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Aleks04 [339]
3 years ago
13

In which of the following drawings is DE parallel to AC?

Mathematics
1 answer:
Akimi4 [234]3 years ago
5 0

Answer:

its option D because the lines are not even close to crossing.

Step-by-step explanation:

hope this helps :)

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Find the difference between the terms a10 of an arithmetic sequence and a geometric sequence, both of which
Nady [450]

Answer:-288

Step-by-step explanation:

Given

First term a_0  is common for both AP and GP

For AP

a_2=4=a_0+2d---1

a_4=12=a_0+4d----2

From 1 & 2 we get

d=4

a_0=-4

a_{10} for AP

a_{10}=a_0+10d=-4+10\times 4=36

For GP

4=a_0r^2----3

12=a_0r^4----4

From 3 & 4 we get

3=r^2

r=\sqrt{3}

a_0=\frac{4}{3}

For a_{10}=\frac{4}{3}\times 3^5=324

AP_{a_{10}}-GP_{a_{10}}=36-324=-288

3 0
3 years ago
The robber stole 280 dollars' worth of one-dollar bills. He also stole some 100-dollar bills, 50-dollar bills, and 20-dollar bil
salantis [7]
E, because he is stealing everything, meaning he has a net profit. So, you would add everything. Since he 280 $1 bills, he just stole $280 which is a definite quantity, so we don't need a variable for it. Since everything else are indefinite quantities, we need variables (x, y, z). But, yeah, E should be the answer.
6 0
3 years ago
Using the triangle theorem solve this triangle.​
Blizzard [7]

Answer:

8 and 8√3

Step-by-step explanation:

Sin90 = b/8

1 x 8 =b

b=8

Tan 30 = 8/a

1/√3 = 8/a

a=8√3

3 0
3 years ago
Read 2 more answers
The sides of a triangle are x , x +1 , 2 x -1 and its area is x root of 10 .Find the value of x.
VARVARA [1.3K]


Ok, I'm going to start off saying there is probably an easier way of doing this that's right in front of my face, but I can't see it so I'm going to use Heron's formula, which is A=√[s(s-a)(s-b)(s-c)] where A is the area, s is the semiperimeter (half of the perimeter), and a, b, and c are the side lengths.

Substitute the known values into the formula:

x√10=√{[(x+x+1+2x-1)/2][({x+x+1+2x-1}/2)-x][({x+x+1+2x-1}/2)-(x+1)][({x+x+1+2x-1}/2)-(2x-1)]}

Simplify:

<span>x√10=√{[4x/2][(4x/2)-x][(4x/2)-(x+1)][(4x/2)-(2x-1)]}</span>

<span>x√10=√[2x(2x-x)(2x-x-1)(2x-2x+1)]</span>

<span>x√10=√[2x(x)(x-1)(1)]</span>

<span>x√10=√[2x²(x-1)]</span>

<span>x√10=√(2x³-2x²)</span>

<span>10x²=2x³-2x²</span>

<span>2x³-12x²=0</span>

<span>2x²(x-6)=0</span>

<span>2x²=0 or x-6=0</span>

<span>x=0 or x=6</span>

<span>Therefore, x=6 (you can't have a length of 0).</span>

6 0
3 years ago
Solve the inequality 2ax-3&lt;4x+5a for all possible values of the parameter a
olga_2 [115]

Answer:

Step-by-step explanation:

2ax−3<4x+5a

Step 1: Add -5a to both sides.

2ax−3+−5a<5a+4x+−5a

2ax−5a−3<4x

Step 2: Add 3 to both sides.

2ax−5a−3+3<4x+3

2ax−5a<4x+3

5 0
3 years ago
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