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elixir [45]
3 years ago
9

Solve the system by substitution. 7x-3y=-25 4x+5=y Simplify ( , )

Mathematics
1 answer:
Lynna [10]3 years ago
3 0

Answer:

nznsjisisjnsnaksodood

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A triangle with two congruent sides is called a(n) triangle.
mars1129 [50]

A triangle with 2 congruent sides is an <u>ISOSCELES</u> triangle.

Answer: Isosceles

FYI: A triangle with 3 congruent sides is an equilateral triangle.

4 0
3 years ago
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3. Three years ago, Jane was three times as old as Alice. In two years time, the sum of their ages will be 62. Determine their p
anzhelika [568]
3 yrs ago:

Alice - x 
Jane - 3x 

Fast forward 2 years... 1 year ago: 

Sum of their ages = 62


Equation to solve: x + 3x = 62 
                                4x = 62 
                               -----  -----
                                 4      4
 
                                 x = 15.5 

From this, we can deterime that Alice is 15 1/2 years old. 

Then, plug in 15.5 for x in 3x to find Jane's age. 

15.5 × 3 = 46.5

From this, we can determine that Jane is 46 1/2 years old. 


I hope this helps you to understand this problem better.


5 0
4 years ago
Read 2 more answers
Find the "explicit" formula, f(n) of this sequence: 2, 5, 12.5, 31.25,...
andriy [413]
F(n) of the sequence is: 2.5
2 x 2.5= 5
5 x 2.5= 12.5
Etc.
6 0
2 years ago
Read 2 more answers
Please answer as soon as possible, im in a bit of a hurry.
12345 [234]

Easy bruh

Answer:

6w^3

Step-by-step explanation:

It can't be any answer with cubed in it because that would be volume. So, A and C magically vanish. If we know that the length of a cube is w that means that all sides are w. There are six faces on a cube. If we want to find surface area we will have to add up the area of all faces. the area of one face will be w^2. We multiply that number by six and we get 6w^3.

4 0
3 years ago
Read 2 more answers
If records indicate that 15 houses out of 1000 are expected to be damaged by fire in any year, what is the probability that a wo
nordsb [41]

Answer: 0.01708

Step-by-step explanation:

Given : If records indicate that 15 houses out of 1000 are expected to be damaged by fire in any year.

i.e. the probability that house damaged buy fire in a year : p=\dfrac{15}{1000}=0.015

The formula for binomial distribution is given by :-

^{n}C_xp^x(1-p)^{n-x}

Now, the probability that a woman who owns 14 houses will have fire damage in 2 of them in a year (put n=14 and x=2), we get

^{14}C_2(0.015)^2(1-0.015)^{14-2}\\\\=\dfrac{14!}{2!(14-2)!}(0.015)^2(0.985)^{12}\\\\=0.0170788520518\approx0.01708

Hence, the required probability = 0.01708

4 0
3 years ago
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