3 years ago

The sum of y and 2 is greater than 5

Mathematics

1 answer:

umka2103 [35]3 years ago

7 0

$y\ \textgreater \ 3$

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Find the length of BC. <br> A.) 14<br> B.) 9<br> C.) 2<br> D.) 3

Vera_Pavlovna [14]

Answer:

A) 14

Step-by-step explanation:

BC is congruent to DC in saying this you can plug the equations to each other and solve for y and then put its back into the equation for BC to get the length.

3y+5=5y-1

subtract 3y from both sides --> 5=2y-1

add 1 to both sides --> 6=2y

now get y alone, divide by 2 by both side --> y=3

plug y in back to 5y-1 --> 5x3-1

15-1

BC = 14

7 0

3 years ago

Jennifer has 25 coins with a total value of $4.25. The coins are quarters and nickels. How many of each does she have?

kirill115 [55]

Answer:

15 quarters, 10 nickels

Step-by-step explanation:

$q+n=25$

$0.25q+0.05n=4.25$

multiply the first equation by -0.25 and add the second equation to it

$-0.25q-0.25n=-6.25\\0.25q+0.05n=4.25$
________________
$-0.2n=-2$

$n=\frac{-2}{-0.2} =10$ has 10 nickels

$q=25-n=25-10=15$ has 15 quarters

10(.05) +15(0.25) = 0.5 + 3.75 = 4.25

Hope this helps

8 0

1 year ago

Pls help me i’ll give u a brainlest

TEA [102]

Answer:

6 inches

Step-by-step explanation:

The volume of a box can be calculated with the simple formula $l\cdot w\cdot h$ , where l represents length, w represents width, and h represents height. You know that $6\cdot 13\cdot h=468$ , so dividing both sides by 13 and 6 yields h=6 inches. Hope this helps!