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romanna [79]
3 years ago
9

I need help with this question someone please help ASAP! I’ll mark brainliest!!!!!

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
7 0
178 that's the answer I think
Ratling [72]3 years ago
6 0

Answer:

168 because when you add 78 and 90 then subtract that from 180 then do 180 minus 12 to get angle 1

Step-by-step explanation:


You might be interested in
The perimeter of a rectangle is 46 in and the diagonal is 17 in. Find the area of the rectangle.
OlgaM077 [116]
P=2*(L+l)=46
L+l=46:2
L+l=23
(L+l)^2=529
(L^2+l^2)+2l*L=529

D= V L^2+l^2= 17
L^2+l^2=289

so 289+2l*L=529
     2l*L=529-289=240
l*L=240:2
A=120 


5 0
3 years ago
Help please, I’m not sure
JulijaS [17]
\frac{ \frac{7}{24} }{ \frac{35}{48} } = \frac{2}{5}
4 0
3 years ago
PLZ HELP WILL GIVE 50 POINTS - QUADRATIC APPLICATIONS
Contact [7]

Answer:

The bird will be at a ground distance of 10.04 units away.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

f(x) = ax^{2} + bx + c

It's vertex is the point (x_{v}, y_{v})

In which

x_{v} = -\frac{b}{2a}

y_{v} = -\frac{\Delta}{4a}

Where

\Delta = b^2-4ac

If a<0, the vertex is a maximum point, that is, the maximum value happens at x_{v}, and it's value is y_{v}.

Equation for the height:

The height of the bird after x seconds is given by:

h(x) = -0.114x^2 + 2.29x + 3.5

Which is a quadratic equation with a = -0.114, b = 2.29, c = 3.5.

When the bird is at its highest?

Quadratic equation with a < 0, and thus, at the vertex. The ground distance is the x-value of the vertex. Thus

x_{v} = -\frac{b}{2a} = -\frac{2.29}{2(-0.114)} = 10.04

The bird will be at a ground distance of 10.04 units away.

6 0
3 years ago
What is the factorization of the trinomial below -x^2+x+42
aksik [14]
For the given trinomial

a=-1, b=1 ,c=42

We need to multiply a by c
-1 \times 42 = - 42

We split the middle term with these two factors
7,-6
To obtain,

- {x}^{2} + 7x -6x + 42
We now factor

- {x}^{2} + x + 42 \: = x( - x + 7) + 6( - x + 7)
This implies

- {x}^{2} + x + 42: = (x + 6)(7 - x)
4 0
3 years ago
Read 2 more answers
Find the missing side of a right triangle if side a=7 and side b=11.
alexira [117]

Step-by-step explanation:

c² = a² + b²

c² = 7² + 11²

c² = 49 + 121

c² = 170

now u have to square root it

c² = 170

c = 13

3 0
2 years ago
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