Sequence. 4, 13, 28, 49, ?

Answers

Answer 1

Answer: Sequence: 4, 13, 28, 49
Now, differences between numbers = 13-4, 28-13, 49-18
= 9, 15, 21
We can see, difference is increasing by 6 at each step, so it would be 27 for next.

Next number = 49 + 27 = 76

In short, Your Answer would be 76

Hope this helps!

Answer 2

Answer: you have to list the differnences, then the 2nd differences

4, 13, 28, 49, ?
9 15 21
6 6 6
answer: 76

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Best Method using system of equations

x=4y+8
2x-8y=-3

Answers

In this case, since one equation is in the form of x=, substitution would be best for this problem. Simply plug in 4y + 8 in place of x in the second equation, solve for y, then plug that value into the first equation to find x.

X=4y+8
2x-8y=-3

lets use the substitution method
2x-8y=-3
2(4y+8)-8y=-3
8y+16-8y=-3
16 is not equal to -3 so lets try elimination

x=4y+8
2x-8y=-3

xhange the 1st equation to standard for
x-4y=8
2x-8y=-3

multiply the 1st equation to remove x
2x-8y=8
2x-8y=-3
0 is not equal to 11

therefore we cannot solve using both equations so te question's answer is undefined

Please help!!!! I am about to fail !!

Answers

Given:

A circle with its center at (0, -3).

To find:

The standard equation for the given circle.

Solution:

The standard form of a circle is $(x-h)^(2)+(y-k)^(2)=r^(2)$ , where (h, k) is the center of the circle and r is the radius of the circle.

The center of the given circle is at (0, -3).

We need to determine the radius of the circle. The center is at (0, -3) and a point with the same y coordinate is (3, -3).

The radius of the circle $= 3-0=3$ units.

So for the given circle, (h, k) is (0, -3) and r is 3 units.

So the equation becomes $(x-0)^(2)+(y-(-3))^(2)=3^(2)$ .

The standard equation for the circle is $x^(2)+(y+3)^(2)=9.$

how do i do 1 only? i honestly don't know what to do. first one answer is brainliest. oh and if you mind plz send me the answer for 1 b and c.thx

Answers

Since they all have the same denominator you add them, first you can add the whole numbers,
2+1+3=6
1/3+2/3= 3/3 or 1
Plus 3/3 or 1
So, now you have 2+1+3+1+1
The answer is 8

Please help with solving the blank answers

Answers

Distribute The 4 In Problem Number 2. (4*2.5X)+(4*1.25) = 77
Simplify. 10X+5 = 77. Now, Subtract 5 From Both Sides.
10X = 77-5
10X = 72.
Now, Divide.
X = 72/10.
X = 7.2.
For 13, We Have This:
3/5p+2/3 = 8.
Now, Subtract 2/3.
3/5p = 7 1/3
Now, Divide.
7 1/3 Needs To Be Converted To An Improper Fraction.
It Becomes 22/3.
22 5 110
--- * --- = ----
3 3 9
Now, Make Into A Proper Fraction.
It Becomes 12 And 2/9.

Amanda is adding the numbers below. $3.7 x 10^(20) + 4.45 x 10^(20)$

What is the sum written in scientific notation?

Answers

Basically what you do is (the ^ arrow meaning exponent)
You take 3.7 + 4.45 x 10^20
Then 8.15 x 10^20, remove the decimal of 8.15 = 815 x 10^-2 x 10^20
815 x 10^18 = 815000000000000000000

On Serena's tenth birthday,her mom was 3 times Serena's age.How old will Serena and her mom be when her mom's age times 0.5 will equal Serena's age?

Answers

Serena 10th birthday means she was 10 and her mom was 3 times as old which is 30. They are 20 years apart so 0.5 or 1/2 her mom's age will be Serenas age when her mom is 40 and she is 20

Answer:

15 yrs

Step-by-step explanation:

10 x 3 = 30

30 x 0.5 = 15.0

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