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
Helga [31]
3 years ago
8

The sum of two numbers is 13. two times the first number minus three times the second number is 1. if you let x stand for the fi

rst number and y for the second number, what are the two numbers?
a. x = ���8, y = ���5
b. x = 5, y = 8
c. x = 8, y = 5
d. x = ���5, y = ���8
Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0
X + y = 13......x = 13 - y
2x - 3y = 1

2(13 - y) - 3y = 1
26 - 2y - 3y = 1
-2y - 3y = 1 - 26
-5y = -25
y = -25/-5
y = 5

x + y = 13
x + 5 = 13
x = 13 - 5
x = 8

so, x = 8 and y = 5
You might be interested in
PLEASE HELP! 20 POINTS!!
Ann [662]

Answer:

15

Step-by-step explanation:

In this problem we need to use the numbers given. So in the problem it states that k = 20 and v = 10. We can replace the letters in the equation for the numbers that it equals so the equation can make sense so 25 - 20 + 10 because k is 20 and v is 10 I simply just replaced the letters with the numbers given in the problem. Then we can just subtract 25 - 20 which is 5 and add 10 which leaves you at a final answer of 15. Hope this helped!

3 0
3 years ago
I will give you 5 stars and a heart!
Artemon [7]
So from these given details will be right choice A. sure because given that 1 unit cube = 1 inch so from this result that 48 unit cubes = 48 cubic inches 

hope this will help you 
7 0
3 years ago
a week before election day, 276 out of 450 people said they would vote for the republican candidate. if 15,240 registered voters
Ann [662]

Answer:

(a) \frac {276}{450}=\frac {y}{15240}

(b) We cross multiply the probability by the total voters

(c) 9347

Step-by-step explanation:

(a)

Probability of getting a republican voter is

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}=\frac {y}{15240}

These are found by dividing the first numerator and denominator by 2, then by 3

To make it complete, the situation is therefore defined as \frac {276}{450}=\frac {y}{15240} where y is unknown value

(b)

Cross multiplication of the probability and number of voters gives the actual figure of y in the equation formed in part a of the question.

(c)

Since we have 15240 voters who plan to participate in election, we cross multiply to get the approximate number of republican voters which yields

\frac {46}{75}\times 15240=9347.2\approx 9347

5 0
3 years ago
A survey was conducted with a large group of teenagers from 6 different states and it asked them for their favourite sport out o
UkoKoshka [18]

Answer:

H0: There is no association between state and sporting preference.

H1: There is an association between state and sporting preference

Step-by-step explanation:

The hypothesis to be tested for is whether the factor 'state' is associated with the factor 'sporting preference'.

The study is therefore about 'association' and whether the distributions of sporting preferences are identical across states. In scenario in this case is the test for association which is the most appropriate test.

Two factors are deemed to not be associated unless there is supporting evidence to suggest otherwise. Since the null hypothesis is the default belief, the correct pair of hypotheses are:

H0: There is no association between state and sporting preference.

H1: There is an association between state and sporting preference

3 0
2 years ago
Helppppp ASAP thankkssss
Tcecarenko [31]
The answer is 8 DVDs per stack
7 0
3 years ago
Other questions:
  • Megan ate 3/4 of a cookie. wrote and equivalent fraction for the amount of cookie Megan didn't eat
    8·2 answers
  • In abc the coordinates of the vertices are a(-2,4) b(-1,1) and c(2,2) ABC is a right triangle?
    6·1 answer
  • Can u help me on this one?
    6·1 answer
  • How turn y more 4 is -36 into math symbols
    9·1 answer
  • A city planner would like to estimate the true mean annual income of all households in the city. She selects a random sample of
    13·1 answer
  • What is <2 if <4 is 35
    12·1 answer
  • Suppose an employee made $50,000 in 2015 and received a 2% raise at the end of the year. What will he or she make in 2016?
    7·2 answers
  • Solve the inequality x^2-4x-7<0
    6·1 answer
  • Can you find the answer!​
    13·2 answers
  • Determine the perimeter of a triangle with sides that measure 16.2 inches, 10.04 inches and 12.2 inches.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!