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mojhsa [17]
3 years ago
7

How many millimetrs are there in 4cm?

Mathematics
1 answer:
blagie [28]3 years ago
6 0
Since 1 cm = 10 mm
Then 4 cm = 40 mm
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Hi guys . pls help me with this​
daser333 [38]

Step-by-step explanation:

The upstream speed is S / t₁, and the downstream speed is S / t₂.

If we say f is the speed of the fish in calm water, and r is the speed of the river, then:

f − r = S / t₁

f + r = S / t₂

If we say T is the time it takes to cross the river, then the speed perpendicular to the river is ℓ/T, the speed parallel to the river is r, and the overall speed is f.

Using Pythagorean theorem:

f² = (ℓ/T)² + r²

f² − r² = (ℓ/T)²

(f − r) (f + r) = (ℓ/T)²

(S / t₁) (S / t₂) = (ℓ/T)²

S² / (t₁ t₂) = (ℓ/T)²

(t₁ t₂) / S² = (T/ℓ)²

√(t₁ t₂) / S = T/ℓ

T = ℓ√(t₁ t₂) / S

6 0
3 years ago
Use the distributive property to remove the parentheses.<br> -4(-6y + 2w-4)
olga_2 [115]

Answer: 24y - 8w + 16

Step-by-step explanation:

Basically to remove the parenthesis you just distribute the -4 outside of the parenthesi and you get 24y - 8w + 16.

4 0
2 years ago
Find the slope of the line through each pair of points (19,9),(15,-3)
stepan [7]
Slope (y2-y1)/(x2-x1)
(-3-9)/(15-19) = -12/-4 = 3
The slope is 3
4 0
3 years ago
Write an expression for the sequence of operations described below.
Aleks [24]

Answer:

g/(2 x 3)

Step-by-step explanation:

Your expression will be:

-Double 3 = multiply 3 by 2

-Divide g by the result (2 × 3)

g/(2 × 3)

6 0
3 years ago
Read 2 more answers
Find the slope of the line that passes through the two points below.<br> (3,4) and (3,-1)
tangare [24]

Answer:

Slope = (-5,0)

Step-by-step explanation:

When given two points and asked to find the slope, you can find the answer using slope formula which is:

slope = (y2 - y1) / (x2-x1)

You have been given the points (3,4) and (3,-1). You can select which ones to be x1 and y1 and which ones to be x2 and y2. It doesn't matter which, so let's just do (3,4) are x1 and y1 and (3,-1) are x2 and y2. Now we can plug it into the formula.

Slope = (-1 - 4) / (3-3)

= -5 / 0

= -5,0

So the answer is (-5,0).

8 0
2 years ago
Read 2 more answers
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