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olasank [31]
3 years ago
8

Find the solution of this system of linear

Mathematics
1 answer:
bezimeni [28]3 years ago
8 0
8x - 19 = 36
8x = 55
x = 55/8 = 6 7/8

-2x + 19 = -66
-2x = -85
2x = 85
x = 42 1/2
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(2x-3)(3x+4) expand and simplify
elixir [45]

Answer:

6x² - x - 12

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor.

(2x - 3)(3x + 4)

= 2x(3x + 4) - 3 (3x + 4) ← distribute both parenthesis

= 6x² + 8x - 9x - 12 ← collect like terms

= 6x² - x - 12 ← in expanded form


5 0
3 years ago
A rectangular field has an area 28800 sq.meter.its length is twice as long as its width.what is the length of its sides?
AVprozaik [17]
Let 
x---------> the length side of rectangle
y---------> the width side of rectangle

we know that
x=2y-----> equation 1
area=x*y-------> 28800=x*y------> equation 2
substitute 1 in 2

28800=[2y]*y-----> 28800=2y²-------> y²=14400------> y=120 m
x=2*y----> x=2*120------> x=240 m

the answer is
the length side of rectangle is 240 m
 the width side of rectangle is 120 m


5 0
3 years ago
Explain how you can use mental math to compare 7 pounds to 120 ounces.
Eva8 [605]
One pound consists of 16oz, you have 120oz. If you divide 120 and 16 you get 7.5 lbs. so therefore you have more oz than lbs.
3 0
4 years ago
If u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to (StartFraction u Over v EndFraction) (x)?
Maslowich

Based on the calculations, an expression which is equivalent to [u/v](x) is: C. -x³ + x² - 1.

<u>Given the following data:</u>

  • u(x) = x⁵ – x⁴ + x²
  • v(x) = -x²

<h3>What is an expression?</h3>

An expression is a mathematical equation which is used to show the relationship that exist between two or more numerical quantities or variables.

In this exercise, we would evaluate the given expressions by factorizing the function u(x) as follows:

u(x) = x⁵ – x⁴ + x²

u(x) = x²(x³ – x² + 1)

Rewriting the expressions as a fraction, we have:

\frac{u(x)}{v(x)} = \frac{x^2(x^3 - x^2 + 1)}{-x^2}\\\\\frac{u(x)}{v(x)} = -(x^3 - x^2 + 1)\\\\\frac{u(x)}{v(x)} = -x^3 + x^2 - 1

Therefore, u(x)/v(x) = -x³ + x² - 1.

Read more on expressions here: brainly.com/question/12189823

#SPJ1

5 0
2 years ago
List the descriptors used to interpret a scatterplot and provide a brief explanation for each
Monica [59]
<span>The descriptors used to interpret a scatterplot are strength, association and trends. The strength determines how closely the dots fall to the line, the association is the general direction in which the dots fall, and the trend or shape lets one know if the graph is linear or non-linear.</span>
8 0
4 years ago
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