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Maslowich
3 years ago
14

Increase 400 by 20% please

Mathematics
1 answer:
storchak [24]3 years ago
3 0
480 is the answer i hope it is correct
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(42) A school only provides bus service
Nostrana [21]

Answer:

~1.8 mile

Step-by-step explanation:

Michael lives at the closest  point to the school (the origin) on Maple Street,  which can be represented by the line  y = 2x – 4.

This means Michael's house will be the intersection point of line y1 (y = 2x - 4) and line y2 that is perpendicular to y1 and passes the origin.

Denote equation of y2 is y = ax + b,

with a is equal to negative reciprocal of 2 => a = -1/2

y2 pass the origin (0, 0) => b = 0

=> Equation of y2:

y = (-1/2)x

To find location of Michael's house, we get y1 = y2 or:

     2x - 4 = (-1/2)x

<=> 4x - 8 = -x

<=> 5x = 8

<=> x = 8/5

=> y = (-1/2)x = (-1/2)(8/5) = -4/5

=> Location of Michael' house: (x, y) = (8/5, -4/5)

Distance from Michael's house to school is:

D = sqrt(x^2 + y^2) = sqrt[(8/5)^2 + (-4/5)^2) =  ~1.8 (mile)

4 0
3 years ago
Are the terms 3y and - y like terms?<br><br> Yes/No
Dennis_Churaev [7]

Answer:

No

Step-by-step explanation:

8 0
3 years ago
What is the product? <br> (-2d^2+s)(5d^2-6s)
Anna71 [15]

Answer:

Option 1: -10d⁴ + 17d²s - 6s²

General Formulas and Concepts:

<u>Algebra I</u>

  • Terms/Coefficients
  • Expand by FOIL

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(-2d² + s)(5d² - 6s)

<u>Step 2: Expand</u>

  1. FOIL:                                                                                                                  -10d⁴ + 12d²s + 5d²s - 6s²
  2. Combine like terms:                                                                                         -10d⁴ + 17d²s - 6s²
6 0
3 years ago
You are buying flowers for your algebra teacher. You buy a total of 30 flowers that are a mixture of roses and daisies for $66.
Anastasy [175]
Well, you’d buy 12 roses and 18 daisies, but in the first place you shouldnt buy flowers for your algebra teacher >.>
7 0
3 years ago
Gabriel Harris earns an annual salary of $156,000 as CFO of
viktelen [127]

Answer:

Step-by-step explanation:

Gabriel Harris earns an annual salary of $156,000 as CFO ofTechMedia, Inc. He is married and claims three dependents. TechMediarecently converted from a weekly pay plan to a monthly pay plan.How much more will Gabriel have deducted from his monthly paythan from his weekly pay for state income tax?

5 0
1 year ago
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