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leva [86]
2 years ago
8

What is the value of x? (2x-54) (16)°

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
7 0

Answer:

23

Step-by-step explanation:

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the parking space outside sky towers measures 2x-1 meters x+2 meters . what is rhe cost of cleaning the parking area if the clea
antiseptic1488 [7]

Answer:

Rs 100x² + 150x - 100

Step-by-step explanation:

Area of the parking space = Length * Width

Area of the space = (2x-1)(x+2)

Expand

Area of the space = 2x² + 4x - x - 2

Area of the space = (2x²+3x - 2) sq. m

Since 1sq.m = Rs 50'

(2x²+3x - 2) sq. m= z

z = 50 (2x²+3x - 2)

z = 100x² + 150x - 100

hence the cost of the parking spsce is Rs.100x² + 150x - 100

4 0
3 years ago
Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)
Salsk061 [2.6K]
First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation
 
6 0
3 years ago
Read 2 more answers
Suppose a and b are independent events if p(a/b)=.25 and p(b)=.6 what is P(AnB)?
Talja [164]

Answer:

0.15

Step-by-step explanation:

<u>Independent Probabilities Formula</u>

P(A | B) = P(A) = P(A ∩ B) ÷ P(B)

P(A | B) = 0.25

P(A) = 0.25

P(B) = 0.6

If P(A) = P(A ∩ B) ÷ P(B)

P(A ∩ B) = P(A) × P(B)

P(A ∩ B) = 0.25 × 0.6

P(A ∩ B) = 0.15

4 0
3 years ago
An arithmetic sequence is given below.
Mashcka [7]
Given that a_1=24 and a_2=17, if a_n is an arithmetic sequence, then the common difference between successive terms is d=a_2-a_1=17-24=-7.

You then have

a_2=a_1+d
\implies a_3=a_2+d=a_1+2d
\implies a_4=a_3+d=a_1+3d
\implies \cdots\implies a_n=a_{n-1}+d=\cdots=a_1+(n-1)d

So the explicit formula for the nth term is

a_n=24-7(n-1)
3 0
3 years ago
Clare says’ this classroom is 11 m long in metres longer than a year so if I measure the length of the classroom I will get less
Vlad [161]

Answer:

No I don't agree with Clare.

You will get more than 11 yards

Step-by-step explanation:

4 0
3 years ago
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