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2 years ago

What are all the solutions of x2 + 3x - 4 = 0? 3 ооооооо DONE

Mathematics

1 answer:

Allisa [31]2 years ago

4 0

Answer:

x = -4, x = 1

Step-by-step explanation:

Now I do not know why you said done, but just saying, if you are done with a question, you should delete it. Now I am just going to assume you knew this and move on with the solution of the problem.

When you factor this equation, you will get (x+4)(x-1).

You can then solve for x using zero product property. The first root is -4 and the second root is 1.

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The maximum load of a horizontal beam that is supported at both ends varies jointly as the width and the height and inversely as

dezoksy [38]

Answer:

$360kg$

Explanation:

Here, we want to get the maximum load supported

From the first part of the question, we have it that:

The maximum load g, varies jointly with the width w and the height h, and inversely as the length l between the supports

Mathematically, we have that as:

$g\text{ = k }\times\frac{wh}{l}$

where k is the proportionality constant

Now, let us get the value of k

We substitute the first set of values as follows:

$\begin{gathered} 360\text{ = }\frac{k\times0.1\times0.06}{6} \\ \\ k\text{ = 360,000 }\frac{kg}{m} \end{gathered}$

Now, using this value of k, we want to get the value of g

Mathematically, we have that as:

$g\text{ = }\frac{360,000\times0.2\times0.08}{16}\text{ = 360 }kg$

8 0

1 year ago

If you take 7 cards frim a deck of 52 cards, how many cards do you have?

notsponge [240]

You would subtract 52-7 and your answer would be 45

5 0

3 years ago

Use distributive property to express 24+40

GREYUIT [131]

8(3+5)...they have the same factor which is 8..check

6 0

3 years ago

At midnight, the temperatures is -4 degrees Celsius. At noon, the temperature is 20 degrees Celsius. By how many more degrees Ce

8_murik_8 [283]

24 degrees celcius
-4 + 4 = 0
0 + 20 = 20
20 + 4 = 24 degrees celcius

4 0

2 years ago

Solve (x − 2) = 3<br> Give your solutions correct to 3 significant figures.

Pachacha [2.7K]

Answer:

(x − 2) = 3

Remove the bracket

x - 2 = 3

Group the constants at one side of the equation

x = 2 + 3

x = 5

Therefore x = 5.00 to 3 significant figures.

Hope this helps

6 0

3 years ago