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4 years ago

Perform the necessary operations -9-(-6)+(-4)=

Mathematics

1 answer:

IgorC [24]4 years ago

3 0

Answer:

-7

Step-by-step explanation:

-9-(-6)+(-4)

-9+6-4

-3-4

-7

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Select the correct answer.

sladkih [1.3K]

Answer:

Step-by-step explanation:

Because this ia so simple I don't even need to explain to waste my last few brain cells.

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3 years ago

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Pemdas? thank you!<br>(-12 ÷ 3) × 2 + 23<br>

lana66690 [7]

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$( - 12 \div 3) \times 2 + 23 =$

$( - 4) \times 2 + 23$

$- 8 + 23 =$

$23 - 3 - 5 =$

$20 - 5 = 15$

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3 years ago

Select the correct answer.

adelina 88 [10]

Answer:

$\frac{5}{4} x - 2 = \frac{3}{2} x-4$

Step-by-step explanation:

$\frac{5}{2} x +\frac{7}{2} =\frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14-\frac{7}{2} \\\frac{10-3}{4} x =\frac{28-7}{2} \\\frac{7}{4} x =\frac{21}{2} \\x = \frac{21}{2} * \frac{4}{7} = 6 \\$

$\frac{5}{4} x -9 = \frac{3}{2} x-12 \\\frac{5}{4} x - \frac{3}{2} x= -12 + 9 \\\frac{5-6}{4} x = -3 \\\frac{-1}{4} x = -3 \\x = -3 * -4 \\x = 12$

$\frac{5}{4} x-2=\frac{3}{2} x-4 \\\frac{5}{4} x-\frac{3}{2} x=-4+2 \\\frac{5-6}{4}x=-2 \\\frac{-1}{4} x = -2 \\x = -2 * -4 \\x = 8$

$\frac{5}{2} x -7 = \frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14+7 \\\frac{10-3}{4} x =21 \\\frac{7}{4} x =21 \\x = 21 * \frac{4}{7} = 12 \\$

You could also replace x for 8 in every equation and see if both sides give the same answer

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3 years ago

The altitudes of a triangle are always inside the triangle?

padilas [110]

True, if you see the picture of a triangle with altitudes, the lines are drawn on the inside. Hope that helps!)

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3 years ago

Evaluate the expression below for m=2/3 and n= 1/3

Vitek1552 [10]

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3 years ago