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geniusboy [140]
3 years ago
12

8+y=18 как решить уравнения​

Mathematics
2 answers:
kirill [66]3 years ago
8 0

Answer:

y=10

Step-by-step explanation:

8+y=18

(-8)

y=10

!!!!!!!!!!!

docker41 [41]3 years ago
3 0

Answer:

ответ :y=10 я поставил объяснение

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the lacrosse team is hosting a dance as a fundraiser. They sold 38 more individual tickets than couples tickets and earned a tot
elena-s [515]
X=ind tickets
y=coup. tickets                   x = 38 + y ← # of ticket equation
                                           
3x + 5y =730 ← $ of equation

 3(38+y) + 5y = 730
 114 + 3y + 5y = 730
    114 + 8y =730
   -114       = -114 →    8y =616 = y= 77  →  x= 38 +y → x=38 + 77 → x =115
                                                  (115,77)
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6 0
3 years ago
Is the fraction for 7/54 a rational number or irrational number?
Advocard [28]
That’s a rational number because it’s decimal form terminates
4 0
3 years ago
True or false if a a right angle is bisected, the resulting angles will always be acute angles
Aneli [31]

Answer:

True.

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7 0
3 years ago
Haylee hikes to the top of a 120-foot vertical cliff. From the top of the cliff, the angle of depression to her campsite is 10∘.
stiv31 [10]

Answer:

681 feet

Step-by-step explanation:

Let x represent the distance between campsite and the base of the cliff.  

We have been given that Haylee hikes to the top of a 120-foot vertical cliff. From the top of the cliff, the angle of depression to her campsite is 10∘. We are asked to find the distance between campsite and the base of the cliff.  

We can see that angle of depression forms a right triangle with respect to ground, cliff and campsite.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

\text{tan}(10^{\circ})=\frac{120}{x}

x=\frac{120}{\text{tan}(10^{\circ})}

x=\frac{120}{0.176326980708}

x=680.5538183559

Upon rounding to nearest foot, we will get:

x\approx 681

Therefore, the campsite is 681 feet away from the base of the cliff.

4 0
3 years ago
This distance-time graph represents a journey made by Jo.
julsineya [31]

Answer:

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Step-by-step explanation:

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6 0
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