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3 years ago

How do you do 1? Please help me step by step or send a picture of your work

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

5 0

Subtract 6 from -4, to make -10, then divide both sides by ten, making -x=-2, then subtract both to make x=2

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Simplify the expression 7.8n²+0.5+9n-.0.4-7n+n²

Natali [406]

The final answer for this question would be.....

8.8n^2+16n+0.1

Hope this helps!!!!

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3 years ago

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What is the distance between (3,2) and (3,-8)

prohojiy [21]

The answer is (0,-10)

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3 years ago

An isosceles triangle ABC has legs of length 24 and a vertex angle that measures 36º . Determine the length of its base, BC , to

iris [78.8K]

Answer: $BC=14.8$

Step-by-step explanation:

By definition, an Isosceles triangle has two equal sides and its opposite angles are congruent.

Observe the figure attached, where the isosceles triangle is divided into two equal right triangles.

So, in this case you need to use the following Trigonometric Identity:

$sin\alpha =\frac{opposite}{hypotenuse}$

In this case, you can identify that:

$\alpha =\angle BAD=\angle CAD=18\°\\\\opposite=BD=CD=x\\\\hypotenuse=AB=AC=24$

Substituting values, and solving for "x", you get:

$sin(18\°)=\frac{x}{24}\\\\24*sin(18\°)=x\\\\x=7.416$

Therefore, the length of BC rounded to nearest tenth, is:

$BC=2(7.416)=14.8$

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3 years ago

Find the midpoint of A and B where A has coordinates (2, 4)<br> and B has coordinates (-3, -9).

tatuchka [14]

Answer:

(-0.5,-2.5)

Step-by-step explanation:

(x1 + x2) / 2 = x midpoint
(y1 + y2) / 2 = y midpoint

⇒ 2 + -3 = 5

⇒ 5 / 2 = -0.5

⇒ 4 + -9 = -5

⇒ -5 / 2 = -2.5

→ = (-0.5, -2.5)

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3 years ago

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vivado [14]

Answer:

The volume would be 31 cubic feet.

Step-by-step explanation:

To find this, use the formula for the area of a right pyramid.

A = 1/3bh

A = 1/3(8)(12)

A = 1/3(96)

A = 32

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3 years ago