One number is 10 more than twice another. Their sum is 1. Find the numbers

Answers

Answer 1

Answer:

-3 and 4

Step-by-step explanation:

We can start naming the first number x

Hence, the second number would be 10+2x

Set up an equation.

10+2x+x=1

Combine like terms

10+3x=1

Subtract 10 from both sides

3x=-9

Divide both sides by 3.

x=-3

The first number is he first is -3.

Plug that into the expression for the second number.

10+2x

10+2(-3)

10-6

4

The two numbers are -3 and 4.


Related Questions

What type of line is the graph of 4x + y = −3? (1 point) a Vertical b Horizontal c Rising d Falling

Answers

Answer:

Falling

Step-by-step explanation:

You have to convert it into slope-intercept form(y=mx+b) to find out. TO do this, you subtract 4x from the left, so it would be y=-4x-3. -4x is the slope, and since it is negative, it is falling.

Answer:

rising positive slope

Step-by-step explanation:

27 divided by 52,758

Answers

Answer:

511

Step-by-step explanation:

ok

Answer. i believe this is your answer 0.00051177072

• Solve the following equation:
4(-x + 1) = 2x-10

Answers

Answer:

x=7/3

Step-by-step explanation:

To solve the equation we have to isolate x.

So first we distribute on the left side

-4x+4=2x-10

then we add 4x to both sides

4=6x-10

add 10 to both sides

14=6x

divide both sides by 6

x=7/3

Explain how to solve 5 x 2 − 3 x = 25 by completing the square. What are the solutions?

Answers

Answer:

[tex]x = -5[/tex]

Step-by-step explanation:

[tex]5(2) - 3x = 25\\10 - 3x = 25\\-15 = 3x\\-5 = x[/tex]

Step-by-step explanation:

The solution is shown in the image above

6(4T-3)+6(4-3T) help pls!!!

Answers

Answer:

i hope this answer will help

Step-by-step explanation:

6(4T-3)+6(4-3T) =0

24T-18+24-18T =0

6T+6=0

6T=-6

T=-6/6

T=-1

In a race, there are 20 runners. Trophies for the race are awarded to the runners
finishing in first through fourth place.
In how many ways can first through fourth place by determined?

Answers

Answer:

116,280 ways

Step-by-step explanation:

Because your finish place is mutually exclusive (if you come in first you cant come in second, if you come in second you cant come in third, etc) you have to decrease the amount of runners for each place.

20 runners can get first

19 for second

18 for third

17 for fourth.

To find out the total amount of possibilities you multiply each amount. 20 x 19 x 18 x 17 = 116,280.

I hope this helps!

-TheBusinessMan

Use the Ratio Test to determine the convergence or divergence of the series. If the Ratio Test is inconclusive, determine the convergence or divergence of the series using other methods. (If you need to use or –, enter INFINITY or –INFINITY, respectively.)
[infinity]summation 7 n!/n = 1

Answers

Answer:

Given series is divergent

Step-by-step explanation:

Step(i):-  

By using Ratio test

                [tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = l[/tex]

a)     [tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = l[/tex]  

'l' is finite then the given ∑aₙ is convergent

b)   [tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = l[/tex]  

Here 'l' is infinite then the  ∑aₙ  is divergent

Step(ii):-

Given      aₙ = [tex]\frac{n!}{n}[/tex]

            [tex]a_{n+1} = \frac{(n+1)!}{n+1}[/tex]

     [tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = \lim_{n \to \infty} |\frac{\frac{(n+1)!}{n+1} }{\frac{n!}{n} } |[/tex]

               we know that  n ! = n (n-1) (n-2) ......3.2.1

              and also          (n+1) ! = (n+1)n!

  [tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = \lim_{n \to \infty} |\frac{\frac{n+1)n!}{n+1} }{\frac{n!}{n} } |[/tex]

[tex]\lim_{n \to \infty} |\frac{a_{n+1} }{a_{n} } | = \lim_{n \to \infty} n[/tex]

                       = ∞

Given sum of the series is divergent

1. If p(x) = 3x + 4x² - 5x +8, find p(-2).​

Answers

Step-by-step explanation:

[tex]\small{\underline{\tt{\red{Given}}}}[/tex]

[tex]\rightarrow[/tex] p(x) = -2

[tex]\small{\underline{\tt{\green{solution}}}}[/tex]

[tex]\rightarrow[/tex][tex]p(x) = 3x + {4x }^{2} - 5x + 8[/tex]

[tex]\rightarrow[/tex][tex]p( - 2) = 3( - 2) + 4( { - 2}^{2} ) - 5( - 2) + 8[/tex]

[tex]\rightarrow[/tex][tex] p( - 2) = - 6 + 16 + 10 + 8[/tex]

[tex]\rightarrow[/tex][tex]p( - 2) = 10 + 18[/tex]

[tex]\rightarrow[/tex][tex]p( - 2) = 28[/tex]

[tex]\small\boxed{p(-2) = 28 }[/tex]

Hope it helps

What is the value of x in the equation 4(2x + 14) = 0? (1 point) Select one: a. 9 b. 7 c. −7 d. −9

Answers

-7 or c. because 2 times -7 is -14. and -14 plus 14 is 0. and 4 times 0 is 0 so 0=0

8.
Suppose you deposit $300 in a savings account that pays an annual rate of 6%. How much
interest would you earn in 3 years?

Answers

Answer:

i will try to see

Step-by-step explanation:

i will try to solve if i can answeer it

solve for u: u/9.6 = 6 whats the answer

Answers

Answer:

u = 57.6

Step-by-step explanation:

u/9.6 = 6

Multiply each side by 9.6

u/9.6 * 9.6 = 6* 9.6

u = 57.6

Answer:

u = 57.6

Step-by-step explanation:

To isolate u, we have to multiply 9.6 on both sides to eliminate the denominator. That leaves us with u = 6 * 9.6 = 57.6

If you would like more help with math or other subjects for FREE, check out growthinyouth.org.

What is the answer to this question?​

Answers

Answer:

-9

Step-by-step explanation:

Add the cards together

2 + -6 + 1 + -2 + -4

-9

A drone carrying fireworks is launched from a platform above a lake and follows a parabolic path. It will set off the fireworks at its highest point. The drone’s height above the surface of the lake is given by the function h(t) = -16t2 + 64t + 80, where h represents height in feet and t represents time in minutes. a. How high is the platform? b. From what height will the fireworks be released? c. When does the drone land?

Answers

Yes it is true that’s the answer

Answer: Answer is in the steps

Step-by-step explanation:

using the function h(t) = -16t^2 + 64t + 80    and H is height in feet  t is the time in minutes we can evaluate how high the platform is by solving for the y intercept.

h(t) = -16t^2 + 64t + 80  the y intercept is when h(t) is h(0)  so when it is h of zero  put zero into the function and solve the function

A) -16(o)^2 + 64(0) + 80  

      0 -0  + 80

    h(0) =  80  

Which means the platform is 80 feet high.  

B) In the reading it says that it will set the firework at its highest point  and in other words its highest point is its vertex. So solve for the vertex .

   h(t) = -16t^2 +64t + 80       To solve for the vertex, use the formula x= -b/2a  to find the x coordinate of the vertex.

     so  the value of b is 64  and a is -16 .

 x = -64 / -32    

x = 2

 So the x coordinate of the vertex is 2  so input it and solve for the y coordinate of the vertex.

h(t) = y =  -16(2)^2 + 64t+80

y=   -16(4) + 64(2)+ 80  

  y=   -64 + 128 + 80

      y = 144  

So the y coordinate is 144. which means the vertex  is (2,144) and also means that the fireworks will be released at  a 144 feet.

 C)  The drone will land on the ground when they is not height which means when  y is equal to zero or h(t)  is zero.  

          -16t^2 +64t + 80 = 0       so solve for t using the quadratic formula.

The quadratic formula says that  x= -b ± [tex]\sqrt{b^2 -4ac} /2a[/tex]  

   a = -16     b= 64   and c= 80  

 x = -64 + [tex]\sqrt{9216}/ -32[/tex]  

 x= -64 ± 96 /-32  

  x=  -1   or  x = 5

    Which means the drone land on the ground in 5 minutes. It can't be -1 because a negative number can't represent time.

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