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3 years ago

Last question, if its wrong expect a pc flying through your window

Mathematics

1 answer:

slavikrds [6]3 years ago

6 0

Answer:

D. 73°

Step-by-step explanation:

The inside angles of a triangle always equal 180° so if we know that a right angle is already 90° we only need one more angle to know all of them:

1. 90° + 17° + ?° = 180

2. 90° + 17° = 107°

3. 180° - 107° = 73°

4. 90° + 17° + 73° = 180

5. XD

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How do you solve it?

Elis [28]

At heart we're being asked for a line through two points,

$(40^\circ \textrm{ C}, 355 \textrm { m/s}) \quad \textrm{and} \quad (49^\circ \textrm{ C}, 360 \textrm { m/s})$

In general the line through (a,b) and (c,d) is

$(y-b)(c-a)=(x-a)(d-b)$

Check that you understand why both (a,b) and (c,d) are on this line.

Here our indepedent variable, instead of x, is T, temperature. Our dependent variable is v, velocity. Substituting,

$(v - 355)(49 - 40) = (T - 40)(360 - 355)$

$9(v - 355) = 5(T - 40)$

$v-355 = \frac 5 9 T - \frac{200}{9}$

$v= \frac 5 9 T - \frac{200}{9} + 355$

$v= \frac 5 9 T + \frac{2995}{9}$

That's our answer; let's check it.

When T=40, v = (5/9)40 + (2995/9) = 355 good

When T=49, v= (5/9)49 + (2995/9) = 360 good

7 0

3 years ago

Rolling an even<br> number and the<br> coin landing on<br> heads

iren [92.7K]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

Rolling a even: $\frac{3}{6} -> \frac{1}{2}$

Coin on heads: $\frac{1}{2}$

$\frac{1}{2}$ × $\frac{1}{2} =\frac{1}{4}$

5 0

2 years ago

Read 2 more answers

If you need to use 4/5 of a cup of strawberries for a single pie . How many cups would be needed for 2 pies.

kirza4 [7]

Answer:

1 3/5 or 8/5 cups for 2 pies

Step-by-step explanation:

5 0

3 years ago

Ok, I would really like some help ^.^ If you could and have the time...would you mind breaking down the answer for me please, he

uysha [10]

Answer:

Step-by-step explanation:

4 x 4=16 and half of 4 is 2 so the answer is C)4

5 0

3 years ago

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Using trig how do you answer this

Aneli [31]

Answer:

62.73° or 1.09 radians

Step-by-step explanation:

SOH CAH TOA

sin = $\frac{opposite}{hypotenuse}$ , so sin (?) = $\frac{8}{9}$

this means that ? = $sin^{-1}(\frac{8}{9})$ or ? = arcsin( $\frac{8}{9}$ ), depending on what calculator you have

plugging in $sin^{-1}(\frac{8}{9})$ or arcsin( $\frac{8}{9}$ ) into calculator will get you

62.73° or 1.09 radians

use the corresponding answer depending on if the question asks for degrees or radians

3 0

3 years ago

Read 2 more answers