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2 years ago

6

A test contains two multiple-choice questions. If a student makes a random guess to answer each question. (Hint: Consider two ou

tcomes for each question—either the answer is correct or it is wrong.) 2.2.1 How many outcomes are possible?

1 answer:

Maslowich2 years ago

5 0

Answer: 2

Step-by-step explanation: he could ethier get t right or get it wrong

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Please help with question 2, I’m too tired to think right now, and it’s for my little sister and it’s due tomorrow! Ignore the n

marishachu [46]

Answer:

2000 L

Step-by-step explanation:

There are 1250 L of water in a tank at present. If the tank is 0.625 full, what is the capacity of the tank?

The simple solution is:

1250 L ÷ 0.625 = 2000 L

The algebraic solution is:

Let <em>c</em> equal the capacity of the tank.

Therefore, <em>c</em> × 0.625 = 1250.

Divide both sides by 0.625:

<em>c</em> × 0.625 ÷ 0.625 = 1250 ÷ 0.625

And simplify:

<em>c</em> = 1250 ÷ 0.625

<em>c</em> = 2000

5 0

2 years ago

Using the Law of Cosines, in triangle DEF, if e=18yd, d=10yd, f=22yd, find measurement of angle D

Ivahew [28]

Check the picture below.

$\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}=cos(C)\implies cos^{-1}\left(\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}\right)=\measuredangle C\\\\
-------------------------------\\\\
\begin{cases}
d=10\\
e=18\\
f=22
\end{cases}\implies cos^{-1}\left(\cfrac{{{ 18}}^2+{{ 22}}^2-10^2}{2(18)(22)}\right)=\measuredangle D$

$\bf \implies cos^{-1}\left(0.893\overline{93}\right)=\measuredangle D\implies 26.63^o\approx \measuredangle D$

7 0

3 years ago

The temperature is -5°C at sunrise. By noon, the temperature changes by 6°C what could be the temperature at noon? answer asap !

Citrus2011 [14]

Answer:

the temperature is -5C which is negative so its behind the zero on a number line and 6C is positive which is infront of the zero so it would be 1C by noon

Step-by-step explanation:

3 0

2 years ago

Here is a system of linear equations: y= x+4 y= -3x-8

ipn [44]

Answer:

A) (-3,1)

Step-by-step explanation:

<u>Given system of linear equations: </u>

y= x+4
y= -3x-8

---

x + 4 = -3x - 8
x + 3x = - 8 - 4
4x = -12
x = -3

Then

y =-3 + 4 = 1

Solution is (-3, 1)

Correct option is A

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3 years ago

Hiiiijengniuenfhvnaefnhvadf

Aloiza [94]

Answer:

hiiiiieykfddhmlsaafjmxa

3 0

2 years ago

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