Hey friend in order to figure that out, we need to solve all of these proportions.
Lets start with A!
What you first want to do is cross multiply so...
10 * 100 = 25 * 40
Simplify
1000 = 25 * 40
1000 = 1000
Add -1000 to both sides
1000 - 1000 = 1000 - 1000
0 = 0. (This proportion is true)
Moving on to B
Same steps!
18 * 50 = 48 * 20
900 = 48 * 20
900 = 960 (This is false therefore B is our answer however we want to check the others as well)
C is...
25 * 135 = 45 * 75
3375 = 45 * 75
3375 = 3375
3375 - 3375 = 3375 - 3375
0 = 0 (True)
D is....
24 * 25 = 30 * 20
600 = 30 * 20
600 = 600
600 - 600 = 600 - 600
0 = 0 (True)
Step-by-step explanation:
<h3>to understand the solving steps</h3><h3>you need to know about</h3>
- linear equation
- graphing linear equation
- PEMDAS
<h3>given:</h3>
3x-2y=8
5x-3y=14
<h3>let's solve:</h3>
to graph we have to turn the both equation into this form
y=mx+b
let's do
the pictures are attached
Answer:
B = 1320
Step-by-step explanation:
Let A = number of students at Branch A
Let B = number of students at Branch B
If the number of students taking classes at Branch A is 1/4 more than Branch B, then:
If Branch A has 1,650 students, then substitute A = 1650 and solve for B:
Let's solve your equation step-by-step.
0.3(n−5)=0.4−0.2(n−7)
Step 1: Simplify both sides of the equation.
0.3(n−5)=0.4−0.2(n−7)
(0.3)(n)+(0.3)(−5)=0.4+(−0.2)(n)+(−0.2)(−7)(Distribute)
0.3n+−1.5=0.4+−0.2n+1.4
0.3n−1.5=(−0.2n)+(0.4+1.4)(Combine Like Terms)
0.3n−1.5=−0.2n+1.8
0.3n−1.5=−0.2n+1.8
Step 2: Add 0.2n to both sides.
0.3n−1.5+0.2n=−0.2n+1.8+0.2n
0.5n−1.5=1.8
Step 3: Add 1.5 to both sides.
0.5n−1.5+1.5=1.8+1.5
0.5n=3.3
Step 4: Divide both sides by 0.5.
0.5n0.5=3.30.5
n=6.6
Here's link to the answer:
tinyurl.com/wpazsebu