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Nikolay [14]
3 years ago
12

What number is 40% of 20?​

Mathematics
2 answers:
fredd [130]3 years ago
7 0
40% of 20 would be 8.
Rudiy273 years ago
7 0
Enter 40 and 20 so it equals to 8
You might be interested in
Please help!!!<br><br> i've tried to search to understand but they all look so similar
kirza4 [7]

Answer:

Since dilation is not mentioned in the answer options, thus, the correct option is 'None of the above'.

Step-by-step explanation:

We know that when an object is dilated by a scale factor, it gets reduced, stretched, or remains the same, depending upon the value of the scale factor.

  • If the scale factor > 1, the image is enlarged
  • If the scale factor is between 0 and 1, it gets shrunk
  • If the scale factor = 1, the object and the image are congruent

The figure seems to have enlarged by a certain scale factor. Thus, the figure b is a result of dilation of the original figure by a certain scale factor.

Rotation, Reflection, and translation do not affect the size of the original figure.

Since dilation is not mentioned in the answer options, thus, the correct option is 'None of the above'.

5 0
3 years ago
Please help! I do not know how to find the unknown variables using the Pythagorean theorem. Any help will be greatly appreciated
Aliun [14]

Answer:

pythagorean theorem=a squared + b squared =c squared

where c is the hypotenus(the longest part)

Step-by-step explanation:

16 squared = 8 squared +....

16 ×16=256=8×8=64 + y

256_64=192

sq. root of 192=13.85

y=180_90=90

90÷2=45

y=45

z=45

x=13.85cm

hope you understand

3 0
3 years ago
Please help worth 25 points
wariber [46]

Answer:

h=6 feet

Step-by-step explanation:

Given: 1. The base of a rectangle is three feet longer than its height.

2.Are of the rectangle=54 square meters

Let us say the rectangle has height h and base(breadth) b.

Since, the base of the rectangle is three feet longer than the height, we have b=h+3.

Also, Area of the Rectangle= hb

therefore, 54=h(h+3)

54= h2+ 3h

h2+3h-54=0 (Subtract 54 from both the sides)

To find the value of h we have to solve the quadratic equation.

[We have the equation in the form ax2+bx+c=0, to factorise the equation-

Step1. Find two numbers such that their multiplication is equal to ac and their addition is equal to b.

Step2. Replace b with these numbers.

Step3. Simplify the equation]

So, h2+3h-54=0

h2+9h-6h-54=0

h(h+9)-6(h+9)=0

(h+9)(h-6)=0

Which gives-

h= -9 or h= 6

As h is the height of the rectangle, h can not be -9.

so h=6 feet

and b=h+3=9 feet

So the dimensions of the rectangle are 6 feet for the height and 9 feet for the base.

5 0
3 years ago
I will mark brainiest is my answer is right?
Dennis_Churaev [7]
Yes, that's correct.
3 0
3 years ago
Read 2 more answers
Graph ​ y−5=−23(x+9) ​ using the point and slope given in the equation. Use the line tool and select two points on the line.
jarptica [38.1K]
Maybe try (-9, 6) and (-9,5) 
i think it may be correct
7 0
4 years ago
Read 2 more answers
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