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stellarik [79]
3 years ago
5

Tell whether the given number is a solution of each question. ( Must show work for credit)

Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0

Answer/Step-by-step explanation:

1. 9 = 2a + 3 ; 3

Let's solve for a.

9 - 3 = 2a (subtraction property of equality)

6 = 2a

\frac{6}{2} = a (division property of equality)

3 = a

a = 3

Therefore, 3 is a solution to 9 = 2a + 3

2. 5n - (-30) = 5 ; 7

5n + 30 = 5 (- × - = +)

5n = 5 - 30 (Subtraction property of equality)

5n = -25

\frac{5n}{5} = \frac{-25}{5} (division property of equality)

n = -5

Therefore, 7 is not a solution of 5n - (-30) = 5

3. 4.4r - 2.8 = 1.6 ; 1

4.4r = 1.6 + 2.8

4.4r = 4.4

\frac{4.4r}{4.4} = \frac{4.4}{4.4}

r = 1

Therefore, 1 is a solution of 4.4r - 2.8 = 1.6.

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If there are 37 figures and there are six people how many will each person get
Elis [28]

Answer:

It depends.

Step-by-step explanation:

If we're able to brake the figures, then each person will get six and one sixth of a figure

37 \div 6 = 6 \frac{1}{6}

But if we can't break them, then each person will get six figures with one remaining ungiven.

37 \div 6 = 6 \: (1)

5 0
3 years ago
If x varies inversely as y and x=2.5 when y = 40 , find y when x = 2
Illusion [34]

Answer:

2.5/40=2/y

2.5y=40x2

2.5y=80

y=80/2.5

y=32

6 0
2 years ago
Graph the line giving one point and the slope. 2x-6y=12
koban [17]
Y = mx + c  

this is the equation of line and here m is the slope

so, 2x-6y =12   can be changed into standard format

y = 2x/6 - 12/6
y=x/3 +(-2)

so, m = 1/3   , so slope will be 1/3

hope it helped :)



8 0
3 years ago
Read 2 more answers
What is the domain of the function y = <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" title="\sqrt{x}" alt="
tatiyna

Answer:

C is the answer

Step-by-step explanation:

The domain can't be minus. That's the only stipulation. It can be equal to 0 or anything larger than 0. It just can't go into the minus numbers.

0≤x<infinity.

C

4 0
3 years ago
Find the x-intercepts for the ellipse x^2/25+y^2/16=1
Kay [80]
A²=25  then a = + 5 & a =-5, so this ellipse intercepts the x axis at the points +5 & -5
8 0
3 years ago
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