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2 years ago

6

Harry rode 2 1/2 miles on his bike yesterday. He rode 1 3/4 miles on his bike today. If he plans to ride 6 miles this week on hi

s bike, how much does he have left?

2 answers:

vaieri [72.5K]2 years ago

7 0

He has 1.75 miles left.

aksik [14]2 years ago

3 0

Answer:

1 3/4 miles

Step-by-step explanation:

2 1/2+ 1 3/4= 4 1/4

6-4 1/4= 1 3/4

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Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people a

Vanyuwa [196]

Answer:

The probability is 0.9938

Step-by-step explanation:

In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.

To calculate this, we use the z score.

Mathematically;

z = (mean - value)/(standard deviation/√N)

From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)

Let’s plug these values;

z = (125-123)/(9.6/√144) = 2.5

Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables

P(z<2.5) = 0.9938

8 0

2 years ago

Listen just answer I neeed help, but I don’t

adelina 88 [10]

Answer:

look below

Step-by-step explanation:

I'll go in order from top to bottom

$5\frac{2}{3}$

$1\frac{5}{9}$

$6\frac{1}{2}$

$6\frac{1}{3}$

$5\frac{1}{2}$

5 0

3 years ago

Find the GCF <br> 1. 20 and 60 2. 81 and 27 show you work

Liono4ka [1.6K]

Answer:1. 20

2.27

Step-by-step explanation:

1. 20* 3 = 60

2.27* 3 = 81

8 0

2 years ago

Will someone please help me!!! I don’t know the answer to these! I don’t even know if I did them right!

Varvara68 [4.7K]

Answer:

$BD = 12$ units

$AB = 16$ units

$FG=\sqrt{105}$

$EC=4\sqrt{10}$ units

$AC=8\sqrt{10}$ units

Step-by-step explanation:

A circumcenter is the point where the perpendicular bisectors of a triangle intersect.

This means

BD = DC;
BF = FA;
AE = EC.

Since BC = 24 units, then BD = 12 units (half of BC).

Since FA = 8 units, AB = 16 units (twice FA).

Consider right triangle BGF. In this triangle, BF = 8 units (congruent to FA), BG = 13 units. By the Pythagorean theorem,

$FG^2=BG^2-BF^2\\ \\FG^2=13^2-8^2\\ \\FG^2=169-64=105\\ \\FG=\sqrt{105}\ units$

Triangles BFG and AFG are congruent right triangles, then BG = AG. In right triangle AGE, $GE=3$ units, $AG=13$ units. By the Pythagorean theorem,

$AE^2=AG^2-GE^2\\ \\AE^2=13^2-3^2=169-9=160\\ \\AE=\sqrt{160}=4\sqrt{10}\ units$

$AE = EC=4\sqrt{10}\ units$

$AC = 2AE=2\cdot 4\sqrt{10}=8\sqrt{10}\ units$

5 0

2 years ago

What is an equivalent expression for 3/4 (6+2x)

Alex73 [517]

Answer:

9/2 +3/2x

Step-by-step explanation:

3/4 (6+2x)

Distribute

3/4*6 + 3/4*2x

18/4 +6/4x

9/2 +3/2x

4 0

3 years ago

Read 2 more answers