2 years ago

The sum of twice a number and five is at most -25

Mathematics

1 answer:

lorasvet [3.4K]2 years ago

4 0

n= number

2n+5 <= -25

subtract 5 from each side

2n+5-5 <= -25 -5

2n <= -30

divide each side by 2

n <= -15

You might be interested in

Help quick

xeze [42]

48/53

Steps

15 inches = 1.25 feet

Ratio = 12 : 1.25

Simplified = 9.6 : 1

9.6 + 1 = 10.6

9.6/10.6 = 48/53

Checking...

12 feet = 144 inches

Ratio = 144 : 15

144 + 15 = 159

144/159 = 48/53

5 0

2 years ago

Read 2 more answers

Please help (10POINTS)

kobusy [5.1K]

Answer: it’s d

Step-by-step explanation: i did that

6 0

2 years ago

If rx – st = r, which expression represents r.

statuscvo [17]

Answer:

${ \tt{rx - st = r}}$

» Collect like terms, r terms on the left hand side by subtracting r from both sides and adding st to both sides

${ \tt{(rx - st) { \green{ - r + st }} = r{ \green{ - r + st}}}} \\ { \tt{rx - r = st}}$

» On the left hand side, factorise out r

${ \tt{ \green{r(x - 1)} = st}} \\ \\ { \boxed{ \tt{ \blue{ \: r = \frac{st}{x - 1} }}}}$

5 0

2 years ago

An aquarium tank holds 190 liters of water. How much is this in gallons? Use the following conversion: 1 gallon is 3.8 liters.

Bogdan [553]

All you have to do is divide 190 liters by 3.8 liters. To get the calculated amount of gallons.

7 0

3 years ago

Read 2 more answers

Find the focus of the parabola whose vertex is at<br> the origin and whose directrix is x = 3.

defon

Answer:

Step-by-step explanation:

Vertex is halfway between focus and directrix, so focus is (-3,0).

6 0

2 years ago