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2 years ago

Scored an 85% on her last quiz. The quiz had 40 questions on it. How many

Mathematics

2 answers:

Bingel [31]2 years ago

6 0

Answer:

34 questions

Step-by-step explanation:

85% = 17/20

17/20 x 40 =

2 x 20 =

Hope that helps!

-Sabrina

Neko [114]2 years ago

5 0

Answer:

34/40

Step-by-step explanation:

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HELP!!!!!

podryga [215]

Solve for the x-max or h :\
$-b/(2a)=-8/(2*-2)=2=k$
plug it in to equation to get k:/
$y(2)=-2(2)^2+8(2)+3$
-8+16+3=11=k
$y=a(x-2)^2+11
$
solve for a by pluging (0,0)
then a= -11/4
$y=-11/4(x-2)^2+11$

8 0

3 years ago

15 players two coaches and 21 parents attend this year sports banquet the cost of each meal was $12 +5% sales tax what was the t

Artist 52 [7]

Answer:

$478.80

Step-by-step explanation:

We have been given that 15 players two coaches and 21 parents attend this year sports banquet the cost of each meal was $12 plus 5% sales tax.

First of all, we will find cost of each meal with tax as:

$\text{Cost of each meal with tax}=\$12+\$12\times \frac{5}{100}$

$\text{Cost of each meal with tax}=\$12+\$12\times 0.05$

$\text{Cost of each meal with tax}=\$12+\$0.6$

$\text{Cost of each meal with tax}=\$12.6$

Now, we will find total persons at the sport banquet as:

$\text{Total persons at banquet}=15+2+21$

$\text{Total persons at banquet}=38$

To find the total cost of food for the banquet, we will multiply cost of food for each person by 38.

$\text{Total cost of food for the banquet}=\$12.6\times 38$

$\text{Total cost of food for the banquet}=\$478.8$

Therefore, the total cost of food for the banquet is $478.80.

5 0

2 years ago

May I please get a step by Step for this

natulia [17]

Answer:

Step-by-step explanation:

h=16t^2+98=?

subtract 98 from both sides to get

h-98=16t^2

(the 98 on the right cancels)

now divide by 16 on both sides

h-98/16=t^2

(the 16 on the right cancels)

lastly take the square root on both sides

square root(h-98/16)= t

if you know what h is fill it in and it will give you your answer

Im not 100% sure!!

4 0

3 years ago

1. How do you determine the constant that you should add to an expression in the form x^2+bx so that it becomes a perfect square

Arada [10]

now heres a step by step explanation Step-by-step explanation: your welcome

5 0

3 years ago

16x squared -1=0 please help

Xelga [282]

16x^2 -1 = 0
16x^2 = 1
x^2 = 1/16
x= 1/4

4 0

2 years ago