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
seropon [69]
2 years ago
10

9x+y=43 4x+2y=16 using the substitution method

Mathematics
1 answer:
pickupchik [31]2 years ago
6 0
Isolate y for substitution, and we have y=43-9x.

Substitute y in the next equation, and we have
4x+2(43-9x)=16, which leads to
4x+86-18x=16,
-14x=-70
x=5

Plug x into an equation, now that we have found the value.
9(5)+y=43
45+y=43
y=-2

Now double check our answer:

9(5)+(-2)=?
45+(-2)=43

4(5)+2(-2)=?
20+(-4)=16

So, x=5 and y=-2.
You might be interested in
Help please<br><br>there us a picture <br><br>A. 2<br>B. 3<br>C. 8<br>D. 10​
AlladinOne [14]
It’s b/3 have an amazing day
8 0
2 years ago
Lines ℓ and m are intersected by transversal t. ℓ ∥ m. Lines l and m are horizontal with l above m and intersected by transveral
artcher [175]

Answer:

<5 = 105 degrees

Step-by-step explanation:

From the description given, since line l is parallel to m then <4 is alternate to <5 and two alternate angles are equal, if thst is the case

<4 = <5 (alternate angle)

Since <4 = 105 degrees, hence m<5 = 105 degrees

7 0
2 years ago
I need to find the product help
Licemer1 [7]
I'm assuming you mean

2\times\frac{17}{10}

Write the 2 as a fraction 2/1 and multiply.

\frac{2}{1}\times\frac{17}{10}=\frac{34}{10}=\frac{17}{5}


7 0
2 years ago
A group of 50 New York psychology students got a mean score of 530 on the psychology GRE with a standard deviation of 80. These
lesantik [10]

Answer: No, New York students are not truly more nerdy than the California students.

Step-by-step explanation:

Since we have given that

Number of students in a group = 50

Mean score of New York psychology = 530

Mean score of California psychology = 515

Standard deviation = 80

So, we will find t-distribution first.

t=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\t=\dfrac{530-515}{\dfrac{80}{\sqrt{50}}}\\\\t=1.32

Let α = 5% = 0.05

So, t_{\alpha,2}=2.920

Since t < t(critical value)

No, New York students are not truly more nerdy than the California students.

3 0
3 years ago
70 miles = ______ kilometers
vampirchik [111]
70 Miles = 112.65408 Kilometers
4 0
3 years ago
Read 2 more answers
Other questions:
  • Alex purchased a 6-hour calling card. He has used t minutes of access time. Write an algebraic expressions to represent how many
    13·2 answers
  • You flipped a coin 65 times, and it landed heads side up 37 times. What is the experimental probability of it landing tails side
    13·2 answers
  • Graph the system of linear inequalities.
    12·1 answer
  • Farrah's goal is to use 281 gallons of water or less per day at her business. Her water bill showed that 4,497 gallons were used
    9·1 answer
  • 8.4 miles plus 8.4 miles
    14·2 answers
  • Simplify the expression. -3x + 6 + -4x + 2
    11·1 answer
  • Find the value of each variable
    6·1 answer
  • Which number rounds to 700 when rounded to the nearest hundred?​
    14·1 answer
  • This dot plot is not symmetric, and the data set has two
    8·2 answers
  • What is two-thirds minus seven-twelfths
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!