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mario62 [17]
3 years ago
9

Solve 2x^2 + 6x = 36 by graphing the related function.

Mathematics
2 answers:
Tom [10]3 years ago
8 0
Sorry I can’t help but yea
Artyom0805 [142]3 years ago
8 0

Answer: 3 or -6

Step-by-step explanation:

2x2+6x=36

Collect like terms

2x2+6x-36=0

Divide all by 2

X2+3x-18=0

Factorise

Factors of -18 that will give +3 is +6&-3

X2+6x-3x-18=0

X(x+6)-3(x+6)=0

(X-3)(x+6)=0

X-3=0

X=3

X+6=0

X= -6

X= 3 or -6

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Translate this phrase into an algebraic expression.
Verizon [17]

Answer:

Step-by-step explanation:

9n-2

5 0
3 years ago
If f(x)=4-11 what is the value of f(5)
Sveta_85 [38]

f(5) = 9

Do this by substitution:

f(x) = 4x - 11

f(5) = 4(5) - 11

f(5) = 20 - 11

f(5) = 9

3 0
3 years ago
Identify the angles relationship
anygoal [31]
Answer:

Adjacent

Step-by-step explanation:

Adjacent angles are two angles that have a common vertex and a common side but do not overlap

5 0
3 years ago
A lighthouse keeper views a small boat at an angle of depression of 62 degrees. The boat is 446 feet away from the base of the l
Genrish500 [490]

Answer: the height of the lighthouse is 838.8 feet

Step-by-step explanation:

The right angle triangle ABC illustrating the scenario is shown in the attached photo.

The angle of depression and angle A are alternate angles, hence, they are the equal.

The height, h of the lighthouse represents the opposite side of the right angle triangle. The distance of the boat from the foot of the lighthouse represents the adjacent side of the right angle triangle.

To determine h, we would apply

the tangent trigonometric ratio.

Tan θ, = opposite side/adjacent side. Therefore,

Tan 62 = h/446

h = 446tan62 = 446 × 1.8807

h = 838.8 feet to the nearest tenth.

4 0
4 years ago
PLEASE MATH HELP ALGEBRA 1
S_A_V [24]
F(x) shows number of bees and g(x) shows number of flowers
f(x)=1500*(0.88)^n
g(x)=800-25n
n shows month
B)n=6
1500*(0.88)^6=696
800-25*6=800-150=650
c)it's hard to say because you should find n in this equation
1500*(0.88)^n=800-25n
but it seem n is between 6 and 7


3 0
4 years ago
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