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3 years ago

What is the value of x?

Mathematics

2 answers:

Andreas93 [3]3 years ago

8 0

Answer:

X=53°+45°=98°

( BEING EXTERIOR ANGLE OF A TRIANGLE IS EQUAL TO THE SUM OF INTERIOR ANGLES)

katrin [286]3 years ago

7 0

Answer:

Value of x is 118 in the morning

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The half-life of a certain radioactive material is 36 days. An initial amount of the material has a mass of 487kg. Write an expo

Lubov Fominskaja [6]

Answer:

442.302 kg

Step-by-step explanation:

amount = 487 (1/2)^(t/36) where t is the number of days.

if t = 5

amount = 487(.5)^(5/36)

= 442.302 kg

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2 years ago

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SCORPION-xisa [38]

Answer:

3 $\sqrt{141}$

Step-by-step explanation:

Use the Pythagorean Theorem.

$37^{2}$ = $x^{2}$ + $10^{2}$

1369= $x^{2}$ +100

-100 -100

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3 $\sqrt{141}$ =x

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3 years ago

If the Diameter is ten then what is the area of it

Pepsi [2]

Answer:

78.54

Step-by-step explanation:

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2 years ago

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Liono4ka [1.6K]

Given : y = -25 and x = -5

We can notice that if we Multiply 'x' with 5 we get 'y'

That is (-5) × 5 = -25

⇒ x multiplied by 5 = y

(a) The Equation that relates x and y is 5x = y

(b) We found that the Equation of this Direct variation is : 5x = y

The Question is to find the value of y when x = 3

The Value of y at x = 3 can be found by simply substituting x = 3 in the equation we found.

⇒ y = 5x

⇒ y = 5 × 3

⇒ y = 15

So, the Value of y when x = 3 is 15

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3 years ago

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Rus_ich [418]

<h2>Answer with explanation:</h2>

Let $\mu$ be the population mean strain in a way that conveys information about precision and reliability.

The sample mean is the best point estimate of the true population mean .

As per given , we have

Sample size : n= 12

degree of freedom : $df=12-1=11$

Sample mean : $\overline{x}=25.0$

The true average strain in a way that conveys information about precision and reliability= 25.0

sample standard deviation : s= 3.3

Significance level : $\alpha= 0.05$

Since sample population standard deviation is unknown , so we use t-test.

Critical t-value for t : $t_{\alpha/2, df}=t_{0.025, 11}=2.201$

95% Confidence interval for true average strain in a way that conveys information about precision and reliability:

$\overline{x}\pm t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

$25.0\pm (2.201)\dfrac{3.3}{\sqrt{12}}\\\\=\approx 25.0\pm2.10\\\\=(25.0-2.10, 25.0+2.10)=(22.9,\ 27.1)$

The 95% Confidence interval for true average strain in a way that conveys information about precision and reliability: $(22.9,\ 27.1)$

We 95% confident that the true population average strain in a way that conveys information about precision and reliability lies between 22.9 and 27.1 .

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3 years ago