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3 years ago

What is −2 1/4⋅(−2 1/3) ?

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

8 0

The answer is 5 1/4. I took the test

geniusboy [140]3 years ago

5 0

= -2 1/4 (-2 1/3)
= -9/4 * -7/3
= 63/12

So, Your Answer would be 63/12 or 5 1/4

Hope this helps!

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NEED ANSWER ASAP REALLY IMPORTANT i will take any of the answers

dedylja [7]

$1. \: MC \: is \: tangent \: to \: (B)\Rightarrow \widehat{BCM}=90° \\ 2. \: MC \: and \: MZ \: are \: tangent \: to \: (B)\Rightarrow MC = MZ\Leftrightarrow 5x - 9 = x + 7\Leftrightarrow x = 4 \\ 3. \: BM = \sqrt{ {BC}^{2} + {MC}^{2} } = \sqrt{ {5}^{2} + {12}^{2} } = 13 \\ \Rightarrow EM = BM - BE = BM - BC = 13 - 5 = 8 \\ 4. \: \tan(60°) = \frac{MC}{BC} = \frac{13 \sqrt{3} }{ BC}\Leftrightarrow BC = \frac{13 \sqrt{3} }{\tan(60°)} = \frac{13 \sqrt{3} }{ \sqrt{3} } = 13 \\ 5. \: MC = \sqrt{ {BM}^{2} - {BC}^{2} } = \sqrt{ {20}^{2} - {12}^{2} } = 16 \\ 6. \:BZ = \sqrt{ {BM}^{2} - {MZ}^{2} } = \sqrt{ {25}^{2} - {20}^{2} } = 15 \\ \Rightarrow XE=BX+BE=BZ+BZ=15+15=30$

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3 years ago

Vicky and sarah have a total of 53 magnets on the inside of their lockers. Vicky has 4 fewer than twice as many as sarah. How ma

Alexeev081 [22]

Answer: 102

Step-by-step explanation: 53x2=106 and 106-4 is 102

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3 years ago

Parent function Y equals 0.5 square root X is..<br> -increasing <br> -decreasing<br> -constant

USPshnik [31]

Using translation concepts, it is found that:

The parent function y = $0.5^x$ is decreasing across it's domain because it's base, b, is such that 0 < |b| < 1.

The function f shifts the parent function 8 units up.

The function f shifts the parent function 5 units right.

<h3>What is a translation?</h3>

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.

The parent function is:

$y = 0.5^x$

It has a base with absolute value between 0 and 1, hence it is decreasing.

The changes to the function are given as follows:

y -> y + 8, hence the function was shifted 8 units up.

x -> x - 5, hence the function was shifted 5 units right.

More can be learned about translation concepts at brainly.com/question/4521517

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2 years ago

Cos W =0.53<br><br> Does anybody know this

Step2247 [10]

Answer:

58°

Step-by-step explanation:

Apply trig inverse properties

W = arccos(0.53)

W = 2 $\pi$ - arccos(0.53)

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2 years ago

At one show he places three mirrors: A, B and C, in a right triangular form. If the distance between A and B is 15 more than the

Butoxors [25]

Answer:

Step-by-step explanation:

We have the following sides:

AB, AC, BC

By means of the statement we know that:

The distance between A and B is 15 more than the distance between A and C, that is:

AB = AC + 15

The distance between B and C is 15 less than the distance between A and C

BC = AC - 15

We can infer that the longest side is AB, therefore being right triangular form, we have to:

AC ^ 2 + BC ^ 2 = AB ^ 2

Replacing we have:

AC ^ 2 = AB ^ 2 - BC ^ 2

AC ^ 2 = (AC + 15) ^ 2 - (AC - 15) ^ 2

AC ^ 2 = (AC ^ 2 + 30 * AC + 225) - (AC ^ 2- 30 * AC + 225)

AC ^ 2 = 60 * AC

AC = 60

Which means that the distance between mirror A and C is 60.

To check, we have:

AB = (60 ^ 2 + 45 ^ 2) ^ (1/2) = (5625) ^ (1/2) = 75

AB = AC + 15 = 60 + 15 = 75

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3 years ago