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agasfer [191]
3 years ago
12

For which values of x is the function y = 5 / (x-4)(x+5) not defined? Select all that apply.

Mathematics
1 answer:
rewona [7]3 years ago
5 0
f(x)=\dfrac{5}{(x-4)(x+5)}\\\\(x-4)(x+5)\neq0\iff x-4\neq0\ and\ x+5=0\\\\x\neq4\ and\ x\neq-5\\\\Answer:\boxed{-5\ and\ 4}
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What expression is equivalent to 4x-5-6x+7?
lesantik [10]

Answer:

-2x + 2

Step-by-step explanation:

you didn't post choices but combining like terms you get

-2x + 2

4 0
2 years ago
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if the unit selling price is $2.50 and the unit cost is $1.00, what action is needed to maintain the gross margin percentage whe
sukhopar [10]
You will need to raise the unit selling price... do you need know by how how much? well it it will have to be a 25% increase for the unit selling price to maintain the groos margin percentage
8 0
3 years ago
Solve by elimination. 2x+5y=-1 <br> x+2y=0
vazorg [7]

Answer:

2x+5y+1=0

y=\frac{1}{2} x

Step-by-step explanation:

3 0
3 years ago
A basketball with a radius of 24.1 cm rolls 8.0m in 11 seconds. what is the angular frequency of the ball?
Dominik [7]
The formula for angular frequency is:

ω = velocity/radius

Since we are given distance(8.0m) and time(11 seconds) , we can also express the formula as:

ω = distance/(radius)(time)

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8.0m/(0.241m)(11s)

Which would give us the answer of 3.03 seconds.

Hope this answer helps.
8 0
3 years ago
Determine whether the given triangle has no solution, one solution or two solutions. Then solve the triangle. Round measures of
yuradex [85]

Answer:

The triangle has one solution. The remaining side c ≈ 4 and remaining angles B = 30°; C = 31°.

Option D is correct.

Step-by-step explanation:

if angle A is obtuse and if a > b then the triangle has one solution

We are given ∠ = 119° which is obtuse and side a= 7 and side b - 4 i.e 7>4 so, the triangle has one solution.

Finding remaining side c and ∠B and ∠C

Using Law of sines to find ∠B

a/sin A = b/sin B

7/sin 119° = 4/sin B

7 * sin B = 4 * sin 119

7*sin B = 4(0.874)

sin B = 3.496/7

B = sin^-1(0.4994)

B = 29.96 = 30°

We know that sum of angles of triangle = 180°

So, 180° = 119° + 30° +∠C

180° = 149° + ∠C

=> ∠C = 180° - 149°

∠C = 31°

Now finding c

b/sin B = c /sin C

4/Sin 30 = c/sin 31

4* sin 31 = c*sin 30

4*0.515 = c* 0.5

=> c =  4*0.515/0.5

c = 4.12 ≈ 4

So, Option D one solution; c ≈ 4; B = 30°; C = 31° is correct.

7 0
3 years ago
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