All categories

2 years ago

Which expression is NOT equal to 729? 3 × 3 × 3 × 3 × 3 × 3 6,3 9 × 9 × 9 36

Mathematics

1 answer:

suter [353]2 years ago

8 0

Answer:

Rewrite as an equation.

log

9(729)=x

Rewrite

log

9(729)=x

in exponential form using the definition of a logarithm. If

x and b

are positive real numbers and b

does not equal 1, then log b(x)=y is equivalent to by=x. 9x=729

Create expressions in the equation that all have equal bases.

(32)x=3

Rewrite

(32)x as 32x. 32x=36

Since the bases are the same, then two expressions are only equal if the exponents are also equal.

2 x 3=6

Solve for

x.x=3

The variable x

is equal to

3.3

Step-by-step explanation:

You might be interested in

•

Monica [59]

The vertical line that goes through the vortex

6 0

3 years ago

Plz help me with this question!

VARVARA [1.3K]

Answer:

the answer is y=-1/6x-1

8 0

2 years ago

Read 2 more answers

Create an inequality for the situation below.<br><br> Please help!!

OlgaM077 [116]

1 gallon of milk costs 0.50 more than 5 times a gallon of water.

From that information milk is 5x +0.50 the cost of water.

The cost of milk is $3.75, so now we have:

3.75 = 5x + 0.50

Subtract 0.50 from each side:

3.25 = 5x

Divide both sides by 5:

X = 3.25 / 5

x = 0.65

The cost of water = $0.65

8 0

2 years ago

HELP QUICK HAVE 5 MINS

Illusion [34]

m = 4b+3 mikes age

m +b <138 mike +brother less than 138

4b+3+b<138

5b +3< 138

b< 135

b <27

The oldest the brother can be is 26

4 0

2 years ago

In a certain year, brand A of heart-rate watch cost $39.99 and brand B cost $59.99. A nonprofit community health organizatio

Oksi-84 [34.3K]

Answer:

Brand A = 21 heart-rate watches.

Brand B = 13 heart-rate watches.

Step-by-step explanation:

Let A be the number of Brand A heart watches and B be the number of Brand B heart watches.

We have been given that a nonprofit community health organization purchased 34 heart-rate watches for use at a wellness center.

We can represent this information in an equation as:

$A+B=34...(1)$

We have been given that in a certain year, brand A of heart-rate watch cost $39.99 and brand B cost $59.99 and the organization spent $1619.66 for the watches.

We can represent this information in an equation as:

$39.99*A+59.99*B=1619.66...(2)$

We will use substitution method to solve our system of equations.

From equation (1) we will get,

$A=34-B$

Substituting $A=34-B$ in equation(2) we will get,

$39.99*(34-B)+59.99*B=1619.66$

$1359.66-39.99*B+59.99*B=1619.66$

$-39.99*B+59.99*B=1619.66-1359.66$

$20*B=260$

$B=\frac{260}{20}$

$B=13$

Therefore, the organisation purchased 13 heart-rate watches of brand B.

Now let us substitute B=13 in equation (1).

$A+13=34$

$A+13-13=34-13$

$A=21$

Therefore, the organisation purchased 21 heart-rate watches of brand A.

8 0

2 years ago