What is 80% of 400? show work
Answers
We can set up a proportion because it makes things more clear.
First, we need to assume that 400 is our '100'. Usually, 100 is our total value.
400/x=100/80
(400/x)*x=(100/80)*x
400=1.25x
400/1.25=x
320=x
x=320
Our final answer: 320
80% = 80/100 = 0.8
80% of 400 is 320.
Related Questions
Mrs. Jacobs drove at a speed of 60 km/h to her mother's house 120 km away. She picked up a box of photos and drove back home at 40 km/h.Mrs. Jacobs thought to herself, "Well, I drove 60 km/h to get there, and 40 km/h to get home. I must have averaged 50 km/h for the whole trip." Do you agree with Mrs. Jacob's conclusion? Why or why not? Can someone please help me with the above problem? Thank you!
How do I solve x^2 - 2x - 63 = 0 by completing the square? Like they showed me how here but I'm not sure how this appiles if there's already a c and it doesn't factor into something that can be perfectly squared.
What is a number is less than 3000 and if divided by 32 the remainder is 30 and if divided by 58 the remainder is 44?
The definition of term
Answers
The resultant of the given equation will be : y = 21
Given,
2/3y+y-4=31
Here,
First add the terms having same variable.
Add 2/3 y and y
2/3 y + y
= 5y/3
Now take -4 from LHS to RHS ,
5y/3 = 35
y = 7* 3
y = 21
Know more about algebra,
#SPJ6
( 2y + 3y - 12 ) / 3 = 93 / 3 ;
5y - 12 = 93 ;
5y = 105 ;
y = 21 ;
15/60 as a percentage
Answers
0.25*100=25
15/60 in % is 25%
Answer:
25%
Step-by-step explanation:
15 is 1/4 of 60, and 1/4 is 25%.
Answers
a/b = c/d where: ad = bc
1/4 : 5 = x : 8
a = 1/4 ; b = 5 ; c = x ; d = 8
get the cross products: ad = bc
1/4 * 8 = 5 * x
8/4 = 5x
2 = 5x
2/5 = x
2/5 of a pizza can be purchased for 8 dollars.
to check:
1/4 : 5 = 2/5 : 8
1/4 * 8 = 5 * 2/5
8/4 = 10/5
2 = 2
Answers
The quotient when of 13,632 ÷ 48 is 284.
What are the basic properties of arithmetic laws of operations?
There are three types of basic arithmetic laws of operation.
Commutative law for addition and multiplication states,
a + b = b + a.
a×b = b×a.
Distributive law states,
a(b ± c) = ab ± ac.
Associative law states,
a + (b + c) = (a + b) + c.
Given, we have to obtain the quotient when of 13,632 ÷ 48.
We know we can write a number as N = DQ + R, where N = number,
D = divisor, Q = quotient and R = remainder.
∴ 13632 = 48(284).
learn more about division here :
#SPJ2
-56
76
88
Answers
Answer: B) -56
Step-by-step explanation: In a quadratic equation, the discriminant helps tell you the number of real solutions and it is:
To calculate the discriminant of the given equation, we need to write it in the standard form (we equal it to zero):
here we can see that a=6; b=-4; and c=3
so the discriminant would be:
=
16-72=-56
The discriminant is found using
b²-4ac, after the quadratic is in standard form. First, we will add 6x² to both sides to write it in standard form:
3-4x=-6x²
3-4x+6x²=-6x²+6x²
6x²-4x+3=0
We can now see that b=-4, a=6 and c=3:
(-4)²-4(6)(3)
16-72
-56
B. x < 07
C. x < 17
D. x < 37
E. x < 47
Answers
6x +12>7x-35
6x-7x > -35 -12
-x > - 47
x < 47 = E