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Iteru [2.4K]
3 years ago
11

PLEAE HELP I WILL GIVE BRAINLIST can someone please help with 4,5,6 and use the box method on a paper please I need this ( show

work ) please!

Mathematics
1 answer:
Alinara [238K]3 years ago
7 0
All the answers with workings are in those following pictures.

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Help no troll answer plz
stealth61 [152]

Answer:

Step-by-step explanation:

<u><em>Q 4.</em></u> (25m + 25m) ÷ 25 sec. = <em>2 m/sec.</em>

<u><em>Q 5.</em></u> This question belongs to Physics and not Mathematics!!!

Wavelength (lambda) = Velocity (v) ÷ Frequency ( sec^{-1} or Hz )

f = v / (lambda)

f = 3 / 2 = <em>1.5 (Hz)</em>

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7 0
3 years ago
Expand 8x - 2x + 3(-4x+9)
stiks02 [169]

Answer:

4

Step-by-step explanation:

Always do parentheses first!

-4x+9=-5x

8x-2x=6x

-5x-6x+3=

x+3=4

3 0
3 years ago
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Find the area of the parallelogram
BartSMP [9]
6*14=84
the answer is 84cm²
7 0
3 years ago
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I need help!! Please ASAP! will mark brainliest
weeeeeb [17]

Answer: I wanna go with 20,000

Step-by-step explanation:

7 0
3 years ago
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What is the length of CD ? In this diagram ABC EDC ?<br> Please help !!!!
n200080 [17]
Answer:
CD = x = 4 units

Explanation:
We are given that the two triangles are similar. This means that we can set the similarity proportionality as follows:
\frac{BC}{CD} =  \frac{CA}{CE} =  \frac{AB}{ED}

W e have:
BC = 20 - x
AC = 20
CD = x
CE = 5

Substitute in the above proportionality and solve for x as follows:
\frac{20-x}{x} =  \frac{20}{5} = 4

4x = 20 - x
5x = 20
x = 4

Based on he above:
CD = 4 units
BC = 20 - x = 20 - 4 = 16 units

Hope this helps :)
5 0
3 years ago
Read 2 more answers
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