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Tasya [4]
3 years ago
5

What is 3/7k = 12/35

Mathematics
2 answers:
shusha [124]3 years ago
8 0
\frac{3}{7} k= \frac{12}{35}

First. Lets divide those fraction so the problem is easier to work with.

0.42k=0.34

Now, divide both sides by 0.42 to get k by it's self.

You should get k=0.81



Zarrin [17]3 years ago
5 0
3/7 * 4 = 12/35 (Is this what your asking for?)
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Solve the inequality 4t^2 ≤ 9t-2 please show steps and interval notation. thank you!​
Misha Larkins [42]

Answer:

[0.25, 2]

Step-by-step explanation:

We have

4t² ≤ 9t-2

subtract 9t-2 from both sides to make this a quadratic

4t²-9t+2 ≤ 0

To solve this, we can solve for 4t²-9t+2=0 and do some guess and check to find which values result in the function being less than 0.

4t²-9t+2=0

We can see that -8 and -1 add up to -9, the coefficient of t, and 4 (the coefficient of t²) and 2 multiply to 8, which is also equal to -8 * -1. Therefore, we can write this as

4t²-8t-t+2=0

4t(t-2)-1(t-2)=0

(4t-1)(t-2)=0

Our zeros are thus t=2 and t = 1/4. Using these zeros, we can set up three zones: t < 1/4, 1/4<t<2, and t>2. We can take one random value from each of these zones and see if it fits the criteria of

4t²-9t+2 ≤ 0

For t<1/4, we can plug in 0. 4(0)²-9(0) + 2 = 2 >0 , so this is not correct

For 1/4<t<2, we can plug 1 in. 4(1)²-9(1) +2 = -3 <0, so this is correct

For t > 2, we can plug 5 in. 4(5)²-9(5) + 2 = 57 > 0, so this is not correct.

Therefore, for 4t^2 ≤ 9t-2 , which can also be written as 4t²-9t+2 ≤ 0, when t is between 1/4 and 2, the inequality is correct. Furthermore, as the sides are equal when t= 1/4 and t=2, this can be written as [0.25, 2]

8 0
3 years ago
What is 471 divided by 5?
torisob [31]
471/5=94.2

hope that helps!!
8 0
3 years ago
Read 2 more answers
A taxi ride costs $3.50 plus $2.50 per mile driven. If Sasha has $37 in cash , what is the greatest whole number of miles she ca
Margaret [11]
Create an equation for the total costs of driving x miles: 3.50 + 2.50x


since Sasha has $37, the equation would become: 3.50 + 2.50x = $37

subtract 3.50 from both sides: 2.50x = 33.50

divide 2.50 on both sides: x = 13.4


since the problem is asking for the greatest whole number of miles, you have to round down and the answer would be: 13 miles.
5 0
2 years ago
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Mrrafil [7]
X=50 January school is a school
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What does 72 x ? = 300
elena55 [62]

Answer: 25/6

Step-by-step explanation:

5 0
3 years ago
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