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
liq [111]
3 years ago
13

Y = 5x - 13 4x + 3y = 18

Mathematics
1 answer:
hram777 [196]3 years ago
3 0
<span>replace Y = 5x - 13
into
4x + 3y = 18

</span>

4x + 3 (5x - 13) = 18
4x + 15 - 39 = 18
4x -24 = 18
4x = 18 +24
4x = 42
x = 42/4
x = 10.5

Y = 5(10.5) - 13
=  52.5 - 13
= 39.5

answer: x = 10.5 and y = 39.5
You might be interested in
Can someone help me with this question please !
RoseWind [281]

Answer:

a) A triangle which the angles ratio is 1 : 2 : 3 is a 30º - 60º - 90º right triangle.

b) The shortest side is opposite to the shortest angle. So, we can calculate it using sin 30º.

$\text{sin}(30\º)=\frac{\text{Opposite side to x}}{19} $

$\frac{1}{2} =\frac{\text{Opposite side to x}}{19} $

$\text{Opposite side to x}= 9.5$

3 0
3 years ago
Read 2 more answers
I have a question that says " jada has read 3/5 of a book. She has read 75 pages so far. How many pages are in the whole book?"
jok3333 [9.3K]

Answer and Step-by-step explanation:

To solve, we would multiply by the reciprocal of the portion Jada has read, and multiply that number to 75.

The reciprocal means the the value, but flipped, so \frac{3}{5} will become \frac{5}{3}.

Now we do 75 times \frac{5}{3}/

\frac{75 * 5}{3} \\\\\\\\\frac{375}{3} \\\\\\\\125

So, there are 125 total pages in the book.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

3 0
3 years ago
Which expressions<br> are equivalent to 90¹⁶
tangare [24]

Answer:

-30(3+2w)

 (-9-6w) ⋅ 10

 −20(4.5 + 3w)

Step-by-step explanation:

4 0
3 years ago
I’m pretty confused on this question. Anyone know the answers?
Afina-wow [57]

Answer:

see explanation

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

• If m > 0, then the line slopes upwards from left to right ( increases )

• If m < 0, then the line slopes downwards from left to right ( decreases )

(a)

y + x = 3 ( subtract x from both sides )

y = - x + 3 ← in slope-intercept form

with m = - 1 ⇒ decreasing from left to right

(c)

y = 4x + 8 ← is in slope-intercept form

with m = 4 ⇒ increasing from left to right

the equation of a line in the form x = c represents a vertical line, where c is the value of the x-coordinates the line passes through

(b)

x - 5 = 0 ( add 5 to both sides )

x = 5 ← is a vertical line

the equation of a line in the form y = c represents a horizontal line, where c is the value of the y-coordinates the line passes through

(d)

\frac{y}{4} = - 6 ( multiply both sides by 4 )

y = - 24 ← is a horizontal line


3 0
3 years ago
|r|=-2 solve the equation and graph the solution if possible
S_A_V [24]
That bracket symbol, with an r in it, means "the absolute value of r". 
So r's absolute value is -2 meaning r is two units from zero
r= 2
6 0
3 years ago
Other questions:
  • Find the 8th term in the geometric sequence below. 65,536, 24,576, 9,216, 3,456, 1,296, …
    7·1 answer
  • jim weighs more than joe but less than jack. Their weights in kilograms are consecutive by multiples of 7. If they each weighed
    9·1 answer
  • Solve for a.<br><br> 2(a+4)+6a=48
    6·2 answers
  • Rewrite the quadratic y=3(x-2)^2-7 in standard form​
    11·1 answer
  • What is two plus two equal
    11·2 answers
  • Find all solutions by transforming the system to reduced echelon form and back substituting. (If there are an infinite number of
    5·1 answer
  • A lab technician needs 60mL of 25% acid solution for a certain experiment , but he has only 10% solution and 40% solution. How m
    8·1 answer
  • A spinner has 3 equal sections labeled X, Y, and Z. Jinghua spins this spinner twice. Which represents all the possible outcomes
    7·1 answer
  • 25 The library has an empty bookcase with 4 shelves. Each shelf can hold 23 chapter þooks. If the library has 117 new chapter bo
    15·2 answers
  • The length of a rectangular house is two and a half times its width. Solve the problem using x to denote the shorter side of the
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!