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Andre45 [30]
4 years ago
8

The ordered pair of (-2,5) across the y axis​

Mathematics
1 answer:
djverab [1.8K]4 years ago
3 0

To reflect a point across the y-axis we change the sign in front of the x-coordinate and keep the sign the same for the y-coordinate. So the reflection of the ordered pair of (-2,5) is (2,5).

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4x^2 + 36 / 4x × 1 / 5x
stich3 [128]
Given with a polynomial 4X² + 36/4X *1/5X, we can combine terms with the same power. First, let us perform multiplication of the 2nd and 3rd terms such as the given become 4X² + 36/20X². Then, we can reduce 36 and 20 by 4 and the result is 4X² + 9/5X². We can now proceed combining the terms since they have same power and result will be same as below:
(20X^4 + 9)/5X²
3 0
3 years ago
A system of equations is shown on the graph below.how many solutions does this system have
lisabon 2012 [21]

Answer:

1

Step-by-step explanation:

A solution to a system of equations is the point where the 2 lines meet.

6 0
3 years ago
Evaluate:<br> 20<br> Σ 4(8/9)^n-1 = [?]<br> 1<br> Round to the nearest hundredth.
lianna [129]

Answer:

32.59 (nearest hundredth)

Step-by-step explanation:

<u />

<u>Geometric sequence</u>

General form of a geometric sequence: a_n=ar^{n-1}

(where a is the first term and r is the common ratio)

Given:

\displaystyle \sum^{20}_{n=1} 4 \left(\dfrac{8}{9}\right)^{n-1}

Therefore:

  • a = 4
  • r = 8/9

<u>Sum of the first n terms of a geometric series</u>:

S_n=\dfrac{a(1-r^n)}{1-r}

To find the sum of the first 20 terms, substitute the found values of a and r, together with n = 20, into the formula:

\implies S_{20}=\dfrac{4\left(1-\left(\frac{8}{9}\right)^{20}\right)}{1-\left(\frac{8}{9}\right)}

\implies S_{20}=32.58609013...

\implies S_{20}=32.59\:\: \sf (nearest\:hundredth)                    

7 0
2 years ago
Read 2 more answers
25 pts, please help ASAP
andrew-mc [135]

Answer:

5t - 2t = 84 - 54

3t = 30

t = 30/3

t = 10.

3 0
3 years ago
PLEASE help! 5. Given that side A and side E are of equal length, find a positive value for x. Show all work.
andrew11 [14]
3x²-11=x+13
3x²-x-24=0
(3x+8)(x-3)=0
x=3 or -8/3
☺☺☺☺

4 0
3 years ago
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