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4 years ago

2log_(4)(-8.75)+6log_(4)(6.81)-5log_(4)(11.83)

Mathematics

1 answer:

DochEvi [55]4 years ago

5 0

Answer:

I think it would be -21.55 if you are rounding to the hundredths

Step-by-step explanation:

Put it in the calculator!! Hope I helped you! Sorry if I make you get it wrong!!

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Please solve this puzzle

Natali5045456 [20]

Answer:

a = 25 m²

b = 5 m

c = 7.94 m

d = 35.73 m²

Code: H I A B

Step-by-step explanation:

Formulae

Pythagoras’ Theorem: $a^2+b^2=c^2$

(where a and b are the legs, and c is the hypotenuse, of a right triangle)

Area of a square = x² (where x is the side length)

------------------------------------------------------------------------------------------------------

Assuming that all the quadrilaterals are squares.

Side length of blue square with area 16 m² = √16 = 4 m

Side length of yellow square with area 9 m² = √9 = 3 m

Use Pythagoras' Theorem to find the length of b:

$\implies 4^2+3^2=b^2$

$\implies b^2=25$

$\implies b=\sqrt{25}$

$\implies b=5\: \sf m$

Now we have found length b, we can find area a:

$\textsf{Area a}=b^2=5^2=25\: \sf m^2$

Side length of purple square with area 144 m² = √144 = 12 m

Side length of green square with area 81 m² = √81 = 9 m

Use Pythagoras' Theorem to find the length of c:

$\implies 9^2+c^2=12^2$

$\implies c^2=63$

$\implies c=\sqrt{63}$

$\implies c=3\sqrt{7}$

$\implies c=7.94\: \textsf{(nearest hundredth)}$

Now we have found length d, we can find area d:

$\textsf{Area d}=\dfrac{1}{2}(9)(7.94)=35.73\: \sf m^2$

Code: H I A B

3 0

2 years ago

Read 2 more answers

For number 1. The pls give me the answer

crimeas [40]

I got:
-1/2
-1
-4
............................

6 0

3 years ago

Canadian provinces by population density

Savatey [412]

Not quite sure what the question being asked here is.

5 0

3 years ago

When a number is decreased by 54%, the result is 28. What is the original number to

Brums [2.3K]

Answer:

x = 60.9

Step-by-step explanation:

Let x represent the number

x - 54%x = 28

x - 0.54x = 28

0.46x = 28

Divide both sides by 0.46(coefficient of x)

x = 28/0.46

x = 60.86

to the nearest tenth

x = 60.9

6 0

4 years ago

How do you do letter b?

Nutka1998 [239]

Answer:

0.8632

0.8696

Step-by-step explanation:

Your answer is accurate, but it's not the most precise option.

f(x) is decreasing and concave up on the interval. Therefore, trapezoidal rule will give us an area greater than the actual area, but closer than left-hand rule.

If f(x) were a straight line, then midpoint rule would give us the same area as trapezoidal rule. However, since f(x) is concave up, the midpoint is less than the average of the endpoints. So midpoint rule will give us an area less than the actual area, but closer than right-hand rule.

8 0

3 years ago