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ra1l [238]
2 years ago
11

Iron has a density of 7.87 g/cm^3. What is the mass of a block of iron that is 2cm x 10cm x 5cm?

Mathematics
1 answer:
Rufina [12.5K]2 years ago
3 0

Answer:

2x10x5

V = 100 cm3

D = 7.87 g/cm3

M = 7.87x100

= 787g

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The odometer on Ed's car shows 8,946 miles. The odometer on Beth's car shows 5,042 miles driven. Which car has traveled the most
kotegsom [21]

Answer:

since 8946 is more then 5042 we know ed has driven the most miles.

Step-by-step explanation:

6 0
2 years ago
Zach is 23 years old. zach's age is 3 years older than twice maya's age. let m represent maya's age. which equation can be used
Anna71 [15]
Z = 23
z = 2m + 3

23 = 2m + 3 <==
6 0
2 years ago
Read 2 more answers
What is the period of the function f(x)=sin(x/3) ?
vitfil [10]
<h3>Answer: 6pi radians</h3>

(this is equivalent to 1080 degrees)

======================================

Explanation:

f(x) = sin(x/3)

is the same as

f(x) = 1*sin( (1/3)(x-0) )+0

and that is in the form

f(x) = A*sin( B(x-C) )+D

The letters A,B,C,D are explained below

A = helps find the amplitude

B = 2pi/T, where T is the period

C = determines phase shift (aka left/right shifting)

D = determines vertical shift = midline

All we care about is the value of B as that is the only thing that is connected to the period T

--------

Compare f(x) = 1*sin( (1/3)(x-0) )+0 with f(x) = A*sin( B(x-C) )+D and we see that B = 1/3, so,

B = 2pi/T

1/3 = 2pi/T

1*T = 3*2pi ... cross multiply

T = 6pi

The period is 6pi radians. This is equivalent to 1080 degrees. To convert from radians to degrees, you multiply by (180/pi).

6 0
3 years ago
Chan deposited money into his retirement account that is compounded annually at an interest rate of 7%. Chan thought the equival
dedylja [7]

Answer:

No, equivalent quarterly rate will be approx 1.75%

Step-by-step explanation:

Given that Chan deposited money into his retirement account that is compounded annually at an interest rate of 7%.

We know that there are 4 quarters in 1 year.

So to find that equivalent quarterly we will divide given yearly rate by number of quarters.

That means divide 7% by 4.

which gives 1.75%.

But that is different than Chan's though of 2% quarterly interest.

Hence Chan is wrong.

4 0
3 years ago
PLEASE HELP ME WITH THXXXXXX:)))))))))
Fantom [35]
1) (-7,2)
y=2, -x+4=11, -x=11-4=7, x=-7

2) (-3,4)
-x+2y=11
y=4, -x+8=11, -x=3, x=-3

3) (1,6)
-x+2y=11
y=6, -x+12=11,-x=-1, x=1
4 0
3 years ago
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