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3 years ago

Six added to three times a number is equal to four less than five times the number what is the number

Mathematics

1 answer:

likoan [24]3 years ago

6 0

3x+6= 5x-4
6= 2x+4
10=2x
5=x

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Solve for y when x = 5. y = 3x + 4

pantera1 [17]

Answer:

Step-by-step explanation:

Plug in

y = 3(5) + 4
y = 19

5 0

2 years ago

Which equation should be used to calculate the 43rd partial sum for the arithmetic sequence.

MariettaO [177]

Answer: First Option : Sₙ= n/2(a₁ + aₙ)

Step-by-step explanation:

The nth partial sum of an arithmetic sequence or the sum of the first n terms of the arithmetic series can be defined as the sum of a finite number of term in an arithmetic sequence.

It is calculated using the formula:

Sₙ= n/2(a₁ + aₙ)

Where :

a₁ = First term

aₙ = last term

n = number of terms

6 0

2 years ago

A company manufactures cell phones. In August, a random sample of 125 cell phones was inspected, and 3 phones were found to be d

german

Answer:

192

Step-by-step explanation:

To find how many phones are expected to be defective, we need to represent the values in a fraction.

$\dfrac{x}{8000}=\dfrac{3}{125}$

x = number of defective phones

Now we can solve this using algebra.

To get the value of x we need to multiply both sides by 8000 to leave x alone.

$x=\dfrac{3}{125}(8000)$

$x=0.024(8000)$

$x=192$

So around 192 cell phones are expected to be defective out of 8000 phones.

6 0

3 years ago

You are working as an office apprentice for the bksb Newcastle Arena.

makvit [3.9K]

Answer:

Mean = £1.8 million

Step-by-step explanation:

The MEAN is the sum of all the numbers divided by the number of numbers.

There are 5 numbers in total
The sum is $1.4+1.6+1.8+2.5+1.7=9$ million

Hence the mean is $\frac{9}{5}=1.8$ million

5 0

3 years ago

The price of gold is often reported per ounce. At the end of 2005, this price was $513. At the end of 2015, it was $1060. By wha

GuDViN [60]

Answer:106.63%.

Step-by-step explanation:To find the percentage of the price per ounce of gold increase we will use % increase formula.Therefore, the price of per ounce of gold increased by 106.63%.

7 0

2 years ago