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Marrrta [24]
3 years ago
15

Plzzz help so i want fail

Mathematics
1 answer:
stepladder [879]3 years ago
3 0

Answer:

B

Step-by-step explanation:

There is 1 oboe for every seven clarinets, so the ratio is 1/7

all the answers in the one are just 1/7 written differently, but when you reduce them all, they all end up being 1/7.

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The number of club members is at least 25
gladu [14]
5 x 5 is your answer
Have a great day
4 0
3 years ago
Simplify a5 ÷ a4, a ≠ 0.<br> A) 5a<br> B) a<br> C) 4a<br> D) 1
wel
I assume you mean a^5 divided by a^4. This is a rule that applies to all exponents in that when you divide exponents, you subtract the top from the bottom. So, 5-4 is 1 and that would the answer is b
8 0
3 years ago
A store owner paid $15 for a book. She marked up the price of the book by 40% to determine its selling price. What is the sellin
densk [106]

Answer:

the selling price is 21 dollars

7 0
2 years ago
Form a polynomial f(x) with real coefficients having the given degree and zeros.
dimaraw [331]
There are many polynomials that fit the bill,
f(x)=a(x-r1)(x-r2)(x-r3)(x-r4)  where a is any real number not equal to zero.
A simple one is when a=1.
where r1,r2,r3,r4 are the roots of the 4th degree polynomial.
Also note that for a polynomial with *real* coefficients, complex roots *always* come in conjugages, i.e. in the form a&pm;bi  [&pm;=+/-]

So a polynomial would be:
f(x)=(x-(-4-5i))(x-(-4+5i))(x--2)(x--2)
or, simplifying
f(x)=(x+4+5i)(x+4-5i)(x+2)^2
=x^4+12x^3+77x^2+196x+164   [if you decide to expand]
6 0
3 years ago
Find the direction angle of 3i+1j.<br><br> Please help me. Thank you
Alekssandra [29.7K]

Answer:

Correct answer:  ∝ = 18.43°

Step-by-step explanation:

Given coordinates represent one vector in x-y plane, let be v.

v = 3i +1j = xi + yj => x = 3 and y = 1

The angle that this vector builds with the positive direction to the x axis will be found using the tangent.

∝ = tan⁻¹ y/x = tan⁻¹ 1/3 = tan⁻¹ 0.333 = 18.43°

∝ = 18.43°

God is with you!!!

4 0
3 years ago
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