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motikmotik
3 years ago
13

Help how many questions did you answer correctly

Mathematics
2 answers:
krek1111 [17]3 years ago
6 0
Answer:
18 questions

step-by-step explanation:
90% of 20 is 18
0.90 • 20 = 18
Lady bird [3.3K]3 years ago
4 0

Answer:

450

Step-by-step explanation:

you divide 90 by 20 and times in by 100

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Please see the photo!
hichkok12 [17]
I’m pretty sure the first one is 4 & the second one is 6; if that’s what you’re asking.
6 0
3 years ago
What percent of 760 is 646
Pani-rosa [81]

Answer:

117.65%

Step-by-step explanation:

make the assumption that 646 is 100% since it is our output value.

step 2. we next represent the value we seek with x.

step 3 . from step 1 , it follows that 100%=646

step 4. in the same vein, x%=760

step 6. this gives us our pair of equations 100%=646(1)

x%=760(2)

step 6. by simply dividing equation 2 and by taking note of the fact that both the LHS (left hand side) of both equations have the some unit (%); we have 100%=646(1) and x%=760(2)2

step 7. taking the inverse (or reciprocal) of both sides yields 100%/x% = 646/760

= 117.65%

therefore , 760 is 117.65% of 646.

7 0
4 years ago
What is the area of this parallelogram PLEASE HELP QUICKLY!!!20 points!!!
olga nikolaevna [1]

Answer:

72

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Does anyone know the answer to this question?
aliya0001 [1]

Answer:

no sorry

Exanation:

5 0
3 years ago
Explain how you find the perimeter of this right triangle even though you know the lengths of only two of the
aliya0001 [1]

Answer:

Total Perimeter of Triangle: 6.33 + 6 + 2= 14.33

Step-by-step explanation:

First of all, to find the perimeter of a triangle you need to know the measurements of all three sides. When you need to find the measurement of the slanted side, ( or hypotenuse), you need to use the Pythagorean Theorem.

a^2 + b^2 = c^2

Then, we insert the numbers:

2^{2} + 6^{2} =c^2

2^2 = 4

6^2 = 36

So, c^2 = 40 or 40^2

But wait, the number is is still squared, so the square root of 40, is 6.32455532. ( The number rounded is 6.33, or in tenths, 6.3 )

Finally, we add the measurements of all the sides on the triangle to find the perimeter, which is:

14.33 or 14.3

3 0
3 years ago
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