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2 years ago

(21) +(61/1,000) write in standard form

Mathematics

1 answer:

Pani-rosa [81]2 years ago

7 0

Multiply and add it up and you got ur answer

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2.Solve the following quadratic equations<br> i. 9x^2 - 1/16<br> ii. 2h^2 - 3h - 27

Juli2301 [7.4K]

$i)~9x^2-\dfrac{1}{16}=0\iff9x^2=\dfrac{1}{16}\iff x^2=\dfrac{1}{9\cdot16}\iff \\\\x^2=\dfrac{1}{144}\iff x=\pm\sqrt{\dfrac{1}{144}}=\pm\dfrac{1}{12}\Longrightarrow\boxed{x=\pm\dfrac{1}{12}}$

$ii)~2h^2-3h-27=0\\\\\Delta=b^2-4ac\to \Delta=(-3)^2-4\cdot2\cdot(-27)\to\Delta=9+216=225\\\\
\Longrightarrow h=\dfrac{-b\pm\sqrt{\Delta}}{2a}=\dfrac{-(-3)\pm\sqrt{225}}{2\cdot2}=\dfrac{3\pm15}{4}\\\\\begin{cases}h_1=\dfrac{3+15}{4}=\dfrac{18}{4}\iff \boxed{h_1=\dfrac{9}{2}}\\h_2=\dfrac{3-15}{4}=\dfrac{-12}{4}\iff\boxed{h_2=-3}\end{cases}$

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2 years ago

You can make a tent by throwing a piece of cloth over a clothesline, then securing the edge to the ground with stakes so that an

4vir4ik [10]

Based on the required width and height of the tent, the length of the cloth would have to be 14.4 ft.

<h3>How long should the length of the cloth be?</h3>

The opening of the tent would be an isosceles triangle but if it is divided in two from the top, a right-angled triangle will be formed and the hypotenuse will be the length of the cloth on one side.

That length - according to the Pythagoras theorem - would be:

= √(6² + (8 /2)²)

= √(36 + 16)

= 7.2 ft

As this is the length of one side of the cloth, the length of the entire cloth is:

= 7.2 x 2

= 14.4 ft

Find out more on the Pythagoras theorem at brainly.com/question/343682.

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2 years ago

X+2/3 + x-1/4=x please answer. I need it b4 2moro

Dmitrij [34]

Answer:

-5/12

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

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2 years ago

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The matrix C=1,-2,-3,7 was used to encode a phase to 7,-28,-25,-35,-2,-21,107,90,123,17. find d-1 and use it to decode the matri

algol13

-4 is the matrix of the used numbers

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3 years ago

What is one way to compare fractions with unlike denominators? include an example to support your reasoning

stich3 [128]

Answer:

Compare two fractions with different numerators and different denominators (e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2). Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions (e.g., by using a visual fraction model).

Step-by-step explanation:

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2 years ago

(2*1) +(6*1/1,000) write in standard form

(21) +(61/1,000) write in standard form