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LiRa [457]
3 years ago
12

The heights of 500 students at a local school were recorded and found to be approximated by the normal curve below. Which answer

could represent the mean and standard deviation for these data?
a.
69, 6
c.
69, 3
b.
72, 4
d.
60, 3

Please select the best answer from the choices provided
Mathematics
1 answer:
larisa [96]3 years ago
5 0

Answer:

c

Step-by-step explanation:

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Write each polynomial in standard form. identify the leading coefficient.
Amanda [17]
26. 5x^2+3x-2
The leading coefficient is 5.

28. -5c^2-3c+4
The leading coefficient is -5.

30. t^5+2t+11t-3
The leading coefficient is 1.
7 0
2 years ago
Can u help me plz now
Elenna [48]

Answer:

1 1/5 miles per hour

Step-by-step explanation:

3/5 = 0.60

1/2= 0.5 hr

0.60 * 2 = 1.2

1.2 mph = 1 1/5

3 0
3 years ago
Using your equation of f(x)= 5x + 8, evaluate f(5)
max2010maxim [7]

Answer:

33

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Factor the following expression <br> 10x^5+5x^3-14x^2-7-
Tatiana [17]

Answer:

C. (5x^3-7)(2x^2+1)

Step-by-step explanation:

Given expression is,

10x^5+5x^3-14x^2-7

=10x^5-14x^2 + 5x^3 - 7  (By the commutative property)

=2x^2(5x^3-7)+5x^3-7     (Taking 2x^3 common from first two terms )

=(5x^3-7)(2x^2+1)      (Taking 5x^3-7 common from both terms)

\implies 10x^5+5x^3-14x^2-7=(5x^3-7)(2x^2+1)

Hence, Option C is correct

5 0
3 years ago
the weight M of an object on Mars varies directly as it’s weight E on Earth. A person who weighs 95 lb on Earth weighs 38 lb on
lorasvet [3.4K]

Answer:

A 100 lb person will weight 40 lb on Mars

Step-by-step explanation:

Given:

Weight on Mars directly varies as its weight on earth.

Let weight on Mars be = M

Let weight on Earth be = E

Its known that:

M ∝ E

Thus

M=kE

where k is constant of proportionality.

when  E=95\ lb, then M=38\ lb

thus, we have

38=k(95)

dividing both sides by 95.

\frac{38}{95}=\frac{k(95)}{95}

∴ k=\frac{38}{95}

Thus when E= 100, M would be calculated as

M=\frac{38}{95}\times 100

M=\frac{3800}{95}

∴ M=40\ lb  (Answer)

∴ A 100 lb person will weight 40 lb on Mars.

8 0
3 years ago
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