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mrs_skeptik [129]
3 years ago
11

I need help with 12 and 13 please.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
7 0
Just add up all the angles hope you get it right
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❗️❗️❗️❗️PLEASE HELP MEEE❗️❗️❗️❗️
koban [17]
For this case we have the following inequality:
 - \frac{1}{2}x \ \textgreater \  6
 We multiply both sides of the equation by -1.
 By doing this, change the symbol of the inequality.
 We have then:
 \frac{1}{2}x\ \textless \ -6
 From here, we clear the value of x.
 We have then:
 x \ \textless \ (2) (- 6)

 x \ \textless \ -12
 
 Answer:
 The solution set is:
 
{x | x R, x < -12} 
8 0
3 years ago
An element with mass 800 grams decays by 8.2% per day. How much of the element is remaining after 15 days,
Serjik [45]

Given:

The initial mass of an element is 800 grams.

Decay rate = 8.2% per day

Number of days = 15

To find:

The remaining element after 15 days.

Solution:

The exponential decay model is

y=a(1-r)^t

Where, a is the initial value r is the rate of interest and t is time period.

Putting a=800,r=0.082,t=15 in the above formula, we get

y=800(1-0.082)^{15}

y=800(0.918)^{15}

y=221.68188

y\approx 221.7

Therefore, the mass of the remaining element is 221.7 grams.

7 0
3 years ago
What is the relationship between A: Vertical angles <br> B: Complementary angles <br> C: Supplementary angles <br> D: None of th
NNADVOKAT [17]

Answer:

B. Complementary Angles

Step-by-step explanation:

They both make up 90 degree angle.

3 0
3 years ago
If the 50th and 51st terms of an arithmetic sequence are 140 and 142, find the 1st term
morpeh [17]

Answer:

The first term is 42.

Step-by-step explanation:

The common difference is 142  - 140 = 2 so we have

50th term = a1 + 2(50 -1) = 140    where a1 is the first term

a1 + 98 = 140

a1 = 140 - 98 =  42.

4 0
3 years ago
2. Solve - Sy + 13y<br> 45 for y.
zimovet [89]
This makes no sense
5 0
3 years ago
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