hard question!!!please help me !
there is english below ​

Hard Question!!!please Help Me !there Is English Below

Answers

Answer 1

9514 1404 393

Answer:

  t = ±√3

Step-by-step explanation:

The first equation tells us ...

  x^2 +tx +2 = (x -h)(x -k)

 x^2 +tx +2 = x^2 -(h+k)x +hk

Comparing coefficients, we have the equations ...

  t=-(h+k)

  2 = hk

__

The second equation tells us ...

  2x^2 +mx +2m = 2(x -h/k)(x -k/h)

  2x^2 +mx +2m = 2x^2 -2(h/k +k/h)x +2

Comparing coefficients, we have the equations ...

  m = -2(h/k +k/h)

  2m = 2

__

Dividing the last equation by 2 gives ...

  m = 1

Using that in the third equation, we have ...

  1 = -2(h/k +k/h) = -2(h^2 +k^2)/hk

Using hk = 2, this gives us ...

  h^2 +k^2 = -1

From the first equation, we know ...

  t^2 = (-(h+k))^2 = h^2 +2hk +k^2 = (h^2 +k^2) +2(hk)

Substituting the values for these terms, we have ...

  t^2 = -1 + 2(2) = 3

  t = ±√3

Possible values of t are √3 and -√3.


Related Questions

Bill weighs 120 lb and is gaining 10 pounds per month. Phil weighs 204 pounds and is losing 4 pounds per month.

How much will Bill and Phil weigh when they weigh the same amount? Answer (write the number only)

Answers

Answer:

180 pounds

Step-by-step explanation:

In six months Bill's weight will be increased by 60 pounds

10 pounds*6 months=60 pounds

120+60=180

In six months Phil will lose 24 pounds decreasing his weight from 204 to 180

4 pounds*6 months=24 pounds

204-24=180

Answer:

180 lbs

Step-by-step explanation:

204-24= 180

120+60=180

multiply each by 6  

14=s/3 what does s equal​

Answers

you have to do the inverse of divide so multiply to find out a

14x 3= 42

S= 42
Answer:   s = 42

===============================================

Explanation:

To isolate s, we need to undo the division. We'll multiply both sides by 3

14 = s/3

3*14 = 3*(s/3)

42 = s

s = 42

-------

As a check,

14 = s/3

14 = 42/3 .... replace s with 42

14 = 14

We get the same thing on both sides, so this confirms we have the correct value of s.

Abha is climbing a mountain. While covering 20 yards of horizontal distance, Abha’s elevation increases by 40 yards. Consider Abha’s climb as a linear function.


A drawing shows a girl hiking. The vertical distance is forty yards. The horizontal distance is twenty yards.


What is the slope of her climb?

Answers

Answer:

The answer is 2

Step-by-step explanation:

The slope of Abha's climb is given by the equation

Slope m = 2

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be A

Now , let the point be P ( x , y )

And , the equation is given by

The horizontal distance covered by Abha x = 20 yards

The vertical distance covered by Abha y = 40 yards

Now , the slope of the point is given by the equation

Slope m = vertical distance covered by Abha  / horizontal distance covered by Abha

Substituting the values in the equation , we get

Slope m of Abha's climb = y/x

Slope m of Abha's climb = 40 / 20

Slope m of Abha's climb = 2

Therefore , the slope of the line is m = 2

Hence , The slope of Abha's climb is given by the equation Slope m = 2

To learn more about equation of line click :

https://brainly.com/question/14200719

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please help
Basic Radicals ​

Answers

Answer:

B

Step-by-step explanation:

[tex]( \sqrt{c})^{2}= \sqrt{c}* \sqrt{c}= \sqrt{c*c}= c\\[/tex]

Which statement about this table of values is true?

A.Because the rate of change is constant, the function is linear
B.Because the rate of change is constant, the function is nonlinear
C.Because the rate of change is not constant, the function is linear
D.Because the rate of change is not constant the function is nonlinear

Answers

Answer:

D

Step-by-step explanation:

If something is not constant we know it is non-linear. We know this is not constant because when graphed, the line is not straight.

Answer:

D.

Step-by-step explanation:

Here the rate of change is not constant. For example:

10-5 / 20-17 = 5/3

13-10/23-20 = 3/3 = 1

Find the value of x. Round your answer to the nearest tenth.

Answers

Answer:

1.6

Step-by-step explanation:

Find the number in the tenth place

6

and look one place to the right for the rounding digit

2

. Round up if this number is greater than or equal to

5

and round down if it is less than

5

.

1.6

can you please tell me the answer for 8m/.9/12m=

Answers

106.666667



Jccjfjfjujjdjdjd

5(- 3x - 2) - (x - 3) = -4(4x + 5) + 13

Answers

Answer:

0

Step-by-step explanation:

Let's solve your equation step-by-step.

5(−3x−2)−(x−3)=−4(4x+5)+13

Step 1: Simplify both sides of the equation.

5(−3x−2)−(x−3)=−4(4x+5)+13

5(−3x−2)+−1(x−3)=−4(4x+5)+13(Distribute the Negative Sign)

5(−3x−2)+−1x+(−1)(−3)=−4(4x+5)+13

5(−3x−2)+−x+3=−4(4x+5)+13

(5)(−3x)+(5)(−2)+−x+3=(−4)(4x)+(−4)(5)+13(Distribute)

−15x+−10+−x+3=−16x+−20+13

(−15x+−x)+(−10+3)=(−16x)+(−20+13)(Combine Like Terms)

−16x+−7=−16x+−7

−16x−7=−16x−7

Step 2: Add 16x to both sides.

−16x−7+16x=−16x−7+16x

−7=−7

Step 3: Add 7 to both sides.

−7+7=−7+7

0=0

If you roll the 2 6-sided dies, what is the probability of rolling an odd number? ​

Answers

Answer:

50%

Step-by-step explanation:

Please help me with this please if you don’t know don’t answer is 13 points

Answers

Answer:

x=29

Step-by-step explanation:

We know for a fact that in a square:

- All of its angles have equal measure (90 degrees)

(e.g. Measure of Angle CAT, measure of Angle CST = 90 degrees)

Now that we know the facts, let's try to find x.

Now since we know that all the angles are equivalent to 90 degrees, we can say that Measurement of Angle SCA is 90 degrees. So:

[tex]90=3x+3[/tex]

Next, we'll simply just isolate the x:

[tex]90=3x+3\\90-3=3x+3-3\\87=3x\\\frac{87=3x}{3} \\29 = x[/tex]

Maha has two colors of modeling clay. She has
1.05 kilograms of blue modeling clay and
1.3 kilograms of orange modeling clay. Which
color of modeling clay does Maha have more of?

Answers

Answer:

orange modeling clay . .

Helping my sister study... 3rd grade math can anyone explain?​

Answers

Answer:

what the question , so I can help u

Answer:

sure! but which one? i dont see anything

Step-by-step explanation:

Find the inverse. Then, graph both the function and its inverse.
y = 3x2

Answers

Answer:

y = 6

may help you i think so

Is the relation below a function? Use the vertical-line test.
{(−6, 3), (−1, 0), (2, 4), (−1, −7), (5, 2)}

A. yes
B. no

Answers

Answer:A

Step-by-step explanation:Yes; the graph passes the vertical line test.

No it is not a function because there are two of the same x values.

PLS PLS HELP
a trapezoidal prism has a volume of 1260 cm^3. the height of the prism is 18 cm while the bases of the trapezoid are 12 cm and 8cm. Sketch the prism and find the height of the trapezoidal base

Answers

Answer:

7 cm

Step-by-step explanation:

Volume of the prism is the product of its base area and height

V = AHV = 1260 cm³H = 18 cm

Find base area:

A = 1260/18 = 70 cm²

Area of the trapezoid:

A = 1/2(b₁ + b₂)h

Substitute given values and solve for h:

70 = 1/2(12 + 8)h70 = 10hh = 70/10h = 7 cm

Find area of base

Volume/Height1260/1870cm²

Now

Height of trapezoid base be x

1/2(12+8)x=7020x=140x=7cm

PLEASSSSEEEEEEEEE HELLLLLPPPPPPPPPPPPPPP
Q what is 2+2
A A.4 B. 1 C 2 D 3

Answers

the answer is a.) 4!
2+2=4 the answer is A

13x = 3(X-20) How to solve this algebra equation?

Answers

-6x is the correct answer

Answer:

x = -6

Step-by-step explanation:

13x = 3(x - 20)              {Use distributive method:a(b+c)=(a*b) + (a*c)

13x = 3*x - 3*20

13x = 3x - 60            {Subtract '3x' from both sides}

13x -3x = -60      

    10x = -60      {Divide both sides by 10}

        x= -60/10

       x = -6

Solve for 2.
5x - 5
1
r - 2
3

Answers

Answer:

x= 13 /14

Step-by-step explanation:

Let's solve your equation step-by-step.

5x−5

x−2

=

1

3

Step 1: Cross-multiply.

5x−5

x−2

=

1

3

(5x−5)*(3)=1*(x−2)

15x−15=x−2

Step 2: Subtract x from both sides.

15x−15−x=x−2−x

14x−15=−2

Step 3: Add 15 to both sides.

14x−15+15=−2+15

14x=13

Step 4: Divide both sides by 14.

14x

14

=

13

14

x=

13

14

Sharon tried to solve an equation step by step.
all Sumi
9 = -3(e - 2)
mbining
9-3e + 6
Step 1
he distrib
15 - 3e
Step 2
5=e
nterpretin
Step 3
Find Sharon's mistake.
O 1.5
Choose 1 answer

Answers

Not sure if this is what you’re looking for because the question is choppy and some of the letters/words are missing.

Step 2(?) the step with 15 - 3e
When combining 9 = -3e + 6, six would be subtracted from nine equaling three not fifteen.
Correct Steps:
Equation: 9 = -3 (e - 2)

Step 1: 9 = -3e + 6
- 6 - 6
3 = -3e

Step 2: 3 = -3e
/-3 /-3
-1 = e

Answer: -1 = e

1/4 of the sum 18 and 6

Answers

Answer:

18+6=24 then 24/4=6

Step-by-step explanation:

Factorize i) 6y? - 24 y
ii) 6pq - 4q + 6 - 9p
iii) x² + 14xy + 49y?
iv) 25y? - 16
v) 9x? – 30x + 25
vi) p+2p
-15
vii) y + 8y +12​

Answers

answer for the first one

1) [tex]6 {y}^{2} - 24y[/tex]

[tex] = > 6y(y - 4)[/tex]

2) [tex]6pq - 4q + 6 - 9p[/tex]

[tex] = > (6pq - 4q) + ( - 9p + 6)[/tex]

[tex] = > [2q(3p - 2)] + [- 3( 3p - 2)] [/tex]

[tex] = > 2q(3p - 2) - 3(3p - 2)[/tex]

[tex] = > (3p - 2)(2q - 3)[/tex]

3) [tex] {x}^{2} + 14xy + 49y[/tex]

[tex] = > {x}^{2} + 2 \times x \times 7y + {(7y)}^{2} [/tex]

[tex] = > {(x + 7y)}^{2} [/tex]

[tex] = > (x + 7y)(x + 7y)[/tex]

4) [tex]25 {y}^{2} - 16[/tex]

[tex] = > {(5y)}^{2} - {4}^{2} [/tex]

[tex] = > (5y + 4)(5y - 4)[/tex]

5) [tex]9 {x}^{2} - 30x + 25[/tex]

[tex] = > {(3x)}^{2} - 2 \times 3x \times 5 + {(5)}^{2} [/tex]

[tex] = > {(3x - 5)}^{2} [/tex]

[tex] = > (3x - 5)(3x - 5)[/tex]

6) [tex] {p}^{2} + 2p - 15[/tex]

[tex] = > {p}^{2} + 5p - 3p - 15[/tex]

[tex] = > p(p + 5) - 3(p + 5)[/tex]

[tex] = > (p + 5)(p - 3)[/tex]

7) [tex] {y}^{2} + 8y + 12 = 0[/tex]

[tex] = > {y}^{2} + 2y + 6y + 12[/tex]

[tex] = > y(y + 2) + 6(y + 2)[/tex]

[tex] = > (y + 2)(y + 6)[/tex]

How do you solve the system of equations 8x-9y=158x−9y=15 and -x+4y=1−x+4y=1 by combining the equations.

Answers

Answer:

x = 3 and y = 1

Step-by-step explanation:

Give system of equations are :

8x-9y=15 ...(1)

−x+4y=1 ...(2)

Multiply equation (2) by 8.

−8x+32y=8 ..(3)

Add equation (1) and (3).

8x-9y -8x + 32y = 15+8

23y = 23

y = 1

Put the value of y in equation (2).

−x+4(1)=1

-x = -4+1

x = 3

Hence, the values of x and y are 3 and 1.

10A. A triangle has side lengths of 10 centimeters, 24 centimeters and 28
centimeters. Is the triangle a right triangle?
Yes or No

Answers

Answer:

no

Step-by-step explanation:

10² + 24² ≠ 28²

Can someone explain me how to do this? No answers, just explanation how to solve. Click on the picture to see the question.​

Answers

Answer:

800 cm

Step-by-step explanation:

x = height of lamp post

set up a proportion:

90/160 = 450/x

cross-multiply:

90x = 72000

x = 800

Answer:

Since you did not want the answer the things you need to solve this question are below.

Step-by-step explanation:

In order to solve this, you will need to read about the scale factor. Here is a picture telling about it briefly.

calculate the profit as a percentage of the cost price ,and correct to one decimal place​

Answers

Answer:

(profit / cost price) * 100

Answer:

I could be 0.4 100= 40% I think I'm right but if I'm not I'm so sorry

Select ALL the side lengths that make a right triangle. *
3,6,7
1,2,4
3,4,5
5,9,10

Answers

3,4,5 is correct

as we know that ,

3² + 4² = 5²

9 + 16 = 5²

25 = 25

hence . 3,4,5 is correct

Answer:

I'm pretty sure it's 3,4,5 but I'm not sure (is it in cm,mm etc?)

Two forces, with magnitudes of 115 pounds and 160 pounds, are acting on an object at angles of 50° and 130°, respectively, with the positive x-axis. Find the magnitude and direction (with the positive .r-axis) of the resultant force.​

Answers

Answer:

Step-by-step explanation:

x=(115cos50+160cos130)=-28.9254

y=(115sin50+160sin130)=210.6622

m^2=x^2+y^2

m=212.64

angle=180+arctan(y/x)

angle=97.82

v=212.64 at 97.82 degrees

Please help! Will give brainliest!
Simplify. [tex](3a^{2}*5a^{2})[/tex]

Answers

Answer: 8a

Step-by-step explanation:

Step-by-step explanation:

I can only think of one way to simplify this and it is by taking out the greatest common factor: a². Or by multiplying the two values together so it's only one value.

a²(3*5)

a²(15)

Or...

(3a² * 5a²)

(15a)

(this one is a because a variable with a power multiplied by a variable with a power only adds the powers together)

WHO EVER ANSWERS THIS WILL GET BRANLIEST

Answers

Answer: Its C

Step-by-step explanation:

24   +   25   +   26   +   27   +   28   +   29   +   30   +   31   +   32   +   33   +   34   ÷   11 = 29

Answer:

c

Step-by-step explanation:

The mean is calculated as

mean = [tex]\frac{sum}{count}[/tex]

Set 1

sum = (2 × 27) + (2 × 28) + (3 × 29) + (2 × 30) + (1 × 33)

       = 54 + 56 + 87 + 60 + 33 = 290

The count is 10 ( number of dots ), then

mean = [tex]\frac{290}{10}[/tex] = 29

Set 2

sum = (4 × 24) + (4 × 25) + (2 × 27)

       = 96 + 100 + 54 = 250

The count is 10 ( number of dots ), then

mean = [tex]\frac{250}{10}[/tex] = 25

please help on this ​

Answers

Answer:

The first on is -80,

next one is -60

third one 3

last one is -54

Step-by-step explanation:

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