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Arada [10]
3 years ago
15

What is the value of x in the equation of 4x + 1.3 = - 7.9

Mathematics
2 answers:
il63 [147K]3 years ago
6 0

Answer:

x = -2.3

Step-by-step explanation:

4x + 1.3 = -7.9

First we want to combine the like terms.

Subtract 1.3 from both sides.

4x = -9.2

Now we want to isolate x by dividing both sides by 4.

x = -2.3

Check your answer by plugging x back into the original equation.

4x + 1.3 = -7.9

4(-2.3) + 1.3 = -7.9

Multiply.

-9.2 + 1.3 = -7.9

Add.

-7.9 = -7/9

Your answer is correct.

Hope this helps!

stiks02 [169]3 years ago
3 0

Step-by-step explanation:

4x + 1.3 = - 7.9

4x = - 7.9 - 1.3

4x = - 9.2

x = - 9.2/4

= - 2.3

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What is the area of this triangle.
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Answer:

13 square units

Step-by-step explanation:

You <em>could</em> calculate the length of each side using Pythagorean theorem, then use Heron's formula to find the area.  But there's an easier way: find the area of the rectangle that contains the triangle, and subtract the areas of the smaller triangles in the corners.

The area of the rectangle is 4 × 7 = 28.

The area of the upper left triangle is ½(2)(4) = 4.

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The area of the lower right triangle is ½(1)(7) = 3.5.

So the area of the triangle is:

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For a given function f(x), the domain is (-[infinity],-2] and the range is (5,[infinity]). What is the correct domain and range
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Answer:

Domain of the inverse is (5, infinity)

Range of the inverse is (-infinity , -2)

Step-by-step explanation:

To find the domain of the inverse function, we have that;

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The domain of the function becomes the range of its inverse

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6 0
3 years ago
What is the circumference of quadrilateral ABED in cm?
Natasha2012 [34]

the perimeter of quadrilateral ABED is 36.

<h3 /><h3>What is circumference?</h3>

A circumference is the total distance around a plane shape. Another name for circumference is called perimeter

To calculate the circumference of the quadrilateral, we use the formula below.

Formula:

  • Peri. of ABED = /AB/+/BE/+/ED/+/DA/............. Equation 1

From the Diagram,

Given:

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  • /BE/ = 2×/DA/ = 2×6 = 12 cm
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  • /DA/ = 6 cm

Substitute these values into equation 1

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Hence, the perimeter of quadrilateral ABED is 36.

Learn more about circumference here: brainly.com/question/20489969

#SPJ1

4 0
2 years ago
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