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3 years ago

HURRY!!!! I NEED HELP RIGHT NOW!!! THIS IS TO ALL OF THOSE MATH WIZARDS OUT THERE!!

Mathematics

2 answers:

melisa1 [442]3 years ago

4 0

17 1/3 or 52/3

I am just really good at these x questions, but sorry if it’s wrong

iren [92.7K]3 years ago

3 0

Answer:

−9.333

Step-by-step explanation:

(1): "6.75" was replaced by "(675/100)"

(675/100)+3/8*x-((13)*1/4)=0

Simplify 1/4

675 3 1

(———+(—•x))-(13•—) = 0

100 8 4

Simplify —

Equation at the end of step

675 3 13

(——— + (— • x)) - —— = 0

100 8 4

STEP

Simplify ——

Equation at the end of step

27 3x 13

(—— + ——) - —— = 0

4 8 4

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Answer:

4b+8 = 20

---------------

4b = 20

-------------------

b = 5

Step-by-step explanation:

We need to solve for b in the following equation:

$\frac{4b + 8}{2} = 10$

When we multiply each term by 2 the denominator cancels out:

$\displaystyle 2 \times \frac{4b + 8}{2} = 10 \times 2\\\\4b + 8 = 20$

Next, we subtract 8:

$4b +8 - 8 = 20 - 8\\4b = 20$

Final step, we isolate the variable. We cancel the multiplication on the left side when dividing by 4 on each term

$\displaystyle 4b = 20\\\\\frac{4b}{4} = \frac{20}{4}\\\\b = 5$

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2 years ago

What is the perimeter of the triangle? Round to the nearest tenth.

Cerrena [4.2K]

Answer: 19.8 Units

Step-by-step explanation:

The triangle is shown in the attached figure, and have three vertices: $AB$ , $AC$ and $BC$ .

Each vertice represents a point in the cartesian plane and the length of each side of the triangle is the modulus of each vector.

In this sense, the modulus $m$ is calculated as shown:

$m=\sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}}$

Hence, for each vector:

$AB=\sqrt{(-2-3)^{2} + (3-0)^{2}}=\sqrt{34}$

$AC=\sqrt{(-2-(4))^{2} + (3-(-3))^{2}}=\sqrt{40}$

$BC=\sqrt{(-4-3)^{2} + (-3-0)^{2}}=\sqrt{58}$

Now, the perimeter of a triangle is the sum of its three sides:

$AB+AC+BC=\sqrt{34} + \sqrt{40} + \sqrt{58}$

Finally:

$AB+AC+BC=19.77 \approx 19.8$

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Sedaia [141]

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