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marysya [2.9K]
3 years ago
6

I need help please!!!​

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
7 0
Answer: you’re multiplying by 2 each time
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Tim answers 7 out 8 questions correctly.At this rate, how many questions will he answer correctly out of 96.
nika2105 [10]

\bf \begin{array}{ccll} \stackrel{correct}{answers}&questions\\ \cline{1-2} 7&8\\ x&96 \end{array}\implies \cfrac{7}{x}=\cfrac{8}{96}\implies \cfrac{7}{x}=\cfrac{1}{12} \implies 84=x

5 0
3 years ago
Plz help mee with thisss
timurjin [86]

Answer:

495

Step-by-step explanation:

60x10=600

600-105=495

3 0
3 years ago
Help please, just number 3, thats all im asking, thanks.
Bezzdna [24]

The rectangle that has area 400 has width 10, so its length is 40.

A = LW; L = A/W = 400/10 = 40

The length is 10 + 0.2 = 10.2. The width is 10 + 2 = 12

The multiplication is 10.2 * 12

40.2 * 12 = 40 * 10 + 0.2 * 10 + 40 * 2 + 0.2 * 2

40.2 * 12 = 400 + 2 + 80 + 0.4

40.2 * 12 = 482.4

4 0
3 years ago
See attached image. For part b, my answer is <img src="https://tex.z-dn.net/?f=h%28t%29%3D%5Cfrac%7Bt%5E2%7D%7B100%7D-%5Cfrac%7B
ArbitrLikvidat [17]

Answer:

a) shown

b) h = [sqrt(17) - (5/2)t]²

c) t = 2sqrt(17)/5 seconds

Step-by-step explanation:

V = pi × r² × h

V = pi × 5² × h

V = 25pi × h

a) dV/dt = dV/dh × dh/dt

-5pi × sqrt(h) = 25pi × dh/dt

dh/dt = -sqrt(h)/5

b) 1/sqrt(h) .dh = -5. dt

2sqrt(h) = -5t + c

t = 0, h = 17

2sqrt(17) = 0 + c

c = 2sqrt(17)

2sqrt(h) = -5t + 2sqrt(17)

sqrt(h) = [2sqrt(17) - 5t] ÷ 2

sqrt(h) = sqrt(17) - (5/2)t

Square both sides

h = [sqrt(17) - (5/2)t]²

c) empty: h = 0

0 = [sqrt(17) - (5/2)t]²

sqrt(17) - (5/2)t = 0

(5/2)t = sqrt(17)

t = 2sqrt(17)/5

t = 1.64924225 seconds

sqrt: square root

5 0
3 years ago
Write 10 1/4 as a decimal number
EastWind [94]

Answer:

10.25

Step-by-step explanation:

1/4- is 0.25

SO

we don't have to change 10 because it is a whole number.

The answer is 10.25

4 0
3 years ago
Read 2 more answers
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