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3 years ago

Use the commutative and associative properties as needed to simplify the expression. (12+a)+14

Mathematics

1 answer:

timama [110]3 years ago

6 0

Answer:

26+a

Step-by-step explanation:

(12+a)+14

(12+14)+a

26+a

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A soccer field has a perimeter of 326 metres. Its area is 6370 square metres. What are the dimensions of the field?

Burka [1]

Answer:

Step-by-step explanation:

chiều dài:x,x>0

chiều rộ:y

$\left \{ {({x+y)*2=326} \atop {xy=6370}} \right.$

$\left \{ {{x+y=163} \atop {xy=6370}} \right.$

$\left \{ {{y=163-x} \atop {xy=6370}} \right.$

$\left \{ {{y=163-x} \atop {x*(163-x)=6370}} \right.$

$\left \{ {{y=163-x} \atop {163x-x^{2} =6370}} \right. \\$

$\left \{ {{y=163-x} \atop {x_{1} =98; x_{2} =65}} \right.$

$\left \{ {{y=65} \atop {x=98}} \right.$

4 0

3 years ago

When calculating for volume, you use the area of the 2D shape. <br><br> True or false.

Nana76 [90]

Answer:

I think true.

Step-by-step explanation:

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

5 0

3 years ago

Read 2 more answers

Did I solve correctly?

faust18 [17]

$5 {x}^{2} + 536 = 651 \\ 5 {x}^{2} = 651 - 536 =115 \\ {x}^{2} = \frac{115}{5} = 23 \\ x = + - \sqrt{23} = + - 4.79$

6 0

3 years ago

Find the value of X please

vaieri [72.5K]

Answer:

x=2/3

Step-by-step explanation:

6x+6=10

7 0

3 years ago

What is the length of the hypotenuse,c ? 3m 5m

UkoKoshka [18]

Answer:

square root of 34

Step-by-step explanation:

ok so S is for Squared

Cs= As+Bs

5s+3s= Cs

25+9=34

Cs=34

C= square root of 34

to get C we need to square root Cs

square root of 34

so C is 5.83

5 0

3 years ago