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Mekhanik [1.2K]
2 years ago
8

Miss Watson runs a distance of 200 metres in 25 seconds.

Mathematics
2 answers:
NNADVOKAT [17]2 years ago
7 0

Answer:

average=total distance/time

average = 200/25 =8 m/s

Step-by-step explanation:

Leto [7]2 years ago
4 0

Answer:

8mps

Explantion:

200 / 25 = 8

8 miles per second.

8mps * 25 seconds = 200 miles

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The following time series shows the sales of a clothing store over a 10-week period. Compute the mean square error (MSE) for a 4
Alenkasestr [34]

Answer:

7.67

Step-by-step explanation:

Given the data :

Week_sales_Forecast ___|error|_ |error|²

1 _____15

2 ____ 16

3 ____ 19

4 ____ 18

5 ____ 19 ____ 17 _______ 2____4

6 ____ 20 ___ 18 ________2____4

7 ____ 19 ____19 ________0____0

8 ___ 22 ____ 19 ________3____9

9 ___ 15 ____ 20 ________5___ 25

10 __ 21 _____19 ________ 2 ___ 4

Mean squared error :

(4 + 4 + 0 + 9 + 25 + 4) / 6

= 46 / 6

= 7.666

= 7.67

8 0
2 years ago
Read 2 more answers
Which algebraic expression is a polynomial with a degree of 3?
Irina18 [472]

Option a: 4x^{3} -\frac{2}{x}

Option b: 2y^{3} +5y^{2} -5y

Option c: 3y^{3} -\sqrt{4y}

Explanation:

The highest degree of a polynomial is the largest exponent of that variable.

Now, we shall determine the polynomial with degree 3.

Option a: 4x^{3} -\frac{2}{x}

From the expression 4x^{3} -\frac{2}{x}, the highest degree of the polynomial is 3.

Hence, 4x^{3} -\frac{2}{x} is a polynomial with a degree of 3.

Hence, Option a is the correct answer.

Option b: 2y^{3} +5y^{2} -5y

From the expression 2y^{3} +5y^{2} -5y, the highest degree of the polynomial is 3.

Hence, 2y^{3} +5y^{2} -5y is a polynomial with a degree of 3.

Hence, Option b is the correct answer.

Option c: 3y^{3} -\sqrt{4y}

From the expression 3y^{3} -\sqrt{4y}, the highest degree of the polynomial is 3.

Hence, 3y^{3} -\sqrt{4y} is a polynomial with a degree of 3.

Hence, Option c is the correct answer.

Option d: -xy\sqrt{6}

From the expression -xy\sqrt{6}, the highest degree of the polynomial is 1.

Hence, -xy\sqrt{6} is a polynomial with degree 1.

Hence, Option d is not the correct answer.

5 0
3 years ago
Read 2 more answers
1) If the designer measures the pond and determines that the length of the pond across is 400
ozzi

Answer: 200

Step-by-step explanation: to get the radius you divided by 2. bc there is only 2 sides , have a great day.

3 0
3 years ago
Opinions please! Get Points! Im doing a research paper in school for English (and part math) and my topic is "Is NASA a Waste of
Irina-Kira [14]

The thing with nasa is that when they use money to build and land things such as space rovers or space shuttles, the money that is used is put back into the economy instead of just floating in space. So the idea that its a waste could easily be debunked by the fact that the money that is used is still in the economy, whether or not you believe the exploration of space is needed could also be a solid point for your paper. Hope that I could help, Good luck with your paper

7 0
2 years ago
if apples cost$0.59 per pound how would you express the total cost of apples given that you purchase 5 pounds.​
tia_tia [17]

Answer:

$2.95

Step-by-step explanation:

0.59*5

2.95

5 0
3 years ago
Read 2 more answers
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