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katrin [286]
3 years ago
7

What is expanded form 12.38

Mathematics
2 answers:
Aleks [24]3 years ago
6 0
Expanded form = Twelve and thirty- eight hundredths.<span>
</span>
Kruka [31]3 years ago
5 0
Twelve and thirty- eight hundredths.
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Slope is 1/2 and a point is (4, -5) solve for b <br> Y=mx+b
Karo-lina-s [1.5K]

Answer:

y=1/2x-7

Step-by-step explanation:

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3 years ago
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ale4655 [162]

Answer: 0.000021 in scientific notation is

2.1 × 10-5

Step-by-step explanation:

All numbers in scientific notation or standard form are written in the form

m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

To convert 0.000021 into scientific notation, follow these steps:

Move the decimal 5 times to right in the number so that the resulting number, m = 2.1, is greater than or equal to 1 but less than 10

Since we moved the decimal to the right the exponent n is negative

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Write in the scientific notation form m × 10n

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3 0
3 years ago
If you have a cubic polynomial of the form y = ax^3 + bx^2 + cx + d and lets say it passes through the points (2,28), (-1, -5),
Marrrta [24]

Answer:

a = 3

b = 2

c = 0

d = -4

Step-by-step explanation:

Form 4 equations and solve simultaneously

28 = a(2)³ + b(2)² + c(2) + d

28 = 8a + 4b + 2c + d (1)

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-20 = -8a + 4b - 2c + d (4)

(1) + (4)

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8 = 8b + 2d

d = 4 - 4b

Equation (2)

c = -a + b + d + 5

c = -a + b + 4 - 4b+ 5

c = -a - 3b + 9

28 = 8a + 4b + 2c + d (1)

28 = 8a + 4b + 2(-a - 3b + 9) + 4 - 4b

28 = 6a - 6b + 22

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a - b = 1

a = b + 1

220 = 64a + 16b + 4c + d (3)

220 = 64(b + 1) + 16b + 4(-b - 1 - 3b + 9) + 4 - 4b

220 = 60b + 100

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a = 2 + 1

a = 3

c = -3 - 3(2) + 9

c = 0

d = 4 - 4(2)

d = -4

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3 years ago
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Rzqust [24]
1+1=2!!

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A right rectangular prism is shown. What shape best describes the cross section cut perpendicular to the base of a right rectang
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C  a rectangle. brainily says this is too short so I am writing more 
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