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Blizzard [7]
3 years ago
10

the age of biken is two times more than that of mousam. if the sum of their age is 30 years than find their difference age with

solution ​
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
7 0

b = 2m \\ b + m = 30 \\ m = 10 \\ b = 20

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I need help plz
shusha [124]

The solution for given linear equation systems is (3,-4).

Option: C

<u>Step-by-step explanation:</u>

The given equations are 5x+3y=3 and x+y= -1.

Let us isolate x value from equation 5x+3y=3.

5x = 3-3y.

x=\frac{3-3y}{5}.

Substitute this x value in equation x+y= -1.

\frac{3-3y}{5}+y=-1.

After taking LCM for the denominator,

\frac{3-3y+5y}{5}= -1.

3-3y+5y=-5.

2y=-8.

y=-4.

For x=\frac{3-3y}{5} substitute the y value.

x=\frac{3-3(-4)}{5}.

x=\frac{3+12}{5}.

x=\frac{15}{5}.

x=3.

∴ The solution is (3,-4).

8 0
3 years ago
Esteban has a big jar of change in his room. He has 600 coins total, and 240 of them are pennies. What percentage of the coins a
Thepotemich [5.8K]
<h2>40 % of coins are pennies.</h2>

Step-by-step explanation:

Total number of coins = 600

Total number of pennies = 240

\texttt{Percentage of the coins are pennies=}\frac{\texttt{Total number of pennies}}{\texttt{Total number of coins}}\times 100\\\\\texttt{Percentage of the coins are pennies=}\frac{240}{600}\times 100\\\\\texttt{Percentage of the coins are pennies=}\frac{240}{6}\\\\\texttt{Percentage of the coins are pennies=}\frac{120}{3}\\\\\texttt{Percentage of the coins are pennies=}40\%

40 % of coins are pennies.

3 0
3 years ago
Read 2 more answers
Evaluate the expression <br><br> x=-4.9 and y=-1.3 <br><br> -5x+7y
Flura [38]

Answer:

15.4

Step-by-step explanation:

-5×(-4.9) +7×(-1.3)

=24.5+(-9.1)

=24.5-9.1

==15.4

8 0
3 years ago
Simplify the following expression<br>(x+y)²​
MrMuchimi

Answer:

{x}^{2}  + 2xy +  {y}^{2}

Step-by-step explanation:

1) Use square sum: (a + b)² = a² + 2ab + b².

{x}^{2}  + 2xy + y^{2}

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>x</u><u>²</u><u> </u><u>+</u><u> </u><u>2xy</u><u> </u><u>+</u><u> </u><u>y</u><u>²</u>.

8 0
2 years ago
ANSWER ASAP |What is the measure of angle x?
Marina86 [1]

Answer:

x = 83°

Step-by-step explanation:

41, 56 and the missing angle = 180° ( form a straight angle )

missing angle = 180° - (41 + 56)° = 180° - 97° = 83°

The angle x and the missing angle are vertically opposite and congruent

Hence x = 83°

8 0
3 years ago
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