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iogann1982 [59]
3 years ago
15

Simplify the following expression 7 y + 2x - 10 y + 3 x^2 -10x​

Mathematics
2 answers:
tiny-mole [99]3 years ago
4 0

Answer:

3x^{2} -3y-8x

Step-by-step explanation:

Combine like terms

7y + -10 y = -3y

2x + -10x = -8x

3x^{2} -3y-8x

Serggg [28]3 years ago
4 0

Answer:

3x^2 - 8x - 3y

Step-by-step explanation:

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Henry know that the circumference of a circle is 18 pie inches. What is the area of the circle?
Leto [7]

Answer:

B: 81π inches

Step-by-step explanation:

The formula for the circumference of a circle is C = πd and the formula for the area of a circle is A = πr²

  • The formula for the circumference of a circle can also be written as C = 2πr since the diameter is equal to double the radius (d = 2r)
  • So we need to solve for r since that is the variable we are missing in order to solve for the area

Plugging in our known values to the circumference formula we have:

  • 18π = 2πr
  • Then dividing both sides by 2π we have 9 = r

Now that we have solved for the radius, we can plug in this value to the area formula:

  • A = π(9)² = 81π in
3 0
4 years ago
Helpppppp due today!!!!!!!!!
Luba_88 [7]
It is the answer of .6 i think
8 0
3 years ago
A rectangle has a perimeter of 124 units. If the length is 5 more than 2 times the width, what is the width.
Fantom [35]

Answer:

19 units

Step-by-step explanation:

Perimeter of the rectangle = 124 units

width = x units

length = 5 + 2x units

The perimeter of a rectangle is given by;

P = 2(l + b)

Substituting values;

124 = 2[(5 + 2x) + x]

124 = 2[5 + 3x]

124 = 10 + 6x

124 - 10 = 6x

114 =6x

x= 114/6

x = 19

width = 19 units

7 0
3 years ago
5470
nadya68 [22]

Answer:  1144

Step-by-step explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes \dfrac{7}{10} parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes \dfrac{16}{15} parts in 1 minute.

On Monday,

machine A makes parts for 12 hours(720 minutes).    [1 hour = 60  minutes, 12 hours = 12 x 6 = 720 minutes]

i.e. Total parts made = \dfrac{7}{10}\times720

i.e. Total parts made = 504

machine B makes parts for 10 hours(=60x 10=600 minutes)

i.e. Total parts made = \dfrac{16}{15}\times600

i.e. Total parts made = 640

Total parts made by both machines = 504+640 =1144

Hence, the total number of parts made by the two machines on Monday=1144.

7 0
3 years ago
If a matrix is not invertible, can I say the matrix has many solutions? Or is the matrix has many solutions as well as the possi
zysi [14]
<span>If a matrix is invertible, there are many solutions to Ax=0,  I am referring to both homogeneous and non-homogeneous types.</span>
8 0
3 years ago
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