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
REY [17]
2 years ago
5

-2x+9y=-41 -2x-5y=1 Process of elimination

Mathematics
1 answer:
MrMuchimi2 years ago
3 0

-2x+9y=41.... equation 1

-2x-5y=1 ....equation 2

________________

14y=43

y=43/14

y=43/14 in equation 1

-2x+9(43/14)=41

-2x+387/14=41

-2x=41-387/14

-2x=187/14

x=187/-28

x=187/28 , y=43/14

if you want to check your answer

-2(187/28)+9(43/14)=41

You might be interested in
How many inches is 10 1/2 feet?
dexar [7]
Your answer is 126 inches. You take 10.5 times 12 because there is 12 inches in a foot. 

3 0
3 years ago
Read 2 more answers
which method for comparing fractions were you unaware of before reading? use it to compare 2/3 and 3/4​
wolverine [178]

Good morning

______

Answer:

2/3 < 3/4​

___________________

Step-by-step explanation:

2/3 = (2*4)/(3*4)=8/12

3/4 = (3*3)/(4*3)=9/12

Since 9/12>8/12 then 3/4>2/3

:)

6 0
3 years ago
40% of Oatypop cereal boxes contain a prize. Hannah plans to keep buying cereal until she gets a prize. What is the probability
aleksley [76]

Answer:

(0.6)^{n}+n(0.4)(0.6)^{n-1}+\frac{n(n-1)(0.4)^{2}0.6^{n-2}}{2} +\frac{n(n-1)(n-2)0.4^{3}0.6^{n-3}}{6}

Step-by-step explanation:

We will use the binomial distribution. Let X be the random variable representing the no. of boxes Hannah buys before betting a prize.

Our success is winning the prize, p =40/100 = 0.4

Then failure q = 1-0.4  = 0.6

Hannah keeps buying cereal boxes until she gets a prize. Then n be no. times she buys the boxes.

P(X ≤ 3) = P(X=0) +P(X=1)+P(X=2)+P(X=3)

             = \binom{n}{0}p^{0}q^{n-0} +  \binom{n}{1}p^{1}q^{n-1}+ \binom{n}{2}p^{2}q^{n-2}+ \binom{n}{3}p^{3}q^{n-3}


             =  q^{n}+npq^{n-1}+\frac{n(n-1)(p)^{2}q^{n-2}}{2}+\frac{n(n-1)(n-2)p^{3}q^{n-3}}{6}

             = (0.6)^{n}+n(0.4)(0.6)^{n-1}+[tex]\frac{n(n-1)(0.4)^{2}0.6^{n-2}}{2} +\frac{n(n-1)(n-2)0.4^{3}0.6^{n-3}}{6}


7 0
3 years ago
Read 2 more answers
A motorboat travels 9 miles downstream (with the current) in 30 minutes. The return trip upstream (against the current) takes 90
Ksju [112]

Answer:

Option B

Step-by-step explanation:

When moving with the current, the speeds of the boat and current will add up. The first situation can then be represented by:

9 = 0.5(x + y)

While opposing the current, the speeds will be subtracted. Forming:

9 = 1.5(x - y)

The second option contains this equation system, so it is correct.

8 0
3 years ago
What number must you add to complete the square <br> x^2+x<br><br>A. 1/2<br>B. 2<br>C. 1/4<br>D. 1
Irina-Kira [14]

for ax^2+bx+c

when a=1, then the value of c that will make the quadratic a perfect square (allows you to complete the square) is (\frac{b}{2})^2


given x^2+x

b=1

so c=(\frac{1}{2})^2=\frac{1}{4}

answer is C

8 0
3 years ago
Other questions:
  • Alma bought a laptop computer at a store that gave a 20 percent discount off its original price. The total amount she paid to th
    7·1 answer
  • FIRST ANSWER GETS BRAINLIEST solve 4x-9y=11 for y
    12·1 answer
  • N + 20 = m<br><br> Can you help solve the equation for n please?
    9·2 answers
  • PLEASE ANSWER + BRAINLIEST!!
    8·1 answer
  • PLEASE help. Thank you !!
    6·1 answer
  • Equation parallel to 3x+2y=-10. (-9,-2)
    14·2 answers
  • Use the pythagorean theorem to solve the problem. Round your answer to the nearest tenth if necessary.
    12·1 answer
  • Write an equation of the line that has a slope of -5 and a y intercept of 4 in slope intercept form.
    5·1 answer
  • Can anyone help me with this plz
    13·1 answer
  • Factor completely 2n + 13n + 15
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!