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3 years ago

Please help, its so simple

Mathematics

2 answers:

wariber [46]3 years ago

8 0

Answer:

117 degrees

Step-by-step explanation:

Here, we need to use the fact that there is 180 degrees in each triangle. Let's first find the angle that is supplementary to the angle labelled 101 degrees.

Because these two angles are supplementary, they add up to 180, so we can find that interior angle by subtracting 101 from 180: 180 - 101 = 79 degrees.

Now, we know two angles in the triangle: 38 degrees and the one we just found, 79 degrees. To find the third angle, we just subtract 38 and 79 from 180 (because all angles in a triangle add up to 180): 180 - 38 - 79 = 63 degrees.

Notice that this angle that is 63 degrees is actually the supplementary angle if x, so simply subtract 63 from 180 to get x: 180 - 63 = 117 degrees.

Hope this helps!

antoniya [11.8K]3 years ago

5 0

Answer:

117

Step-by-step explanation:

Subtract from 180 to get interior and exterior angles.

180 - 101 = 79

79 + 38 = 117

180 - 117 = 63

180 - 63 = 117

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3 years ago

1. 11 1/6 =? 2. 2 9/10 =? 3. - 4/12 =? Please help me

Jobisdone [24]

Answer:

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3 years ago

A regular-size box of cereal measures 3 1/2 inches by 8 1/2 inches by 15 inches. The manufacturer also sells an individual-size

Phoenix [80]

The individual-size box of cereal is a rectangular prism with a volume of 44.625 inches³.

<h3>What is the volume of a rectangular prism?</h3>

The volume of rectangular prism of length l, width w and height h is given by:

V = lwh.

In this problem, the standard dimensions are:

l = 3(1/2) = 3 + 0.5 = 3.5 inches.

w = 8(1/2) = 8 + 0.5 = 8.5 inches.

h = 15 inches.

The individual-size box has a 1/10 of the volume of the original box, hence:

V = 0.1 x 3.5 x 8.5 x 15 = 44.625 inches³.

More can be learned about the volume of a rectangular prism at brainly.com/question/17223528

#SPJ1

4 0

2 years ago

Plz help!!!!!!!!!!!!!!!

julsineya [31]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~

Generally what I like to do, to solve questions like this is to substitute the given answers into the equation to solve this faster...

Equation: x^2 + 10x + 12 = 36

A.) (-12)^2 + 10(-12) + 12 = 36

144 - 120 + 12 = 36

24 + 12 = 36

36 = 36

(2)^2 + 10(2) + 12 = 36

4 + 20 + 12 = 36

24 + 12 = 36

36 = 36

Since we found the answer with the first try, we already know the correct answer is A.

So...

The Correct answer is: A.) x=-12 or x=2

4 0

3 years ago

Read 2 more answers

Situation:A researcher in North America discoversa fossile that contains 65% of its originalamount of C-14..-ktN=NoeNo inital am

zheka24 [161]

SOLUTION

We have been given the equation of the decay as

$\begin{gathered} N=N_0e^{-kt} \\ where\text{ } \\ N_0=initial\text{ amount of C-14 at time t} \\ N=amount\text{ of C-14 at time t = 65\% of N}_0=0.65N_0 \\ k=0.0001 \\ t=time\text{ in years = ?} \end{gathered}$

So we are looking for the time

Plugging the values into the equation, we have

$\begin{gathered} N=N_0e^{-kt} \\ 0.65N_0=N_0e^{-0.0001t} \\ e^{-0.0001t}=\frac{0.65N_0}{N_0} \\ e^{-0.0001t}=0.65 \end{gathered}$

Taking Ln of both sides, we have

$\begin{gathered} ln(e^{-0.000t})=ln(0.65) \\ -0.0001t=ln(0.65) \\ t=\frac{ln(0.65)}{-0.0001} \\ t=4307.82916 \end{gathered}$

Hence the answer is 4308 to the nearest year

8 0

6 months ago