2 years ago

Arrange the following fractions in the descending order: 2/5, 7/10, 3/2, 15/30

Mathematics

1 answer:

nika2105 [10]2 years ago

4 0

Answer:

3/2, 7/10, 15/30, 2/5

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7 cos x+1=6 secx solve for x

jonny [76]

7cos(x) + 1 = 6sec(x)
7cos(x) + 1 = 6/cos(x)
7cos^(x) + cos(x) = 6
7cos^(x) + cos(x) - 6 = 0
[7cos(x) - 6][cos(x) + 1] = 0
cos(x) = 6/7 , x = arccos(6/7) and
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2 years ago

Arthur bought a life insurance policy at $10.98 per month for a 20 year term. What will he pay over 20 years for the premium?

andre [41]

12(months) x 20 (years) = 240

10.98 x 240 = 2635.20

So Arthur will pay $2635.20 over 20 years for premium.

I hope this helps :)

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2 years ago

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The first three steps in determining the solution set of the system of equations algebraically are shown in the table. y = −x2 +

lianna [129]

You have a system of equations $\left \{ {{y = -x^2+2x-9} \atop {y =-6x+6}} \right.$ .

1. Substitude right side of second equation into the left side of the first equation: $-6x+6=-x^2+2x-9$ .

2. Solve this equation:
$x^2-2x+9-6x+6=0, \\ x^2-8x+15=0, \\ D=(-8)^2-4\cdot 1\cdot 15=64-60=4, \\ \sqrt{D}=2, \\ x_{1,2}=\dfrac{8\pm 2}{2 } =3,5$ .

3. Find y:
for $x_1=3, y_1=-6\cdot 3+6=-18+6=-12$ ,
for $x_2=5, y_2=-6\cdot 5+6=-30+6=-24$ .

4. The solutions of the system are: (3,-12) and (5,-24).
Answer: Correct choice is A.

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3 years ago

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A weather forecaster says the temperature will be about -5C “give or take” 10 degrees. What is the greatest possible temperature

bagirrra123 [75]

Minimum: -15C

Max: 5C

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2 years ago

What is the difference between 85.23 and 2.675

Vinil7 [7]

Answer:

82.555

Step-by-step explanation:

Based on the given conditions, formulate:

85.23 - 2.675

Calculate the sum or difference: 82.555

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2 years ago