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NNADVOKAT [17]
3 years ago
8

Solve the equation for x and round your answer to the nearest hundredth. 5x + 14 = 26

Mathematics
1 answer:
maks197457 [2]3 years ago
7 0
5x + 14 = 26

subtract 14 on both sides

5x = 26 - 14

5x = 12

Divide 5 on both sides

x = 12/5

x = 2.4

That's only to the nearest tenth. To make it to the hundreth, just add another 0 at the end. It doesn't change the value of it.

x = 2.40 is your final answer.
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Solve 2x3 + x2 - 15x completely by factoring.
KatRina [158]
Answer:
The solutions are 0 , 5/2 and -3

Explanation:
The given expression is:
2x³ + x² - 15x
We can note that we can take x as a common factor from all terms. This will give us:
x(2x²+x-15)

Now, the expression 2x² + x - 15 is a second degree polynomial that can be factored using the quadratic formula shown in the attached image.
In the given expression:
a = 2
b = 1
c = -15
Substituting with the values of a, b and c in the formula, we would find that
2x² + x - 15 can be factored as (2x-5)(x+3)

Based on the above, the factored form of the given expression is:
x(2x-5)(x+3)

Now, to find the solutions means to find the values of x that would make the expression equal to zero.
This means that:
x(2x-5)(x+3) = 0
either x = 0
or 2x-5=0 .............> 2x = 5 ...........> x = 5/2
or x+3=0 ............> x = -3

Based on the above, the solutions of the system are:
0 , 5/2 and -3

Hope this helps :)

5 0
3 years ago
Read 2 more answers
The diagram shows a tile in the shape of a trapezium.
Ann [662]

Answer:

286cm²

Step-by-step explanation:

Let the parallel sides be 12cm and 10cm

Height h = 26cm

Area of a trapezium = 1/2(a+b) * h

Area of a trapezium = 1/2(12+10)* 26

Area of a trapezium = 1/2(22)*26

Area of a trapezium = 11 * 26

Area of a trapezium = 286cm²

Hence the area of the tiles is 286cm²

5 0
2 years ago
generally people cover 110 yards in 11 seconds. express the speed in feet per second. (3 feet = 1 yard)
ivolga24 [154]
1 yd = 3 feet....so 110 yds = 3(110) = 330 ft

330 feet / 11 seconds = (330/11) = 30 feet per second
3 0
3 years ago
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Yakvenalex [24]
Mother correct answer is -3,5
8 0
3 years ago
What is the median of this data set?
9966 [12]
The answer is C. 22 :)
6 0
3 years ago
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