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Effectus [21]
3 years ago
15

(20a - 1) ÷ b when a= 2 and b= 13​

Mathematics
2 answers:
Kitty [74]3 years ago
8 0

answer: 32a^{13}b

your welcome

mote1985 [20]3 years ago
3 0

Answer:

3

Step-by-step explanation:

(20a - 1) ÷ b

a = 2

b = 13

(20(2) - 1) ÷ 13

(40-1)÷13

39÷ 13

= 3

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leonid [27]

Answer:

Torrance spends 16$ on his brother

Step-by-step explanation:

You have 100$

So, we have

x (brother) + x (sister) + x (mother) = 100

But, since 10$ less will be spent on the sister than the brother, it becomes (x - 10) and twice + 6$ is spent on the mom, it also becomes (2x + 6)

Our equation then becomes

(x - 10) + x + (2x + 6) = 100

X will end up equaling 26. This is how much is spent on the sister.

(x - 10) will be substituted for (26 - 10), which equals 16.

I'm not sure if this is right so you might want to check with somebody (since I may be wrong) I hope this helps you understand how to basically do it though. <3

7 0
2 years ago
Janet can make 45 of a necklace in 20 minutes. At this rate, how many necklaces, to the nearest tenth of a necklace, can Janet m
Ray Of Light [21]

Answer:

15

Step-by-step explanation:

8 0
2 years ago
PLEASE HELP! I will mark brainliest!
Nitella [24]

Answer:

D

Step-by-step explanation:

Instead of going through each of the table, let's create one ourselves.

So, we have the piecewise function:

f(x)=-x+8,\text{ if } x

So, let's create a table of values starting with 2 and skipping the odd numbers until 12.

2:

For 2, since 2 is less than one, plug it into the first equation. Thus:

f(2)=-(2)+8=6

So, the first value is (2,6).

For 4, since 4 is <em>not</em> less than 4 but rather equal to 4, use the second equation. Thus:

f(4)=(4)=4

The second value is (4,4).

For 6, the same thing. 6 is greater than 4 so use the second equation:

f(6)=(6)=6

So the third value is (6,6).

And this pattern will repeat. Therefore, our table of equations is:

x   |      y

2  |      6

4  |      4

6  |      6

8  |     8

10 |    10

12  |    12

The choice that represents this is D. D is the correct answer.

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2 years ago
What is the most important difference between an experiment and an observational study? An experiment is conducted in a laborato
bija089 [108]

Answer:

In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment.

hope it helps :)

mark as brainliest

8 0
3 years ago
What is 0.6239 as a fraction
oksian1 [2.3K]

6239

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10000

6239 over 10000

5 0
3 years ago
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