Heidi must correctly answer at least 80% of the questions on an exam to advance to the nextlevel in her online course. Heidi has already correctly answered 26 questions and incorrectly
answered 4 questions. How many of the 15 questions remaining must Heidi correctly answer
to advance to the next level?
A. at least 10
B. at least 11
C. at least 12
D. at least 13

Answers

Answer 1

Answer: Given:
must correctly answer 80% of the questions
correctly answered questions = 26
incorrectly answered questions = 4
unanswered questions = 15

Total questions = 26 + 4 + 15 = 45

45 * 80% = 36 required correctly answered questions.

36 - 26 = 10

Out of 15 remaining questions, 10 questions must be correctly answered for Heidi to advance to the next level.

Related Questions

Which of these points lies on the line described by the equation below?y - 4 = -2(x - 6)A. (-6, -4) B. (-4,-6) C. (6,4) D. (4,6)
Please help me. Very confused. due tomorrow!!
837 plus equals 2000 in math
To find the product 3/7 x 4/9, Cameron found the GCF of 3 and 9. He then multiplied the fractions 1/7 and 4/9 to find the product 4/63. What was Cameron's error?
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If f (x) = 3 x squared and g (x) = 4 x cubed + 1, what is the degree of (f circle g) (x)?If f (x) = 3 x squared and g (x) = 4 x cubed + 1, what is the degree of (f circle g) (x)?options are
2
3
5
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Answers

Answer:

degree = 6

Step-by-step explanation:

Given $f(x)=3x^2$ , and $g(x)=4^3+1$ , we can find the composition of functions: $fog(x)$ by applying the definition of composition and performing the needed algebra.

Recall that the composition of functions is defined as: $fog(x)=f(g(x))$ , where we use as input for the function f(x) the actual expression in terms of "x" of the function g(x):

$f(g(x))=f(4x^3+1)\nf(g(x))=3(4x^3+1)^2\nf(g(x))=3\,(4x^3+1)\,(4x^3+1)\nf(g(x))=3\,[16x^6+4x^3+4x^3+1]\nf(g(x))=3\,[16x^6+8x^3+1]\nf(g(x))=48x^6+24x^3+3$

Therefore, the degree of this expression is "6" (the highest power at which the variable "x" appears)

Answer:

the answer is 6

Step-by-step explanation:

don't have one

Simplify using exponent rules:3^3×3^4/3^10

Answers

$\bf ~\hspace{7em}\textit{negative exponents} \n\n a^(-n) \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^(-n)} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^(-m)\implies a^(n-m) \n\n[-0.35em] \rule{34em}{0.25pt}\n\n \cfrac{3^3 \cdot 3^4}{3^(10)}\implies \cfrac{3^3 \cdot 3^4\cdot 3^(-10)}{1}\implies 3^(3+4-10)\implies 3^(-3)\implies \cfrac{1}{3^3}\implies \cfrac{1}{27}$

Mary sell lemonade and she donates $0.10 from every cup she sells to charity the cup of lemonade she sells to charity. the cups of lemonade sell for $0.45 one day she made 17.10 how much money did she give to charity that day?PLEASE HELP ME NOW??

Answers

$3.8 hope this helps :)

What is greater than 40 but less than 20

Answers

I've already been complemented twice on my previous answer, but then I discovered that I mis-read the question. My entire original answer was wrong, and I have to delete it.

I don't believe that any number can satisfy both of those conditions.
I'll say the question has no answer.

Pam typed 2.5 pages in 15 minutes. At that rate, how many minutes will it take her to type 23 pages?

Answers

In the given question, it is already mentioned that Pam takes 15 minutes to type 2.5 pages. this information should be used as the main information for reaching the desired answer.
Pam typed 2.5 pages in = 15 minutes
Then time taken by Pam to type 23 pages = (15/2.5) * 23
   = 345/2.5
   = 3450/25
      = 138
So Pam will take 138 minutes to type 23 pages

Well, first of all, you have to compare;
15 minutes=2.5 pages
x=23 pages
Then you cross multiply. By the way, i replaced the unknown with x. Anyway, x multiplies 2.5 and 23 multiplies 15. So that will be;
2.5x=345
Then you divide both sides by 2.5. This is done to remove all that is attached to x to find x
2.5x/2.5 = 345/2.5
Therefore, 345 divided by 2.5 is 138. So;
x=138
It will take 138 minutes to type 23 pages. HOPE I HELPED.

Karolyn is arranging her art project, science project, and math project on her desk. The tree diagram below shows the sample space. Based on the tree diagram, what is the probability that the science project is first?

Answers

the probability of the sequence is 1/3

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