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
alexgriva [62]
3 years ago
10

Trinity's science instructor entered the 7th students in a STEM competition. There was an enrollment fee of $50 and an additiona

l fee of $12 for each packet of 10 tests. The total cost was $170. How many tests were purchased?
Which of the following equations best models the situation?
Question 1 options:

12x + 50 = 170


50x + 12 = 170


12x - 50 = 170


50x - 12 = 170
Mathematics
1 answer:
lina2011 [118]3 years ago
3 0
12x +50 = 170
-50 -50
12x=120
/12 /12
x=10

Ten packets were purchased
You might be interested in
Which of the following equations describes a relationship of inverse variation between input and out put ?
labwork [276]

Answer:

option A

output  = constant / input

Step-by-step explanation:

Inverse relationship between two input and output means that they both moves in opposite directions, if one increases than other decreases.

Equation to describe relationship of inverse variation between input and output will be as following

<h3>  output ∝ 1 / input</h3>

 to remove this sign of proportionality

<h3>  output  = k / input </h3>

 where k is a constant

4 0
3 years ago
PQ⊥PS , m∠QPR=7x−9, m∠RPS=4x+22<br> Find : m∠QPR
emmainna [20.7K]

Given:

It is given that,

PQ ⊥ PS and

∠QPR = 7x-9

∠RPS = 4x+22

To find the value of ∠QPR.

Formula

As per the given problem PR lies between PQ and PS,

So,

∠QPR+∠RPS = 90°

Now,

Putting the values of ∠RPS and ∠QPR we get,

7x-9+4x+22 = 90

or, 11x = 90-22+9

or, 11x = 77

or, x = \frac{77}{11}

or, x = 7

Substituting the value of x = 7 in ∠QPR we get,

∠QPR = 7(7)-9

or, ∠QPR = 40^\circ

Hence,

The value of ∠QPR is 40°.

3 0
3 years ago
Is 9 odd or even or is 8 an odd number
zzz [600]

Answer:

9 is an odd number and 8 is an even number.

7 0
3 years ago
Read 2 more answers
According to the bar graph, what is the unit of measurement for the experiment?
sergiy2304 [10]

Answer: d or b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Siri am I a mix of recipe that calls for 1 1/2 cups of flour and 3/4 to get butter Jeremiah uses three sticks of butter how many
Inga [223]

Answer:

6 cups

Step-by-step explanation:

jeremiah 4× the recipe

3/4×4=3

so 1 1/2×4=6

8 0
3 years ago
Other questions:
  • Plzz help me with this one i dont know what to do on this one<br><br> 5x- 3(x-2)
    9·1 answer
  • If I have 40 pieces of candy and I sell them all for $20 how much would each piece of candy be worth
    6·1 answer
  • Let X represent the time it takes from when someone enters the line for a roller coaster until they exit on the other side. Cons
    8·1 answer
  • I NEED HELP PLEASE HURRY
    8·2 answers
  • Find the solution to the system of equations. <br> y= -5x+6<br><br> y=3x-2<br><br> x=<br> y=
    10·2 answers
  • Fill in the blanks concerning the following quadratic function: f(x)=−x2−4x+5
    5·1 answer
  • What is the answer? becuase i am just confused
    10·1 answer
  • 3/8b+3/4kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
    7·2 answers
  • Kevin can jog 3,000 feet in 6 minutes. If he jogs at the same rate, how many feet can she jog in 9 minutes?
    6·1 answer
  • Solve it ......<br> <img src="https://tex.z-dn.net/?f=3x%2B4%3D28" id="TexFormula1" title="3x+4=28" alt="3x+4=28" align="absmidd
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!