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Karolina [17]
3 years ago
11

J ai besoin d aide le dm est pour demain et je n 'y arrive pas

Mathematics
1 answer:
Travka [436]3 years ago
7 0
I do not understand Spanish can you translate it and then send it
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Katie selling lemonade for $1.50 per cup she decides to put them on sale for $.90 what percent discount did she give on her lemo
sergeinik [125]
$1.50- $0.9
=$0.6

Percent discount=
$0.6/$1.5 x 100
=40%

Check answer=
40/100 x $1.5
=0.6

$1.5- $0.6 = $0.9

(I hope this solution help!)
5 0
4 years ago
Does anyone understand geometry well?
sp2606 [1]

Answer:

I mean sure i guess

Step-by-step explanation:

How can i help?

8 0
3 years ago
A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num
yKpoI14uk [10]

Answer: hypotenuse = c^{2} + b^{2}

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side (s_{1},s_{2}) of the right triangle, .i.e.:

h^{2} = s_{1}^{2} + s_{2}^{2}

In this question:

s_{1} = c^{2}-b^{2}

s_{2} = 2bc

Substituing and taking square root to find hypotenuse:

h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}

Calculating:

h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}

h=\sqrt{c^{4}+b^{4}+2b^{2}c^{2}}

c^{4}+b^{4}+2b^{2}c^{2} = (c^{2}+b^{2})^{2}, then:

h=\sqrt{(c^{2}+b^{2})^{2}}

h=(c^{2}+b^{2})

Hypotenuse for the right-angled triangle is h=(c^{2}+b^{2}) units

3 0
4 years ago
Write the standard form of the equation of the line described
tiny-mole [99]
Hello!

First you have to find what y is at when x is -3 in the first equation

y = 5/3(-3) + 2

y = -3

A point of the original line is (-3, -3)

The line we want has to go up 2

To do this we add 2 to the y-intercept part of the equation

y = ? + 2 + 2

Since the line is parallel it has the same slope

y = 5/3x + 2 + 2

Simplify

The answer is y = 5/3 x + 4


Hope this helps!
8 0
3 years ago
An antibiotic loses 15% of its effectiveness in each hour after it has been taken.
valina [46]

12.5mg left at 6pm

Step-by-step explanation:

500mg x 15% = 75mg/hr

Taken at 8am and by 2pm that's 6/hrs 7 x 75mg/hr = 450mg

By 2pm only 50mg are left

Taken at 8am, by 6pm that's 10/hrs

With 50mg left and 4hrs to go

50mg ÷ 4 = 12.5mg

5 0
3 years ago
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