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
marishachu [46]
3 years ago
9

Travis visits different states every summer. This summer, he started with 4 states already visited 7 state per day. Write an equ

ation to model this situation (use d for days and s for states)
Mathematics
1 answer:
astra-53 [7]3 years ago
6 0

Answer: s = 4 + 7d

Step-by-step explanation:

You might be interested in
ANSWER FOR BRAINLIEST
dezoksy [38]

Answer:A

Step-by-step explanation: A is 8d+d, and since d=1, 8d,+1d is equal to 9d

7 0
2 years ago
Read 2 more answers
What is the focus of the parabola? <img src="https://tex.z-dn.net/?f=y%3D%20%5Cfrac%7B1%7D%7B4%7D%20x%5E%7B2%7D%20-x%2B3" id="Te
OlgaM077 [116]
We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=1/4x²−x+3
where
a=1/4
b=-1
c=3
 the coordinates of the focus are
(-b/2a,(1-D)/4a)
where D is the discriminant b²-4ac
D=(-1)²-4*(1/4)*3-----> D=1-3---> D=-2
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> 2

y coordinate of the focus
(1-D)/4a------> (1+2)/(4/4)---> 3

the coordinates of the focus are (2,3)
3 0
2 years ago
Read 2 more answers
The results of a common standardized test used in psychology research is designed so that the population mean is 145 and the sta
anygoal [31]

The value 155 is zero standard deviations from the mean, because x = μ , and therefore z = 0.

<h3>What is Standard Deviation?</h3>

The standard deviation is a measure of the amount of variation or dispersion of a set of values.

The key concept we need to manage here is the z-scores , and we can obtain a z-score using the next formula:

z = (x - μ)/σ      ..............[1]

Where

z is the z-score.

x is the raw score: an observation from the normally distributed data that we want standardize using [1].

μ is the population mean.

σ is the population standard deviation.

These standardized values have always the same probability in the standard normal distribution, and this is the advantage of using it for calculating probabilities for normally distributed data.

A subject earns a score of 155.

From the question, we know that:

x = 155.

μ = 155

σ = 50

Having into account all the previous information, we can say that the raw score, x = 155, is zero standard deviations units from the mean. The subject earned a score that equals the population mean. Then, using [1]:

z = (x - μ)/σ

z = (155 - 155) / 50

z = 0/50

z = 0

As we say before, the z-score "tells us" the distance from the population mean, and in this case this value equals zero:  

x = μ

Therefore, z = 0

So, the value 155 is zero standard deviations from the [population] mean.

Learn more about Standard Deviation from:

brainly.com/question/13905583

#SPJ1

8 0
2 years ago
The student council is planning the school carnival. Each
Assoli18 [71]

Answer: y = 2.50x

Step-by-step explanation:

X represents the number of tickets sold, and because each ticket costs $2.50, the expression would be 2.50x to find how much money is raised, which can be represented as y.

5 0
3 years ago
Write an equivalent expression to present patricia total earnings this week 7h + 135 + 5h = ?h + ?​
Paul [167]

Answer: 12 h + 135

Step-by-step explanation: 7h +135 + 5h = ?h + ?​

                                             7h +5h +135  

                                            =12h +135

So u combine like terms together  which are 7h and 5h which gives you 12 h.And then you have 135 left,so you add 12h to 135.

Ps.If you don't know what like terms are.I will explain down below.

Like terms are  variable that are the same.For an example 4y and 3y are like terms .Another example is 1/3 xy and 6xy .

Hope this helps :) and if it does please give brainliest .

8 0
2 years ago
Other questions:
  • $0.\overline{5} + 0.19\overline{4}$.
    14·1 answer
  • The product of the sum of a and b and their difference.
    5·1 answer
  • After the 15% sales tax the jeans were $11.50. How much was the jeans before the sales price?
    14·1 answer
  • What are the coordinates of the image of the point (1-, 2) under a dilation of 3 with the origin
    12·1 answer
  • Can someone please help me. Will mark brainlist!
    12·1 answer
  • Combine the radicals 9 x-3 x<br> 6<br> 6 x<br> -6 2x<br> -6
    15·2 answers
  • Please help I will give brainliest, and everything else!!!!! Use the distributive property to find the value. (5y + 2 )8
    14·2 answers
  • Simplify 5a – (2a + 6)
    11·2 answers
  • Dividing by 1/100
    15·1 answer
  • Identify like terms.<br> (a) 3x, 4y, -2x<br> help
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!