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stich3 [128]
2 years ago
8

Maria bought a blouse on sale for 20% off. The sale price was $28.76. What was the original price? Write an equation to model th

e situation and solve it
Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
8 0
(28.76*.2)+28.76=?
5.752+28.76=34.512
Round to the nearest tenth- $34.51
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Create an equation that has exactly one real solution. 6(3x+4)-x=_x+3
OleMash [197]

Answer:

x(x+5)=x^2-3x+8

Step-by-step explanation:

There are infinite cases of equations with exactly one real solution. To create something worth the space, this one should suffice

x(x+5)=x^2-3x+8

Operating

x^2+5x=x^2-3x+8

Simplifying

5x=-3x+8

Joining like terms

8x=8

Solving

x=1

Testing the result

1(1+5)=1^2-3(1)+8=>6=6

3 0
2 years ago
Solve mixture problems. George wishes to increase the percent of acid in 50m / of a 15% acid solution in water to 25% acid, how
fenix001 [56]

Answer:

x = amount of pure acid to be added = 6.67ml

Step-by-step explanation:

George wishes to increase the percent of acid in 50ml of a 15% acid solution in water to 25% acid, how much pure acid must you add?

let

x = amount of pure acid to be added

15% of 50 + x = 25% of 50 + x

(0.15 * 50) + x = 0.25(50 + x)

7.5 + x = 12.5 + 0.25x

Collect like terms

x - 0.25x = 12.5 - 7.5

0.75x = 5

x = 5/0.75

x = 6.6666666666666

Approximately,

x = 6.67

x = amount of pure acid to be added = 6.67ml

7 0
3 years ago
Someone please help ASAP will give brainliest
Nezavi [6.7K]
Rational:
\frac{11}{3}
6.25
0.01045
Irrational:
\sqrt{48}
\sqrt{ \frac{16}{81} }
\sqrt{ \frac{3}{16} }
0.42 \: going \: on \: forever
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State the type of angles and solve for the given variable,
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2 years ago
Find the midpoint of the segment with the following endpoints.<br> (8,5) and (0, -1)
Karo-lina-s [1.5K]

Answer:

(4,2)

Step-by-step explanation:

Midpoint =\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)\\\\\left(x_1,\:y_1\right)=\left(8,\:5\right),\:\\\left(x_2,\:y_2\right)=\left(0,\:-1\right)\\\\=\left(\frac{0+8}{2},\:\frac{-1+5}{2}\right)\\\\= (\frac{8}{2} , \frac{4}{2} )\\\\Simplify\\=\left(4,\:2\right)

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3 years ago
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