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Evgesh-ka [11]
3 years ago
15

BRAINLIEST

Mathematics
1 answer:
mart [117]3 years ago
7 0

Answer:

pretty sure it's b

Step-by-step explanation:

filler filler filler

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The store clerk has 21 mugs to display on shelves. She wants to display a equal number of mugs on each shelf with no mugs left o
elena55 [62]
I believe it’s C, 21 divided by 7. This one doesn’t leave any extra mugs out cause 21 divided by 7 is 3, leaving 7 mugs per 3 shelves and having none left.
8 0
3 years ago
How many 2/3 cup servings are in 1/6 of a cup of popcorn? (in simplest fraction form) A) 1/2 B) 1/4 C) 2/3 D) 3/8
rusak2 [61]

Answer:

1/4 thus B: is your answer

Step-by-step explanation:

Simplify the following:

(1/6)/(2/3)

Multiply the numerator by the reciprocal of the denominator, (1/6)/(2/3) = 1/6×3/2:

3/(6×2)

3/6 = 3/(3×2) = 1/2:

1/(2×2)

2×2 = 4:

Answer:  1/4

7 0
4 years ago
What is<br> 3x-y=9<br> 2x-y=7
svet-max [94.6K]

Answer:

x=2 and y= -3

Step-by-step explanation:

This is a simultaneous equation. To solve this type of equation, there are three methods; substitution, Elimination and Graphical.

But here, we would be using the substitution method.

3x-y=9 Equation 1

2x-y=7. Equation 2

Getting y from equation 2, we have

-y= 7-2x

Multiply both sides by -

y= 2x-7 Equation 3

Substituting y for 2x-7 in equation 1, we have

3x- (2x-7)=9

3x-2x+7=9

x+7=9

x=9-7

x=2

Substituting x as 2 in equation 3

y=2x-7

y= 2(2)-7

y= 4-7

y= -3

5 0
3 years ago
Read 2 more answers
Find all pairs of real numbers $(x,y)$ such that $x + y = 6$ and $x^2 + y^2 = 28$. if you find more than one pair, then list you
vivado [14]
1. x^2+y^2=28 and x+y=6

2.  x^2+y^2 and x+y remind us of the formula: (x+y)^{2}= x^2+y^2+2xy

substituting we get: 

 6^{2}= 28+2xy

2xy=36-28
xy=8/2=4

3 Let's solve the system of equations i)x+y=6 and ii)xy=4

substitute y=4/x in (i): 

x+ \frac{4}{x} =6

multiply all sides by x:

x^{2} +4=6x

x^{2} -6x+4=0

complete the square:

x^{2} -6x+4=x^{2} -2*3x+9-9+4= (x-3)^{2}-5=0

x-3=\sqrt{5} or x-3=-\sqrt{5} 

x=3+\sqrt{5} or x=3-\sqrt{5}

so from x+y=6, y=6-x

case 1,  x=3+\sqrt{5} gives y=3-\sqrt{5}

case 2, x=3-\sqrt{5} gives y=3+\sqrt{5} 


Answer: 

(3-\sqrt{5}, 3+\sqrt{5}), (3+\sqrt{5},  3-\sqrt{5})
3 0
3 years ago
Teach me how to ''write each rational number in a form a/b where a and b are integers
Vesna [10]
Write the number over its next next factor of 10. Then multiply by 10s to get rid of the decimal (if there is). Then just simplify.

8 0
3 years ago
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