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konstantin123 [22]

2 years ago

6

The 8th term of an ap is 17 and 18 term is 13 find the common difference

1 answer:

Marrrta [24]2 years ago

5 0

Answer:

I'm assuming you meant arithmetic progression. If the common difference is d and because 18 - 8 = 10 we can write 17 + 10d = 13. Solving for d we get d = -0.4 or -2/5.

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kipiarov [429]

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2 years ago

Find the volume of a rectangular pyramid

Nesterboy [21]

Answer:

192 yd³

Step-by-step explanation:

The volume of a rectangular pyramid is given by the formula:

$V=\frac{1}{3} lwh\text{ where } l \text{ is the base length, }w \text{ is the base width, and }h \text{ is the pyramid height}$

In this case: $l = 9, w=8, h = 8$

$\therefore V=\frac{1}{3}(9\text{ yd})(8\text{ yd})(8\text{ yd})=192\text{ yd}^3$

8 0

2 years ago

-12.11-10.5=75.6-3.5x

Inessa [10]

Answer:

x = 28.06

Step-by-step explanation:

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Put all the integers on one side and X on the other.

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-98.21 = -3.5x

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7 0

3 years ago

An irregular polygon has its external angles as 28°,40°,120°,142° and x. Find the value of x

zalisa [80]

Answer:

X=30

Step-by-step explanation:

The whole polygon is 360 degrees so:

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5 0

3 years ago

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lana66690 [7]

Answer:

$T_{3}=27{x}^{2}y^2$

Step-by-step explanation:

The given binomial expression is:

$( {x}^{2} + 3y)^{3}$

When we compare to:

${(a +b)}^{n}$

We have

$a = {x}^{2}$

$b = 3y \\ n = 3$

The nth term is given by;

$T_{r+1}=^nC_ra^{n-r}b^r$

To find the 3rd term, we put:

$r + 1 = 3 \\ r = 2$

We substitute into the formula to get:

$T_{3}=^3C_2( {x}^{2} )^{3-2}(3y)^2$

We simply:

$T_{3}=3( {x}^{2} )^{1} \times 9y^2$

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3 0

3 years ago