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2 years ago

A a migrating bird flies 384 miles in 12 hours how many hours does it flies in 5 hours

Mathematics

1 answer:

shusha [124]2 years ago

4 0

Divide 384 by 12 then multiply it by 5 to give you 160

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I'm really confused about this question about Solving Systems by Elimination

velikii [3]

Answer:

x=10

y=2

Step-by-step explanation:

1)add the equations and find what x is.

x-y=8

+x+y=12

—————

2x=20

— —

2 2

x=10

3)fill in x for the second equation.

x+y=12

since x=10,replace x with 10.

10+y=12.

subtract 19 from both sides.

10+y=12

-10 -10

—————-

y=2

4 0

3 years ago

Charisse is purchasing a leather handbag for $123.85, including tax. She gives the sales clerk 1 fifty-dollar bill, 2 twenty-dol

jek_recluse [69]

6.15 hope this helped

7 0

3 years ago

Read 2 more answers

If a tank holds 5000 gallons of water, which drains from the bottom of the tank in 40 minutes, then Torricelli's Law gives the v

pochemuha

Answer:

V'(t) = $-250(1 - \frac{1}{40}t)$

If we know the time, we can plug in the value for "t" in the above derivative and find how much water drained for the given point of t.

Step-by-step explanation:

Given:

V = $5000(1 - \frac{1}{40}t )^2$ , where 0≤t≤40.

Here we have to find the derivative with respect to "t"

We have to use the chain rule to find the derivative.

V'(t) = $2(5000)(1 - \frac{1}{40} t)d/dt (1 - \frac{1}{40}t )$

V'(t) = $2(5000)(1 - \frac{1}{40} t)(-\frac{1}{40} )$

When we simplify the above, we get

V'(t) = $-250(1 - \frac{1}{40}t)$

If we know the time, we can plug in the value for "t" and find how much water drained for the given point of t.

4 0

3 years ago

Can you help me figure out if my this answer is correct...<br> 3(4x+ 5y +6)= 12×+15y+18

svetlana [45]

Answer: Yes, well done.

Step-by-step explanation:

$3(4x+5y+6)=12x+15y+18\\(3*4x)+(3*5y)+(3*6)=12x+15y+18\\12x+15y+18=12x+15y+18$

6 0

3 years ago

What percent of 77.5 is 28.52 ?

Fantom [35]

I would say 36.8
But I am it sure

8 0

3 years ago