tim is excited because he thnks he got a higher score on a math test than his younger sister Lila.. Tim scored41 over 50 on his math test and Lila scored 21/25 on her most recent math test Tim thinks that because he got more questions correct that he got a better score. explain to Tim in your own words wisely the score is actually better than his you must convert both scores to fractions with 100 as denominators so you can think in terms of percentages
Answers
To get the first fraction to ?/100 you need to divide the denominator (50) from 100, which you would get 2, so multiply the numerator by 2 to get 82%. Same with Lila, which would be 84%.
"Tim, go get a calculator," is what I would say.
Related Questions
What is the volume of this cone?
Give the equation of the horizontal asymptote shown below.g(x)=7x^2/x^2+5 A. y= 7/5 B. y=7 C. y=5 D. x=7
I need help! algebra
How can I solve this equation.
Answers
Answer:
Step-by-step explanation:
The given equation will be of the form:
Simplifying the above equation, we get
Using identity,
=
=
=
=
which is the required simplified form of the given equation.
find the attachments for detailed solution
Answers
Answer:
To find the area of a trapezoid, we can use the formula:
Area = (1/2) × (sum of bases) × (height)
In this case, the bases are 6 cm and 2 cm, and the height is the distance between them, which we can find using the Pythagorean theorem:
height² = (side)² - (difference of bases/2)²
height² = 5.4² - (2-6/2)²
height² = 29.16 - 9
height² = 20.16
height = √20.16
height ≈ 4.49 cm
Now we can plug in these values to find the area:
Area = (1/2) × (6 + 2) × 4.49
Area = 4 × 4.49
Area = 17.96 cm²
Therefore, the area of the trapezoid is approximately 17.96 square centimeters.
Step-by-step explanation:
1; 19
–1; 19
3; 6
–3; 1
Answers
Answer:
Option B. x = -1, 19
Step-by-step explanation:
The given equation is x² - 18x = 19
We can get the value of x by factorizing the expression or by quadratic formula.
We will try to factorize the equation first. If we find no factors then we will apply quadratic formula to get the value of x.
x² - 18x - 19 = 0
x² - 19x + x - 19 = 0
x(x - 19) + 1(x - 19) = 0
(x - 19)(x + 1) = 0
x = 19, -1 will be the solutions.
So there is no need to apply quadratic formula.
Option B. x = -1, 19 is the answer.
REMEMBER THIS
ok
first, make sure that a is 1
done
now take 1/2 of b and square it
-18/2=-9, (-9)^2=81
add that to both sides
x²-18x+81=19+81
x²-18x+81=99
factor perfect square
(x-9)²=100
square root both sides
don't forget positive and negative root
x-9=10
x-9=-10
ad 9 to both sides
x=19
x=-1
answer is -1; 19
2nd choice is answer
Answers
Answer:
11= EC
Step-by-step explanation:
EC = 10 + 2 x + 19
= x + 20
So 2 x + 29 - x - 20 = 0
so x + 9 = 0
x = -9.
EC = x + 20 = -9+20 = 11.
Answer:
EC = 11 units
Step-by-step explanation:
- first we find the value of x
10 + 2x + 19 = x + 20
2x - x = 20 - 10 - 19
x = -9
--------------------------------
check
10 + 2(-9) + 19 = -9 + 20
10 - 18 + 19 = -9 + 20
11 = 11
same value the answer is good
- Now we find EC
EC = 10 + 2x + 19
EC = 10 + 2(-9) + 19 (remember PEMDAS)
EC = 10 - 18 + 19
EC = 11 units
a. 2
b. 5
c. 20
d. 10
Answers
300=15a
a=20
so the correct answer is C
Answers
The left side is the difference of 2 squares,
so we know right away, without any uncertainty
or sweat, that it can be written as
(x + 5) (x - 5) ,
and we know that it's equal to zero when either factor is zero.
Now let's look at the choices:
A. X = -1 Not a chance.
B. X = -3 Also no.
C. X = -5 Yes that's good; that would make the first factor zero.
D. X = 5 Yes that's good too; it would make the second factor zero.
E. X = 3 Not true. Don't know how they came up with it.
F. X = 1 Equally not true.
correct alternatives : C , D