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lions [1.4K]
3 years ago
8

Helppppppppppppppppppppp!

Mathematics
2 answers:
sammy [17]3 years ago
8 0

Answer:

x = 11

Step-by-step explanation:

if we need to find the value of x then we need to

5x + 10 = 65 ( Vertically opposite angles are same )

5x = 65 -10

5x = 55

x = 55/5

x = 11

andreev551 [17]3 years ago
8 0

Answer:

x=11

Step-by-step explanation:

5x+10=65

5x=65-10

5x=55

5x÷5=55÷5

x=11

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For y = 3x - 2x^2 +5x^3<br> show how to find the value for y, when x = 3. Show your work
Mnenie [13.5K]

y \:  =   \: f(x) \:  =  \: 3x \:  -  \: 2 {x}^{2}  \:  +  \: 5 {x}^{3}
Here, y is a cubic function of x.
When x = 3,
y \:  =  \: f(3) \:  =  \: 3(3) \:  -  \: 2 {(3)}^{2}  \:  +  \: 5 {(3)}^{3}
y \:  =  \: 9 \:  -  \: 18 \:  +  \: 135
y \:  =  \: f(3)  \:  =  \: 126
Hence, when x = 3, y = 126.
8 0
3 years ago
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Given sec theta=3 . use trigonometric identities to find the exact value of : csc (90degrees-theta)
sergey [27]
Sec θ = 3
1/cos θ = 3
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When a number is decreased by 8.3%, the result is 50. What is the original number to the nearest tenth?
lesya692 [45]

I'm pretty sure the answer would be 2.

Sorry if it's wrong

5 0
3 years ago
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Find the perimiter of this shape
juin [17]

Answer:

The perimeter of the shape is (7x²+10x+81) inches.

Step-by-step explanation:

When finding the perimeter of a shape, you have to add up all the side lengths :

p = 31 + (4 {x}^{2}  + 8x) + (3 {x}^{2}  - 5x + 20) + (7x + 30)

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p =( 7 {x}^{2}  + 10x + 81) \: inches

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=x%2By%3D-9%5C%5C%20x%2B2y%3D-25%5C%5Cwhat%20is%20value%20of%20x" id="TexFormula1" title="x+y=-
ExtremeBDS [4]

x + y = -9

x + 2y = -25

Rewrite the first equation as x = -9-y

Relace x in the second equation:

-9-y + 2y = -25

Simplify:

-9 +y = -25

Add 9 to both sides:

y = -16

Now you know y,, replace y in the first equation and solve for x:

x -16 = -9

Add 16 to both sides:

x = 7

Answer: x = 7

5 0
2 years ago
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