3 years ago

Please help me i need help on this

Mathematics

1 answer:

charle [14.2K]3 years ago

8 0

(x+y)² finds the area of the outer square, squaring its side length

z² + 4(1/2 xy) finds the area of the outer square by adding...

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estimate a 15% tip on a dinner bill of $49.75 by rounding first bill amount to the nearest ten dollars

AlladinOne [14]

Answer:

60.00

Step-by-step explanation:

49.75 + 15%(7.46) = 57.21

7 0

3 years ago

10x +2y = 64

Musya8 [376]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}10x+2y=64&\text{multiply both sides by 2}\\3x-4y=-36\end{array}\right\\\underline{+\left\{\begin{array}{ccc}20x+4y=128\\3x-4y=-36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad23x=92\qquad\text{divide both sides by 2}\\.\qquad x=4\\\\\text{put the value of x to the first equation:}\\\\10(4)+2y=64\\40+2y=64\qquad\text{subtract 40 from both sides}\\2y=24\qquad\text{divide both sides by 2}\\y=12$

5 0

3 years ago

1 1/4 as a improper fraction

ludmilkaskok [199]

That would be
5/4
.
Explanation:
This answer is valid because, when you multiply
4
×
1
, you get
4
. Then add one and keep the denominator, you will get
5
4
.
1
1
4
=
1
×
4
+
1
4
=
5
4
When you simplify
5
4
, you will get
1
1
4
Have a great day!

8 0

3 years ago

Read 2 more answers

Which of the following sets of ordered pairs represents a function

Feliz [49]

Answer: A

Step-by-step explanation:

Each value of x maps onto only one value of y.

8 0

1 year ago

Of all the listeners who call the local radio station on the telephone , 60% are between the ages of 15 and 25. a random number

aivan3 [116]

Answer:

Step-by-step explanation:

1 will be B, dont know bout 2

7 0

2 years ago