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GREYUIT [131]
2 years ago
10

Please help me as soon as possible :)

Mathematics
1 answer:
max2010maxim [7]2 years ago
7 0

Answer:

the first one is -4      2. is -2       3. is -70,      4. 20                 5. 6          6. -45        7.   35    8. -20        

Step-by-step explanation:

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It’s only 10 points but it’s all i got (:
weqwewe [10]

Answer:

Thx a lot

Step-by-step explanation:

4 0
3 years ago
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
a hockey team ordered 12 wooden pedestals to mount their brass trophies on. The design pedestal is shown below. The teal is char
yKpoI14uk [10]

56 cause u need 12 divide by 0.08 12 times

8 0
3 years ago
Read 2 more answers
PLS HELP FAST I NEED IT
Gemiola [76]

Answer:

(b) 1:9

(c) 1:8

Step-by-step explanation:

(b) x*y : kx*ky, so 1:k² with k=3 is 1:9

(c) Assuming the rectangles get a z dimension, the volumes would have a ratio of xyz : xkykzk = xyz : xyzk³ = 1 : k³. With k=2 that is 1:8. But the z was never introduced so this is a bit inconclusive.

3 0
3 years ago
3
aalyn [17]

Answer:

Step-by-step explanation:

Poste uma foto do problema plss

7 0
2 years ago
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