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Ilya [14]
3 years ago
12

A stereo is marked down $105. if this is a 25% decrease, find the cost price?

Mathematics
1 answer:
Aneli [31]3 years ago
3 0
Answer:420$
Solution: 105•4= 420$
25%= 1/4 therefore we can find the original price by multiplying the decrease with 4
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A drone has an initial velocity of 38m/s. Five seconds later it reaches a velocity
timofeeve [1]

Answer:

The acceleration of the drone is 2.6 m/s²

Step-by-step explanation:

The acceleration is the rate at which the speed changes over time, therefore to solve this question we must divide the change of speed by the elapsed time in order to find the accelaration of the drone in that period. We have:

a = (Vf - Vi)/dt

Where a is the acceleration, Vf is the final velocity, Vi is the initial velocity and dt is the elapsed time. We have:

a = (51 - 38)/5 = 2.6 m/s²

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3 years ago
A pastry bag filled with frosting has
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The answer of this question is b
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Find the cost of painting a cubical block of side length 3.2 cm, if painting costs $5 per cm2.
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<h3><u>Answer</u>:- </h3>

\longrightarrow \sf \$ \: 307.2

<h3><u>Solution:-</u></h3>

Since painting is done on outer surface of cubical block we will have to find its surface area which is given by-

\green{ \underline { \boxed{ \sf{Surface \: area  \:of  \:Cube = 6a^2}}}}

  • <u>where a is side of the cube </u>

\begin{gathered}\\\quad \sf Surface \: area  \:of  \:Cube = 6\times(3.2)^2  \\\end{gathered}

\begin{gathered}\\\implies \quad \sf  6\times 3.2\times3.2   \\\end{gathered}

\begin{gathered}\\\implies \quad \sf  61.44 cm^2  \\\end{gathered}

Now,

\maltese \sf Cost  \:of  \:painting \: 1 \: cm² = \$ 5

\sf Cost \: of \: painting \: 61.44  \:cm²=61.44×5

\sf\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad=\$ 307.2

\leadstoThus it would cost $ 307.2 to paint the entire cubical block.

3 0
2 years ago
A little bit of help please? tysvm!
matrenka [14]

Answer:

A= 16 quarts  B=1 gallon

Step-by-step explanation:

There are 4 quarts to a gallon BTW. So he would have 3 more gallons left.

Hope this helps! If so can you please mark me the brainliest?

Peace and Love

8 0
2 years ago
Someone helpppppppppppppp..... Worth 20 pointsssssss it's the last question and I've been confused for the past 2 hours Write yo
Vera_Pavlovna [14]
This is so easy dud. help is on the way

4 0
3 years ago
Read 2 more answers
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