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dlinn
10 days ago
10

Keisha estimates 259+372 by rounding each number to the nearest 10. What is Keisha's estimate of the sum?

Mathematics
1 answer:
Leona [12.6K]10 days ago
8 0
630 Steps: 259 rounded to the nearest ten results in 260 372 rounded to the nearest ten results in 370 Adding gives 260+370=630 Hope this is of help!
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A space probe is controlled by 7 different instructions from the ground. the probabilities of sending these instructions vary -
Zina [12379]
The space probe must be able to recognize 7 distinct command types.
The number of combinations that can be encoded using n bits is 2^n. Thus, the minimum number of bits required to encode at least 7 different commands would be:

2^n > 7
2^n > 2^2.80
n > 2.80
n=3

A minimum of 3 bits is required
4 0
1 month ago
Read 2 more answers
An i plz get some help
PIT_PIT [12445]

Answer:

I’d say it’s moderate in my opinion

Step-by-step explanation:

I might not be correct, so it’s best to wait for another person's input if my answer isn’t what you seek

5 0
10 days ago
Ray CE is the angle bisector of ACD. Which statement about the figure must be true? mECD = mECB mACE = mACD ACE DCB
Leona [12618]

Answer:

ACE = ECD is the solution

Step-by-step explanation:

5 0
1 month ago
What is the concentration of a new solution obtained by mixing 25ml of water with 125ml of a 20% salt solution in water?
babunello [11817]
Given that the salt concentration in a 125 ml salt solution is at 20%, it indicates a salt to water ratio of 20:80, which simplifies to 1:4.

Consequently, the salt quantity in the 125 ml 20% solution can be calculated as 20% of 125, yielding 0.2 x 125 = 25 ml, and therefore, the water content amounts to 125 - 25 = 100 ml.

When adding 25 ml of water to this 20% salt solution, the total water becomes 100 + 25 = 125 ml while the salt quantity remains at 25 ml.

Thus, the new total volume of the solution is 125 + 25 = 150 ml, leading to a salt proportion in the updated mixture of 25/150 = 0.1667.

As a result, the concentration of the new solution <span>after mixing 25 ml of water with 125 ml of a 20% salt solution is 16.67%</span>
5 0
1 month ago
Use the alternative curvature formula K=|a x v|/|v|^3 to find the curvature of the following parameterized curves.
PIT_PIT [12445]

Answer:

K=\frac{2}{(4t^{2}+1)^{\frac{3}{2}}}

Step-by-step explanation:

First, we determine v and a as:

v(t)=\frac{dr(t)}{dt}=(2t,1,0)

a(t)=\frac{dv(t)}{dt}=(2,0,0)

Subsequently, we compute the cross product and substitute it into the formula for k

a(t) X v(t) = (0,0,2)

| a(t) X v(t) | = 2

| v |^{3} = (4t^{2}+1)^{\frac{3}{2}}

Thus, we conclude

K=\frac{2}{(4t^{2}+1)^{\frac{3}{2}}}

I trust this is of assistance to you

best regards

8 0
10 days ago
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