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
nika2105 [10]
3 years ago
12

10x-9y=24 Y=x-2 X= Y=

Mathematics
2 answers:
ankoles [38]3 years ago
6 0

Answer:

Step-by-step explanation:

10x-9y=24....(1)

y=x-2...(2)

Substitute (2) into (1)

10x-9(x-2)=24

10x-9x+18=24

x+18=24

Substrate 18 from both sides

x=6

Substitute the value of x in (2)

y=6-2

y=4

When x=6,y=4

Korvikt [17]3 years ago
6 0
X equals 6 and Y equals four
You might be interested in
Shelby found a nice 2 bedroom apartment for rent for per month What should her monthly income be to afford this apartment?
Kryger [21]
Is it any answer choices?
8 0
3 years ago
A researcher at the University of Washington medical school believes that energy drink consumption may increase heart rate. Supp
Nana76 [90]

Answer:

Step-by-step explanation:

Given that:

mean μ = 70

sample size = 25

sample mean = 73

standard deviation = 7

level of significance = 0.10

The null hypothesis and the alternative hypothesis can be computed as follows:

\mathtt{H_o : \mu = 70} \\ \\  \mathtt{H_1 : \mu > 70 }

The z score for this statistics can be calculated by using the formula:

z = \dfrac{X- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{73- 70}{\dfrac{7}{\sqrt{25}}}

z = \dfrac{3}{\dfrac{7}{5}}

z = \dfrac{3 \times 5}{{7}{}}

z = 2.143

At level of significance of 0.10

degree of freedom = n -1

degree of freedom = 25 - 1

degree of freedom = 24

The p - value from the z score at   level of significance of 0.10 and degree of freedom of 24 is:

P - value = 1 - (Z < 2.143)

P - value =  1 - 0.9839

P - value =  0.0161

Decision Rule: since P value is lesser than the level of significance, we reject the null hypothesis.

Conclusion: We conclude that energy drink consumption increases heart rate.

5 0
3 years ago
An arc that subtends a full angle of 360 degrees is called a(n) ______.
DedPeter [7]
The arc is called B) Circle
6 0
3 years ago
Read 2 more answers
Study the following frequency distribution table.
m_a_m_a [10]

Answer:

Option C is correct.

f = 2

Step-by-step explanation:

The mean is the sum of variables divided by the number of variables

Mean = (Σfx)/(Σf)

xi | 15 | 17 | 20 | 30 | 10 + f

fi | 4 | 4 | 6 | 5 | 6

Σfx = (15×4) + (17×4) + (20×6) + (30×5) + [(10+f)×6] = 60 + 68 + 120 + 150 + 60 + 6f = (458 + 6f)

Σf = 4 + 4 + 6 + 5 + 6 = 25

Mean = 18.8

18.8 = (458+6f) ÷ 25

458 + 6f = 25 × 18.8 = 470

6f = 470 - 458 = 12

f = (12/6) = 2

Hope this Helps!!!

6 0
3 years ago
What is the mean absolute deviation of the data set? {12, 4, 30, 16, 18} 2. 8 5 2006. 4 16.
Harrizon [31]

Answer:

12 3 30 16 18 2 8 6 2006 4 16 12 4 12 13

4 0
2 years ago
Other questions:
  • The graph of the linear parent function is a ________________ line.
    7·1 answer
  • Solve this inequality: j/4 – 8 &lt; 4. A. j &lt; –48 B. j &lt; 48 C. j &gt; –12 D. j &lt; 12
    11·2 answers
  • Help ASAP PLZZZZZZ I really need the answer
    8·1 answer
  • Amelie is making a recipe that uses 134 cups flour. She is making 212 times the original recipe. Amelie draws this model to repr
    5·1 answer
  • 7 times a number is decreased by 8, the answer is the same as 3 times the number
    7·1 answer
  • PLEASE ANSWER EACH OF THESE QUESTIONS IM GIVING OUT BRAINLIEST !!!!! D:
    9·2 answers
  • Will bought a new skateboard that was on sale. The original price of the skateboard was $60. The store had marked it down by 20
    15·2 answers
  • Hannah is mixing paints to create a green color. Her mixture for green requires 2 parts blue, 1 part purple, and 4 parts yellow.
    12·1 answer
  • Help me please due in 6 minutes!
    8·1 answer
  • Claim: A majority of adults would erase all of their personal information online if they could. A software firm survey of 576 ra
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!