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4 years ago

Solve for x: 4x - 7 = 2

Mathematics

2 answers:

djverab [1.8K]4 years ago

5 0

Answer:

9/4 or 2& 1/4 or 2.25

Step-by-step explanation:

4x-7=2

4x=9

x= 9/4 or 2.25

belka [17]4 years ago

4 0

Answer:

Your correct answer is 9/4

Step-by-step explanation:

First, you need to add a 7 to both sides.

4x − 7 + 7 = 2 + 7

4 x = 9

Now, you need to divide both sides by 4.

4x/4 = 9/4

Therefore, your correct answer is x = 9/4.

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The base of a triangle exceeds the height by 4 inches. if the area is 178.5 square inches, find the length of the base and the h

Elanso [62]

A = 1/2 * b * h
A = 178.5
b = h + 4

178.5 = 1/2 * (h + 4) * h
357 = h^2 + 4h
h^2 + 4h - 357 = 0
(h - 17)(h + 21) = 0

h - 17 = 0
h = 17

h + 21 = 0
h = -21 .....not this one because it is negative

b = h + 4
b = 17 + 4
b = 21

so the height is 17 inches and the base is 21 inches <==

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Answer:

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3 years ago

Solve the inequality. 14 + 10y ≥ 3(y + 14)

atroni [7]

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$\large\displaystyle\text{$\begin{gathered}\sf \boldsymbol{\sf{Simplify \ both \ sides \ of \ the \ inequality. }} \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{10y+14\geq 3y+14 } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \boldsymbol{\sf{Subtract \ 3y \ from \ both \ sides. }} \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{10y+14-3y\geq 3y+42-3y } \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{7y+14\geq 41 } \end{gathered}$}$

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$\large\displaystyle\text{$\begin{gathered}\sf \bf{\frac{7y}{7}\geq \frac{28}{7} } \end{gathered}$}\\\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{y\geq 4} \end{gathered}$} }$

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2 years ago

A rectangle's length is 4 feet more than its width. If the area of the rectangle is 396 square feet, what is its width, in feet?

asambeis [7]

Let the length be l and width be w.
l = w + 4

Area = length x width
396 = (w + 4)w
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Width = 18 feet.

4 0

3 years ago

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