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3 years ago

Help Help Help I Need a,b,c

Mathematics

2 answers:

Rzqust [24]3 years ago

8 0

A) all three

B) 2

C) cello, flute, djembe, bass, ziether, guitar, piano, ukulele, lute

HOPE THIS HELPS!!!!1

marta [7]3 years ago

4 0

For 1) the tuba is taught on Tuesday, Wednesday, and Friday.
For 2) There are 2 instruments taught only on Tuesdays
For 3) Cello, Flute, Piano, Ukulele, Violin, and Lute

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How do I describe the real zeroes of this function using Descartes's Rule of Signs?

Serhud [2]

The number of positive roots is the number of changes of signs there are, then decrease by 2 each time and stop when you get to 1 or 0

negative roots, sub every x with -x and reevaluate, count change of signs
decrease by 2 each time and stop when you get to 1 or 0

y=+2x⁵-x⁴-2x³+4x²+x-2
+,-,-,+,+,-
1 2 3

3 or 1 positive roots

replace x with -x ( baically flip all signs of odd powerd numbers)

y=-2x⁵-x⁴+2x³+4x²-x-2
-,-,+,+,-,-
1 2

2 or 0 negative roots

3 or 1 positive roots
2 or 0 negative roots
2nd option is answer

4 0

3 years ago

I need help with this problem ASAP

omeli [17]

Answers: 7x^2y^2 -3x+6y

I am not sure how to explain it but here you go

7 0

2 years ago

Simplify please help

aleksandr82 [10.1K]

Answer:

4√10xy/32y is the answer. (I think)

5 0

2 years ago

Abraham has visited country somebody he has a cold or visiting at least 50 countries he plans to choose a school by visiting fiv

Ipatiy [6.2K]

Question:

Abraham has visited at least 50 countries; he plans to visit five new countries per year (Y) for the next several years. Which inequality and solution shows the amount of years they will take for Abraham to meet his goal.

Answer:

$Countries \geq 50 + 5y$

$y \leq 29$

Step-by-step explanation:

Given

$Countries = 50$ ------ at least

$Yearly =5$

Required

Represent as an inequality

"at least" means $\geq$

So the countries he has visited can be represented as thus;

$Countries \geq 50$

1 year = 5 countries

y years would be 5y countries

So, in y years; he'd have visited

$Countries \geq 50 + 5y$

To determine the value of y.

We have that

$Countries = 195$ in the world

Substitute 195 for Countries

$195 \geq 50 + 5y$

Collect Like Terms

$195 - 50 \geq 5y$

$145 \geq 5y$

Divide through by 5

$145/5 \geq y$

$29 \geq y$

Reorder

$y \leq 29$

This means that; he'll visit all countries in at most 29 years' time

3 0

3 years ago

3(9-8x-4x)+8(3x+4)=11

Papessa [141]

3(9 - 8x - 4x) + 8(3x + 4) = 11

3(9 - 12x) + 8(3x + 4) = 11

27 - 36x + 24x + 32 = 11

59 - 12x = 11

-12x = 11 - 59

-12x = -48

x = 4

hope this helps, God bless!

4 0

3 years ago