280 ÷ 5.60 show the workings and the on the answer

Mathematics

1 answer:

Akimi4 [234]4 years ago

5 0

The correct answer is 50

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What is the area of the triangle whose vertices are D(−7, 3) , E(−7, 9) , and F(−11, 7) ? Enter your answer in the box.

Mars2501 [29]

ANSWER

The area of triangle DEF is $12$ square units.

EXPLANATION

The area of triangle DEF can be found using the formula,

$Area=\frac{1}{2}\times base \times height$ .

From the diagram, we can see that the height of the triangle is bounded between $x=-7$ and $x=-11$ .

We use the absolute value method to find the height to be,

$Height=|-7--11|=|-7+11|=|4|=4$ .

The base of the triangle is |DE|.

We can again use the absolute value method to to determine the length of the base to be,

$Length=|9-3|=|6|=6$

We now calculate the area to obtain,

$Area=\frac{1}{2}\times 6\times 4 =3\times 12=12$

Therefore the area of the triangle 12 square units

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3 years ago

What is the area of the space that Nadia has shown for scrapbooking?

VLD [36.1K]

Answer

98ft

Step-by-step explanation:

you multiply the lengths and widths of each shape and then add them all up

3 0

3 years ago

What is the interest due on $250 at 11% for 2 years

Afina-wow [57]

$\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\to& \$250\\ r=rate\to 11\%\to \frac{11}{100}\to &0.11\\ t=years\to &2 \end{cases} \\\\\\ I=(250)(0.11)(2)\implies I=55$