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3 years ago

El resultado de la operación combinada 70-25+9-2x10÷2 corresponde a: A) 9 B)44 C)80

Mathematics

1 answer:

AlexFokin [52]3 years ago

3 0

Answer:

B) 44

Step-by-step explanation:

70 - 25 + 9 - 2 × 10 ÷ 2

70 - 25 + 9 - 20 ÷ 2

70 - 25 + 9 - 10

45 + 9 - 10

54 - 10

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Assume that thermometer readings are normally distributed with a mean of 0 degrees C and a standard deviation of 1.00 degrees C.

Cerrena [4.2K]

Answer:

The probability of getting a reading between -1.42 degree C and 1.61 degree C is 0.8685.

Step-by-step explanation:

We are given that

$Mean,\mu=0$ degree C

Standard deviation, $\sigma=1$ degree C

We have to find the probability of the reading between -1.42 and 1.61.

$P(-1.42$

Using the formula

$P(a$

$P(-1.42$

Hence, the probability of getting a reading between -1.42 degree C and 1.61 degree C is 0.8685.

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3 years ago

Solve the exponential equation: 4x – 2 = 2x

qaws [65]

Answer:

(c)

Step-by-step explanation:

4 x 2 equals 8 8 -2 equals 6 6 4 24

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3 years ago

Is Abc A right triangle? (HELP)

ollegr [7]

<h2>Hello There today we will solve your problem</h2>

<em>Response-</em>

<em>ABC is absolutely a right triangle</em>

<em>we can use the pythagorean theorem to solve this</em>

<h3><em>Definitions</em></h3>

Right Triangle - <em>A right triangle or right-angled triangle, or more formally an orthogonal triangle, is a triangle in which one angle is a right angle. The relation between the sides and other angles of the right triangle is the basis for trigonometry. The side opposite to the right angle is called the hypotenuse.</em>

Pythagorean Theorem - <em>In mathematics, the Pythagorean theorem, or Pythagoras' theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.</em>

<em>To use to the Pythagorean Theorem it is</em>

$A^2+B^2=C^2$

For our equation $A$ would be $12$ $B$ would be $5$

<h2><em>Solve</em></h2>

$12^2+5^2\\144+25\\169\\C^2=169\\C=13$

Since we got $C=13$ this is a right triangle since it's what we had before.

3 0

3 years ago

Read 2 more answers

One serving of a fruit punch recipe serves 16 people. ( number of servings, number of people served .) which of the following li

Inessa05 [86]

It would be list f. Each serving(1)serves16 so 2 servings serve 32 and so on.

8 0

3 years ago

Ex 2.8<br> 3. find the maximum value of y for the curve y=x^5 -3 for -2≤x≤1

harkovskaia [24]

$y=x^5-3\\ y'=5x^4\\\\ 5x^4=0\\ x=0\\ 0\in [-2,1]\\\\ y''=20x^3\\\\
y''(0)=20\cdot0^3=0$

The value of the second derivative for $x=0$ is neither positive nor negative, so you can't tell whether this point is a minimum or a maximum. You need to check the values of the first derivative around the point.
But the value of $5x^4$ is always positive for $x\in\mathbb{R}\setminus \{0\}$ . That means at $x=0$ there's neither minimum nor maximum.
The maximum must be then at either of the endpoints of the interval $[-2,1]$ .
The function $y$ is increasing in its entire domain, so the maximum value is at the right endpoint of the interval.

$y_{max}=y(1)=1^5-3=-2$

4 0

3 years ago