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11111nata11111 [884]
3 years ago
11

Can someone please help me, thanks!!

Mathematics
1 answer:
sergejj [24]3 years ago
5 0
Solving "three times a number increased by 4 equals -62" first might make the original problem just a little easier to handle.

three times a number increased by 4 equals -62  =>  3n + 4 = -62

Then 3n = -66, and n = -22.

Plot n=-22 on a number line.  Now choose a number n smaller than -22 and subst. it into the original inequality.  Is the result true or false?  If true, then your answer is "n<-22."  If false, then your answer is "n>-22."
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What is the area of the figure? Please help!
makvit [3.9K]
First brake the figure into 3 rectangles . One across and 2 going up and down . Then solve for the small figures and add up all the areas together . Hope this helps . 
8 0
3 years ago
The explicit rule for a sequence is an=5(−2)^n−1
Murrr4er [49]

Answer:

3) a_n=-2a_{n-1}, a_1=5

Step-by-step explanation:

Given that the explicit rule for a sequence is a_n=5(-2)^{n-1}.

Now we need to find about what is the recursive rule for the sequence and match with the given choices to find the correct choice.

1) a_n=-2a_{n+1}, a_1=5

2) a_n=-5a_{n+1}, a_1=2

3) a_n=-2a_{n-1}, a_1=5

4) a_n=-5a_{n-1}, a_1=2

Plug n=1 into given formula to get first term

a_n=5(-2)^{n-1}

a_1=5(-2)^{1-1}=5(-2)^{0}=5(1)=5

base of the exponent part is (-2) so that means we need to multiply -2 to the previous term to get nth term

Hence correct choice is: 3) a_n=-2a_{n-1}, a_1=5

7 0
3 years ago
Expand and simplify (√10-√2)² Give your answer in the formn b-c√5 where b and c are integers
vesna_86 [32]

Answer:

12-4√5

Step-by-step explanation:

(√10-√2)²

(√10-√2)(√10-√2)

Foil/distribute

10-√20-√20+2

12-2√20

12-2√4*√5

12-2*2√5

12-4√5

5 0
2 years ago
There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag. What is the theoretical probability of randomly drawing
zheka24 [161]
25 total marbles, 17 red plus green, so id say d) 68%
7 0
3 years ago
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Licemer1 [7]

Answer:

yes

Step-by-step explanation: yes yes yes ye sy ey eys eys yes

4 0
3 years ago
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