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nexus9112 [7]
3 years ago
5

Plzzzzzz help me need to pass this

Mathematics
1 answer:
gavmur [86]3 years ago
6 0
-2r+3 ≥ 19
-2r ≥ 19-3
-2r ≥ 16
2r ≤ -16
r ≤ -16/2
r ≤ -8

r ∈ (-∞; -8]

Your answer is C

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The total area of the figure to the right is 299 cm². Use this fact to write an equation involving x. Then solve the
Sliva [168]

Answer:

i. x^{2} + 26x + 144 - 299 = 0

ii. x = 5

Step-by-step explanation:

The area of the figure = 299 cm²

The figure has a shape of a rectangle, so that;

Area of rectangle = length x width

length of the figure = 18 + x

width of the figure = 8 + x

Area of the figure = (18 + x) x (8 + x)

299 = (18 + x) x (8 + x)

299 = x^{2} + 26x + 144

x^{2} + 26x + 144 - 299 = 0

x^{2} + 26x - 155 = 0

applying the trigonometric formula;

x = (-b ± \sqrt{b^{2} - 4ac}) ÷ 2a

= (-26 ± \sqrt{(26)^{2} - 4(1*-155)}) ÷ 2

= (-26 ± \sqrt{676 +620}) ÷ 2

= (-26 ± \sqrt{1296}) ÷ 2

= (-26 ± 36) ÷ 2

x = (-26 + 36) ÷ 2  OR x = (-26 -36) ÷ 2

  = 10 ÷ 2 OR -62 ÷ 2

  = 5 OR -31

Thus, x = 5

5 0
3 years ago
-11, -7 , -3 what is the next integer in the pattern​
Alenkasestr [34]

Answer: 1

Step-by-step explanation:

-11, -7, -3...

you add 4 each time so the next number would be 1

6 0
2 years ago
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The value of y varies directly with x, and y<br> Find y when x = 2.4.<br> 7.2 when x = 1.6.
Nady [450]
I believe it is corresponding to the value of x in type of situational problem.
5 0
2 years ago
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Please pe please please please please please help me
BARSIC [14]

Answer:

y =mx

Step-by-step explanation:

The second one is for the gradient

The third one is pythogras theorm

The last one is for the slope of a line(i'm not that sure about this one, sorry if its wrong)

6 0
2 years ago
If a train travels at 80 mph for 12 min, what is the distance traveled?
AnnyKZ [126]

Answer:

<h2>ANSWER→ </h2>
  • 16 miles
  • 12 minutes is 1 /5 of a hour
  • 80 ÷ 5 is 16
  • or 80x 1.466 =117.28 ft per second
  • 12 minutes x 60 seconds is 720
  • 117.28× 720= 84,441.6
  • 84441.6÷ 5280= 15.992 miles.
7 0
2 years ago
Read 2 more answers
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