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Vsevolod [243]
4 years ago
12

There are 4 blue beads and 20 red beads

Mathematics
1 answer:
valentinak56 [21]4 years ago
6 0
2 blue= 10 red
3 blue= 15 red
30 red= 6 blue
9 blue= 45 red
10 blue 50 red
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I don't know how to factor this, what should I do to get the right answer​
lina2011 [118]

Answer:

Step-by-step explanation:

First, you can reduce it

4(n^2-11n+30)

This should make it easier to work with. But remember, keep the 4 there. You cannot just get rid of it because it would change the value of the equation

Now find factors of 30 that have a difference or ad up to 11.

Factors of 30:

1, 30

2, 15

3, 10

5, 6

Ahh  yes, 5 and 6 add to 11

4(n-5)(n-6)

7 0
4 years ago
4 strips of paneling 40cm long and 4cm wide are arranged to form a square. What is the area of the inner square in cm
Rom4ik [11]

The area of the square will be 640 sq cm.

Step-by-step explanation:

Given,

Number of strip = 4

Length (l) of each strip = 40 cm

Width (b) of each strip = 4 cm

To find the area of the inner square.

Formula

The area of rectangle = l×b

If the area of a square is A, each side will be √A

Now,

Area of each strip = 40×4 sq cm = 160 sq cm

Area of 4 strips = 160×4 sq cm = 640 sq cm

Hence,

The area of the square will be 640 sq cm.

4 0
4 years ago
what will be the total paid on an amortized loan of $15,000 for 5 years at 2 3/4% compounded monthly?
Alex73 [517]

the loan is being amortized, so that doesn't matter for its future value, the simple case that the borrower is paying it in bits monthly.

so, we're really just looking for the future value of the Principal $15000, let's convert theat mixed fraction to improper fraction, and then to a percent format firstly.


\bf \stackrel{mixed}{2\frac{3}{4}}\implies \cfrac{2\cdot 4+3}{4}\implies \stackrel{improper}{\cfrac{11}{4}}\implies \stackrel{decimal}{2.75} \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt}


\bf \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$15000\\ r=rate\to 2.75\%\to \frac{2.75}{100}\dotfill &0.0275\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &5 \end{cases} \\\\\\ A=15000\left(1+\frac{0.0275}{12}\right)^{12\cdot 5}\implies A=15000\left( \frac{4811}{4800} \right)^{60}\implies A\approx 17208.318305


how did we get 4811/4800?   well, is really just the 1+(0.0275/12), which gives us about 1.0022917 but is a repeating decimal, so 4811/4800 is just the fraction version of it.

5 0
3 years ago
78 % of the class scored a C or above on their test. If there are 35 students in the class, how many scored a C or higher? Write
konstantin123 [22]

Answer:

27 students

Step-by-step explanation:

\frac{78}{100} =\frac{x}{35} \\

cross multiply and you get 27

5 0
3 years ago
Read 2 more answers
A straight line
Nuetrik [128]

Answer:

y=4x+c

23=4(5) +c

23=20+c

23-20=c

3=c

y=4x+3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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