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vova2212 [387]
3 years ago
6

1. 90c : $4.50 2. 80cm : 1.2m

Mathematics
2 answers:
zepelin [54]3 years ago
7 0
Hey the answer for that question is 2:3
horrorfan [7]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

Before simplifying the ratios we require them to have the same units.

(1)

$4.50 = 450c, thus

90c : $4.50

= 90 : 450 ← divide both parts by 10

= 9 : 45 ← divide both parts by 9

= 1 : 5

(2)

1.2 m = 1.2 × 100 = 120 cm, thus

80 cm : 1.2 m

= 80 : 120 ← divide both parts by 10

= 8 : 12 ← divide both parts by 4

= 2 : 3

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Blake collects coins. he collected a total of 150 coins. if 84% of the coins he collected were foreign,
Alekssandra [29.7K]

Answer:

Step-by-step explanation:

84% of 150=126 (foreign coins)

150-126=24 (non foreign coins)

8 0
2 years ago
There are three cardinals, five sparrows and four finches near a bird feeder. If a sharp shunned hawk randomly selects one song
Hoochie [10]

Answer:

1/4

Step-by-step explanation:

The probability of it being a cardinal is the number of cardinals / the total number of possible birds the hawk could eat.

There are 3 + 5 + 4 = 12 total birds near the bird feeder.

There are 3 cardinals.

So the probability is 3/12 = 1/4 that the cardinal is eaten!

8 0
3 years ago
Anya recorded the height in inches of 10 students in her class. The results are shown below.
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D, add all your answers than divide by how many numbers there are
8 0
3 years ago
Read 2 more answers
Gravel is being dumped from a conveyor belt at a rate of 30 ft3/min, and its coarseness is such that it forms a pile in the shap
pogonyaev

Answer:

Rate of increase in height =\frac{dh}{dt}=0.3156ft/min

Step-by-step explanation:

we know that volume of a cone is given by

V=\frac{1}{12}\pi d^{2}h

It is Given that diameter equals height thus we have

V=\frac{1}{12}\pi h^{2}h\\\\V=\frac{1}{12}\pi h^{3}

Differentiating both sides with respect to time we get

\frac{dV}{dt}=\frac{1}{12}\pi \frac{dh^{3}}{dt}\\\\\frac{dV}{dt}=\frac{1}{12}\pi(3h^{2}\frac{dh}{dt})

Applying values and solving for \frac{dh}{dt} we get

\frac{dh}{dt}=\frac{12\frac{dV}{dt}}{3\pi h^{2}}\\\\\frac{dh}{dt}=0.3156ft/min

8 0
3 years ago
2/3 divided by 5 is it 2/3 times 1/5=2/15
drek231 [11]

(2/3)/5

Yes. (2/3)/5 is the same as 2/15 because:

(2/3) = (0.67)/5 = 0.133 (continuing)

(2/15) = 0.133 (countinuing)

hope this helps

4 0
3 years ago
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