Solve the linear equation 2.25 – 11j – 7.75 + 1.5j = 0.5j – 1.

1 answer:

7 0

To solve for this we will follow PEMDAS to arrive at the correct answer so we have the following:
$2.25 - 11j - 7.75 + 1.5j = 0.5j - 1 \\ - 9.5j - 5.5 = 0.5j - 1 \\ - 10j = 4.5 \\ j = \frac{4.5}{ - 10} = - 0.45$
Based on calculations the correct answer is A

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Fundraising The track team needs new uniforms. The students plan to sell plush toy eagles (the school mascot) for $5 each. Th

SCORPION-xisa [38]

Answer:

Company C

Step-by-step explanation:

The first thing you want to find is called the unit price. So, in order to do that, you will have to divide the price by units. Let's start with company A. 34.20 divided by 12 = $2.85. So, that is the price for 1 eagle. Next, you divide 42.45 by 15, which equals $2.83. Finally, 45.12 divided by 16 = 2.83. So, what I did was put them in a chart like organization as shown below.

A = 2.85

B = 2.83

C = 2.82

The best price would be the one that is cheapest. So, Company C is the best buy because it is the cheapest per one eagle. Hope this helped!

3 0

4 years ago

4. Find the value of x & y from the following equation 4x+5y=90, x+y=20 a. 10, 15 b. 10, 5 c. 10, 8 d. 10, 10

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An equation is formed of two equal expressions. In the two of the given equations, the value of x and y are 10 and 10, respectively. The correct option is D.

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

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the two of the equation, which can be named as,

4x+5y=90 ...... equation 1

x+y=20 ............ equation 2

Solve the second equation for x,

x + y = 20

x = 20 - y ................ equation 3

In the first equation substitute the value of x from the third equation,

4x + 5y = 90

4(20 - y) + 5y = 90

Solving the equation for y,