I would like some assistance pls

vovangra [49]

We know S(n) = n/2 [ 2a + (n-1)d ]
Here, n = 25
a = -7
d = -2-(-7) = -2+7 = 5

Substitute their values,
S(25) = 25/2 [2(-7) + (25-1)5 ]
S(25) = 25/2 [-14 + 120 ]
S(25) = 25/2 [106 ]
S(25) = 25 [ 53 ]
S(25) = 1325

In short, Your Answer would be 1325

Hope this helps!

5 0

3 years ago

#8 i Find the LCM of 36 and 60 using prime factorizations. The LCM is

mel-nik [20]

LCM=2×2×3×3×5=180

Refer to the attachment

4 0

3 years ago

Read 2 more answers

Alex says that there is no numbers between 1/3 and 1/4 . Why might he think that and what would you tell him? Is there a number

Thepotemich [5.8K]

Answer:

Why might he think that and what would you tell him?

He thought perhaps that numbers were formed by rational numbers of the form $\frac{1}{x}$ , where $x\in \mathbb{N}$ . I would tell him that there are rational numbers $\frac{y}{z}$ , such that $\frac{1}{x}\le \frac{y}{z} \le \frac{1}{x+1}$ , where $x$ , $y$ , $z \in \mathbb{N}$ .

Is there a number that falls between these?

$\frac{7}{24}$ is a rational number between $\frac{1}{3}$ and $\frac{1}{4}$ .

Step-by-step explanation:

Why might he think that and what would you tell him?

He thought perhaps that numbers were formed by rational numbers of the form $\frac{1}{x}$ , where $x\in \mathbb{N}$ . I would tell him that there are rational numbers $\frac{y}{z}$ , such that $\frac{1}{x}\le \frac{y}{z} \le \frac{1}{x+1}$ , where $x$ , $y$ , $z \in \mathbb{N}$ .

Is there a number that falls between these?

Indeed, the average number of $\frac{1}{3}$ and $\frac{1}{4}$ , for instance. That is:

$\frac{y}{z} = \frac{\frac{1}{3}+\frac{1}{4} }{2}$

$\frac{y}{z} = \frac{\frac{7}{12} }{2}$

$\frac{y}{z} = \frac{7}{24}$

$\frac{7}{24}$ is a rational number between $\frac{1}{3}$ and $\frac{1}{4}$ .

8 0

2 years ago

Help me, please!

vovangra [49]

Answer:

<h2>Yes, the circumference will always double when the radius is doubled</h2>

Simple Explanation: For example, 2 is the given radius, we can double 2 and get 4 as our diameter, then times pi. We get 4 pi as our initial circumference.

When we double the radius, we have a given radius of 4, and to find the diameter we get 8. 8 times pi= 8 pi. This is the simple version of the below example

Full Example:

Radius - 3

Pretend the radius is 3, do 3*2 and get the diameter of 6, then times 3.14 equals 18.84. So the current circumference is 18.84.

Now to find the new circumference. Now the radius is 6. To find the diameter we can do 6*2 and get 12. Now to find circumference; 12 x 3.14 = 37.68. 37.68 / 18.84 = 2

3 0

3 years ago

How do you do simple algebra

n200080 [17]

Know the order of operations. However, one of the trickiest things about solving an algebra equation as a beginner is knowing where to start. Luckily, there's a specific order for solving these problems: first do any math operations in parentheses, then do exponents, then multiply, then divide, then add, and finally subtract

8 0

3 years ago

I would like some assistance pls​

I would like some assistance pls