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babunello [35]
3 years ago
9

Measurement of a 18 gon of its interior and exterior

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
4 0

There will be 18 exterior angles, each of 360/18 = 20 deg. So each interior angle, which is supplementary to the exterior angle will be 180–20 - 160 deg. The sum of the 18 interior angles = 18*160 = 2880 deg.

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Olve the system of equations.
stepladder [879]
The system:
y = 3 x - 7
15 x - 5 y = 14
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Using the substitution method:
15 x - 5 · ( 3 x - 7 ) = 14
15 x - 15 x + 35 = 14
0 · x = 14 - 35
0 · x = - 21
x , y ∈ ∅
Answer:
D ) There is no solution.
3 0
2 years ago
Suppose you have a $5-off coupon at a fabric store. You buy fabric that costs 8.50 per yard. Write an equation that models the t
pshichka [43]

Answer:

$8.50*x(amount of material)-$5=y (total)

Step-by-step explanation:

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Find the value of the function when n = 7. p = 0.006n
timama [110]
P=0.042

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Step by step what is 3a+4b+5a+6
Sedaia [141]

Hello!

Answer:⇒⇒⇒⇒⇒=8a+4b+6

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

Group like terms:

↓↓↓↓↓↓↓↓↓↓↓↓↓↓

=3a+5a+4b+6

Add similar elements.

=8a+4b+6

Hope this helps!

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4 0
3 years ago
Find the accumulated value of an investment of $14,000 at 10% compounded semiannually for 11 year
kifflom [539]

Given:

Principal = $14000

Rate of interest = 10% compounded semiannually.

Time = 11 years.

To find:

The accumulated value of the given investment.

Solution:

Formula for amount or accumulated value after compound interest is:

A=P\left(1+\dfrac{r}{n}\right)^{nt}

Where, P is the principal values, r is the rate of interest in decimal, n is the number of times interest compounded in an year and t is the number of years.

Compounded semiannually means interest compounded 2 times in an years.

Putting P=14000,r=0.10,n=2,t=11 in the above formula, we get

A=14000\left(1+\dfrac{0.10}{2}\right)^{2(11)}

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A=14000\left(1.05\right)^{22}

A\approx 40953.65

Therefore, the accumulated value of the given investment is $40953.65.

8 0
3 years ago
Read 2 more answers
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