Answer: it is a function because there aren't for example two 4's that don't have a y value that is a for example 0.
Step-by-step explanation:
Answer:
The length of the ladder is 50.8 ft
Step-by-step explanation:
we are given
the angle of elevation of the ladder is 74° when the bottom of the ladder is 14 feet from the side of the house
So, firstly, we will draw diagram
we can see that
angle =74
base length =14
we have to find hypotenuse
so, we can use trig formula
![cos(74)=\frac{14}{L}](https://tex.z-dn.net/?f=cos%2874%29%3D%5Cfrac%7B14%7D%7BL%7D)
now, we can solve for L
![L=\frac{14}{cos(74)}](https://tex.z-dn.net/?f=L%3D%5Cfrac%7B14%7D%7Bcos%2874%29%7D)
we get
![L=50.7913ft](https://tex.z-dn.net/?f=L%3D50.7913ft)
So,
The length of the ladder is 50.8 ft
Answer: 30 boys
Step-by-step explanation:
Boys:Girls
3 : 1
Let no. of girls =x
⇒ no. of boys =3x.
⇒ no. of students in class =4x
=
4/3×3x
= 4
/3 ×no. of boys
40=4/3* no.of boys
40* (3/4)=no.of boys
30=no of boys
Answer:
11 y + 3
Step-by-step explanation:
(6y-2) + (5y+5)
Add 6y and 5y
11y - 2 + 5
Add -2 and 5
11 y + 3
Answer:
yes, system have a solution
Step-by-step explanation:
Given data
linear equation = 6
unknown = 9
to find out
Will the system necessarily have a solution
solution
we multiply one non zero solution and we know that
A = 6 × 9 matrix
and n = 9
so dim (NulA) = 3
because we know (9-6) = 3
and rank of (A) = n - dim(NulA) = 9 - 3 = 6
so we say now here image of A i.e 6 dimensional subspace (A have 6 row)
so that Col (A) will be ![R^{6}](https://tex.z-dn.net/?f=R%5E%7B6%7D)
so its mean Ax = b has solution when we have b
so we now say that yes, system have a solution