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3 years ago

What is -2 and 1/2 as a decimal

Mathematics

2 answers:

disa [49]3 years ago

8 0

(-2.5) i think thats what ur looking for. if not, sorry!

olganol [36]3 years ago

5 0

Answer:

-2.5

Step-by-step explanation:

Just change 1/2 to .5 and there you have it. Negative two isn't a fraction or percentage so it doesn't need to be changed.

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Which system of inequalities is represented by the graph?

alexgriva [62]

Answer:

$\left\{\begin{array}{l}y\ge -x-6\\ \\ y\le 2x+4\end{array}\right.$

Step-by-step explanation:

The diagram shows shaded region which boundary is bounded with two lines.

<u>Equation of the 1st line:</u>

This line passes through the points (-6,0) and (0,-6), so its equation is

$\dfrac{x-(-6)}{0-(-6)}=\dfrac{y-0}{-6-0}\\ \\\dfrac{x+6}{6}=\dfrac{y}{-6}\\ \\y=-x-6$

<u>Equation of the 2nd line:</u>

This line passes through the points (-2,0) and (0,4), so its equation is

$\dfrac{x-(-2)}{0-(-2)}=\dfrac{y-0}{4-0}\\ \\\dfrac{x+2}{2}=\dfrac{y}{4}\\ \\y=2x+4$

The origin belongs to the shaded region, so it must satisfy both inequalities, so

$-0-6=-6\le 0\Rightarrow$ correct inequality is $-x-6\le y$

$2\cdot 0+4=4\ge 0\Rightarrow$ correct inequality is $2x+4\ge y$

Note that signsare with notion "or equal to" because lines are solid.

Answer:

$\left\{\begin{array}{l}-x-6\le y\\ \\2x+4\ge y\end{array}\right.\Rightarrow \left\{\begin{array}{l}y\ge -x-6\\ \\ y\le 2x+4\end{array}\right.$

7 0

3 years ago

Please help with this word problem would be a huge help!!

Verdich [7]

Answer:

11.2 miles

Step-by-step explanation:

What has been describe here is a right triangle.

He went 10 miles east, and he turned left and went 5 miles. He started at home ended at work. We want to make a road from his home directly to his workplace (no turns; straight there).

So we have by Pythagorean Theorem:

$5^2+10^2=c^2$

$25+100=c^2$

$125=c^2$

Square root both sides:

$\sqrt{125}=c$

$11.2 \approx c$

11.2 miles would be the length of that direct path.

5 0

3 years ago

A family room has a circular rug with a radius of 7 m .

irina [24]

Answer:

153.94m²

plz mark me as brainliest :)

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3 years ago

write an equation for the line that passes through the point (8,3) and parallel to -4x+8y=23. Use slope-intercept form.

kvasek [131]

(1/2)x+b=y because the equation that given the slope is 1/2 if you leave y alone and take the x’s number

put the point now , 4+b=3 so b is -1

the equation is (1/2)x-1=y

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3 years ago

The top of a round table is 4 feet in diameter. The top splits to allow two extra boards to be inserted. The expansion boards ar

Nutka1998 [239]

The answer will be 6

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4 years ago

What is -2 and 1/2 as a decimal​

What is -2 and 1/2 as a decimal