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3 years ago

-12 times 1over3 help.

Mathematics

1 answer:

sergey [27]3 years ago

4 0

Answer:

-4

Step-by-step explanation:

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A boy scout has 3 meters of rope. He cuts the rope into cords on 3/5 m long. How many cords will he make?

zepelin [54]

It should be 5, i have uploaded it worked out

3 0

3 years ago

What is the area of the circle?<br> d = 8 m<br> 6471 m2<br> 50.24 m2<br> 100.48 m2

Zarrin [17]

Answer: 50.24 m2

Step-by-step explanation:

the fomlua for the area of a cuculal is

A=1/4 π d^2

so...

1/4 * π * 8^2

=50.24

7 0

3 years ago

Emily is walking around her neighborhood. After walking for 6 minutes, she traveled 4 blocks. After walking for a total of 15 mi

disa [49]

Answer:

20 Blocks

Step-by-step explanation:

6 Minutes 4 Blocks

----------------- = -------------------

30 Minutes 20 Blocks

Because 6 was multiplied by 5 to get 30 minutes in total then 4 blocks need to be multiplied by 5 as well.

7 0

4 years ago

a park is rectangular with a length of 2/3 miles in the area of the park is 3/9 square miles what is it what is the width

Helen [10]

Answer:

The width w of the rectangular park = 1/2

Step-by-step explanation:

Given

The length of the rectangular park l = 2/3 miles

The area of the park A = 3/9 square miles

To determine

The width of the rectangular park w = ?

Using the formula of the Area of the rectangle

$A\:=\:wl$

$w\:=\:\frac{A}{l}$

$=\frac{\frac{3}{9}}{\frac{2}{3}}$

$=\frac{3\cdot \:3}{9\cdot \:2}$ ∵ Fraction rule: $\frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a\cdot \:d}{b\cdot \:c}$

$=\frac{9}{18}$

$=\frac{1}{2}$

Therefore, the width w of the rectangular park = 1/2

6 0

3 years ago

Concrete blocks are produced in lots of 2000. Each block has probability 0.85 of meeting a strength specification. The blocks ar

crimeas [40]

Answer:

Step-by-step explanation:

Let us assume a normal distribution

The formula for normal distribution is

z = (x - u)/s

Where

u = mean = np

s = standard deviation = √npq

x = number of blocks that meet the specification

n = number of blocks sampled

From the information given,

p = 0.85 = probability that the block will meet the strength specification.

q = 1 - p = 1 - 0.85 = 0.15 = probability that the block will not meet the strength specification.

n = 2000

u = np = 2000 × 0.85 = 1700

s = √npq = √1700×0.15 = 15.97

We want to find the P(x lesser than 1690). It becomes

z = (1690 - 1700)/15.97

z = -10/15.9 = -0.63

Looking at the normal distribution table for the corresponding z score, it is 0.2644

Therefore

P(x lesser than 1690) = 0.2644

7 0

4 years ago