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antiseptic1488 [7]
2 years ago
11

Verify that each equation is an identity. Show Work plzz!!

Mathematics
1 answer:
BlackZzzverrR [31]2 years ago
6 0

Answer:

Step-by-step explanation:

sin² x + cos² x = 1

\frac{1}{cosx} = sec x

( \frac{1}{cosx} )² = sec² x

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A daycare charges $115 per week for one child. Each additional child costs $65 for the week. If a family pays $505 for a week, h
valentinak56 [21]

Answer:

7 children

Step-by-step explanation:

$505-$115= $390

$390÷$65= 6

6+1= 7

4 0
3 years ago
According to the 1993 World Almanac, the number of calories a person walking at 3 mph burns per minute depends on the persons we
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150 pounds is your answer
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3 years ago
Is Circumference of a circle same as area?​
Klio2033 [76]

Answer:

The circumference of a circle is not the same as the area of the circle because the circumference represents the distance around the circle while the area represents the amount of space within the circle. Hope this helps.

5 0
3 years ago
Read 2 more answers
A fence is to be built to enclose a rectangular area of 1800 square feet. The fence along three sides is to be made of material
drek231 [11]

Answer:

length = 60 foot, width = 30 foot

Step-by-step explanation:

Area of rectangular part, A = 1800 ft²

Cost of fencing three sides is $ 6 per foot and cost of one side fencing is $18 per foot.

Let the length of the rectangle is l and the width of the rectangle is W.

Area = Length x width

A = L x W

1800 = L x W ...... (1)

Total cost of fencing, C = 6 x ( L + W + L) + 18 x W

C = 6 (2L + W) + 18 W

C = 12 L + 24 W

Substitute the value of W from equation (1), W=\frac{1800}{L} in equation (2)

C=12L+24\times \frac{1800}{L}

C=12L+\frac{43200}{L}

Differentiate both sides with respect to L:

\frac{dC}{dL}=12-\frac{43200}{L^{2}}

Put it equal to zero for maxima and minima

12-\frac{43200}{L^{2}}=0

L = 60 foot

and W = 30 foot

So, the costing is minimum for length = 60 foot and the width = 30 foot.

4 0
3 years ago
FInd the distance between the points (9,3) and (1,9)
BARSIC [14]

Answer:

=10

Step-by-step explanation:

1: Add the numbers

2: Factor the numbers

3: Apply radical rule

Answer: =10

<u><em>Hope this helps.</em></u>

3 0
3 years ago
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