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alex41 [277]
2 years ago
5

Help me please everyone;-;

Mathematics
2 answers:
Lana71 [14]2 years ago
6 0

Step-by-step explanation:

( \frac{ {x}^{4} }{ {x}^{3} } ) ^{ - 4 }  \\ ( {x}^{4 - 3} ) ^{ - 4} \\ (x ^{1} ) ^{ - 4}  \\ x ^{1 \times  - 4}  \\ x ^{ - 4}

Debora [2.8K]2 years ago
4 0

Answer:

x - 4

Step-by-step explanation:

\sf \bigg( \dfrac{ {x}^{4} }{ {x}^{3} }  \bigg) - 4

\sf \bull \dfrac{{a}^{m} }{ {a}^{n} }  =  {a}^{m - n}

\sf \:  {x}^{4 - 3}  - 4

\sf{x}^{1}  - 4

\sf \: x - 4

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The diagonals of a rectangle measure x+5 feet and 2x+1 feet what is the value of x?
vodomira [7]

The value of x is 4.

Given that diagonals of a rectangle measure x+5 feet and 2x+1 feet as shown in the attached figure.

The diagonal of a rectangle is a line or straight line that connects the opposite corners or vertices of the rectangle.

In the given figure ABCD is a rectangle.

OA=2x+1 and OD=x+5             [Given]

AC and BD are diagonals of a rectangle.

As we know that the diagonals of a rectangle are always equal.

So, AC = BD

We can also write it as,

2×OA=2×OD

2×(2x+1) =2×(x+5)

Apply the distributive property a(b+c)=ab+ac, we get

4x+2=2x+10

Subtract 2x from both sides, we get

4x+2-2x=2x+10-2x

2x+2=10

Subtract 2 from both sides, we get

2x+2-2=10-2

2x=8

Divide both sides by 2, we get

2x/x=8/2

x=4

Hence, the value of x=4 when diagonals of a rectangle measure x+5 feet and 2x+1 feet.

Learn more about rectangles from here brainly.com/question/1549055.

#SPJ4

4 0
2 years ago
Today only, a desk is being sold at a 33% discount. The sale price is $268. What was the price yesterday?
Serga [27]

Discount percent = 33%

Sale price = $268

Let the original price be $x.

So,

x - (33\% \: of \: x) = 268 \\  =  > x - ( \frac{33}{100}  \times x) = 268 \\  =  > x - ( \frac{33x}{100}) = 268 \\  =  >  \frac{100x}{100}  -  \frac{33x}{100}  = 268 \\  =  >  \frac{(100x - 33x)}{100}  = 268 \\  =  >  \frac{67x}{100}  = 268 \\  =  > 67x = 268 \times 100 \\  =  > 67x = 26800 \\  =  > x =  \frac{26800}{67}  \\  =  > x = 400

So, yesterday the price was $400.

5 0
3 years ago
Find the area of △LKJ.
nirvana33 [79]

Answer:

A=600\: u^{2}

<u>The correct answer is letter c.</u>

Step-by-step explanation:

The area equation of a triangle is given by:

A=\frac{bh}{2}  (1)

Where:

b is the base

h is the height

Let's find first the angle MJK (α), using the tangent definition.

tan(\alpha)=\frac{24}{32}

\alpha=tan^{-1}(\frac{24}{32})

\alpha=36.9^{\circ}

Now, if α = 37° then β (angle JLK) must be:

37^{\circ} + \beta + 90^{\circ}=180^{\circ}

\beta=53^{\circ}

Now, we can find the distance ML using again the tangent definition:

tan(\beta)=\frac{24}{ML}

ML=\frac{24}{tan(53)}

ML=18

The base of the triangle LKJ will be:

b=32+ML=32+18=50

Therefore, using equation (1) the area of △LKJ will be:

A=\frac{50*24}{2}

A=600\: u^{2}

The correct answer is c.

I hope it helps you!

5 0
3 years ago
54 fl oz = c I need the answer please
morpeh [17]
There are 8 ounces in 1 cup.
54/8 =6.75 cups
8 0
3 years ago
Read 2 more answers
Suppose the probability that a randomly selected​ man, aged 55​ - 59, will die of cancer during the course of the year is StartF
sveticcg [70]

Answer:

The probability that a man in this age category does NOT die of cancer during the course of the​ year is 0.997.

Step-by-step explanation:

Suppose the probability of an event occurring is P_{i}.

The probability of the given event not taking place is known as the complement of that event.

The probability of the complement of the given event will be,

1 - P_{i}

In this case an events <em>X</em> is defined as a man, aged 55​ - 59, will die of cancer during the course of the year.

The probability of the random variable <em>X</em> is:

P (X) = \frac{300}{100000}=0.003

Then the event of a man in this age category not dying of cancer during the course of the​ year will be complement of event <em>X, </em>denoted by<em> X</em>'.

The probability of the complement of event <em>X</em> will be:

P(X')=1-P(X)

          =1-0.003\\=0.997

Thus, the probability that a man in this age category does NOT die of cancer during the course of the​ year is 0.997.

7 0
3 years ago
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