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salantis [7]
3 years ago
8

What does x equal in the following equation?

Mathematics
2 answers:
KiRa [710]3 years ago
8 0
The answer would be B
saveliy_v [14]3 years ago
6 0
B is the answer if it is x + 9=20
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A floor of a room is in the shape of square. It is to be covered with rectangular tiles that each have an area of 192 square inc
Grace [21]
Find area of room
aera=legnth wtimes width
in a square, legnth=width
aera=legnth^2
legnth=14 feet
convert o inches
14*12=168 inches
area=168^2=28224 square inches

how many tiles will cover all of floor?
aka
how many 192 in^2 is at least 28224 (at least, because we need to cover the whole floor without gaps)
192x<u>></u>28224
divide both sides by 192
x<u>></u>147

147 is the number of tiles we need

8 0
3 years ago
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Express this in standard form 5.4×10^1​
Naily [24]
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7 0
3 years ago
PLSSS HELP IF YOU TURLY KNOW THISS
neonofarm [45]
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5 0
3 years ago
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An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =
Mamont248 [21]
<h2>The car is about 6.6 years old.</h2>

Step-by-step explanation:

Given : An equation for the depreciation of a car is given by y = A(1-r)^t, where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%.

To find : Approximately how old is the car?

Solution :

The value of a car is half what it originally cost i.e. y=\frac{1}{2} A

The rate of depreciation is 10% i.e. r=10%=0.1

Substitute in the equation, y = A(1-r)^t

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Taking log both side,

\log(\frac{1}{2})=t\log (0.9)

t=\frac{\log(\frac{1}{2})}{\log (0.9)}

t=6.57

t\approx 6.6

Therefore, the car is about 6.6 years old.

3 0
3 years ago
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A television programme starts at nine thirty-five and ends at ten o’clock. How long did the programme last?
neonofarm [45]

Answer:

70 minutes which is 1 hour and 10 minutes

4 0
2 years ago
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