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3 years ago

Please HELP!!! Due tonight and I’m so worried.

Mathematics

2 answers:

adelina 88 [10]3 years ago

7 0

Answer:

3: Line AD

4: Line Segment AD

5: Point H

Step-by-step explanation:

For #3, because plane ABC and AEH are both planes that go in every direction infinitely, All points on line AD intersect.

For #4, because line segment AD is contained inside of the same plane of ABC, The entire line segment intersect.

For #5, Both lines meet at point H.

ExtremeBDS [4]3 years ago

6 0

Answer:

third one should be about f

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Jim borrows $210 from his sister at an 8% interest for seven years. How much interest does Jim have to pay?

bulgar [2K]

Answer:

$117.6

Step-by-step explanation:

Formula:

I = Prt

Given:

P = 210

r = 8% = 0.08

t = 7

Work:

I = Prt

I = (210)(0.08)(7)

I = 117.6

7 0

2 years ago

Read 2 more answers

What are the solutions of the equation x6 + 6x3 + 5 = 0? Use factoring to solve.

lapo4ka [179]

Consider the equation $x^6+6x^3+5=0$ .

First, you can use the substitution $t=x^3$ , then $x^6=(x^3)^2=t^2$ and equation becomes $t^2+6t+5=0$ . This equation is quadratic, so

$D=6^2-4\cdot 5\cdot 1=36-20=16=4^2,\ \sqrt{D}=4,\\ \\ t_{1,2}=\dfrac{-6\pm 4}{2} =-5,-1$ .

Then you can factor this equation:

$(t+5)(t+1)=0$ .

Use the made substitution again:

$(x^3+5)(x^3+1)=0$ .

You have in each brackets the expression like $a^3+b^3$ that is equal to $(a+b)(a^2-ab+b^2)$ . Thus,

$x^3+5=(x+\sqrt[3]{5})(x^2-\sqrt[3]{5}x+\sqrt[3]{25}) ,\\x^3+1=(x+1)(x^2-x+1)$

and the equation is

$(x+\sqrt[3]{5})(x^2-\sqrt[3]{5}x+\sqrt[3]{25})(x+1)(x^2-x+1)=0$ .

Here $x_1=-\sqrt[3]{5} , x_2=-1$ and you can sheck whether quadratic trinomials have real roots:

1. $D_1=(-\sqrt[3]{5}) ^2-4\cdot \sqrt[3]{25}=\sqrt[3]{25} -4\sqrt[3]{25} =-3\sqrt[3]{25}$ .

2. $D_2=(-1)^2-4\cdot 1=1-4=-3$ .

This means that quadratic trinomials don't have real roots.

Answer: $x_1=-\sqrt[3]{5} , x_2=-1$

If you need complex roots, then

$x_{3,4}=\dfrac{\sqrt[3]{5}\pm i\sqrt{3\sqrt[3]{25}}}{2} ,\\ \\x_{5,6}=\dfrac{1\pm i\sqrt{3}}{2}$ .

6 0

3 years ago

 −   −      =     10 8

san4es73 [151]

Answer:

ANSWER might be 6

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2 years ago

Please help asap 30 pts

tatiyna

B. By solving for x, you get x=8.39,x=-2.39.

5 0

3 years ago

BRAINLIEST AND A LOTTT OF POINTS, PLEASE HELP

damaskus [11]

Answer:

Wil low

Tun nel

Bri lli ant

Di ffi cult

Exa gge rate

Fit ter

Plan ner

Step-by-step explanation:

I gave you seven just in case.

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2 years ago