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Marina86 [1]
3 years ago
13

What's does x equal?

Mathematics
2 answers:
GenaCL600 [577]3 years ago
8 0
7/6X=140
X=120
That's your answer.
Gnesinka [82]3 years ago
5 0
That is easy 175 or 2213

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Answer:

7:3, 14:6, 28:12

multiples.. hope that helps.

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You set up monthly recurring payments of $110.03, $45.66, and $22.87. How much will your recurring payments total over one year?
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The answer is B 2,142.72 because when you add it all up then multiply by 12 it will equal that.
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What number would ypu add to both sides of x^2+7x=4 to complete the square
Tcecarenko [31]

For a monic quadratic (factor of 1 on x^2) we always add half the coefficient on the linear (x) term, so

\left(\dfrac 7 2\right)^2 = \dfrac{49}{4}

Answer: 49/4

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(x + \frac 7 2)^2 = 4 + \frac{49}{4}


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Kali trains for a race by running around a track. Each lap around the track is 400 meters . She runs 4 kilometers each day how m
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30 laps is the definite answer to the question
4 0
3 years ago
A person invest $1200 in an account that earns 2% interest compound quarterly. Find when the value of the investment reaches $15
Basile [38]

Answer:

After 11 years the value of the investment reaches $1500.00

.

Step-by-step explanation:

The formula used for finding time (when the value reaches certain amount) is:

A= P(1+\frac{r}{n})^{nt}

where A= Future VAlue

P= Principal Value

r= rate of interest (in decimal)

n= no of times investment is compounded

t= time

Putting the values given and finding Time t,

A= $1500

P= $1200

r= 2% or 0.02

n= 4 (compound quarterly)

A= P(1+\frac{r}{n})^{nt}

1500= 1200(1+\frac{0.02}{4})^{4t}

Dividing both sides by 1200 and solving 0.02/4 = 0.005

1.25= (1+0.005)^{4t}

1.25= (1.005)^{4t}

Since t is in power we take the logarithm ln on both sides.

The rule of logarithm says that the exponent can be multiplied with the base when taking log

\ln1.25=ln( 1.005)^{4t}\\\ln1.25=4t * ln( 1.005)\\0.22 = 4t * 0.005\\Solving\,\,\\\frac{0.22}{4*0.005} = t\\=> t= 11\, years

8 0
3 years ago
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