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aivan3 [116]
4 years ago
14

How many solutions for x does the following equation have?

Mathematics
1 answer:
Finger [1]4 years ago
6 0

Answer:

<em>B. No solutions.</em>

Step-by-step explanation:

Let's try solving it:

3(x + 8) = 3x + 4

3x + 8 = 3x + 4.

There are no solutions  because if we simplify we get an absurd result. Subtract 3x from both sides of the equation:

3x - 3x + 8 = 3x - 3x + 4

8 = 4.

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The swimming pool is open when the high temperature is higher than 20∘C. Lainey tried to swim on Monday and Thursday (which was
Sergeeva-Olga [200]

Answer:

30-3d\leq 20

Step by step explanation:

Let d represent the rate of temperature decrease in degrees Celsius per day from Monday to Thursday.  

As temperature decreased at a constant rate in the next 3 days, so the rate of temperature will decrease 3d degree Celsius in 3 days.  

We are told that the pool was open on Monday. The high temperature was 30^oC on Monday. So the decrease in temperature from Monday to Thursday will be 30-3d.

We have been given that the swimming pool is open when the high temperature is higher than 20^oC.

As the pool was closed on Thursday. This means that temperature on Thursday was less than or equal to 20 degree Celsius. We can represent this information in an inequality as:

30-3d\leq 20

Therefore, the inequality 30-3d\leq 20 can be used to determine the rate of temperature decrease in degrees Celsius per day, d, from Monday to Thursday.

7 0
3 years ago
Read 2 more answers
Assume that a and b are the legs of a right triangle and C is the hypotenuse.
ale4655 [162]

Answer:

b = 48

Step-by-step explanation:

a = 20

b = ?

c = 52

a^2 + b^2 = c^2

20^2 + b^2 = 52^2

400 + b^2 = 2704

b^2 = 2704 - 400

b^2 = 2304

sqrt(b^2) = sqrt(2304)

b = sqrt(2304)

b = 48

6 0
4 years ago
Simplify 5(MN + 1) - 5.<br><br> 5MN<br> 5MN - 4<br> 5MN + 4
Ilia_Sergeevich [38]
5mn is the simplified answer
4 0
3 years ago
Read 2 more answers
4-0.25g+0.5h= when g=10, h=5
neonofarm [45]
The answer to this problem is 4
4 0
3 years ago
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1/4of what equals 31?
kkurt [141]

Answer:

they and we would be 124

Step-by-step explanation:

124÷4=31

7 0
3 years ago
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