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4 years ago

Erica had 6 coins in her coin collection. She goes to a coin show and buys some more coins. How many does she have now?

Mathematics

1 answer:

Svetlanka [38]4 years ago

4 0

Why would she be paying for another form of currency is the real question?

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1/X 1/4=7/12 solve and check solution

liraira [26]

$\frac { 1 }{ x } +\frac { 1 }{ 4 } =\frac { 7 }{ 12 } \\ \\ \frac { 1 }{ x } =\frac { 7 }{ 12 } -\frac { 1 }{ 4 }$

$\\ \\ \frac { 1 }{ x } =\frac { 7 }{ 12 } -\frac { 3 }{ 12 } \\ \\ \frac { 1 }{ x } =\frac { 4 }{ 12 } =\frac { 1 }{ 3 } \\ \\ 3x\cdot \frac { 1 }{ x } =\frac { 1 }{ 3 } \cdot 3x\\ \\ x=3$

6 0

3 years ago

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Help ill give brainlest pls

Ber [7]

Answer:

( 6, 12 )

Step-by-step explanation:

The coordinates of C is ( 6, 12 ).

5 0

3 years ago

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There are 130 people in a sport centre.

Delvig [45]

Answer:

1/13

Step-by-step explanation:

there are 10 people that use the gym and track and 10 is 1/13 of 130

7 0

3 years ago

The rocket that carried the curiousity rover to mars traveled at a speed o 21,000 miles per hour. what is the speed to the neare

denpristay [2]

Roughly 347 miles per minute or roughly 6 miles per second.

5 0

4 years ago

In this figure, m∠1 = ( 3x + 10) and m∠5 =(4x+2) <br><br> What value of x makes a ll b ?

Leni [432]

Answer:

x=8

Step-by-step explanation:

Angles 1 and 5 are corresponding angles.

If angles 1 and 5 are congruent, then the lines are parallel.

This means the measurement of angle 1 needs to equal the measurement of angle 5.

This is the equation we must solve:

3x+10=4x+2

Subtract 3x on both sides:

10=1x+2

Subtract 2 on both sides:

8=1x

Use multiplicative identity property:

8=x

So if x=8, then the angles 1 and 5 which are corresponding are congruent.

If corresponding angles are congruent, then the lines are parallel.

8 0

4 years ago