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3 years ago

40% of the students in a school band play brass instruments while 4 students play strings instruments

1 answer:

5 0

10 students (brass)=40% of band
4 students (strings)=16% of band
? students (other)=44% rest of band
14/56%=?/44%
(cross multiply to find ?){don't forget to turn percents into decimals}
?=11
There are 25 students in total in the band.

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(-4s+9) + (4s-6) simplify

andrew11 [14]

Step-by-step explanation:

$= ( - 4s + 9) + (4s - 6)$

$= - 4s + 9 + 4s - 6$

$= - 4s + 4s +9 - 6$

Now subtract.....

$= \boxed{\sf{3}}$

hence the answer is 3 ....

hope it helped !!!!

6 0

2 years ago

In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5?

JulsSmile [24]

- 3 x² - 4 x + 5 = 0
$x_{1} = \frac{4+ \sqrt{16+60} }{-6} = \frac{4+8.718}{-6}$
x1 = -2.12
$x_{2} = \frac{4-8.718}{-6}$
x2= 0.786

4 0

3 years ago

Hi please help me no links thank you

olya-2409 [2.1K]

Step-by-step explanation: (I'm not gonna' do it all for you tho)

to convert from percent to fraction:

70% = $\frac{70}{100} =\frac{7}{10}$

to convert from fraction to percent:

$\frac{11}{20}=\frac{55}{100}$ = 55%

to convert from fraction to decimal:

$\frac{3}{25} =\frac{12}{100} =0.12$

to convert from decimal to fraction:

$1.25=\frac{125}{100} =1\frac{25}{100} =1\frac{1}{4}$

to convert from percent to decimal:

0.2% = $\frac{0.2}{100} =0.002$

to convert from decimal to percent:

$0.4= (0.4*100)$ % = 40%

With that, you can solve the rest on your own

4 0

3 years ago

What is the interquartile range (IQR) of the data set? a. 6 b. 7 c. 12 d. 13

Effectus [21]

Answer:

Step-by-step explanation:

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4 0

3 years ago

Read 2 more answers

If you were to graph 1.14, 1.15, and 0.5. what would you count by on your number line?

GREYUIT [131]

If you want to include 0, the overall interval is 115 times 0.01, or 23 times 0.05 or 11.5 times 0.10. The latter might make it harder to plot 1.14, so I'd probably use an interval of 0.05.

Between 6 or 7 and about 25 intervals on a graph's scale are about right. More makes it pretty busy and sometimes difficult to tell which mark is associated with the number. A fewer number is indicated only if there are a fewer number of discrete values that need to be shown to adequately identify the data points.

6 0

3 years ago