Multiply the binomial. To write x2 use "^". X^2 (3x + 2) (x

Subtract (3 + 2i) from (–9 – 8i).

Nadusha1986 [10]

$-9-8i-(3+2i)=-9-8i-3-2i=-12-10i$

6 0

3 years ago

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The cuboid has dimension 25cm by 10cm by 8cm the volume is

sdas [7]

2000cm³.

The volume of any 3d shape is the length x height x width.

This case it is 25 x 10 x 8.

6 0

2 years ago

Help please explain quick!

nalin [4]

Answer: my Face bone A** tight cheerio from last night hit them with that good good make him want to act right Thank me and brain

List to me

Step-by-step explanation:

6 0

3 years ago

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What is the value of the expression when a = 4 and b = 3?

IRISSAK [1]

The answer to your question is b

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3 years ago

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John wants to measure the width of a stream using the methods he has learned in geometry. He puts a stake in the ground opposite

otez555 [7]

John's method to determine the width of the stream uses the knowledge

that the tangent of 60° is approximately 1.7.

The proper sequence John would use to find the width of the stream are;

Step 1; John drives a stake opposite the tree to establish a line between two points

Step 2; John uses a compass to walk away from the stakes at a right angle

Step 3; On the path John walks until he finds a line of sight to the tree that equals 60 degrees

Step 4; John drives a second stake in the ground

Step 5; John measures the the distance between the two stakes

Step 6; John multiplies the distance between the two stakes by 1.7 to find the distance.

Reasons:

The steps that can be used to measure the width of the stream are;

Step 1: Drive a stake opposite the tree on the other side of the stream.

Step 2: With the aid of a compass, walk at right angles to the line formed by the stake and the tree.

Step 3; Keep walking along the previous path till a point is reached where the angle formed between the line of site to the tree and the walk path is 60°.

Step 4; At the point where the line of sight to the tree is 60°, a second stake is driven in the ground.

Step 5; Measure the distance between the stakes that are placed in the ground.

Step 6; Given that by trigonometry, the ratio of the width of the stream to the distance between the two stakes is tan(60°) ≈ 1.7, multiply the distance between the two stakes by 1.7 to find the width of the stream.

$\displaystyle tan(60^{\circ}) = \mathbf{\frac{Width \ of \ stream}{Distance \ between \ stakes}}$