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UkoKoshka [18]
3 years ago
5

Kendra rides her bike to school each day. It takes her 10 minutes to ride 30 blocks. What unit rate expresses the speed of Kendr

a's bike ride? (4 points) 2 blocks per minute 3 blocks per minute 4 blocks per minute 10 blocks per minute
Mathematics
2 answers:
Mashcka [7]3 years ago
8 0
The answer would be 3 blocks per minute
Brums [2.3K]3 years ago
5 0
3 block per minute because 30/10=30
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a line passes through the point -2 and five and has a slope of 2/3 points A(x,3) and B(-2,y)lie on the line
olasank [31]
A and B lie on the line, yes, but what specifically are you supposed to do?  Looks like your problem statement was cut off before you'd finished typing it in.

You say your line passes thru (-2,5) and has a slope of 2/3?  Then, using the point-slope formula,

y-5 = (2/3)(x+2)  This is the general equation for your line.

Now let's play around with B(-2,y).  Suppose we subst. the x-coordinate of B, which is -2, into the equation   y-5 = (2/3)(x+2); we get y-5 = (2/3)(-2+2) = 0.  This tells us that y must be 5.  But we already knew that!!

So, please review the original problems with its instructions and this discussion and tell me what you need to know from this point on.



7 0
3 years ago
Heights for women are bell-shaped with a mean of 65 inches and standard deviation of 2.5 inches. If a random sample of 16 women
loris [4]

Answer:

μ= 65 inches; σ= 0.625 inch

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed(bell-shaped) random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 65, \sigma = 2.5

By the central limit theorem, the sample of 16 will have:

\mu = 65, \sigma = \frac{2.5}{\sqrt{16}} = 0.625

So the correct answer is:

μ= 65 inches; σ= 0.625 inch

8 0
3 years ago
Yolanda bought .5 pounds of grapes for $3.99. Find the unit rate
Airida [17]

Answer:

1 pounds of grapes it is 7.98$

Step-by-step explanation:

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

3 0
3 years ago
Read 2 more answers
Round 127.819 to the nearest tenth
jeka57 [31]
I'm pretty sure its 127.8
7 0
3 years ago
Read 2 more answers
A 7.5 force is applied to a football, causing an acceleration of 15 m/s2. Calculate the mass
faust18 [17]

Step-by-step explanation:

We know that we have the formula that F = ma

Given

Force (F) = 7.5 N

Acceleration (a) = 15 m/s²

Mass (m) = ?

Now

F = ma

7.5 = m * 15

m = 7.5/ 15

Mass = 0.5 kg

6 0
3 years ago
Read 2 more answers
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