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2 years ago

Evaluate log12 - log4 + log5 and can you explain it to me?

1 answer:

7 0

Remember some simple log rules

$log(a)+log(b)=log(ab)$
and
$log(a)-log(b)=log(\frac{a}{b})$

work from left to right

$log(12)-log(4)+log(5)=$
$log(\frac{12}{4})+log(5)=$
$log(3)+log(5)=$
$log(3*5)=$
$log(15)$

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Whats the answer to this?

8_murik_8 [283]

6^7
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6^5
===
answer would be
6^2

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3 years ago

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The sum of 1/11 and 1/15 is closest to....

Afina-wow [57]

$\frac{1}{11}+\frac{1}{15}=\frac{1\cdot15}{11\cdot15}+\frac{1\cdot11}{15\cdot11}=\frac{15}{165}+\frac{11}{165}=\frac{15+11}{165}=\frac{26}{165} < \frac{1}{2}\\\\\frac{1}{11}+\frac{1}{15}\approx0$

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2 years ago

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Question 5 (1 point) 5 The Cool Shirts company prints personalized designs on T-shirts. The cost y for x shirts with the same de

Sergeeva-Olga [200]

Answer:

y = 8x + 25

Step-by-step explanation:

Using the coordinates (10, 105) and (20, 185)

The standard linear equation is expressed as y = mx+c

m is the slope

c is the intercept

m = 185 - 105/20-10

m = 80/10

m = 8

Get the y-intercept

Since y = mx+c

105 = 8(10) + c

105 = 80 + c

c = 105 - 80

c = 25

Get the required equation

Recall that y = mx+c

y = 8x + 25

Hence the required equation is y = 8x + 25

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2 years ago

Help please with this

Elena-2011 [213]

Negative reciprocals of each other

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2 years ago

Tina covers the floor of a room with carpeting. She uses carpet squares that measure one foot on each side. How many carpet squa

gizmo_the_mogwai [7]

Answer:

She need 96 square feet carpet to cover the room.

Step-by-step explanation:

Given:

Tina covers the floor of a room with carpeting. She uses carpet squares that measure one foot on each side.

Now, to find carpet squares does she need to cover a room that 8 feet wide by 12 feet long.

So, the dimensions of room are:

Length = 12 feet.

Width = 8 feet.

Now, getting the area by putting formula:

Area of room = Length × width

$Area\ of\ room = 12\times 8$

$Area\ of\ room=96\ square\ feet.$

Therefore, she need 96 square feet carpet to cover the room.

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2 years ago