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irina [24]
3 years ago
5

Complete the proof # 3 & 4​

Mathematics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

3. A

4. D

Step-by-step explanation:

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A dolphins heart beats 688 times in 6 minutes
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In one minute, the heart beats 114 2/3 times
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4 years ago
Read 2 more answers
Memona has a 6 kg sack of rice and some empty bags.
andrew11 [14]

Step-by-step explanation:

We know that

\boxed{\sf 1kg=1000g}

\rm \mapsto \: 6kg=6000g

\rm \mapsto \: number \: of \: bags =  \frac{6000}{475}  \\  \rm \mapsto \: 12.63 \\  \rm \mapsto \: 13bags(approx)

7 0
3 years ago
The half life of a radioactive substance is 10 years. If 64 grams are placed in a
geniusboy [140]

Answer:

2 grams

Step-by-step explanation:

50 years is 5 half lives as 1 half life is 10 years.

64 divide 2 = 32-1 half life

32 divide 2 =16-2nd half life

16 divide 2 = 8-3rd half life

8 divide 2 = 4-4th half life

4 divide 2 = 2-5th half life

This means we will have 2 grams left of the radioactive substance after 50 years.

7 0
3 years ago
Show all your work multiplying the polynomials above:
Alika [10]

Answer:

3x^{5} - 11x^{4} - 4x³ + 3x² + x

Step-by-step explanation:

(x³ - 4x² + 1)(3x² + x)

Each term in the second factor is multiplied by each term in the first factor, that is

x³(3x² + x) - 4x²(3x² + x) + 1 (3x² + x) ← distribute parenthesis

= 3x^{5} + x^{4} - 12x^{4} - 4x³ + 3x² + x ← collect like terms

= 3x^{5} - 11x^{4} - 4x³ + 3x² + x

4 0
2 years ago
PLEASE HELP <br> The following table gives the heights and weights of 10 friends
ohaa [14]
Graph is attached.

Based on the graph (with height on the independent axis and weight on the dependent), there is a negative correlation between height and weight; as the height increases, the weight decreases.

If we were to graph this with weight on the independent axis and height on the dependent, there would still be a negative correlation.

5 0
3 years ago
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