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ElenaW [278]
3 years ago
12

Help me please will give brainleist

Mathematics
2 answers:
34kurt3 years ago
7 0

Answer:

sound travels fastest in solids

Step-by-step explanation:

the particles are more close together therefore the sound can travel faster :D

Black_prince [1.1K]3 years ago
6 0

Answer:

sound travels faster in solids than gases

Step-by-step explanation:

so we can see the bigger of a difference between air and a piece of glass. so "empty space" is out because the glass one is faster, the third option is a choice but sound can't travel in space so its not an op6

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Paul [167]

Answer:

Triangle- (height × base)/2

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8 0
3 years ago
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3. Solve each of the following constant coefficient ordinary differential equations: (10 pts] a) y"+ 3y'- 28y = 0
eduard

Answer:

y(t) = C_1e^{4t} + C_2e^{-7t}

Step-by-step explanation:

We are given the following information in the question:

y''+3y'-28y = 0

This can be written as:

(D^2 + 3D - 28)y = 0

The auxiliary equation obtained is:

m^2+ 3m - 28 = 0\\ m^2 + 7m - 4m - 28 = 0\\m(m+7)-4(m+7)=0\\(m-4)(m+7)\\m = 4, m = -7

Thus, the general solution of the equation is:

y(t) = C_1e^{4t} + C_2e^{-7t}\\\text{where } C_1, C_2 \text{ are constants}

6 0
3 years ago
What is the multiplicative inverse of 1/2
OlgaM077 [116]
The answer is negative two.
6 0
3 years ago
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Letters a, b, c, and d are angles measures.
seropon [69]
The answers are:

a = c

c = d

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Here's how:

When a line intersects two parallel lines, then corresponding angles are formed which means the same corners are congruent.

option c = d is considered.

And, because of vertical angles,

a = d is also an answer.

Below is an attached picture of the figure

7 0
3 years ago
Given that 1 inch = 2.54 cm, how many centimeters are there in 6 feet? Answer may be written using decimal form and should be ro
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12in in a foot

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5 0
3 years ago
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