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3 years ago

Its math homework help please

Mathematics

2 answers:

iragen [17]3 years ago

6 0

I got -66/91. Because of KCF. You would keep 6/7 and multiply by -11/13.

solniwko [45]3 years ago

6 0

Answer:

-0.725

Step-by-step explanation:

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Four interior angles of a pentagon measure 88°, 118°, 132°, and 100°. What is the measure of the fifth interior angle?

bearhunter [10]

Answer:

102 deg

Step-by-step explanation:

The sum of the interior angles of a n-gon

are equal to ( n-2)*180

for a pentagon ( 5-2)(180) = 540

88+118+132+100 + x = 540 x= 102 deg

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2 years ago

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san4es73 [151]

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3 years ago

The large sample 98% confidence interval for the proportion of hotel reservations that are canceled on the intended arrival day

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3 0

3 years ago

Read 2 more answers

1. A weight of 18,000 lb is supported on a rectangular base plate that is 9 in. wide and 2 ft long. The base plate rests on a co

slega [8]

Answer:

a) $83.3\ lb/in^2$

b) $12000\ lb/ft^2$

Step-by-step explanation:

Given : A weight of 18,000 lb is supported on a rectangular base plate that is 9 in. wide and 2 ft long. The base plate rests on a concrete slab.

To find : Determine the stress that the base plate exerts on the concrete slab. Express your answer in units of (a) lb/in². and (b) lb/ft².

Solution :

a) A rectangular base plate that is 9 in. wide and 2 ft long.

Converting ft into inches,

1 feet = 12 inch

2 feet = 2×12= 24 inch

The area of the rectangular base is $A=l\times b$

$A_1=24\times 9$

$A_1=216\ in^2$

The weight is W=18,000 lb.

The stress that the base plate exerts on the concrete slab is given by,

$S=\frac{W}{A_1}$

$S=\frac{18000\ lb}{216\ in^2}$

$S=83.3\ lb/in^2$

b) A rectangular base plate that is 9 in. wide and 2 ft long.

Converting inches into ft,

1 inch = $\frac{1}{12}\ ft$

9 feet = $\frac{9}{12}=0.75\ ft$

The area of the rectangular base is $A=l\times b$

$A_2=2\times 0.75$

$A_2=1.5\ ft^2$

The weight is W=18,000 lb.

The stress that the base plate exerts on the concrete slab is given by,

$S=\frac{W}{A_2}$

$S=\frac{18000\ lb}{1.5\ ft^2}$

$S=12000\ lb/ft^2$

5 0

3 years ago

Solve for n

Nezavi [6.7K]

Answer:

I think n is meant to be 15

8 0

3 years ago