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
cluponka [151]
3 years ago
14

What two number multiplied equal 12 but also added together equal -7

Mathematics
1 answer:
FromTheMoon [43]3 years ago
7 0
A) x * y = 12
B) x + y = -7
A) x = 12 / y
Substitute this into B
B) 12/y + y = -7
multiplying both sides by "y"
12 + y^2 = -7y
y^2 + 7y + 12 = 0
y = -4
and from equation B we calculate x as -3



You might be interested in
Find the value of x in the picture below.
sveta [45]
The answer is c because
7 0
3 years ago
A data set has a mean of x = 71 and a standard deviation of 11.6. Find the z-score for each of the following.
olchik [2.2K]

Answer:

WHY MUST I CRYYYYY

Step-by-step explanation:

5 0
2 years ago
The average maximum monthly temperature in Campinas, Brazil is 29.9 degrees Celsius. The standard deviation in maximum monthly t
velikii [3]

Answer:

3.84% of months would have a maximum temperature of 34 degrees or higher

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 29.9, \sigma = 2.31

What percentage of months would have a maximum temperature of 34 degrees or higher?

This is 1 subtracted by the pvalue of Z when X = 34. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{34 - 29.9}{2.31}

Z = 1.77

Z = 1.77 has a pvalue of 0.9616

1 - 0.9616 = 0.0384

3.84% of months would have a maximum temperature of 34 degrees or higher

8 0
3 years ago
Please help!
Mandarinka [93]

Answer:0.11111111111

Step-by-step explanation:0.1 with a repeating decimal over the 1 because when you multiply 1/3 by 1/3 thats what you get.

8 0
3 years ago
Your savings account pays 1.75% interest per year. You make a $500 deposit. How much interest does the account earn in the first
GaryK [48]
1,75% = 0,0175

per month: 0,0175/12 = 0,00145833

500*0,00145833 = 0,73$ interest
8 0
3 years ago
Read 2 more answers
Other questions:
  • Whats the decimal and fraction for 10%
    8·1 answer
  • Patty lives on a chicken farm and can collect 80 eggs in 2 hours. At that rate how long will it take her to collect 360 eggs?
    8·2 answers
  • A jewelry maker needs 5 inch pieces of wire from sections that are each 4 feet in length. What is the greatest number of 5 inch
    5·1 answer
  • The sum of four consecutive intergers is 8 What are the intergers
    10·2 answers
  • Kimberly and Mike have an equal amount of money. After Kimberly spent $50 and Mike spent $25, Mike's money is 50% more than Kimb
    6·1 answer
  • Please Help ASAP!!!<br> Question in image below.
    9·1 answer
  • There are 20 students in a math class who have brown hair. This represents 80 percent of the students in the class. Which equati
    6·2 answers
  • Which is a zero of the quadratic function f(x) = 16x?? + 32x - 9?
    8·1 answer
  • Simplify ( 4 7 / 16 21 )/ 5 -8​
    15·1 answer
  • The bottom of a ladder must be placed 5 feet from a wall. The ladder is 18 feet long. How far above the ground does the ladder t
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!