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2 years ago

Whats the answer for this question I don't really understand it ??

Mathematics

1 answer:

noname [10]2 years ago

5 0

Multiply 13 to the other side rid of the fraction so u have

n+7=26 then subtract 7 to get

n=19 thats ur answer

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What is the equation of the line that passes through the point (3,2) and has a slope of -5/3?

Pani-rosa [81]

Answer= Y=-5/3x+7

First substitute (3,2) into the equation y=-5/3x +b which gives you 2=-5/3x+b. Solve for b, then put the equation into slope-intercept form.

8 0

3 years ago

The net of square pyramid is shown below. What is the surface area of the pyramid?

miv72 [106K]

The surface area of that pyramid is 192 cm^2

4 0

3 years ago

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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15. N an 1 4 2 −12 3 36 t

Rzqust [24]

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is $\sum_{n=4}^{15} 5(-2)^{n-1}$$$

<h3>What is sequence ?</h3>

Sequence is collection of numbers with some pattern .

Given sequence

$a_{1}=5\\\\a_{2}=-10\\\\\\a_{3}=20$

We can see that

$\frac{a_1}{a_2}=\frac{-10}{5}=-2\\$

and

$\frac{a_2}{a_3}=\frac{20}{-10}=-2\\$

Hence we can say that given sequence is Geometric progression whose first term is 5 and common ratio is -2

Now $n^{th}$ term of this Geometric progression can be written as

$T_{n}= 5\times(-2)^{n-1}$

So summation of 15 terms can be written as

$\sum_{n=4}^{15} T_{n}\\\\$\\$\sum_{n=4}^{15} 5(-2)^{n-1}$$$

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is $\sum_{n=4}^{15} 5(-2)^{n-1}$$$

To learn more about Geometric progression visit : brainly.com/question/14320920

8 0

2 years ago

The vértices of a figure are given.

tatyana61 [14]

Answer:

R''(2, 1), S''(-1, 7), T''(2, 7)

Step-by-step explanation:

Rotation 90° CCW is accomplished by the transformation ...

(x, y) ⇒ (-y, x)

Translation 3 left and 8 up is accomplished by the transformation ...

(x, y) ⇒ (x -3, y +8)

Together, the two transformations give ...

(x, y) ⇒ (-y -3, x +8)

So your transformed points are ...

R(-7, -5) ⇒ R''(-(-5)-3, -7+8) = R''(2, 1)

S(-1, -2) ⇒ S''(-(-2)-3), -1+8) = S''(-1, 7)

T(-1, -5) ⇒ T''(-(-5)-3, -1+8) = T''(2, 7)

8 0

3 years ago

Extra points to the brainiest answer!

mixer [17]

Answer:

Step-by-step explanation:

That'd be the second root of 7^3, where 3 is the exponent of the radical.

6 0

2 years ago

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