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gavmur [86]
3 years ago
11

Find the value of c that makes each trinomial a perfect square. x^2-13x+c

Mathematics
1 answer:
vova2212 [387]3 years ago
8 0

Answer:

169/4

Step-by-step explanation:

x² - 13x + c

x² -2(x)(13/2) +(13/2)²

(13/2)² = 169/4 or 42 ¼

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X=2.6 there is more but it really does not matter
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3 years ago
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Find the angles of the rhombus if the ratio of the angles formed by diagonals and the sides of the rhombus is 6:5.
Ainat [17]

Answer: Angles are (\frac{1080}{11}) ^{\circ} and (\frac{900}{11})^{\circ}

Step-by-step explanation:

Here, the ratio of the angles formed by diagonals and the sides of the rhombus is 6:5.

Let the  angles formed by diagonals and the sides of the rhombus are 6x and 5x.

Where x is any number.

Thus, By the property of rhombus,

Diagonals perpendicularly bisect each other.

Therefore, 6 x + 5 x + 90^{\circ} = 180^{\circ}

⇒ 11 x + 90^{\circ} = 180^{\circ}

⇒ 11 x = 90^{\circ}

⇒ x = \frac{90}{11}

Therefore, the  angles formed by diagonals and the sides of the rhombus are (\frac{540}{11} )^{\circ} and (\frac{450}{11})^{\circ}

⇒ The angles of rhombus are  (\frac{1080}{11} )^{\circ} and  (\frac{900}{11})^{\circ}


7 0
4 years ago
Multiply (2 – 71)(-1 + 47)
Serhud [2]
(2-7i)(-1+4i)
2x-1=-2
2x4i= 8i
-7ix-1=7i
-7ix4i=-28i^2

so the answer is
-2+8i+7i+28i^2
=28i^2+15i-2

:)
6 0
3 years ago
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A rental car company charges $53.75 per day to rent a car and $0.12 for every mile driven. Jaya wants to rent a car, knowing tha
Aliun [14]

Answer:

Jaya can afford to rent a car 4 days while staying within her budget.

Step-by-step explanation:

The inequality would have to indicate that the cost of renting a car has to be less than or equal to $230. The cost to rent a car is equal to the cost per day for the number of days plus the price per mile for the number of miles, which is:

53.75x+0.12y≤230, where:

x is the number of days the car is rented

y is the number of miles driven

As the statement says that she plans to drive 125 miles, you can replace "y" with this value and solve for x:

53.75x+0.12(125)≤230

53.75x+15≤230

53.75x≤230-15

53.75x≤215

x≤215/53.75

x≤4

According to this, the answer is that Jaya can afford to rent a car 4 days while staying within her budget.

5 0
3 years ago
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Alex_Xolod [135]

Answer:

the answer is origin

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