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Nikitich [7]
3 years ago
9

Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.

Mathematics
2 answers:
Vsevolod [243]3 years ago
8 0

Answer:

after 1 minute they will both have 9

Step-by-step explanation

1 minute  

5             9

+      

4

_________________

9                   9        

9 flashcards is how many each student will have to make.

It will take 1 minute

Korolek [52]3 years ago
3 0
Chloe and Fiane will each have 9 flash cards in 1 minute.
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Simplify and write the trig expression in terms of sin and cos
dsp73

We have:

cot(-x)cos(-x)+sin(-x)=-\frac{1}{f(x)}

Then we use trigonometric identities to change the negative sign of the trigonometric functions, so:

-sin(x)-cot(x)cos(x)=-\frac{1}{f(x)}

We clear f(x):

f(x)=\frac{1}{sin(x)+cot(x)cos(x)}=\frac{1}{sin(x)+\frac{cos(x)}{sin(x)}cos(x)}=\frac{1}{sin(x)+\frac{cos^2(x)}{sin(x)}}

we simply what we can:

f(x)=\frac{1}{\frac{sin^2(x)+cos^2(x)}{sin(x)}}=sin(x)

Thus, the correct answer is;

f(x)=sin(x)

6 0
1 year ago
NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS
Contact [7]

Answer:

C

Step-by-step explanation:

There is a common ratio between consecutive terms

r = 24 ÷ 16 = 36 ÷ 24 = 54 ÷ 36 = 1.5 = \frac{3}{2}

This indicates the sequence is geometric with nth term ( explicit formula )

f(n) = a₁(r)^{n-1}

where a₁ is the first term and r the common ratio

Here a₁ = 16 and r = \frac{3}{2} , then

f(n) = 16 (\frac{3}{2}) ^{n-1} → C

6 0
2 years ago
Solve these two equations using the Addition Method (also known as the elimination method).
Brums [2.3K]

Answer:

(-2, 3)

Step-by-step explanation:

5/2(3/4x + 1/3y = -1/2)

1/2x - 5/6y = -7/2

15/8x + 5/6y = -5/4

19/8x = -19/4

x = -2

1/2(-2) - 5/6y = -7/2

-1 -5/6y = -7/2

-5/6y = -5/2

y = 3

4 0
3 years ago
2.) Is (-1, 2) a solution to this system of equations?<br> 1-x+2y = 3<br> 12x - y - 4
gizmo_the_mogwai [7]

Answer:

12x-y-4

Step-by-step explanation:

3 0
2 years ago
Julie weights five watermelons and rounds the weights to the nearest hundredt. Which of the weights round to 7.43 pounds
blondinia [14]

Answer:

7.423

Step-by-step explanation:

5 0
2 years ago
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