Please help please please help please

PLEASE HELP!!! Write the expression as a single logarithm. 3 log(4) + log(7)

anygoal [31]

Answer:

log (448)

Step-by-step explanation:

3 log(4) + log(7)

We know that a log b = log b^a

3 log(4) + log(7)

log 4^3 + log 7

log 64 + log 7

We know that log a + log b = log (a*b)

log (64 *7)

log (448)

3 0

2 years ago

Read 2 more answers

Why is the letter i the square root of negative one ( <img src="https://tex.z-dn.net/?f=%5Csqrt%7B-1%7D" id="TexFormula1" title=

Alja [10]

Answer:

It is an imaginary number.

Step-by-step explanation:

The square root of negative one is "i," the imaginary number. This concept is immensely useful in mathematics, as it allows for there to be square roots of negative numbers, which is otherwise not possible using only real numbers.

Any number that includes a negative square root is called an imaginary number. For example, the square root of -9 equals 3i, an imaginary number. When an imaginary number and a real number are combined, for example 2 + 3i, this is called a complex number. Complex numbers have many real world applications, including manipulating sound waves and calculating electrical currents.

3 0

2 years ago

I need your help guys !!!!!!!!

Ber [7]

$\bold{\huge{\blue{\underline{ Solution}}}}$

$\bold{\underline{ We \: have \:given \: that, }}$

Distance between the house and tower is 35 m
The height of the tower is 60 m
The height of the house is 25 m

$\bold{\underline{ Now}}$

Height of the house is 25m

$\bold{\underline{ So, }}$

$\sf{ CE = 25m }$

Therefore,

$\sf{ AB = AD - CE }$

$\sf{ AB = 60 - 25 }$

$\sf{ AB = 35 m }$

Now, In Right angled ABC

$\bold{tan Φ =}{\bold{\frac{ AB}{BC}}}$

$\bold{tan Φ =}{\bold{\frac{ 35}{35}}}$

$\bold{ tan Φ = 1 }$

$\bold{ tan Φ = 45 °}$

$\sf{\red{Hence, \: The \:angle \:of \:depression\: is \:45°}}$

7 0

1 year ago

Please help and show work if you can

laila [671]

Answer:

25. a = 60

26. a = 17

Step-by-step explanation:

In these two problems we are going to use a property of parallelograms that says: opposite angles have equal measure

so we have

25.

$6a+10=130\\\\6a=130-10\\\\6a=120\\\\a=60$

and for 26 we have

$4a-4=2a+30\\\\4a=2a+30+4\\\\4a=2a+34\\\\4a-2a=34\\\\2a=34\\\\a=17$

6 0

2 years ago

What is the volume of the box?

Agata [3.3K]

To find the volume of the box you have to do the formula for volume

the formula for volume is lxwxh aka length x width x height

so first you have to do 3/4 x 1/2

3/4 x 1/2 = 3/8

Next, you have to do 3/8 x 1/4

3/8 x 1/4 = 3/32

so the volume of the box is 3/32

HOPE THIS HELPS!!!

6 0

2 years ago

Read 2 more answers