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2 years ago

Help pls hello pls hello hello

Mathematics

2 answers:

ipn [44]2 years ago

5 0

Basically, we end up with a false statement like
0=3
or something like that
so simplfy each

A.
-5+8x-9=3(x+3)
8x-14=3x+9
minus 3x both sides
5x-14=9
add 15
5x=23
we see we will get a solution

B.
distribute
-12+6x=-12+6x
we can see there are infinite solutions

C.
6-2(3-2x)=-4(3-x)
6-6+4x=-12+4x
0+4x=-12+4x
minus 4x both sides
0=-12
false
here is our answer

C is the one with no solution

Novay_Z [31]2 years ago

5 0

Answer:

c has no answer...

have a great day!

Step-by-step explanation:

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Lilly nearly arranges 35 radio controlled cars in 5 rows on the shelf find the number of cars placed in each row

Nastasia [14]

Answer:

7 cars per row

Step-by-step explanation:

8 0

2 years ago

Logarithms:

bogdanovich [222]

Answer:

2^45 or ≈ 3.5*10^13

Step-by-step explanation:

Given equation

f(t) = 2^(kt)
f - number of cells, t - number of months, k- coefficient

We got 32 cells in the first month. It means:

t = 1, f(1) = 32

Using these numbers we can find the coefficient k:

32 = 2^(k*1)
2^5 = 2^k
k = 5

Then the equation becomes:

f(t) = 2^(5t)

Average time is 9 months, we can calculate the number of cells:

f(9) = 2^(5*9) = 2^45 ≈ 3.5*10^13

5 0

3 years ago

If side A is 10 inches long, and side B is 24 inches, find the length of the unknown side.

Roman55 [17]

Step-by-step explanation:

Right Triangles and the Pythagorean Theorem. The Pythagorean Theorem, a2+b2=c2, a 2 + b 2 = c 2 , can be used to find the length of any side of a right triangle.

4 0

2 years ago

The cashier service time at the local branch of the Rivertown bank has an exponential distribution with a mean of 2.5 minutes. W

aleksandrvk [35]

Answer: d. .2474.

Step-by-step explanation:

Given : The cashier service time at the local branch of the Rivertown bank has an exponential distribution with a mean of 2.5 minutes.

The cumulative distribution function for exponential distribution is :-

$P(X\leq x)= 1-e^{-\frac{x}{\lambda}}$

, where $\lambda$ = Mean of the distribution.

The probability that the service time is between 2 and 4 minutes will be :

$P(2\leq X \leq 4)=P(X\leq4)-P(X\leq 2)\\\\= (1-e^{\frac{-4}{2.5}})-(1-e^{\frac{-2}{2.5}})\\\\=e^{\frac{-2}{2.5}}-e^{\frac{-4}{2.5}}\\\\=0.449328964117-0.201896517995\\\\=0.247432446123\approx0.2474$