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3 years ago

Can someone help me do this I'm not good at this kind of math

Mathematics

1 answer:

Finger [1]3 years ago

5 0

hope this helps i did this instead of my ap psych work haha

i didnt rlly check my answers so i hope this are correct <3

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Find the area to the combined rectangle

ohaa [14]

The area is 234 meters

8 0

3 years ago

2.2 Evaluating Functions Practice

Tju [1.3M]

Answer:

A = 11

B = -4

C = 7

D = 27

Step-by-step explanation:

5 0

3 years ago

The sum of 4 consqutive terms in an A P is 32 and the ratio of the product of the first and the last term of the product of two

Aleksandr [31]

Answer:

Four consecutive numbers are 2, 6, 10 and 14

Step-by-step explanation:

15(a² - 9d²) = 7(a² - d²)

15a² - 135d² = 7a² - 7d²

15a² - 7a² = 135d² - 7d²

8a² = 128d²

Putting the value of a = 8 in above we get.

8(8)² = 128d²

128d² = 512

d² = 512/128

d² = 4

d = 2

So, the four consecutive numbers are

8 - (3*2)

8 - 6 = 2

8 - 2 = 6

8 + 2 = 10

8 + (3*2)

8 + 6 = 14

3 0

3 years ago

Explain why an elevator with 3 people in it is less dense with an elevator with 50 people in it

Harrizon [31]

Answer:

it has a lower mass/volume ratio

Step-by-step explanation:

Density is the ratio of mass to volume. An elevator will have the same volume, regardless of the number of people. The mass will increase with the number of people.

An elevator with 50 people in it will have a higher mass/volume ratio than an elevator with 3 people in it. Hence the latter is less dense.

<em>Additional comment</em>

50 persons would require an industrial elevator of perhaps 10,000 pound load capacity. There might be safety issues with carrying that many people.

7 0

3 years ago

Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it

Alexeev081 [22]

We can solve this problem by calculating the individual rate of working and equate it to their total rate of working.

If Dave can complete a sales route in 4 hours, then his working rate is

$\frac{1}{4}$

Also, if James can do it in 5 hours, then his working rate is

$\frac{1}{5}$

Let
$x$
be the hours that both will use to complete the sales route,

Then rate at which both completes this task is
$\frac{1}{x}$

Meaning if we add their individual rates we should get

$\frac{1}{x}$

That is;

$\frac{1}{4} + \frac{1}{5} = \frac{1}{x}$

The LCM is
$20x$

So let us multiply through with the LCM.

$20x \times \frac{1}{4} + 20x \times \frac{1}{5} =20x \times \frac{1}{x}$

$5x + 4x = 20$

We simplify to get,

$9x = 20$

Dividing through by 9 gives;

$x = \frac{20}{9}$

$x = 2\frac{1}{9}$

Therefore the two will complete sales route in
$2 \frac{1}{9}$
hours.

3 0

3 years ago