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Rasek [7]
3 years ago
15

Please show work on how to do this​

Mathematics
1 answer:
Irina-Kira [14]3 years ago
5 0

Answer:

  • - 2.71

Step-by-step explanation:

  • 2· 4^{v + 4} + 20 = 32
  • 2· 4^{v + 4} = 12
  • 4^{v + 4} = 6
  • (v + 4) log 4 = log 6
  • v + 4 = log 6 / log 4
  • v + 4 = 1.29  (<em>rounded</em>)
  • v = 1.29 - 4
  • v = - 2.71
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What happens to the value of the expression 80-2r as r decreases?
Ghella [55]

Answer:The value of the expression increases as r decreases.

Step-by-step explanation:

To find : What happens to the value of the expression as r decreases?

Given Expression: 80-2r

We check for different value of r as decreasing order,

r        80-2r

5        80-10=70

4        80-8=72

3        80-6=74

2        80-4=76

1         80-2=78

As r decreases the value of expression increases.

Therefore, the value of the expression increases as r decreases.

Hope this helps!

8 0
3 years ago
Read 2 more answers
The tape diagram represents an equation.​
Lena [83]

Answer:  w+1.3 = 2.7

Reason:

The smaller pieces (w and 1.3) combine to form the larger piece (2.7)

To find w, subtract 1.3 from both sides to get 1.4

1.4+1.3 = 2.7

5 0
2 years ago
Suppose that A = PDP-1 . Prove that det(A) = det(D)
daser333 [38]

Answer:

Check.

Step-by-step explanation:

To prove it we need to know that  for two matrices A and B we have that:

det(AB) = det(A)*det(B) and det(A^{-1}) = \frac{1}{det(A)}. Now:

A = PDP^{-1}

det(A) = det(PDP^{-1})

det(A) = det(P)*det(D)*det(P^{-1})

det(A) = det(P)*det(D)*\frac{1}{det(P)}

det(A) = det(P)*\frac{1}{det(P)}*det(D)

det(A) = det(D).

5 0
3 years ago
Un depósito se llena de agua a diario para dar de beber a los animales de una granja. Según requerimiento se sacaron 3/8 del agu
Nostrana [21]

Answer:

5/24

Step-by-step explanation:

The question in English is

A tank is filled with water daily to give water to the animals on a farm. As required, 3/8 of the water was taken from the tank to give to the horses and 1/3 of what was left in the tank was given to the pigs. The remainder of the tank was distributed in two equal amounts to give water to the birds and pets. What is the fraction of the water that pets receive to drink?

1) 3/8 of the water was taken from the tank to give to the horses

At this point in the tank there are 1-3/8=5/8 of the water of the tank

2) 1/3 of what was left in the tank was given to the pigs

At this point in the tank there are

(1-1/3)*5/8

(2/3)(5/8)=10/24 of the water of the tank

3) The remainder of the tank was distributed in two equal amounts to give water to the birds and pets

The remainder is equal to 10/24

divided by 2

(10/24)/2=10/48

4) The fraction of the water that pets receive to drink is 10/48

simplify

10/48=5/24

8 0
3 years ago
100 POINTS
likoan [24]

Answer: True because when you divide both sides by 2 that would be the right equation.

Step-by-step explanation:

3 0
3 years ago
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