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
ser-zykov [4K]
3 years ago
14

4x + 5y = 20

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0

Answer:

x-intercept: (5, 0)

y-intercept: (0,4)

Step-by-step explanation:

The x- and y-intercepts of a function are the points that the line crosses the x- and y-axes.

We know that when the line is crossing the x-axis, the y-value has to be 0.

So let's use this, and the equation, to help us find the x-intercept.

Plug in 0 for y; this will help us find the x.

4x + 5(0) = 20

4x + 0 = 20

4x = 20

x = 5

Now we know that the line crosses the x-axis at x = 5. The intercept is (5, 0) because we already knew that y = 0.

We also know that when the line is crossing the y-axis, the x-value has to be 0.

So let's use this, and the equation, to help us find the y-intercept.

Plug in 0 for x; this will help us find the y.

4(0) + 5y = 20

0 + 5y = 20

5y = 20

y = 4

Now we know that the line crosses the y-axis at x = 4. The intercept is (0, 4) because we already knew that x = 0.

You can substitute these (5, 0) and (0, 4) back into the equation to make sure they fit, or graph the equation and make sure the points are correct.

You might be interested in
5. For which equation is the ordered pair (-3,4) a solation?
liraira [26]
Don’t click the file above it’s you may get a virus because you could simply just say the answers instead of here’s a file . And the answer is A
8 0
3 years ago
Read 2 more answers
Suppose a and b are both non zero real numbers. Find real numbers c and d such that 1/a+ib= c+id
Thepotemich [5.8K]

\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}

Explanation

\frac{1}{a+bi}=c+di

Step 1

multiplicate by the conjugate

\begin{gathered} \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(bi)^2} \\ \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(-b^2)}=\frac{a-bi}{a^2+b^2} \end{gathered}

notice that

\begin{gathered} \frac{1}{a+bi}=\frac{a-bi}{a^2+b^2}=\frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i \\ \frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i=c+di \\ so \\  \end{gathered}\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}

I hope this helsp you

6 0
1 year ago
6x=12 with explanation plz
lord [1]

Answer:

X = 2

Step-by-step explanation:

6(2) = 12

6 X 2 = 12

4 0
2 years ago
PLZZ Help me algebra 2.
Kipish [7]

Answer:

32

Step-by-step explanation:

7 0
3 years ago
2x<br> +1 = 7<br> -Z | -1<br> = [?]<br> =<br> 2x<br> 3
enot [183]

Answer: nop

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • The box plot represents this data set. {20, 25, 30, 38, 40, 42, 45, 50, 65, 70} What value does the letter E represent on the bo
    6·2 answers
  • Which of the following are NOT sufficient to prove that a quadrilateral is a parallelogram? I. Two pairs of opposite angles cong
    8·1 answer
  • Evaluate 2xy when x = -<br> and y = 3.<br> The value of the expression is<br> ]
    12·1 answer
  • What is a frequency table
    12·2 answers
  • Subtract these polynomials.
    13·2 answers
  • A bank teller has 7 rolls of coins. Each roll has 40 coins. How many coins does the bank teller have.
    15·1 answer
  • D/dt integral from 0,2x of (e^t+2t)dt is?
    7·1 answer
  • Am a little lost so can you help me?<br>​
    7·2 answers
  • Write an equation in slope-intercept form for the line that passes through (8,1) and (4,3)
    5·1 answer
  • What is ST?<br> S<br> 30<br> V<br> Q<br> 17 T<br> 19<br> R 5<br> ST=
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!