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KengaRu [80]
3 years ago
11

A lamp is on sale and it's price is reduced from $80 to $50. what is the percentage decrease?

Mathematics
1 answer:
antoniya [11.8K]3 years ago
7 0
Percentage change =Final value -Initial value / initial value * 100\
= 50 - 80 / 80 * 100
= -30/80 * 100
= -3/8 * 100
= -300/8
= -37.5%

In short, Your Answer would be -37.5%

Hope this helps!
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Please help me with this
borishaifa [10]

Answer:

42.5 square units

Step-by-step explanation:

To solve, we can split this shape up into 4 known shapes:

2 unit by 2 unit triangle

2 unit by 2 unit square

2 unit by 5 unit triangle

3.5 unit by 9.0 unit rectangle

Now let's solve these areas:

2 x 2 = 4 / 2 = 2

2 x 2 = 4

2 x 5 = 10 / 2 = 5

3.5 x 9.0 = 31.5

Then add all these values together:

2 + 4 + 5 + 31.5 = 42.5

5 0
3 years ago
What is w (7) for the function w (x)=5x+2<br><br>A. 59<br>B. 45<br>C. 37<br>D. 13​
9966 [12]

the answer to the function would be 37 because w(7) shows that the variable would equal 7. So 5x7 would equal 35 plus 2 would give you 37.

4 0
3 years ago
Will give brainlist asap
sergejj [24]

Answer: x=22

Step-by-step explanation: all the angles in a triangle equal 180 degrees. This becomes 5x+70=180. Simplify the equation it becomes 5x=110. divide by five it becomes x=22

5 0
3 years ago
Read 2 more answers
Stop and help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
nignag [31]
Test them

(x,y)
(2,4) and (3,3)
see if get true

(2,4)
-3(2)+5(4)=2(2)+3(4)
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false

(3,3)
-3(3)+5(3)=2(3)+3(3)
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7 0
3 years ago
Evaluate the expression 4-7i/7+4i
vladimir1956 [14]
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</span><span>(<span><span>4−7i/</span><span>7+4i</span></span>)(<span><span>7−4i/</span><span>7−4i</span></span>)

</span>Expand <span>(7+4i)(7−4i)</span><span> using the </span>FOIL<span> Method.
</span><span>(4−7i)(7−4i)/</span><span>7(7)+7(−4i)+4i(7)+4i(−4i<span>)

</span></span><span>Simplify.
</span><span><span>(4−7i)(7−4i)/</span>65

</span>Expand <span>(4−7i)(7−4i)</span><span> using the </span>FOIL<span> Method.
</span><span><span>4(7)+4(−4i)−7i(7)−7i(−4i)/</span>65

</span>Simplify each term<span>.
</span><span><span>28−16i−49i−28/</span>65

Simplify
</span><span><span>−65i/</span>65

</span><span>−i</span>
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3 years ago
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