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olga nikolaevna [1]
3 years ago
13

-3/2t=-9 please help. its for a test

Mathematics
2 answers:
11111nata11111 [884]3 years ago
3 0

-\frac{3}{2}t=-9\\\\t=-9:(-\frac{3}{2})\\\\t=-9\cdot(-\frac{2}{3})\\\\t=\frac{18}{3}\rightarrow\boxed{t=6}

Ket [755]3 years ago
3 0

Answer:

The answer is t = 6

Step-by-step explanation:

I. -3/2t = 9

t = \frac{-9}{\frac{-3}{2} }

t = -9 * -2/3

t = 6

Hope that help :D

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il a positive number decreased by 5, then it is 84 times of its reciprocal. Find the number? op 10, 11, 12, 13​
Alenkasestr [34]

Answer:

x = 12

Step-by-step explanation:

x - 5 = 84/x

x² - 5x = 84

x² - 5x - 84 = 0

x = (5 ±√(5² - 4(1)(-84))) / 2

x = (5 ± 19) / 2

x = -7 ignore

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6 0
3 years ago
the coordinates of the vertex of a parabola in the xy-plane are (-4,k). If the y-intercept of the parabola is 12 and the parabol
svp [43]

The value of k is (A) 20/3.

<h3>What is a parabola?</h3>
  • A parabola is a planar curve that is mirror-symmetrical and roughly U-shaped in mathematics.
  • It fits various seemingly disparate mathematical descriptions, all of which can be shown to define the same curves.
  • A point and a line are two ways to describe a parabola.

To find the value of k:

  • y - b = c (x - a)²

Where (a, b) is the vertex and c is the constant.

  • (a, b) = (-4, k)
  • y - k = c (x - (- 4))²
  • y - k = c (x + 4)²

So,

  • x = 0, y = 12
  • 12 - k = 16c
  • k = 12 - 16c  ...... (1)

Then,

  • (-3, 7) = (x, y)
  • 7 - k = c (1)²
  • k = 7 - c  ...... (2)

Now,

  • 12 - 16c = 7 - c
  • 12 - 7 = 16c - c
  • 5 = 15c
  • c = 5/15 = 1/3

So, the value of k:

  • k = 12 - 16 (1/3) = 12 - 16/3 = 36-16/3 = 20/3

Therefore, the value of k is (A) 20/3.

Know more about a parabola here:

brainly.com/question/4061870

#SPJ4

The complete question is given below:

The coordinates of the vertex of a parabola in the XY plane are (-4,k). If the y-intercept of the parabola is 12 and the parabola passes through the point (-3,7), then what is the value of k?

(A) 20/3

(B) 16/5

(C) 14/3

(D) 12/5

5 0
1 year ago
PLZ HELP DUE IN 3 MINUTES!!!!
stepan [7]

Answer:

a1) 65

a2) 25

a3) 45

Step-by-step explanation:

all triangle equal to 180

7 0
2 years ago
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HELP PLEASE!!!! FASTT
Veronika [31]

Answer:

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Range (-2,0,1,2,3)

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Step-by-step explanation:

Domain (-3,-2,-1,0,1,2)

Range (-2,0,1,2,3)

one x-value with two y-values, (-1, 2) and (-1, -2)

not a function

Plotting the graph should be easy

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4 0
2 years ago
5 1/10 divided by 1 1/5
hoa [83]
4.25 is the correct answer
5 0
3 years ago
Read 2 more answers
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