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
Oksanka [162]
3 years ago
11

Solve the system of equations using the substitution method.

Mathematics
1 answer:
Katena32 [7]3 years ago
3 0
        4x+5y=7
         y=3x+9

1)      4x+5(3x+9)=7                 2)        y=3(-2)+9
                                                             y= -6 +9 
         4x+15x+45=7                               y=3                                                     
         19x+45=7
          19x= -38
             x= -2
x is -2 and y is 3
You might be interested in
Help !!! Please !!!!!!
mylen [45]
I think that the answer is a hoped i helped
6 0
4 years ago
PLZ HELP ME I NEED HELP
NemiM [27]

Answer:

A,C and B

Step-by-step explanation:

4 0
3 years ago
Can you help me get the answer I’m just not sure if I’m right
zhenek [66]

Answer:

430in^{2}

Step-by-step explanation:

To find the area, use the area for a parallelogram formula:

A = bh, where A is the area, b is the length of the base, and c is the height of the parallelogram.

Next, substitute the values of the base and height:

A = 20in. * 21.5 in.

Finally, simplify the multiplication:

A = 430in^{2}

7 0
3 years ago
Suppose the probability of success in a binomial event is 0.15. what is the probability of failure
Verdich [7]

Answer:

Step-by-step explanation:

85

7 0
3 years ago
Find the area of a rhombus with side length 6 and an interior angle with measure $120^\circ$.
Serhud [2]

Answer:

The area of a rhombus is 18\sqrt{3} square units.

Step-by-step explanation:

Side length of rhombus = 6 units.

Interior angle of rhombus = 120°

another Interior angle of rhombus = 180°-120° = 60°.

Draw an altitude.

In a right angled triangle

\sin \theta=\frac{opposite}{hypotenuse}

\sin (60)=\frac{h}{6}

\frac{\sqrt{3}}{2}=\frac{h}{6}

Multiply both sides by 6.

3\sqrt{3}=h

The height of the rhombus is 3\sqrt{3}.

Area of a rhombus is

Area=base\times height

Area=6\times 3\sqrt{3}

Area=18\sqrt{3}

Therefore, the area of a rhombus is 18\sqrt{3} square units.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Thirteen out of twenty-one people surveyed prefer fresh fruit over canned fruit. What percent of people prefer fresh fruit?
    5·1 answer
  • Which ordered pairs are solutions to the inequality y−4x≤−6y−4x≤−6 ? select each correct answer. (3, 5)(3, 5) (−2, −14)(−2, −14)
    5·1 answer
  • What Is It Called to Move a Figure in Any Direction Without Rotation?
    9·1 answer
  • What is the sum of fifteen and ten?
    14·1 answer
  • -9 is less than w and w is less than or equal to -3
    15·1 answer
  • Equations for review solve each equation 1.) -8+n=7
    6·1 answer
  • Which expressions are equivalent to z0.2?
    10·1 answer
  • Help plzz I will mark brainliestttt
    9·1 answer
  • David's net worth is $45,765.78 and his assets have a value of $62,784.14. If his assets increase by $2,784.89 and his liabiliti
    13·1 answer
  • juan drove 126 miles in 3 hours. If he continued at the same rate, how long would it take to travel 336 miles? ​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!