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3 years ago

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There are 250 students in the 6th grade. 45 percent of the students eat lunch 4th period. How many students eat lunch 4th period

?

2 answers:

Gnesinka [82]3 years ago

4 0

114 Students.

There are 114 students.

aev [14]3 years ago

3 0

Answer

About 112 students eat lunch 4th period

Step-by-step explanation:

250*.45 = 113

112.5 rounded is 112 because there can not be any half students

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Suppose you work for a sporting goods company, and you want to order shipping boxes for bike helmets. Each helmet is already pac

madreJ [45]

Answer: $n^2+6n-135=0$

Step-by-step explanation:

The length, width and height of the smaller box are n inches , n inches and 8 inches respectively,

And, According to the question,

The shipping boxes has 2 inches extra width than that of smaller box and 4 inches extra length than that of smaller box, Also, The height of the shipping box should be the same as the helmet box.

Thus, the Length of the shipping box = (n + 4) inches

Width = (n+2) inches and height = 8 inches

Thus, the volume of the shipping box,

$V = (n+4)\times (n+2)\times 8=(n^2+6n+8)8=8n^2+48n+64$

But, V = 1,144 cubic inches,

⇒ $8n^2+48n+64=1144$

⇒ $n^2+6n+8=143$

⇒ $n^2+6n-135=0$

Which is the required equation that models the volume of the shipping box.

8 0

3 years ago

Express the trigonometric ratios sinA in term of cosA

MariettaO [177]

Answer:

sinA = ± $\sqrt{1-cos^2A}$

Step-by-step explanation:

Using the Pythagorean identity

sin²A + cos²A = 1 ( subtract cos²A from both sides )

sin²A = 1 - cos²A ( take the square root of both sides )

sinA = ± $\sqrt{1-cos^2A}$

8 0

3 years ago

A delivery truck driver charges a fixed base price of $6 for 2 miles. After 2 miles, he charges an additional $2 for every mile.

Amanda [17]

Answer:

B

Step-by-step explanation:

That delivery truck driver charges a fixed base price of $6 for 2 miles.

After 2 miles, he charges an additional $2 for every mile and after 6 miles, he charges an additional $4 for every mile.

We need to describe the cost of the delivery truck between 1 mile and 2 miles.

In the given graph x-axis represents the distance in miles and y-axis represents the cost in dollars.

From the given graph it is clear that the value of function is constant between x=1 and x=2.

It means the cost of the delivery truck between 1 mile and 2 miles is constant.

Therefore, the correct option is B.

5 0

3 years ago

Shawntee has 21 coins all of them nickel and dimes that are worth $1.70. Write a system of equations and splve

Kipish [7]

N+d=21
5n+10d=170

so

multiply first equation by -5 and add to other one

-5n-5d=-105
<u>5n+10d=170 +</u>
0n+5d=65

5d=65
divide both sides by 5
d=13

sub back

n+d=21
n+13=21
minus 13 both sides
n=8

8nickles
13 dimes

8 0

3 years ago

Take away 3 from 8 times K

Alborosie

Answer:

8×k-3

Step-by-step explanation:

that would be the equation (:

7 0

3 years ago

Read 2 more answers