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Nataly_w [17]
2 years ago
10

PLEASE HELP with math. 15 POINTS!! i need to write a justification for these 4.

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
8 0

Answer:

hi

Step-by-step explanation:

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3 years ago
Two numbers whose sum is 29 and their difference is 15
n200080 [17]

Answer:

22 and 7

Step-by-step explanation:

Let x and y be the two numbers we are looking for:

The statement “their sum is 29” means x + y = 29

The statement “their difference is 15” means x - y = 15

we get this system:

x + y = 29 (1)

x - y = 15   (2)

Let’s solve it :

(1) + (2) ⇒ x + y + x - y = 29 + 15 ⇒ 2x = 44 ⇒ x = 44/2 = 22

Now we replace x by 22 in equation (1) :

22 + y = 29  ⇒ y = 29 - 22 = 7

6 0
2 years ago
Explain why it does not matter what letter or symbols is use to find an unknown number
sineoko [7]
The letter or symbol expresses an unknown value. There is no value to a letter or symbol.

4 0
3 years ago
Read 2 more answers
1) State the amplitude, period, phase shift, vertical shift and graph
bogdanovich [222]

Answer:

See answers and explanations below (along with a visual graph)

Step-by-step explanation:

For the function y=acos(b(x+c))+d:

Amplitude: |a|

Period: \frac{2\pi}{|b|}

Phase shift: \frac{-c}{b}

Vertical shift: d

Therefore, for y=2cos(\frac{2}{3}(\theta+\pi))-1:

Amplitude: |a|=|2|=2, which is 2 units above and below the midline (see d)

Period: \frac{2\pi}{|b|}=\frac{2\pi}{|\frac{2}{3}|}=\frac{2\pi}{\frac{2}{3}}=3\pi, so the cycle will repeat every 3π units

Phase shift: \frac{-c}{b}=\frac{-\frac{2\pi}{3} }{\frac{2}{3} }=-\pi, or π units to the left

Vertical shift: d=-1, or 1 unit down

3 0
2 years ago
FREEEEEEEEEEEEEEEEEE POINTSSSSSSSSSSSS​
kondor19780726 [428]

Answer:

omg tanks u so much ^-^

3 0
3 years ago
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