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Vinil7 [7]
3 years ago
13

in a triangle the 2nd angle measure twice the first and the third angle measures 4 more than the first if the sum of all angles

measures is 180 find the measure of all three angles PLEASE NEED SLEEP
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

Third angle = 120 degrees

All the angles add up to 180 degrees.

Call the smallest angle x, so the second will be 2x and as the third is three times the second it will be 6x. We have:

x+2x+6x=180

9x=180⇒x=20

The third angle is 6x=120

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If x^3=64, what is the value of x?
pickupchik [31]

Answer:

x=4

Step-by-step explanation:

all you need to do is the 3rd root of 64

which is 4.

6 0
3 years ago
How many solutions does the equation x^2-9x=-8 have?
Elza [17]
X^2-9x=-8
x^2-9x+8=-8+8
x^2-9x+8=0
(x-8)(x-1)=0

x-8=0
x-8+8=0+8
x=8

x-1=0
x-1+1=0+1
x=1

There are 2 solutions, which are 1 and 8 
8 0
3 years ago
PLSSS<br> please help me get the answer and how to show my work
Fed [463]

Answer:

Surface area of cubic box = 376 square inch

Step-by-step explanation:

Given:

Using net diagram

Length of cubic box = 10 inches

Width of cubic box = 6 inches

Height of cubic box = 8 inches

Find:

Surface area of cubic box

Computation:

Surface area of cuboid = 2[(lb) + (bh) + (hl)]

Surface area of cubic box = 2[(10)(6) + (6)(8) + (8)(10)]

Surface area of cubic box = 2[60 + 48 + 80]

Surface area of cubic box = 2[188]

Surface area of cubic box = 376 square inch

6 0
3 years ago
F(1)=-8<br> f(n)=f(n-1)-3<br> Find the explicit formula<br> Will mark Brainiest
laiz [17]

f(1) = -8, simply is a way of saying, the 1st value in the arithmetic sequence is -8.

f(n) = f(n-1) - 3, is another way of saying, following values are just, the previous minus -3.

so in short, -3 is the common difference, since that is what we're "adding" to get the new value in the sequence.

\bf n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} a_n=n^{th}\ term\\ n=\textit{term position}\\ a_1=\textit{first term}\\ d=\textit{common difference}\\[-0.5em] \hrulefill\\ d = -3\\ a_1 = -8 \end{cases} \\\\\\ a_n=-8+(n-1)(-3)\implies a_n=-8-3n+3\implies \stackrel{f(n)}{a_n}=\stackrel{\stackrel{explicit}{\downarrow }}{-3n-5}

6 0
3 years ago
6÷15(x-3) =2÷3(x+6)​
MakcuM [25]

Answer:

x = 16.5

Step-by-step explanation:

Firstly, open the brackets

6÷15x- 45 = 2÷3x+18

Rewrite the equation as:

6/15x-45 = 2/3x+18

cross multiply

6×3x+18 = 2×15x-45

18x+108 = 30x-90

collect like terms

18x-30x = -90-108

-12x = -198

divide both sides by -12

-12x/-12 = -198/-12

x = 33/2

x = 16.5

5 0
3 years ago
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