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2 years ago

HELP worth 20 pts :Which are equations? Select all that apply

Mathematics

2 answers:

dolphi86 [110]2 years ago

7 0

Answer:

12 = 3/4x, x - 4.8 = 9, and x - 3.1x = 14.7 + 12

Step-by-step explanation:

xeze [42]2 years ago

4 0

Answer:

12 = 3/4x, x - 4.8 = 9, and x - 3.1x = 14.7 + 12 are all equations because you have an equal sign that has you solve for each side and you can solve for the variable, unlike with the other ones you can't solve for the variable.

Step-by-step explanation:

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Four cups are placed upturned on the counter. each cup has the same number of sweets and a declaration about the number of sweet

Mumz [18]

Answer:

6? i hope this helps some! :)

Step-by-step explanation:

each has 6 in between the number

5 or 6 p there is a possibility of there being 6

7 or 8 there is at least 6 in this cup

6 or 7 there is at least 6 in this cup

7 or 5 there is a possibility of there being 6

4 0

2 years ago

Use the boundedness theorem to determine whether the polynomial function satisfies the given condition. The polynomial f(x) = x4

7nadin3 [17]

Answer:

So f(x) has no real greater than 8. Step - by - step explanation is shown in the attachment.

Step-by-step explanation:

Let f ( x) be a polynomial with real coefficients and with a positive lending coefficient.

If f(x) is divided by x-c and

a) if c>0 and all number in the bottom row of the synthetic division are non negative , then f(x) has no zero greater than c.

b ) if c<0 and the number in the bottom row of the synthetic division alternate in sign then f (x) has no zero less than c

As shown in the figure

Since the number in the bottom row of the synthetic division alternate in sign

So f(x) has no real greater than 8

6 0

3 years ago

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

kolbaska11 [484]

Answer:

120 liters of 60% alcohol solution is needed

Step-by-step explanation:

Let's assume

x liters of 60% alcohol solution is added

so, we get solution as

$=\frac{60}{100}\times x$

$=0.6x$

we are given

40 liters of a 20% alcohol solution is

$=40\times\frac{20}{100}$

$=8$

so, total alcohol solution is

$=8+0.6x$

now, we can find total solutions

total solutions is

$=x+40$

now, it is making 50% solution

so, we get

$\frac{8+0.6x}{x+40} =\frac{50}{100}$

now, we can solve for x

$\left(8+0.6x\right)\cdot \:100=\left(x+40\right)\cdot \:50$

$800+60x=50x+2000$

$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

4 0

2 years ago

Juan earns $18 per hour. He receives time and a half for overtime. Last week he worked 50 hours. What was Juan’s gross pay last

larisa [96]

Answer:

$900

Step-by-step explanation:

18 x 50 = 900

69.25 i belive for taxes

3 0

2 years ago

What are 3 ratios that are equivalent to 18:4

MAXImum [283]

Try 9:2 and 3:1 but I'm not sure if that's right or not

7 0

3 years ago

Read 2 more answers