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
Pani-rosa [81]
3 years ago
5

20 points!! Pls help

Mathematics
2 answers:
Studentka2010 [4]3 years ago
5 0

Answer:

<h3>(-4, 1)</h3>

Step-by-step explanation:

-x-3=y, therefore x = -y-3

-3x - 8y = 4

Find the value of y

Substitute the x in -3x - 8y = 4 with -y-3

We get

-3·(-y-3) - 8y = 4

3y + 9 - 8y = 4

-5y = 4-9

-5y = -5

<h3>y = 1</h3>

_______________

Find the value of x

x = -y-3

x = -1-3

<h3>x = -4</h3>

_______________

Answer (x, y) =

<h3>(-4, 1)</h3>

_____________________

#IndonesianPride - kexcvi

lord [1]3 years ago
5 0

Answer:

Ok Here:

Step-by-step explanation:

STEP BY STEP

Substitution:

-x-3=y

-3x-8y=4

Solve for X                Substitute for Y

-3x-8(-x-3)=4                     -(-4)-3=y

-3x+8x+24=4                        4-3=y

5x+24=4                                y=1

    -24

5x=-20

5/5 = -20/5

x=-4

Solution: (-4,1)

You might be interested in
-(4y + 20) + 19 = -y + 17
STatiana [176]
43 I think the answer is 43
5 0
3 years ago
Read 2 more answers
Why aren't the numbers 38 and 40 relatively prime​
sergey [27]

Answer:

may be this is helpful!

5 0
2 years ago
Read 2 more answers
A store advertises 15% off an item that regularly sells for $300.
nataly862011 [7]

Answer:

The sale price of the item is  $ 255

Step-by-step explanation:

To determine the amount of discount ( d ) offered by the store, we calculate  

15 %  of the sale price. Thus:

d =  300  ×  15 ÷ 100

d  =  3 00  ×  15  ÷ 1 00  (take the 2 zeros out on both the hundred and 3 hundred)

d  =  3  ×  15

d  =  45

If the amount of discount is known, the sale price ( s ) of the item will be the regular price minus the discount. Hence:

s  =  300  −  45

s  =  255

Hope this helps you! If not sorry!

8 0
2 years ago
In triangle ABC, AC =24, the measure of angle A = 30 degree , and the measure of angle B = 45 degree . Find the area of this tri
andriy [413]

Answer:

142.932

Step-by-step explanation:

given that in triangle ABC, AC =24

Angle A = 30 and Angle B =45

If we draw altitude from C, we get

h = 24sin 30 = 12

Since BC = h (45, 45,90 triangle)

BC=12

By sine formula for triangle

\frac{12}{sin30} =\frac{AB}{sin(180-45-30)} \\AB = 24 sin 105 = 23.1822

Area of triangle

= 1/2 (23.1822)(12)\\= 142.932

6 0
3 years ago
Round the fraction or mixed number to the nearest 1/2 ( each one)
MAXImum [283]
1, 4, 100 1/2, 4 1/2, 5
3 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone please help me with 4(7q+3)
    10·2 answers
  • A chef makes 1 1/2 gallons of soup in a large pot. How many 1 -cup serving can the chef get from this large pot of soup
    15·1 answer
  • Explain how to use a graph of the function f(x) to find f(3)​
    9·2 answers
  • Calculate the circumference of the inscribed circle. [Use π = 3]
    8·2 answers
  • Which expression is equivalent to -14-6
    10·1 answer
  • Jill has 64 ounces of lemonade. Each day, her brother drinks 16 ounces. Then at the end of each day Jill adds 25% of the remaini
    15·2 answers
  • ( I WILL BE GIVING EXTRA POINTS AND BRAINLIEST TO WHO EVER HELPS ME!! :D)
    12·2 answers
  • What is 73.83 divided by 3? <br><br> Tell me step by step how to do it!
    9·2 answers
  • Take these points. 25 of them. Will Thanks give brainiest and 5 star
    15·2 answers
  • How are the entries of the matrix named by position?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!