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abruzzese [7]
3 years ago
14

Choose the answer that solves the equation:

Mathematics
2 answers:
pentagon [3]3 years ago
7 0
D) 36
7 - 3 + 5 = 9 × 4 = 36
allsm [11]3 years ago
3 0

Answer:b

Step-by-step explanation:

You might be interested in
Pls help simple stuff
vitfil [10]

Answer: 2) 4x - 8 - 8y

Step-by-step explanation:

if xy=4

then y(x-4)(x+2)                                use foil method with parenthisies to get

y(x²+2x-4x-8)                                  foil again

x²y+2xy-4xy-8y                               plug 4 in for xy

x²y+2(4)-4(4)-8y                               solve what u can

x²y+8-16-8y= x²y-8-8y            

for x²y if you take out the exponent you have an xy and an x so when u plug in 4 you get 4x ending up with a solution of

4x-8-8y

Hope that helped

3 0
3 years ago
The area of a square garden is 128m sqared.how long is the diagonal
weqwewe [10]

The area of a square is  (side)².
If the area is  128m², then the side is  (√128) meters. (That's 8√2.)

The diagonal is the hypotenuse of the right triangle you get
if you slice the square in half along the diagonal.  Its length is
given in the words of Old Pythagoras:

               c² = a² + b²

'a' and 'b' are sides of the square, so

             c² = (√128)² + (√128)²

                 =    2 (√128)²

              c  =  √ (2 x 128)  =  √256  =  16 meters . 

4 0
3 years ago
Read 2 more answers
b) 7 of these cuboids of side 3 cm are put together to make this shape. Find the surface area of this shape. (3) Total marks: 5
valentina_108 [34]

Answer:  504 cm^2

The surface area of the shape is:

3 3 * 3=9

9 * 7=63

63+9=72 * 7

=504cm^2

6 0
2 years ago
A company manufactures keyboards for desktop and laptop computers. The desktop keyboard contains 105 keys and the laptop keyboar
Luba_88 [7]

The company can produce 20 desktop keyboards and 10 laptop keyboards

Step-by-step explanation:

A company manufactures keyboards for desktop and laptop computers

  • The desktop keyboard contains 105 keys
  • The laptop keyboard has 90 keys
  • The company has 3000 keys
  • The company needs to produce twice as many desktop keyboards as laptop keyboards

We need to find how much of each type the company can produce

Assume that the company can produce x desktop keyboards and

y laptop keyboards

∵ The company can produce x desktop keyboards

∵ company can produce y laptop keyboards

∵ The desktop keyboard contains 105 keys

∵ The laptop keyboard has 90 keys

∵ The company has 3000 keys

- Write an equation to represent the total keys

∴ 105 x + 90 y = 3000 ⇒ (1)

∵ The company needs to produce twice as many desktop keyboards

   as laptop keyboards

∴ x = 2 y ⇒ (2)

Substitute x in equation (1) by equation (2)

∵ 105(2 y) + 90 y = 3000

∴ 210 y + 90 y = 3000

∴ 300 y = 3000

- Divide both sides by 300

∴ y = 10

∴ The company can produce 10 laptop keyboards

Substitute the value of y in equation (2) to find the value of x

∵ x = 2(10)

∴ x = 20

∴ The company can produce 20 desktop keyboards

The company can produce 20 desktop keyboards and 10 laptop keyboards

Learn more:

You can learn more about the system of equations in brainly.com/question/2115716

#LearnwithBrainly

6 0
3 years ago
14 a and b please help
satela [25.4K]

Step-by-step explanation:

14a. One method is two solve for x. Edit: I accidentally press sent. Repost the question and I'll answer it.

6 0
3 years ago
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