Add -27 to both sides)

0=0

12x^5 divided 3x^2

15y^7 divided 3y ^2

Answers

Answer:

4x³

5y^5

Pls mark as brainliest

answer asap plllssssss​

Answers

3(x+6)

3x+3(6)

2(1.5x+9)

Please help i will mark brainliest

Answers

A because x is greater than negative one

Answer:

A

Step-by-step explanation:

-3x - 5 < -2

-3x < -2 + 5

-3x < 3

-x < 1

x > -1

A, its a closed circle because of ">" symbol

help me pleaseee xxoxo

Answers

Answer:

4cube×acube×b power 6

sorry if you don't understand

Original price of a DVD: $22.99 Discount: 15%​

Answers

Answer:

Step-by-step explanation:

3.4485

3.4485 is the answer

Find the value of x.

Answers

Answer:

your answer will be x=80°

Step-by-step explanation:

hope it helps you

have a great day!!!

It costs $150.00 to rent the bowling alley, plus $8.50 per person. What would be the total
cost to rent the bowling alley for 25 people?

Answers

Answer: $362.50.

8.5 x 25 = 212.5,

212.5 + 150.0 = 362.50

Very simple, I hope this helps!

Consider the point p=(1,4) and the line y=2x+8 Equation in slope intercept form that passes through P and is parallel to the line

Answers

Answer:

No, also you can try  to use desmos to figure it out it is a very helpful tool

Step-by-step explanation:

Which is equivalent to (2c - 5t - 3u ) + (c + 3t ) + (3t - 4u )?

3c - 2t - 7u

3c + t - 7u

5c - 2t + 7u

2c + t - 7u

Answers

Answer:

(2c - 5t - 3u ) + (c + 3t ) + (3t - 4u )

2c-5t -3u+c+3t+3t-4u

3c+t-7u is your answer

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