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scZoUnD [109]
3 years ago
11

2(n2 + 1) − 3(n2 − 3) + 3(7n2 − 2), n = 1 4

Mathematics
1 answer:
lys-0071 [83]3 years ago
5 0
The correct answer is 61 :)(;
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A scale drawing of a door is 2 cm high. If the scale is 1 cm = 4 meters, what is the actual height of the door?
Vikentia [17]
Solve;

If each cm = 4 meters, then you multiply.

4*2 

= 8 

There are 2 cm, each cm = 4 meters, so you multiply to get your answer.

The final height of the door is 8 meters. 



7 0
2 years ago
Good Stuff is giving away free pens to each of the first 200 people who come in the store today. In the first hour, they gave aw
AnnyKZ [126]

Answer:

50 pens

Step-by-step explanation:

x= 25 percent of 200

25/100 times X/200

Cross multiply them and you get

100x=5000

X=5000/100

X=50

25 percent of 200 is 50.

Which means they have away 50 pens

7 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!!!!!
Natali5045456 [20]

Answer:

13.60 See the note below.

Step-by-step explanation:

Remark

This is just the reverse of the question you just did. This time you are trying to solve for c

Givens

  • a = 8
  • b = 11
  • c = ??

Solution

c^2 = a^2 + b^2        Substitute the givens.

c^2 = 8^2 + 11^2       Expand

c^2 = 64 + 121           Combine the right side by adding

c^2 = 185                   Take the square root of both sides.

sqrt(c^2) = sqrt(185)       Complete the operation

c =  13.601                   Round to the nearest 1/100 th

c = 13.60                      Note: the zero must be there or the answer does not show the nearest 1/100 th

8 0
3 years ago
A student scores 50 and 100 on two tests in class. What is his average?
9966 [12]

75% you add them together then devide by 2

6 0
3 years ago
Read 2 more answers
Jason is pulling a box across the room. He is pulling with a force of 11 newtons and his arm is making a 37 angle with the horiz
MissTica

Force=10N

Angle=37

Vertical componenets:-

\\ \sf\longmapsto Fsin\theta

\\ \sf\longmapsto 10sin38

\\ \sf\longmapsto 10(0.6)

\\ \sf\longmapsto 6N

4 0
2 years ago
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