All categories

1 year ago

Simplify this exponential expression: (-49) 2/5

Mathematics

1 answer:

ioda1 year ago

4 0

Answer:

I think it is 12 4/5

Step-by-step explanation:

hope this helps if not let me now

You might be interested in

Choose all that state the correct unit rate for each situation. 100 POINTS ASAP K12

Lorico [155]

Answer:

Please see the answers below:

Step-by-step explanation:

The wrong answers are deleted only the correct answers are listed below:

Ryan earns $45 for 5 hours of work. The unit rate is $9 for 1 hour.

Jenna can drive her car 110 miles on 5 gallons of gasoline. The unit rate is 22 miles per gallon.

Claire saves $320 in 16 weeks. The unit rate is $20 per week.

% increase in price of gas = [(New Price - Original Price) / Original Price] x 100

% increase in price of gas = [($2.48 - $2.18) / $2.18] x 100

% increase in price of gas = [$0.3 / $2.18] x 100

% increase in price of gas = 13.76%

7 0

2 years ago

Who want too talk too me I am bored <br> Thanks again ❤️✌❤️❤️❤️❤️

VMariaS [17]

I shall have a conversation with you, if you don’t mind

5 0

3 years ago

Read 2 more answers

PLEASEE HELP HURRYYYYYY PLEASE

olga2289 [7]

Answer:

12.5

Step-by-step explanation:

We can use ratios to solve

4 4+6

---- = ----------

5 AC

4 10

---- = ----------

5 AC

Using cross products

4 * AC = 5*10

4AC = 50

Divide by 4

AC = 50/4

AC =12.5

5 0

2 years ago

Find the amount of empty space within a cylinder containing three solid spheres, where each sphere has a radius of 3 cm. (Volume

aalyn [17]

Answer : The correct option is, (A) $54\pi cm^3$

Step-by-step explanation :

First we have to calculate the volume of cylinder.

Formula used:

Volume of cylinder = $\pi r^2h$

where,

r = radius = 3 cm

h = height = 18 cm (We are assuming that 3 solid spheres stacked to each other = 3 × diameter of each sphere = 3 × 2 × 3 = 18)

Volume of cylinder = $\pi (3cm)^2\times (18cm)$

Volume of cylinder = $162\pi cm^3$

Now we have to calculate the volume of 3 solid spheres.

Formula used:

Volume of 3 spheres = $3\times \frac{4}{3}\pi r^3$

Volume of 3 spheres = $4\pi r^3$

Volume of 3 spheres = $4\pi (3)^3$

Volume of 3 spheres = $108\pi cm^3$

Now we have to calculate the amount of empty space within a cylinder.

Amount of empty space within a cylinder = Volume of cylinder - Volume of 3 spheres

Amount of empty space within a cylinder = $162\pi cm^3-108\pi cm^3$

Amount of empty space within a cylinder = $54\pi cm^3$

Therefore, the amount of empty space within a cylinder is, $54\pi cm^3$

5 0

3 years ago

The diagram above shows a circle with centre O and radius 25 cm.

Salsk061 [2.6K]

Answer:

Step-by-step explanation:

Notice that KL = LM and PQ = QR since OL and OQ are perpendicular to both KM and PR.

It follows that QR = (1/2) PR = 20 cm. We also know that MR = 21.

Now in order to solve the problem we just need OQ=OL

$OQ^2=OR^2-QR^2= 25^2-20^2 =225\\OQ=15$

Therefore the perimeter of the pentagon is

$OL+LM+MR+RQ+Q)\\= 15+20+21+20+15= 91$

8 0

3 years ago