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3 years ago

Which values are solutions to the inequality below? √x > 25?

Mathematics

1 answer:

dezoksy [38]3 years ago

5 0

Answer:

C and D

Step-by-step explanation:

So basically when u square -5 or +5, u get 25 either way

And since the square root of x is greater than or equal to 25, u can use both of them for answers.

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A plumber charges 130 to start job plus 56 per hour . How many hours did she work if the total bill is 214

iragen [17]

Answer:

The plumber worked for 1.5 hours

Step-by-step explanation:

y = 130 + 56x

Substitute 214 for y in the equation

214 = 130 + 56x

-130 -130 Subtract 130 from both sides

84 = 56x Divide both sides by 56

1.5 = x

4 0

3 years ago

Read 2 more answers

Lindsie is painting on a canvas with dimensions of 3 ft by 4 ft. She wants to make a display model for a gallery that has twice

love history [14]

Answer:

B. 1.4 feet

Step-by-step explanation:

Let, the amount of increase be 'x' ft.

Since, the length and width of the canvas are 4 ft and 3 ft respectively.

Thus, area of the canvas, $A_{c}$ = length × breadth = 4 × 3 = 12 ft²

Since, the area of display model is twice the area of the canvas. We have,

$A_{d}$ = 2 × $A_{c}$

i.e. $A_{d}$ = 2 × 12

i.e. $A_{d}$ = 24 ft².

As, the length and width of the canvas are increased by 'x'.

The, length and width of the display model are (x+4) ft and (x+3) ft.

So, we get,

$A_{c}$ = length × breadth = (x+4) × (x+3) = $x^{2} +7x+12$

Since, $A_{d}$ = 24 ft²

i.e. $x^{2} +7x+12$ = 24

i.e. $x^{2} +7x-12=0$

Solving the quadratic equation, we get,

i.e. x = -8.4 and x= 1.4

Since, the value of x cannot be negative.

Thus, x = 1.4 feet.

4 0

3 years ago

PLEASE HELP WILL GIVE BRAINLIEST

saul85 [17]

Answer:

$\sqrt{0.02}$

Step-by-step explanation:

Let's first get the square root of 0.02...

≅ $0.1414$

Let's convert that to a percentage...

14.14%, which is less than 18%, so it checks out in that sense...

Now, let's convert 0.1414 to a fraction...

$\frac{707}{5000}$ , which is greater than $\frac{1}{8}$ (You can check this by multiplying $\frac{1}{8}$ by $\frac{625}{625}$ )

Therefore, $\sqrt{0.02}$ makes the inequality true.

6 0

3 years ago

The officers of a high school senior class are planning to rent buses and vans for a class trip. Each bus can transport 6363 st

attashe74 [19]

Answer:

1 bus, 72 vans
$6960 is the minimum cost

Step-by-step explanation:

A bus costs over $19 per student; a van costs less than $12 per student. The required number of students could be transported by 81 vans, but that requires 81 chaperones.

Since there are only 80, and a bus requires fewer chaperones per student, we can reduce the number of required chaperones to an acceptable level by employing one bus. 1 bus replaces 9 vans, and requires 1 less chaperone than 9 vans.

The minimum cost is 1 bus and 72 vans. That cost is $1200 +72×$80 = $6960.

3 0

3 years ago

Let f(x) =x^2-1 and g(x) = x+3. Find f(g(x))

givi [52]

To find f(g(x)), we'll treat g(x) as if it were the x in f(x).

g(x) = x + 3

f(g(x) = (x+3)^2 - 1

5 0

3 years ago