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
Blababa [14]
3 years ago
13

Help with number 13 please if someone can please

Mathematics
1 answer:
guapka [62]3 years ago
6 0

Answer: X=2   Y=-6

Step-by-step explanation:

You might be interested in
Find the GCF of each pair of monominals 54gh,72g
wel
18 is the answer I believe hopefully this is correct
7 0
3 years ago
Which relation is a function?
choli [55]

Answer:

The first picture presented showing to rows of dots in a somewhat straight line.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Cindy plans to shop for her school supplies and wants to know how much money she would need to spend. from her friend she knows
vlabodo [156]

Let the cost of 1 notebook be x and the cost of 1 binder be y.

4 notebooks and 3 binders would cost 23.5

Therefore, 4x + 3y = 23.5     (1)

7 notebooks and 6 binders would cost 44.5

Therefore, 7x + 6y = 44.5     (2)

Multiply the first equation by 2.

8x + 6y = 47     (3)

(3) - (2) gives

x = 2.5

Substitute the value of x in (1), we get,

4(2.5) + 3y = 23.5

10 + 3y = 23.5

3y = 23.5 - 10

3y = 13.5

y = 13.5/3

y = 4.5

Hence, cost of 5 notebooks and 3 binders is:

5x + 3y = 5(2.5) + 3(4.5)

           = 12.5 + 13.5

           = 26

Hence, cost of 5 notebooks and 3 binders is $26.

4 0
3 years ago
Can someone explain to me what a “derivative” means? How do you find the derivative of f(x)=x^3+1?
Ostrovityanka [42]
The derivative is the rate of change of a function, basically represents the slope at different points. To find the derivative of the given function you can use the power rule, which means, if n is a real number, d/dx(x^n)= nx^(n-1). This is a simplification of the chain rule based on the fact that d/dx(x)=1. Anyway, this means that d/dx(x^3 + 1)= 3x^2. Here n is 3 and so it is 3*x^(3-1)= 3x^2. The derivative of x^3+1 is 3x^2.

If you are wondering what happened to the 1, for any constant C, d/dx(C)=0.
4 0
3 years ago
Help idk how to do this ASAP please
Sergio039 [100]

Answer:

The area of ∆DEF = 4.5in²

Step-by-step explanation:

From the above diagram,

∆BAC ~∆DEF

It is important to note that if two triangles are similar, the ratio of their areas is equal or equivalent to the ratio of the areas of their sides

This means for the above question, that

We have the bigger triangle = ∆BAC has a side of 4 in and Area = 8 in²

The small triangle has a side of 3in

Finding the scale factor k = ratio of the sides of both Triangles

k = 4/3

k² = (4/3)²

k² = 16/9

Hence,

Area of ∆BAC/ Area of ∆DEF = 16/9

8in²/Area of ∆DEF = 16/9

We cross Multiply

8 in² × 9 = Area of ∆DEF × 16

Divide both sides by 16

Area of ∆DEF = 72/16

= 4.5in²

Therefore, the Area of ∆DEF rounded to the nearest tenth = 4.5in²

8 0
3 years ago
Other questions:
  • 150% of A is equal to $120
    8·2 answers
  • What is the solution to the equation? 3(x - 4) < 6
    13·2 answers
  • You flip a coin and roll the 20-sided figure. Find the probability of flipping tails and rolling at least a 14. The probability
    14·1 answer
  • Simplify. Leave answer in scientific notation.<br> (16 x 10⁸) (8 x 10³)​
    12·1 answer
  • What is 3/4 plus 1/3 equals?
    5·1 answer
  • What is 2x + 3y = 13<br> x = 2 + 3y
    12·2 answers
  • Grace scored n points in her first basketball game of the season. She scored 8 more points in her second game than in her first,
    14·1 answer
  • Which is not proportional to 3/7?<br> 6/14<br> 12/28<br> 0.3/0.7<br> 9/28
    7·1 answer
  • Consider the sets below.
    6·2 answers
  • Quick!!<br><br> -2/9 (-5/3) = ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!