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gayaneshka [121]
1 year ago
7

2. Write five different numbers for which 328,800 is the nearest hundred.3.Write five different numbers for which 659,000 is the

nearest hundred.
Mathematics
1 answer:
stira [4]1 year ago
7 0

2. The numbers at which represent 328000 to the nearest hundred are

a. 327, 969

b. 327, 958

c. 327,999

d. 328, 040

e. 328, 030

3. The numbers that can represent 659,000 as the nearest hundred are

a. 658, 952

b. 658, 966

c. 658, 974

d. 659, 049

e. 659, 030

The nearest hundred, we consider the last two digits if they are below 50 or above 50. Then we round the number to the nearest hundreds . example 240 to the nearest hundred is 200. since 40 makes the number 240 more closer to 200 we round it to 200. if it is 260, the number 60 will be more closer to 300 than 200. so the nearest hundred in this case will be 300.

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Solve the equation cos (x/2) = cos x + 1. what are the solutions on the interval 0° ≤ x < 360°?
Sedbober [7]

Answer:

Step-by-step explanation:

cos (x/2)=cos x+1

cos (x/2)=2cos ²(x/2)

2 cos²(x/2)-cos (x/2)=0

cos (x/2)[2 cos (x/2)-1]=0

cos (x/2)=0=cos π/2,cos (3π/2)=cos (2nπ+π/2),cos(2nπ+3π/2)

x/2=2nπ+π/2,2nπ+3π/2

x=4nπ+π,4nπ+3π

n=0,1,2,...

x=π,3π

or x=180°,540°,...

180°∈[0,360]

so x=180°

or

2cos(x/2)-1=0

cos (x/2)=1/2=cos60,cos (360-60)=cos 60,cos 300=cos (360n+60),cos (360n+300)

x/2=360n+60,360n+300

x=720n+120,720n+300

n=0,1,2,...

x=120,300,840,1020,...

only 120° and 300° ∈[0,360°]

Hence x=120°,180°,300°

7 0
2 years ago
15 quarts per hour = gallons per minute
lions [1.4K]

(15 qt/hr) x (1/4 gal/qt) x (1/60 hr/min) =

            (15) / (4 x 60)  =  0.0625 gal/min
 
6 0
3 years ago
The value of y varies directly with the value of x. When y = 15, x = 3. What is the value of x when y = 60?
Viefleur [7K]
The answer is B
because at first y was equal to 15 and x equaled to 3 the quotient of 15/3 = 5.
now the y is 60 so, 60/5 = 12
6 0
3 years ago
Find the inverse of g(x) = 3x^2 - 5
Lorico [155]

Answer:

x

=

√

y

+

5

3

Explanation:

To find the inverse of a function expressed as

XXX

y

=

an expression in

x

rearrange the expression into the form:

XXX

x

=

an expression in

y

Given

XXX

y

=

3

x

2

−

5

Switch sides and add

5

to both sides

XXX

3

x

2

=

y

+

5

Divide both sides by

3

XXX

x

2

=

y

+

5

3

Take the square root of both sides

XXX

x

=

±

√

y

+

5

3

Since we were asked for an inverse function, I've eliminated the non-primary root (a function can not have two values for a single argument value).

Therefore

XXX

x

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instead of Y do G

Step-by-step explanation:

4 0
3 years ago
The hypotenuse of a right triangle is 26 millimeters. One leg of the right triangle is 10 millimeters. What is the length of the
Daniel [21]
<span>Hypotenuse = 26 mm </span>

1st Leg        = 10 mm

Other Leg = x.

By Pythagoras Theorem:

x² + 10² = 26²

<span>x² + 100 = 676 </span>

x² = 676 - 100

x² = 576

x = √576

x = 24

<span>The other leg is 24 mm</span>
3 0
3 years ago
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