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4 years ago

PLEASE HELP MEEE I'm failing and I need to pass:(

Mathematics

1 answer:

Dahasolnce [82]4 years ago

3 0

Answer:

girl/boy use photomath if ur failing or just use these.

Step-by-step explanation:

11. 5x^2-6x-12

12. 2x(4y+5x)

13.3y^2+16xy

if you need the rest use photomath I am sure it will come to the same answers I got.

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Julia rides her horse 18 km with a constant speed of 6km/hr and another 24 km with a constant speed of 12 km/hr. What is her ave

nlexa [21]

Answer:

8.4 km/hr.

Step-by-step explanation:

We have been given that Julia rides her horse 18 km with a constant speed of 6 km/hr.

Let us find the time taken by Julia to cover a distance of 18 km.

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

$\text{Time taken to cover 18 km}=\frac{18\text{ km}}{\frac{6\text{km}}{\text{hour}}}$

$\text{Time taken to cover 18 km}=\frac{18\text{ km}}{6}\times\frac{\text{hour}}{\text{km}}$

$\text{Time taken to cover 18 km}=\frac{18}{6}\times\text{hour}$

$\text{Time taken to cover 18 km}=3\text{ hour}$

We are also told that she rides another 24 km with a constant speed of 12 km/hr.

Let us find the time taken by Julia to cover a distance of 24 km.

$\text{Time taken to cover 24 km}=\frac{24\text{ km}}{\frac{12\text{km}}{\text{hour}}}$

$\text{Time taken to cover 24 km}=\frac{24\text{ km}}{12}\times\frac{\text{hour}}{\text{km}}$

$\text{Time taken to cover 24 km}=\frac{24}{12}\times\text{hour}$

$\text{Time taken to cover 24 km}=2\text{ hour}$

Since we know that $\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}$ .

Upon substituting our values in above formula we will get,

$\text{Julia's average speed}=\frac{18\text{ km}+24\text{ km}+}{3\text{ hour}+2\text{ hour}}$

$\text{Julia's average speed}=\frac{42\text{ km}}{5\text{ hour}}$

$\text{Julia's average speed}=\frac{8.4\text{ km}}{\text{ hour}}$

Therefore, Julia's average speed is 8.4 km per hour.

5 0

4 years ago

HELP ASAP!!!!!

aleksandr82 [10.1K]

Answer:

14 mph

Step-by-step explanation:

8 0

3 years ago

BRAINLIEST!Because he holds a degree in environmental science, Jared is the environmental inspector for a company that manufactu

kramer

Answer:

Yeah, the answer would be D, like I said in the comments.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Panat has assets that total $9,500. His liabilities total $1,900. Which expression will find Patrick's net worth?

kvv77 [185]

Answer:

Step-by-step explanation:

assets total - liabilities/deductions = net worth

his income is what his net worth it, but liabilities is what you dont have. its what you owe/need to pay/dont own. subtracting these two will give you your real net wroth.

3 0

4 years ago

This is my question<br> (-4b^3)(2b^5

Reil [10]

Answer:

$- 8{b}^{8}$

Step-by-step explanation:

$- 4 {b}^{3} \times 2 {b}^{5}$

For this question, just multiply all like terms.

$- 4 \times 2 = - 8$

${b}^{3} \times {b}^{5} = {b}^{3 + 5} = {b}^{8}$

Note that the b^3 and b^5 are just bunch of b multiplying with each other. So, that can be represented as adding the exponents.

$- 8 \times {b}^{8} = - 8 {b}^{8}$

Also, I intentionally calculated the like terms separately for your understanding. So, you can just write the answer directly after the question without the extra work shown above (unless the extra work is required).

8 0

4 years ago

PLEASE HELP MEEE I'm failing and I need to pass:(​

PLEASE HELP MEEE I'm failing and I need to pass:(