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ANTONII [103]
3 years ago
9

PLEASE PLEASE I BEG YOU...

Mathematics
2 answers:
sasho [114]3 years ago
7 0

Answer:

1) y=4

2) y=7

3) x=6

Step-by-step explanation:

to get y, divide x by 2. to get x, multiply y by 2

ozzi3 years ago
5 0
1st: 4
2nd: 7
3rd: 6

Explanation: 1st two, you have to plug-in the x values in and then simply divide. 3rd one you have to think of a number that equals 3 when it’s being divided by 2 which is 6.
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tonya earned $5.00 she put half of the money into savings and kept the rest to spend.she bought a toy for $2.00.how much spendin
nalin [4]

Answer:

50 cents

Step-by-step explanation:

half of 5.00$ is 2.50$

6 0
3 years ago
Mike is making a nut mixture for an upcoming camping trip. He makes the mixture by combining of a cup of cashews and of a cup of
vitfil [10]
28 ÷ 2 = 14. you need 14 cups of each nut to get a total of 28 cups combined
7 0
3 years ago
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A bakery sold a total of 500 cupcakes in a day, and 360 of them were mocha flavored.
GREYUIT [131]

Answer:

72%

Hope this Helps! :)

7 0
3 years ago
Read 2 more answers
-3(8n - 5) - 2n = 8n - 21
BigorU [14]

Answer:

Step-by-step explanation:

First you do the parentheses so the -3 x 8n= -24 and -3 x -5= 15

so it will look like this. -24n+15-2n=8n-21

Now combine like terms the -24n-2n.

-26n+15=8n-21 now subtract 8n now it will look like this

-34n+15=-21 now -15 from -21

-34n=-36

now if you want n by its self divide -34 and -36

7 0
3 years ago
For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a
Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

k {x}^{2}  + 20x + k = 0

The discriminant of this equation is given by;

D =  {b}^{2}  - 4ac

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

{20}^{2}  - 4 \times k \times k = 0

Simplify to get:

400 - 4  {k}^{2}  = 0

This implies that:

400  = 4  {k}^{2}

100 =  {k}^{2}

Take square root to get:

k =   \pm\sqrt{100}

k =  \pm10

k =  - 10 \: or \: k = 10

3 0
3 years ago
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