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Lapatulllka [165]
3 years ago
13

Simplify 4×3^2-3+5×2

Mathematics
1 answer:
Sophie [7]3 years ago
8 0

Answer:

43

Step-by-step explanation:

4×3^2-3+5×2

=4×9-3+5×2

=36-3+10

=43

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Rewrite x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers, to determine the a and b values.
Setler79 [48]

Answer:

Therefore values of a and b are

a=3\ and\ b = 2

Step-by-step explanation:

Rewrite x^{2}-6x+7=0 in the form

(x-a)^{2}=b

where a and b are integers,

To Find:

a = ?

b = ?

Solution:

x^{2}-6x+7=0 ..............Given

Which can be written as

x^{2}-6x=-7

(\frac{1}{2} coefficient\ of\ x)^{2}=(\frac{1}{2}\times -6)^{2}=9

Adding half coefficient of X square on both the side we get

x^{2}-6x+9=-7+9=2 ...................( 1 )

By identity we have (A - B)² =A² - 2AB + B²

Therefore,

x^{2}-6x+9=x^{2}-2\times 3\times x+3^{2}=(x-3)^{2}

Substituting in equation 1 we get

(x-3)^{2}=2

Which is in the form of

(x-a)^{2}=b

On comparing we get

a = 3 and b = 2

Therefore values of a and b are

a=3\ and\ b = 2

4 0
3 years ago
Jacob and Ashley run an animal shelter that houses only cats and dogs. they have 37 adult animals 21 cats and 16 dogs. A group o
Bond [772]
The most likely number of cats = 21/37 x 8 = 4.54 ≈ 5 cats
The most likely number of dogs = 16/37 x 8 = 3.46 ≈ 3 dogs

The probability of that arrangement happening = 1/8^2 = 1/64 = 0.00156
3 0
3 years ago
What is the area of a cylindrical ring where the diameter of the cross section is 6.3 in and the center line has a length of 48
Nesterboy [21]

Answer:

The area of cylinder 949.536 in²

Step-by-step explanation:

Points to remember

Curved surface area of cylinder = 2πrh

Where r - radius of cylinder

h - Height of cylinder

<u>To find the area of cylinder</u>

Here r = diameter/2 = 6.3/2 = 3.15 in

h = 48 in

Area =  2πrh

 = 2 * 3.14 * 3.15 * 48

= 949.536 in²

Therefore area of cylinder 949.536 in²

4 0
3 years ago
A plant measured x inches tall last week and 8 inches tall this week. Represent the number of inches the plant grew
uranmaximum [27]
To find out how many inches were gained, solve it with the expression 8 - x.
3 0
3 years ago
Read 2 more answers
It’s late! Please help me asap!
Ede4ka [16]

Answer:

D. x = 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Trigonometry</u>

  • [Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Leg <em>a</em> = 8

Leg <em>b</em> = <em>x</em>

Hypotenuse <em>c</em> = 10

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute [PT]:                    8² + x² = 10²
  2. Isolate <em>x</em> term:                      x² = 10² - 8²
  3. Exponents:                           x² = 100 - 64
  4. Subtract:                               x² = 36
  5. Isolate <em>x</em>:                               x = 6
3 0
3 years ago
Read 2 more answers
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