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3 years ago

Which steps are needed to solve this equation?

Mathematics

2 answers:

nekit [7.7K]3 years ago

8 0

B = 15.

15 + 6 = 21

hope this helps :)

forsale [732]3 years ago

6 0

Answer:

A- Subtract 6 from both sides of the equation. The answer is b= 15.

For this equation, you need to do the opposite of the number in the same side of the variable. So, there is a +6. To get rid of the +6, you need to be -6.

6-6=0

21-6=15

You will be left with b on one side, and then 15 on the other side.

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Greta must volunteer 225 hours for a community service project. She plans to volunteer for 6 hours

klemol [59]

Answer:

A. "an arithmetic sequence with a common difference (d) of -6."

B. 33 hours

C. $a_n=a_1+(n-1)d$

D. See below

Step-by-step explanation:

Since the sequence lessens by 6, this is an arithmetic sequence with a common difference (d) of -6.

The formula for term of arithmetic sequence is:

$a_n=a_1+d(n-1)$

Wher a_1 is the first term and d is the common difference. Since we want to find after 33 weeks, we plug in 33 into n:

$a_{33}=225 + (-6)(33-1)\\a_{33}=33$

She will have left 33 hours

We will use the arithmetic sequence term formula written above, that is:

$a_n=a_1+(n-1)d$

THis gives us the amount of hours left after a certain number of weeks.

We plug in 40 into n and find the hours left:

$a_{40}=225+(40-1)(-6)\\a_{40}=225-234\\a_{40}=-9$

THis term is NEGATIVE, which means that Greta will not have to work 40 weeks to fulfill the target of 225 hours. She needs to work less.

6 0

3 years ago

If 4y-4=16 then y= ?

algol [13]

Move the -4 to the right (+4 on both sides). now you have 4y=20. divide both sides by 4. y=5

4 0

3 years ago

Read 2 more answers

...............................

prisoha [69]

Answer:

804.2

Step-by-step explanation:

Formula
$\pi r^{2}$

plug in

$\pi *16^{2}$

≈ 804.24772

round to nearest tenth

≈ 804.2

7 0

2 years ago

Please help asap!!!!!! quadratic functions 50 points

Norma-Jean [14]

Answer:

The domain is all real numbers such that -6≤x≤-2, and the range is all real numbers greater than or equal to -4.

Step-by-step explanation:

The domain refers to the set of possible input values, so in the domain of a graph consists of all the input values shown on the x-axis, in this case, all numbers beetwen -6 and -2. The range is the set of possible output values, which are shown on the y-axis; in the graph, all numbers equal and higher than -4.

8 0

3 years ago

Pamela is 9 years younger than Jiri. The sum of their ages is 67. What is Jiri's age?

ipn [44]

Answer:

Jiri is 38 years old.

Step-by-step explanation:

First, 67 - 29 = 38 and 29 + 9 = 38.

Hope this helps!

4 0

2 years ago