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
storchak [24]
3 years ago
15

Find the value of this expression if x = -1 and y = 9. x²y -7

Mathematics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

-9/7

Step-by-step explanation:

Simplify and remove like terms.

You might be interested in
Kaylee has 4 1/2 yards of fabric. She wants to make an outfit that requires 6 1/3 yards of fabric. How much more fabric will she
Artyom0805 [142]

Answer:

1 5/6

Step-by-step explanation:

6 1/3-4 1/2= 19/3-9/2= 38/6-27/6= 11/6= 1 5/6

Ans: She will need 1 5/6 more fabric.

6 0
3 years ago
Help asappp!!! correct answer pleas :)​
Grace [21]
Answer: y = 3x + 4

Explanation: The slope is positive 3x and the y-intercept is +4 therefore the equation is y = 3x + 4 in y = mx + b form.

(mx is for slope, b is for y-intercept)

Hope this helps :)
7 0
3 years ago
Generic sugar which costs $2.23/kg is made by combining brand X sugar which costs $1.18/kg with brand Y sugar which costs $3.98/
White raven [17]

Answer:

X = 14 kg

Y= 7 kg

Step-by-step explanation:

LET  X and Y equal the amounts of brand X and Y

X = kg of brand X

Y = kg of brand Y

we know:

1)   X    +    Y   =   21    (kg)

2)   1X  +   4Y  =   2(X + Y)        (This is the cost/kg * amounts for total cost)  

Coefficients 1,4,2  are the cost/kg)

substitute eq. 1 (X+Y), = 21 into right side of equation 2

1X + 4Y = (21)*2

use elimination to solve 2 equations

X   +   Y = 21

X   + 4Y = 42        (now subtract,       note:  I wrote the 1X as just X)

------------------

0     -3Y  = -21       OR   Y = 7 kg   so X = (21-7) OR   X = 14 kg

5 0
3 years ago
Need the correct answer for 16 plz
cluponka [151]
1/50 of a mile is the distance the snail goes in 50 minutes. To get an hour, the snail must move for another 10 minutes (60-50=10). 

Dividing 1/50 mile by 5 gives us 0.2/50 mile, which would be what the snail travels in 10 mins. 

This can be added to 1/50 to give 1.2/50 mile as the answer

OR

You can take 0.2 and times it by 6 (to get 60 minutes from 10 minutes) to give the same answer as above. 

Either way, the snail has gone 1.2 miles after the hour has passed. 


5 0
3 years ago
I need help with this math problem
nikklg [1K]

Answer:section 1 you choose c)rhombus

And the last one is X

Step-by-step explanation:sorry i can't explain but we literally got the same thing to do and i passed but what i tell you is correct

3 0
3 years ago
Other questions:
  • A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th
    5·1 answer
  • You are designing a diamond-shaped kite. you know that AD = 44.8 cm, DC = 72 cm, and AC = 84.8 cm. You want to use a straight cr
    5·2 answers
  • What is the length of segment AD.
    5·1 answer
  • Maths Watch
    12·1 answer
  • What is the term?
    14·2 answers
  • 5x+3y=28<br> 3x+y=12<br><br> please solve algebraically
    9·1 answer
  • Please help me estimate the answer of 7987 divided by 39
    15·1 answer
  • Find the area of each sector. Omg please help due in 5 min!!
    15·1 answer
  • 3 \frac{1}{4}[/tex] = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D" id="TexFormula1" title="\frac{1}{2}" alt="\frac{1
    12·1 answer
  • Point P is graphed at (4, 5) shown
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!