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2 years ago

Plz help!!!

Mathematics

2 answers:

jeka942 years ago

8 0

Answer:

Yes Billy is correct

Step-by-step explanation:

Think of a pizza in 4 peices on pizza had 1 clice taken out from 4 and one has 3 pieces have been taken away from 4. So therfore -3/4 is less.

GarryVolchara [31]2 years ago

7 0

Not sure just need points

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Eddie is reading a novel for English class. He read 173 out of 480 pages. About what percent of the book has he read? Round to t

tester [92]

Answer:

the answer would be 36.04,

Step-by-step explanation:

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2 years ago

Thirty percent of a radioactive substance decays in four years.

wel

Answer:

The substance decays by 7.5% every year

Step-by-step explanation:

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3 years ago

Help please!!!.......

Nitella [24]

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3 years ago

The cost of 7 chairs and 2 tables is equal.If the cost of 6 chairs and 5 tables is 10575, find the cost of 12 chairs.

Igoryamba

Answer:

5400

Step-by-step explanation:

Let x represent the cost of a chair and y represent the cost of a table. We can use this to set up a system of equations:

7x=2y

6x+5y=10575

We can solve this system using substitution.

Start by rewriting the first equation in terms of x.

$7x=2y\\\text{Divide both sides by 7}\\x=\frac{2}{7}y$

Substitute this into the second equation:

$6(\frac{2}{7}y)+5y=10575\\\frac{12}{7}y+5y+10575\\\frac{12}{7}y+\frac{35}{7}y=10575\\\frac{47}{7}y=10575$

Multiply both sides by 7

$47y=74025$

Divide both sides by 47

$y=1575$

This means...

$7x=2(1575)\\7x=3150$

Divide both sides by 7

$x=450$

One chair costs 450. Now, multiply this number by 12 to find the cost of 12 chairs.

$450*12=5400$

12 chairs cost 5400.

7 0

2 years ago

Write an equation for the nth term of the geometric sequence. Then find the 7th term. 2,-6,18,-54,...

Sonja [21]

soln,

from the series,

a = 2

t2 = -6

r = t2/a

$= \frac{ - 6}{2}$

= -3

therefore, tn =

${ar}^{n - 1}$

$= {2 \times - 3}^{n - 1}$

now,

seventh term =

${2 \times - 3}^{7 - 1}$

$= {2 \times - 3}^{6}$

$= 2 \times 729$

$= 1458$

5 0

3 years ago