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2 years ago

1600, 400, 100, 25, ... O Arithmetic O Geometric O Neither

Mathematics

1 answer:

jeyben [28]2 years ago

6 0

This is a GEOMETRIC sequence as each number is being multiplied by 1/4

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Simplify:-3(x-4)+7(4-x)-2(8x-10)

olga55 [171]

Answer:

$-26x+60$

Step-by-step explanation:

First I like to write the whole equation.

$-3(x-4)+7(4-x)-2(8x-10)$

Now we should distribute where ever we see it's needed.

$-3x+12+28-7x-16x+20$

Next we combine the like terms.

$-26x+60$

That's it there's nothing else we can do now, it's in simplest form.

3 0

2 years ago

Help pls

VashaNatasha [74]

Answer:

Step-by-step explanation:

Bisection implies dividing a given segment into equal haves by construction. So that in the given question, angle ABC would be divided into equal parts.

After drawing segment AB to given length, use a compass to construct the required angle ABC. Then use the ends of the arc for the angle to bisect the angle.

The construction to this question is herewith attached to this answer for more clarifications.

8 0

2 years ago

Make r the subject of the formula t=<img src="https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7Br-3%7D" id="TexFormula1" title="\frac{r}{

Gnoma [55]

Answer:

$r=\frac{3t}{t-1}$

Step-by-step explanation:

So we have the formula:

$t=\frac{r}{r-3}$

And we want to make r the subject of the formula.

So, first, let's multiply both sides by (r-3). The right will cancel. So:

$t(r-3)=r$

Distribute the t:

$rt-3t=r$

Subtract rt from both sides. The left cancels:

$-3t=r-rt$

Factor out an r from the right:

$-3t=r(1-t)$

Divide both sides by (1-t). The right cancels:

$\frac{-3t}{1-t}=r$

Simplify the negatives:

$\frac{3t}{t-1}=r$

Flip:

$r=\frac{3t}{t-1}$

And we're done!

3 0

3 years ago

A study of consumer smoking habits includes A people in the 18-22 age bracket (B of whom smoke), C people in the 23-30 age brack

madreJ [45]

The correct question is:

A study of consumer smoking habits includes 167 people in the 18-22 age bracket (59 of whom smoke), 148 people in the 23-30 age bracket (31 of whom smoke), and 85 people in the 31-40 age bracket (23 of whom smoke). If one person is randomly selected from this sample, find the probability of getting someone who is age 23-30 or smokes

Answer:

The probability of getting someone who is age 23-30 or smokes = 0.575

Step-by-step explanation:

We are given;

Number consumers of age 18 - 22 = 167

Number of consumers of ages 22 - 30 = 148

Number of consumers of ages 31 - 40 = 85

Thus,total number of consumers in the survey = 167 + 148 + 85 = 400

We are also given;

Number consumers of age 18 - 22 who smoke = 59

Number of consumers of ages 22 - 30 who smoke = 31

Number of consumers of ages 31 - 40 who smoke = 23

Total number of people who smoke = 59 + 31 + 23 = 113

Let event A = someone of age 23-30 and event B = someone who smokes. Thus;

P(A) = 148/400

P(B) = 113/400

P(A & B) = 31/400

Now, from addition rule in sets which is given by;

P(A or B) = P (A) + P (B) – P (A and B)

We can now solve the question.

Thus;

P(A or B) = (148/400) + (113/400) - (31/400)

P(A or B) = 230/400 = 0.575

4 0

2 years ago

*PLEASE HELP WILL GIVE BRAINLIEST*

Likurg_2 [28]

The second one i think

7 0

2 years ago

Read 2 more answers