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Firdavs [7]
3 years ago
13

WILL GIVE BRAINLIEST write an equation for the nth term of the arithmetic sequence and find the 30th term 28, 25, 22, 19, ... (s

how your work pls)
Mathematics
2 answers:
ryzh [129]3 years ago
6 0

Answer: 31 - 3n

Step-by-step explanation:

step one:

25 - 28 = -3

22 - 25 = -3

19 - 22 = -3

d = -3

Step two:

An = a1 + (n-1) d

= 28 + (n-1) -3

= 28 - 3n + 3

= 31 - 3n

a1= 28 d = 3

Maksim231197 [3]3 years ago
5 0

Answer:

-59

Step-by-step explanation:

formula= a+(n-1) d

where:

a= no. of 1st term

n= no. of term

d= common difference

so,

T(30)=28+(30-1)(-3)

T(30)=28-90+3

T(30)=(-59)

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max lost 23 pounds while on a diet. he now weighs 184 pounds. write and solve an equation to find his initial weigh w
valina [46]

184+23=w

His initial weight is 207 pounds

6 0
3 years ago
A homeowner has two smoke detector alarms installed, one in the dining room (adjacent to the kitchen) and one in an upstairs bed
cestrela7 [59]

Answer:

0.97

Step-by-step explanation:

Given that a homeowner has two smoke detector alarms installed, one in the dining room (adjacent to the kitchen) and one in an upstairs bedroom (above the kitchen). If cooking produces smoke in the kitchen, the probability of setting off the dining room alarm (D) is .95. The probability of setting off the bedroom alarm (B) is .40.

Both alarms are independent of each other.

Probability for smoke detection=P(any one alarm rings)

=P(Kitchen alarm sets off)+P(bed room alarm sets off)-P(Both sets off)

Since both are independent

P(Both) = 0.95*0.40\\=0.38

Probability for smoke detection

= 0.95+0.40-0.38

=0.97

7 0
3 years ago
Hey!!! What is −6+(−12)
SSSSS [86.1K]

Answer:

-18

Step-by-step explanation:

Essentially the same as (-6) - 12

7 0
3 years ago
Read 2 more answers
Can you help me with this it’s so confusing plz help me with both is this
mars1129 [50]

Answer:

First picture: -4,913

Second picture: 20.25

Step-by-step explanation:

-17^5/-17^2 = -17^3

-17 × -17 × -17 = -4913

4.5^5/4.5^3 = 4.5^2

4.5 × 4.5 = 20.25

Do you see how I had the same whole number on the top and bottom? (17 was on top and 17 was on bottom)

The exponents were those tiny numbers you saw.

Whenever you are dividing by the same whole number (-17/-17), you can subtract exponents.

When you multiply the same whole number, you can add the exponents.

Hope this helps! Best of luck :)

5 0
2 years ago
2b to the power of 2 = 100 i want to know if this question is true or false, someone help me pleaseee.
OLEGan [10]

Answer

5

Step-by-step explanation:

10^2= 100

so b must be 5

6 0
2 years ago
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