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Simora [160]
3 years ago
6

URGENTT!!!!!!!

Mathematics
1 answer:
Cloud [144]3 years ago
4 0
What is this about because I’m confuse
You might be interested in
What is the fifth term of the sequence described by the following explicit formula? an = 4 + (n + 1)(-5)
Studentka2010 [4]

Answer:

a

Step-by-step explanation:

substitute n = 5 into the explicit formula , then

a₅ = 4 + (5 + 1)(- 5) = 4 + 6(- 5) = 4 - 30 = - 26

6 0
2 years ago
Guys please help me with this question
diamong [38]

Answer: Can I get brainliest and 5 stars? thank you.

a) \frac{65}{99}

b) \frac{59}{90}

c) \frac{13}{20}

Step-by-step explanation:

a) 0.65 I can't put line above it, but the line expresses that 6 and 5 and repeating infinitely. Let X equal the decimal number.

x=0.65

First multiply by 1 followed by as many zeros as repeating numbers there are. In this case since 6 and 5 are the repeating numbers, we have to add 2 zeros which is basically multiplying by 100

0.65*100=65.65 (another 65 remains on the right because they're infinite.)

Now substract from the original number. Now we have a new equation that says: 100x=65.65.

Substract equation 1 from equation 2.

100x=65.65\\-x=0.65

---------------------------------

99x=65

Solve just like any other equation. Divide by 99 to isolate x.

\frac{99x}{99}=\frac{65}{99}

x=\frac{65}{99} This is the fraction.

------------------------------------------------------------------------------------------------

b) 0.65^-This one is a little bit different because we only have 1 repeating number.

In this case we have to multiply by 10.

0.65^-*10=6.55^-

Equation 1: x=0.65^-

Equation 2: 10x=6.55^-

Substract.

10x=6.55^-\\-x=0.65^-

-----------------------

9x=5.9

divide by 9 to isolate x

\frac{9x}{9}=\frac{5.9}{9}

x=\frac{5.9}{9}

To get rid of the decimal in the numerator, multiply both numerator and denominator by 10 so that we don't change the fraction.

x=(\frac{5.9*10}{9*10} )

x=\frac{59}{90} and this is your fraction.

------------------------------------------------------------------------------------------------------

c) 0.65 this one has no repeating number. It's a finite decimal number.

I assume you already know that; a=\frac{a}{1}, so, we can do the same here to have a fraction.

0.65=\frac{0.65}{1}

Now, in order to get rid of the decimal, multiply by 1 followed by as many zeros as decimal numbers are. In this case 2 zeros because there are 2 decimal numbers, so it's 100. Remember that if you do it in the numerator, you have to do it in the denominator as well to not change the fraction.

\frac{0.65*100}{1*100} =\frac{65}{100}

Simplify if possible.

\frac{65/5}{100/5} =\frac{13}{20} This is your fraction.

6 0
3 years ago
Gina will pay $14 for fabric at a crafting store. The tax rate is 8.5%. How much will she pay for her fabric including tax?
Gwar [14]

Answer:

$15.19

Step-by-step explanation:

8.5% = 0.085

0.085 x 14 = $1.19

1.19+14= $15.19

7 0
3 years ago
Trevor is looking at purchasing a new cellular phone plan. Company A charges $35.25 a month, plus $.11/min for local calls. Comp
AysviL [449]

Answer:

We can create a one-variable equation and solve for x.

we set 35.25+0.11x equal to 14.25+0.32x

35.25+0.11x=14.25+0.32x

then we just solve for x to get 100

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
a man in a lighthouse tower that is 30ft he sports a ship at sea at an angle of depression of 10 degree how far is the ship from
Llana [10]
We have a triangle where.
a=adjacent leg of A=30 ft
A=90º-(angle of depression)=90º-10º=80º
b=distance between the base of the lighthouse and the ship
tan A= opposite /adjacent.
tan 80º=b /30 ft  ⇒b=(30 ft)(tan 80º)≈170.14 ft

Answer: the distance would be 170.14 ft
3 0
3 years ago
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