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Nostrana [21]
3 years ago
7

× + 20 + 2× = 10 - 2× - 15

Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0

Answer:

The answer is -5

Step-by-step explanation:

\mathrm{Group\:like\:terms}\\x+2x+20=10-2x-15

\mathrm{Add\:similar\:elements:}\:x+2x=3x\\3x+20=10-2x-15

\mathrm{Group\:like\:terms}\\3x+20=-2x+10-15

\mathrm{Add/Subtract\:the\:numbers:}\:10-15=-5\\3x+20=-2x-5

\mathrm{Subtract\:}20\mathrm{\:from\:both\:sides}\\3x+20-20=-2x-5-20

\mathrm{Simplify}\\3x=-2x-25

\mathrm{Add\:}2x\mathrm{\:to\:both\:sides}\\3x+2x=-2x-25+2x

\mathrm{Simplify}\\5x=-25

\mathrm{Divide\:both\:sides\:by\:}5\\\frac{5x}{5}=\frac{-25}{5}

\mathrm{Simplify}\\x=-5

Hope this helps you greatly!

Have a great afternoon!

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Help please i need help with my homework​
Sedbober [7]

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

3 ( x ) + 55 = 85

Answer To Solving Y:

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

3x + 55 = 85

Step 1: Subtract 55 from both sides.

3x + 55 − 55 = 85 − 55

3x = 30

Step 2: Divide both sides by 3.

3x / 3 = 30 / 3

x = 10

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Answer To The Angle:

( 3 ) ( 10 ) + 55 = 85

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

2 ( y ) - 5 = 95

Answer:

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

2y − 5 = 95

Step 1: Add 5 to both sides.

2y − 5 + 5 = 95 + 5

2y = 100

Step 2: Divide both sides by 2.

2y / 2 = 100 / 2

y = 50

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Answer To The Angle:

( 2 ) ( 50 ) − 5 = 95

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Please don't come at me if I am wrong.....:\

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

But, the anwer should be 180 degrees

8 0
2 years ago
The position of an object along a vertical line is given by s(t) = −t3 + 3t2 + 7t + 4, where s is measured in feet and t is meas
saw5 [17]

Answer:

The maximum velocity of the object in the time interval [0, 4] is 10 ft/s.

Step-by-step explanation:

Given : The position of an object along a vertical line is given by s(t) = -t^3+3t^2+7t +4, where s is measured in feet and t is measured in seconds.

To find : What is the maximum velocity of the object in the time interval [0, 4]?

Solution :

The velocity is rate of change of distance w.r.t time.

Distance in terms of t is given by,

s(t) = -t^3+3t^2+7t +4

Derivate w.r.t. time,

v(t)=s'(t) = -3t^2+6t+7

It is a quadratic function so its maximum is at vertex of the function.

The x point of the function is given by,

x=-\frac{b}{2a}

Where, a=-3, b=6 and c=7

t=-\frac{6}{2(-3)}

t=-\frac{6}{-6}

t=1

As 1 lie between interval [0,4]

Substitute t=1 in the function,

v(t)= -3(1)^2+6(1)+7

v(t)= -3+6+7

v(1)=10

Th maximum velocity is 10 ft/s.

Therefore, the maximum velocity of the object in the time interval [0, 4] is 10 ft/s.

8 0
3 years ago
Read 2 more answers
Convert 104 degree Fahrenheit to Celsius
erastovalidia [21]

Answer:

40 degrees Celsius (40°C)

hopefully this helped :3

8 0
3 years ago
Solve for x. X+5/2=b<br> Please help!!
melomori [17]
<span> X+5/2=b
Subtract 5/2 from both sides
Final Answer: x= b-5/2</span>
4 0
3 years ago
PLEASE HELP ILL GIVE BRAINLIST <br><br> Write an equation in Standard Form that has roots -4 and 7.
Misha Larkins [42]

Answer:

x^{2} -3x-28

Step-by-step explanation:

To find this equation in standard form, first, write it in factored form. This looks like y=(x+4)(x-7). Then, multiply the polynomials using the FOIL (First, Outside, Inside, Last) method.

  1. Following the FOIL method, you should multiply the first terms in each binomial, x*x, which equals x^{2}.
  2. Then, the outside terms, x*-7. This equals -7x.
  3. Next, the inside terms, 4*x=4x.
  4. Finally, the last terms, 4*-7, this equals -28.

Then, add all of the terms together x^{2} + -7x+4x+-28. To get the standard form, combine like terms, this comes out to x^{2} -3x-28.

3 0
3 years ago
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