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oksano4ka [1.4K]
3 years ago
12

Help me find x it’s really hard

Mathematics
1 answer:
Vilka [71]3 years ago
3 0

Answer:

x = 140

Step-by-step explanation:

180 - 65 - 75= 40

180 - 40 = x

140 = x

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Find a formula for the described function. an open rectangular box with volume 9 m3 has a square base. express the surface area
Maru [420]

Let

x--------> the length side of the square base

h--------> the height of the box

we know that

<u>the volume of the box is equal to</u>

V=x^{2} *h\\ V=9\ m^{3}

so

x^{2} *h=9\\\\h=\frac{9}{x^{2} }

<u>the surface area of the box is equal to</u>

SA=area\ of\ the\ base+perimeter\ of\ base*height (remember that the box is open)

area of the base=(x^{2})\ m^{2}

Perimeter of the base=(4*x)\ m

height=(h) m

h=\frac{9}{x^{2}}

substitute

SA=x^{2} +4*x*h\\ \\ \\ SA=x^{2} +4*x*\frac{9}{x^{2} } \\ \\ SA=x^{2} +\frac{36}{x}

we know that

the value of x can not be negative and the denominator can not be zero

therefore

<u>the answer is</u>

the domain of  SA is x> 0

the domain is the interval-------------> (0,∞)

6 0
3 years ago
The midpoint of AB is M(0, -3). If the coordinates of A are (6, -5), what are the
ELEN [110]

Answer:

(-6,-1)

Step-by-step explanation:

let b be x2,y2

then apply mid point formula

x=(x1+x2)/2

y=(y1+y2)/2

5 0
4 years ago
Can you graph this equation - Y=3×^2
Vladimir [108]
So you start at 0 then (1,3) , (2,12) and the other side would be (-1,3) , (-2,12)
8 0
3 years ago
Read 2 more answers
4(3+2x) + 2 = 46 , solve for x I need help I'm a bit confused
Reil [10]

Answer:

x=4

Step-by-step explanation:

4(3+2x)+2=46

12+8x+2=46

12+8x=44

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8 0
3 years ago
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Four teams will receive prize money based on their ticket sales. The total prize amount to be apportioned is $63. Determine the
Oxana [17]

Answer:

32.43

Step-by-step explanation:

To get the standard divisor

We sum up the tickets sold

Applejack's = 66 tickets

Broncos = 769 tickets

Colts = 652 tickets

Deers = 556 tickets

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Total tickets = 66 + 769 + 652 + 556 = 2043

Standard divisor = 2043/63

= 32.43

The standard divisor to two decimal places is 32.43

8 0
3 years ago
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