All categories

3 years ago

What would you do first to solve this problem? 7x4 [ (6+3) -4]

Mathematics

2 answers:

mr Goodwill [35]3 years ago

7 0

Answer:

do whats in the parenthesis first

Step-by-step explanation:

so like this

7x^4[(6+3)-4]

7x^4[9-4]

7x^4+5

If brainiest is earned its greatly appreciated

anastassius [24]3 years ago

3 0

Answer:

33 or 63

Step-by-step explanation:

6 +3= 9

7 x 4 = 28

9 - 4 = 5

28 + 5 = 33

9- 4 = 5

5 + 4 = 9

7 x 9 = 63

You might be interested in

Two candles of equal length are lit at the same time. One candle takes 6 hours to burn out, and the other takes 9 hours to burn

GuDViN [60]

Answer:

4.5 hours

Step-by-step explanation:

Given: One candle takes 6 hour to burn out

Other candle takes 9 hours to burn out.

Lets assume the time at which slower burning candle be exactly twice as long as the faster burning one be "x". and lenght of candle initially be "1".

Taking one candle as Candle A

Other candle as Candle B.

As given both the candle is of equal length.

Now, putting up the equation to find the time at which lenght of candle B is twice as candle A.

∴ Length of candle= $2(1-\frac{x}{6} )= (1-\frac{x}{9})$

Solving it knowing length is constant and using distributive property of multiplication

⇒ $2-\frac{2x}{6} = 1-\frac{x}{9}$

subtracting both side by 2

⇒ $\frac{-2x}{6} = -1 -\frac{x}{9}$

Adding both side by $\frac{x}{9}$

⇒ $-\frac{2x}{6} +\frac{x}{9} = -1$

Taking LCD of 9 and 6 as 18

⇒ $\frac{-2x\times 3+x\times 2}{18}= -1$

Multiplying both side by 18

⇒ $-6x+2x= -18$

⇒ $-4x= -18$

Multiplying both side by -4

⇒ x= $\frac{-18}{-4}= \frac{9}{2}$

∴ x= 4.5 hours

Hence, 4.5 hours is the time at which slower burning candle be exactly twice as long as the faster burning one.

5 0

3 years ago

Tulio will invest $1,000,000 at 5% annual interest. Determine how much money will Tulio have after 10 years if the interest is

balu736 [363]

Answer:

$1,500,000

Step-by-step explanation:

Given

Principal = $1,000,000

Rate = 5%

Time = 10years

Interest = PRT/100

Interest = 1000000*5*10/100

Interest = 100000*5

Interest = $500,000

Amount after 10years = $1,000,000+ $500,000

Amount after 10years = $1,500,000

5 0

4 years ago

What is the equation of a line that passes through the point (6, 1) and is perpendicular to the line whose equation is y=−2x−6 ?

GrogVix [38]

y = 1/2x - 2

Look at Desmos Math pic i sent.

8 0

3 years ago

Read 2 more answers

Jennifer earns $5.50 an hour for babysitting.edward earns 1.8 times as much for mowing lawns.explain how you can tell whose hour

algol [13]

$5.50 * 1.8 = $9.90 (Edward)

$50 / $5.50 = 9.09 rounded to make 10 hours (Jennifer)
$50 / $9.90 = 5.05 rounded to make 6 hours (Edward)
so Jennifer needs 10 hours
Edward needs 6 hours
:)

3 0

3 years ago

The value of V x10, when x = -2, can be

zalisa [80]

Answer:

the answer of this problem is

a=1 and b=-8

7 0

4 years ago