Solve simultaneously:
<span>15x-8y=52 and
6x+14y=38
</span>
Let's solve this system thru elimination by addition/subtraction:
Let's get rid of the x terms.
To do this, mult. the first eqn. by -6 and the second by 15. (This is not the only way in which we can do this!!) We get
-90x + 48y = -312
90x +210y = 570
--------------------------
Add all 3 columns together. We end up with:
258y = 258, so y = 1. You can find x by subst. 1 for y in either of the given equations.
If you'd like more help, please be specific about what you want.
Answer:
The would be 69.23%
Step-by-step explanation:
27:39*100 =
(27*100):39 =
2700:39 = 69.23
hope that helps
Answer:
#1
6 × n + 15 = -42
6n + 15 = -42
6n = -42 - 15
6n = -57
n = -57/6
n = -19/3
#2
b + 3/2b + b + 45 + 2b - 5 + 90 = 540
b + 1.5b + b + 45 + 2b - 5 + 90 = 540
5.5b + 130 = 540
5.5b = 540 - 130
5.5b = 410
b = 410/5.5
b = 74.5
Angles are
b = 74.5
1.5(74.5) = 111.75
74.5 + 45 = 119.5
2(74.5) - 5 = 144
Answer:
A vertex (or node) of a graph is one of the objects that are connected together. The connections between the vertices are called edges or links. A graph with 10 vertices (or nodes) and 11 edges (links). For more information about graph vertices, see the network introduction.
The 15th percentile is the value x such that
P(X ≤ x) = 0.15
Let Z be a random variable following the standard normal distribution with mean 0 and standard deviation 1. Then
X = 57 + 4Z
or
Z = (X - 57)/4
so that
P((X - 57)/4 ≤ (x - 57)/4) = 0.15
P(Z ≤ (x - 57)/4) = 0.15
If F is the inverse CDF for the standard normal distribution, then
(x - 57)/4 = F(0.15) ≈ 0.5596
x - 57 ≈ 2.2385
x ≈ 59.2385