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iVinArrow [24]
2 years ago
7

please can someone explain to me how this is done the answer is 85 but how to figure it out I am giving away 10 points the quest

ion is one the image and the answer is 85 but just explain how it is done

Mathematics
1 answer:
shtirl [24]2 years ago
3 0

Answer:

Step-by-step explanation:

A = \frac{hb}{2}

h = 10 cm , b = 17 cm

A = 10 × 17 ÷ 2 = 85 cm²

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((-2^2)(-1^-3))•((-2^-3)(-1^5))^-2
Vitek1552 [10]

Answer:

  256

Step-by-step explanation:

A calculator works well for this.

_____

None of the minus signs are subject to the exponents (because they are not in parentheses, as (-1)^5, for example. Since there are an even number of them in the product, their product is +1 and they can be ignored.

1 to any power is still 1, so the factors (1^n) can be ignored.

After you ignore all of the things that can be ignored, your problem simplifies to ...

  (2^2)(2^-3)^-2

The rules of exponents applicable to this are ...

  (a^b)^c = a^(b·c)

  (a^b)(a^c) = a^(b+c)

Then your product simplifies to ...

  (2^2)(2^((-3)(-2)) = (2^2)(2^6)

  = 2^(2+6)

  = 2^8 = 256

3 0
3 years ago
Find the slope and the y-intercept of the line.
Allushta [10]

Answer:

Slope <em>m</em> = -5/4

y-intercept <em>b</em> = 3

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

<u>Algebra I</u>

Equality Properties

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

[Standard Form]   -5x - 4y = -12

<u>Step 2: Rewrite</u>

  1. Add 5x to both sides:                    -4y = 5x - 12
  2. Divide -4 on both sides:                y = -5/4x + 3

<u>Step 3: Identify</u>

<em>Break apart the function.</em>

Slope <em>m</em> = -5/4

y-intercept <em>b</em> = 3

5 0
2 years ago
The equation for Y=x+5 and y=-2x-1
Olenka [21]
It’s y=3 i’m pretty sure
8 0
3 years ago
What is the value of -7/8 divided by -1 2/5
Zigmanuir [339]

(-7/8) / (-1 2/5) = (-7/8) / (-7/5) = (-7/8) * (-5/7) = 5/8

4 0
3 years ago
HELP
fgiga [73]

Answer:

E

Step-by-step explanation:

5 0
2 years ago
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