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Butoxors [25]
3 years ago
8

What is the value of x in the equation 3x-4y=65 when y =4

Mathematics
1 answer:
salantis [7]3 years ago
3 0
3 x - 4 y = 65

Refine :

3 x - 4 * 4 =  65

3 x - 16 = 65

Add 16 to both sides :

3 x - 16 + 16 = 65 + 16

3 x = 81

Divide both sides by 3 :

3 x / 3  = 81 / 3

x = 81 / 3

x = 27

hope this helps!

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Penelope goes to work after school for 4.5 hours on Mondays, Tuesdays, and Fridays. She doesn’t have classes on Wednesdays or Th
iVinArrow [24]

Answer:

Her hourly rate is <u>$14</u>.

Step-by-step explanation:

Given:

Penelope goes to work after school for 4.5 hours on Mondays, Tuesdays, and Fridays.

She works 8 hours each on Wednesdays or Thursdays.

Now, to find her hourly rate.

So, total hours Penelope work on Mondays, Tuesdays, and Fridays:

4.5+4.5+4.5=13.5\ hours.

And, total hours she work on Wednesdays and Thursdays:

8+8=16\ hours.

Now,<em><u> the total hours each week she work:</u></em>

13.5+16=29.5\ hours.

<u><em>Total money she makes each week</em></u> = $413.

Now, to get the hourly rate we divide the total hours each week she work by total money she makes each week:

413\div 29.5

=\$14.

Therefore, her hourly rate is $14.

6 0
3 years ago
What is the recursive rule for the sequence?
love history [14]

Answer : option d

4.4, 5.8, 7.2, 8.6, 10, …

First we find the common difference between two terms

5.8 - 4.4 = 1.4

7.2 - 5.8 = 1.4

8.6 - 7.2 = 1.4

10 - 8.6 = 1.4

So common difference is 1.4

To find recursive rule, we add the difference with previous term

Recursive rule is a_n = a_{n-1} + d

a1 is the first term so a1= 4.4

d is the difference = 1.4

So recursive rule is

a_n = a_{n-1} + 1.4, where a1 = 4.4

4 0
3 years ago
Researchers wanted to estimate how many lizards were living in a nearby wildlife preserve. The researchers went to the preserve
JulijaS [17]

Answer:

rrnnrnnrnrnrehjrhhrhrhreebbh5hjhj4hjhjehjhj

Step-by-step explanation:

7 0
3 years ago
Samual has a collection of toy cars his favorites are the 27 red ones which makes up 60% of his collection how many toy cars dos
vagabundo [1.1K]

Answer:

45

Step-by-step explanation:

Use khan acedaemy

5 0
2 years ago
The simple interest on $400 at 5% per annum for 2 years is?
maxonik [38]

Answer:

\frac{400 \times 5 \times 2}{100}

Answer A is correct

Step-by-step explanation:

p = 400 \\ r = 5\% \\ t = 2 \:  \: years

Now let's find the simple interest.

\frac{prt}{100 }  \\  =  \frac{40 0 \times 5 \times 2}{100}  \\  = 40

hope this helps

brainliest appreciated

good luck! have a nice day!

4 0
3 years ago
Read 2 more answers
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