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skad [1K]
3 years ago
10

Solve the system of equations.

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0
C. (7,2) is the answer
Rudiy273 years ago
4 0
7,2 is the right  answer

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How many weeks will it take to save 475?
aleksandr82 [10.1K]

Answer: It will take 9.5 weeks

Step-by-step explanation:

7 0
3 years ago
One mole of iron (6 × 1023 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter, so the center-to-c
MrMuchimi

Answer:

a) k_{s} = 3.6 N/m ; b) 9.43 * 10¹²; c) 1.18 * 10¹¹; d) 75.08 N/m

Step-by-step explanation:

Length of iron bar = L = 2.7m;

side length of cross section = a = 0.07cm = 0.0007m;

x = 2.7 cm = 0.027m;

m = 100kg;

ρ = 7.87gm/cm³;

da = 2.28 * 10⁻¹⁰m;

a)

Fnet = F - mg

where Fnet = 0

So,

F = mg where F=k_{s}x

k_{s} = mg/x = 100*9.8/0.027

k_{s} = 3.6 N/m

b)

Nchain = Aw/Aa =a²/(da)²

                           = (o.ooo7)²/(2.28 * 10⁻¹⁰)²

                           = 9.43 * 10¹²

c)

Nbond = L/da = 2.7/2.28 * 10⁻¹⁰

                       = 1.18 * 10¹¹

d)

Spring stiffness of wire = ksi = (Nbondk_{s})/Nchain

                                      = [(1.18* 10¹¹)(6*10⁴)]/(9.43 * 10¹²)

                                      = 75.08 N/m

8 0
3 years ago
a square has a perimeter given by the expression 16x + 32y . Write an expression for the length of one side of the square
Lady_Fox [76]
Perimeter=4*side so 

side=p/4 and we are told p=16x+32y so

s=(16x+32y)/4

s=4x+8y

s=4(x+2y)
8 0
3 years ago
Hlep me pls daddddddddddddddddddddddddddddddddy
SashulF [63]

Answer:

The equation would be 2(n+3)-6. So A.

Step-by-step explanation:

It is asking you to subtract first and you cannot do that without  parentheses.

3 0
3 years ago
Read 2 more answers
Need help ASAP (Geometry) Fast!
suter [353]
6) arc length = 2*PI*R* degree/360
arc length = 2 * PI * 3 * 65/360
= 6*PI x 65/360
= 13/12*PI

Answer = C

7) drawing the lines as given would make a T shape with B being the mid point, so the answer would be C
3 0
3 years ago
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