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
tigry1 [53]
3 years ago
7

What is the value of x in the equation 4x + 8y=40 when y=0.8

Mathematics
2 answers:
Fed [463]3 years ago
8 0
8*.8=6.4 
4x+6.4=40
40-6.4=33.6
33.6/4=x
8.4=x

Hope this helps :)
melisa1 [442]3 years ago
3 0
To solve this equation, first you must plug in the given y value.
This leaves you with:
4x + 8(0.8) = 40

Follow PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction) to simplify the parenthesis.
After multiplying, you get:
4x + 6.4 = 40

Continue following PEMDAS to subtract 6.4 from both sides of the equal sign. Make sure to subtract on both sides so the equation remains even and balanced.
This leaves you with:
4x = 33.6

From here, isolate your variable, x, by dividing by four on both sides.
Leaving you with:
x = 8.4

So your final answer is x = 8.4 when y = 0.8

You might be interested in
2. Con los siguientes vectores realice las operaciones expresadas con su gráfica ( polígono
Sindrei [870]

Gánster:

polígono

de nada

3 0
3 years ago
A geometric sequence has a4=4 and a5=7. What is a1?
ella [17]
A is 0.025 from what i worked out, I hope it is correct :)

4 0
3 years ago
Read 2 more answers
A social psychologist conducts an experiment and finds a statistically significant result. This means that the a. experiment is
coldgirl [10]

Considering that the hypothesis test found an statistically significant result, it is found that the correct option is:

c. probability of obtaining this finding by chance alone is less than some quantity.

<h3>What is an hypothesis test?</h3>
  • When a hypothesis test, there are two hypothesis, the null and the alternative hypothesis.
  • There is also a significance level.
  • If the probability of obtaining the finding by chance is less than the significant value, the result is statistically significant.

Hence, according to these bullet points, option C is correct.

You can learn more about hypothesis tests at brainly.com/question/16313918

7 0
2 years ago
What is the inverse function of d(x) = 2x - 4?
Naddik [55]
Let d(x) = 2x - 4

Or

y = 2x - 4

We have replace x = y

x = 2y - 4

Now Isolate "y"

x + 4 = 2y

Pass "2" dividing

(x + 4) / 2 = y

y = x/2 + 2

Or

d(x)^-1 = x/2 + 2

7 0
3 years ago
A triangle has vertices A(1, 1), B(2, 4), and C(4, 2). Line p is parallel to side AB and contains point C.
kenny6666 [7]

Answer:

p:y = 3x-10

Step-by-step explanation:

We are given the following in the question:

A(1, 1), B(2, 4), C(4, 2)

i) Slope of AB

A(1, 1), B(2, 4)\\\\m = \dfrac{y_2-y_1}{x_2-x_1}\\\\m = \dfrac{4-1}{2-1}=3

Thus, slope of AB is 3.

ii) Point slope form

The point slope form of a line can be written as:

y - y_1 = m(x - x_1)

The point intercept form of line can be written as:

y = mx + c

The line is parallel to AB and contains point C(4, 2). Since line p is parallel to AB, line p will have the same slope as line AB

Putting values, we get,

y - 2 = 3(x-4)\\y = 3x-12+2\\y = 3x-10

which is the required slope intercept equation of line p.

4 0
3 years ago
Other questions:
  • IN A CERTAIN SKYSCRAPER THE ELEVATORS WHISK YOU TO A RESTURAUNT IN THE SKYSCRAPER AT A SPEED OF 800 feet in 70 seconds. If the r
    6·2 answers
  • Write the word sentence as an equation. Then solve.
    15·2 answers
  • A department store has a discount on shoes based on percentage of the price. Suppose one pair of shoes is marked down 70$ to 49$
    6·1 answer
  • What is the surface area of a prism
    7·1 answer
  • Find the dimensions of a rectangle with perimeter 68 m whose area is as large as possible. (If both values are the same number,
    15·1 answer
  • Which property justifies the fact that 5(x-2)is equivalent to 5x-10
    12·2 answers
  • I need to know how to work this out: 24 red marbles is 40% of ______ marbles.
    8·1 answer
  • Simplify The Expression <br><br> 2y - y + 4 + y<br> y=3​
    5·1 answer
  • Steve has a 100 $ gift card for his phone, he wants to use it on songs a song cost 3.99 how many songs can Steve buy using the g
    6·2 answers
  • I WILL GIVE BRAINLIEST!! NO LINKS PLZ <br><br> 4) Simplify.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!