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Genrish500 [490]
3 years ago
7

There are students from 6th grade, 7th grade, and 8th grade in band. The 7th grade students make up 20%

Mathematics
2 answers:
sammy [17]3 years ago
7 0

Answer:

400

Step-by-step explanation:

40% of 7th grade is equal to 80

if 80 students from 7th grade makes up 20% then there's 400 students in the band.

Bond [772]3 years ago
3 0

Hey!

------------------------------------------------

~Turn into decimal

40% = 0.4

~Multiply

200 * 0.4 = 80 (7th graders in the band)

Now, we can write this as 80 is 20% of what number.

~Turn into decimal

20% = 0.2

~Divide

80 / 0.2 = 400

------------------------------------------------

Hence, there are \Large\boxed{\mathsf{400}} students in band!

------------------------------------------------

Hope This Helped! Good Luck!

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1.a  linear function grows by equal amounts over equal intervals

2. a linear function can decrease by equal amounts over equal intervals

4. a linear function can be modeled using the equation y=mx+b

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4 0
4 years ago
A race track is made up of a rectangle shape 750 m by 500 m semi circles at each end. Marisol drives the track once at average s
Mkey [24]

Answer:

d=3071m

Step-by-step explanation:

From the question we are told that:

Dimension Of rectangle

Length l=750m

Breath b=500m

Velocity v=140kmh

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 d=2(l)+2(arc\ of\ the\ semi\ circle)

 d=2(l)+2( 2\pi r (\frac{\theta}{360}))

Where

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Therefore

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5 0
3 years ago
Mario invested $475 in $45 and $25 stock shares. The number of $25 shares was 5 less than 3 times the number of $45 shares. How
Anit [1.1K]

\text{Answer : Number of \$45 shares} =120

\text{Number of \$25 shares }\\\\= 3\times 120-5\\\\=360-5\\\\=\$355

Explanation:

Let Number of $45 shares be x

Let number of $ 25 shares be 3x-25

According to question,

x+3x-5=475\\\\4x-5=475\\\\4x=475+5\\\\4x=480\\\\x=\frac{480}{4}\\\\x=120

So,

\text{Number of \$45 shares} =120

\text{Number of \$25 shares }\\\\= 3\times 120-5\\\\=360-5\\\\=\$355


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