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Likurg_2 [28]
3 years ago
5

Solve: 9-(3-6)^2 / 4(5+2)-9

Mathematics
1 answer:
Ksivusya [100]3 years ago
6 0
9 - (-3)^2 / 4(7) -9

9 - (9)/ 28 - 9

0/21

0/21 = 0 

hope this helps
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If the perimeter of a square is 20, find the length of a diagonal
avanturin [10]

Answer:

7.07

Step-by-step explanation:

<h2><u>Length</u></h2>

a square has equal length on each side

hence is the perimeter is 20 it means that :

each side is 20/4 = 5

we can make a diagonal line which create 3 right angled triangles

2 sides of the triangle are 5 , this is the base and the height

to find the length we can make use of the Pythagoras theorem

c^2 = a^2 + b^2

c is the hypotenuse ( the diagonal;)

a and b are the opposite and adjacent

hence :

c^2 = 5 ^2 + 5^2

c^2 = 50

c = \sqrt{50}

c = 7.071

to 3sf

<h3><u>diagonal length  = 7.07</u></h3>

6 0
3 years ago
Solve (1/8)^-3a=512^3a
lukranit [14]
Solve (1/8)^-3a = 512^3a
A=0

I took the assignment it’s right.
5 0
3 years ago
Read 2 more answers
The Nuthouse offers a mixture of soy nuts and almonds, Almonds
elena55 [62]

Answer:

  14 pounds

Step-by-step explanation:

The given equations can be solved for y by substituting for x. The first equation is convenient for writing x in terms of y.

<h3>Solution</h3>

  x = 20 -y . . . . . . . subtract y from the first equation

  7(20 -y) +5.5y = 119 . . . . . substitute for x in the second equation

  140 -1.5y = 119 . . . . . . . . simplify

  21 = 1.5y . . . . . . . . . . . add 1.5y -119 to both sides

  14 = y . . . . . . . . . . . .divide by 1.5

14 pounds of soy nuts should be used in the mixture.

__

<em>Additional comment</em>

There are many ways to solve a system of two linear equations. The attachments shows a matrix solution using a suitable calculator. It tells us that x=6 and y=14, as we found above.

6 0
2 years ago
A washer and a dryer cost $552 combined. The washer costs $98 less than the dryer. What is the cost of the dryer?
Sedaia [141]

552-98 = 450

454/2 = 227

washer cost $227

 227+98 = 325

dryer cost $325

 

5 0
3 years ago
Need help with this please.
iogann1982 [59]
Hi....

Im not sure if i got it right but i think its: 1.8........  Hope this helps. Brainliest Please
4 0
3 years ago
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