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Stolb23 [73]
3 years ago
8

What other multiplication facts can be used to find the product of 5×6?

Mathematics
2 answers:
katrin2010 [14]3 years ago
5 0
5+5+5+5+5+5=30 is the same as 5•6. It's just easier for some to understand.
Radda [10]3 years ago
4 0
5*6 can be expressed as 5+5+5+5+5+5
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Yasmin swims at a constant rate of 2 km/h for 2.5 h. How far does Yasmin swim? 4.5 km 5 km 6 km 6.5 km
Neporo4naja [7]
She swims for 2.5 hours at a rate of 2 km/hr
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3 0
3 years ago
After a special medicine is introduced into a petri dish containing a bacterial culture, the number of bacteria remaining in the
34kurt

Answer:

The bacterial culture loses  \dfrac{5}{8}  of its size every 7 seconds.

Step-by-step explanation:

The relationship between the elapsed time t, in seconds, and the number of bacteria, N(t), in the petri dish is modeled by the function:

N(t)=4900\cdot\left(\dfrac38\right)^{t/7}

Since the growth factor is less than 1, it is a decay equation.

\dfrac38=1-\dfrac58\\N(t)=4900\cdot\left(1-\dfrac58\right)^{t/7}

Observe that the time t is divided by 7.

This is the period.

We can therefore say that the bacterial culture loses \dfrac{5}{8}  of its size every 7 seconds.

3 0
4 years ago
Find the area of the semicircle.
PSYCHO15rus [73]
So we know that the area of a full circle is pi multiplied by radius squared
But for a semicircle the area is pi multiplied by radius squared divided by two
So, we do 3.14*3^2/2
Which is 14.13
6 0
3 years ago
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Vanyuwa [196]
The radical expression is D

3 0
3 years ago
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What is 2/3 ^4 as a fraction simplified? pls, I need it fast.
Katyanochek1 [597]

Answer: 16/81

Step-by-step explanation:

2/3 × 2/3 × 2/3 × 2/3

= 16/81

3 0
3 years ago
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