1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fofino [41]
2 years ago
8

1)An exam worth 172 points contains 30 questions. Some questions are worth 2 points, and the others are worth 9 points. How many

2 point and 9 point questions are on the test?
2) Tickets to the fair cost $6 for children and $13 for adults. On Saturday 163 people
enter the fair and they collected $1566. What number of children and what number
of adults attended?

3) Tickets at a particular movie theater have different rates for adults and children.
On Saturday the theater sold 8 adult tickets and 7 child tickets for $132. The next
day, the theater sold 4 adult tickets and 5 children tickets for $72. What is the price
for the adult ticket and the price for the child ticket?
Mathematics
1 answer:
lisabon 2012 [21]2 years ago
3 0
1) x+y=302x+9y=172x=-y+30-2y+60+9y=1727y=112y=16x=14
14 2-point questions and 16 9-point questions
2) c+a=163
6c+13a=1566
c=-a+163
-6a+976+13a=1566
7a=588
a=84
c=79
84 adult tickets and 79 children tickets
3) a+c=15; ax+cy=132
8+7=15; 8x+7y=132

a+c=9; ax+cy=72
4+5=9; 4x+5y=72

8x+7y=132
4x+5y=72
(8x+10y)=(144)

8x=-7y+132
8x=-10y+144
-7y+132=-10y+144
3y=12
y=4
4x+20=72
4x=52
x=13
The price for an adult ticket is $13 and the price for a child ticket is $4
You might be interested in
The diagram represents an enlargement of a rectangle by a scale factor of 4.
Tpy6a [65]

Answer:

D. 16 inches by 8 inches

Step-by-step explanation:

We have been given an image of two rectangles and we are asked to find the dimensions of the enlarged rectangle.

Since we have been given that the original rectangle is enlarged b a scale factor of 4, so to find the dimensions of enlarged rectangle we will multiply the dimensions of original rectangle by 4.

\text{Length of enlarged rectangle}=4\times 4\text{ inch}

\text{Length of enlarged rectangle}=16\text{ inch}

\text{Width of enlarged rectangle}=4\times 2\text{ inch}

\text{Width of enlarged rectangle}=8\text{ inch}

Therefore, the dimensions of enlarged rectangle are 16 inches by 8 inches and option D is the correct choice.

6 0
2 years ago
Read 2 more answers
Determine the next step for solving the quadratic equation by completing the square
GaryK [48]

Answer:

  • The two solutions are:           x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}

  • The next and every step are below.

Explanation:

1. -3=-2x^2+2x    : Given (addition property / add - 3 to both sides)

2. -3 = - 2(x^2-x)    : Given (commom factor - 2)

3. -3-1/2=-2(x^2-x+1/4)

    To obtain the perfect square it was added the square of half of the coefficient of x: (1/2)² = 1/4, inside the parenthesis.

Since, the terms inside the parentthesis are multiplied by - 2, you have to add - 2 (1/4) = - 1/2 to the left side of the equation.

4. Now, you have that the trinomial x² - x + 1/4 is a square perfect trinomial which is factored as (x - 1/2)² and get the expression:

-7/2=-2(x-1/2)^2

5. Divide both sides by - 2 to get the next expression:

-7/4=(x-1/2)^2

6. The last step is to extract squere root from both sides of the equality:

(x-1/2)=+/-\sqrt{\frac{7}{4}}\\ \\ x-1/2=+/-\frac{\sqrt{7} }{2}\\ \\ x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}

8 0
2 years ago
Which of the following statements about length of investment is correct? a. Bonds tend to be better long-term investments than s
Vladimir79 [104]
B) <span>Stocks tend to be better long-term investments than bonds because bonds do not have the same growth potential that stocks do.</span>
3 0
3 years ago
Read 2 more answers
Marie and her family are on a trip. So far, they have traveled 175 miles and are 25% of the way to their destination. How many t
kow [346]
To find the answer for this question you take 175 multiply it by 4 which gives you 700 which is the answer
7 0
3 years ago
Maggie is rock climbing. After reaching the summit, she descends at a rate of 7 feet each minute. If she continues at this rate,
Slav-nsk [51]

Answer:

she will have gone down 56 feet

8 0
3 years ago
Other questions:
  • Need your help ASAP please help
    7·1 answer
  • X <br> 2<br> +(y−7.5) <br> 2<br> = <br> 49<br> 9<br> ​ What is the radius?
    10·2 answers
  • Solve the equation Square root X+4-3=1 for the variable. show each step of the solution process
    7·1 answer
  • You have 17 coins and i have 16 coins, we flip all coins at the same time. if you have more heads then you win, if we have the s
    8·2 answers
  • Target sells 24 bottles of water for $3 and thirty six bottles of water for $4 which is a better buy
    15·2 answers
  • Answer true or false. If​ false, explain briefly. ​a) Some of the residuals from a least squares linear model will be positive a
    10·1 answer
  • How do you write a quadratic equation in standard form?
    14·1 answer
  • In applications, we consider any event that has below 5% chance. Pick a card from a standard deck of 52 cards. A=The card is an
    8·1 answer
  • Help with this please
    11·1 answer
  • (Algebra 2) help me please:( no links I will report please help me out )!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!