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3 years ago

Write an algebraic expression for " the minimum value of 2x + 1 is 13"

Mathematics

1 answer:

bezimeni [28]3 years ago

6 0

2x+1=13 x=6 so an ok answer would be: 2x+10=40 x=15

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Justin wants to rent a boat and spend at most 36. The boat costs 6 per hour, and Justin has a discount coupon for 4 off. What ar

Maru [420]

Answer:

The possible numbers of hours Justin could rent the boat (0, 40/6]

Step-by-step explanation:

Let t represents the number of hours the boat is used,

∵ The boat costs 6 per hour,

So, the original cost of boat = 6t

Now, after getting $ 4 off

Final cost = 6t - 4

Now, final cost ≤ $ 36

$\implies 6t - 4 \leq 36$

$6t\leq 36 + 4$

$6t \leq 40$

$t\leq \frac{40}{6}$

Also, number of hours can not be negative

⇒ t ≥ 0

But, he must use the boat ⇒ t ≠ 0

Hence, the possible numbers of hours Justin could rent the boat,

$(0, \frac{40}{6}]$

7 0

3 years ago

The round wading pool at the Greenville Community Center has a diameter of 8 feet. What is the pool's circumference? use 3.14 fo

HACTEHA [7]

The circumference of pool is 25.12 feet

Solution:

Given that round wading pool at the Greenville Community Center has a diameter of 8 feet

Therefore,

Diameter = 8 feet

We know that,

$Radius = \frac{diameter}{2}\\\\Radius = \frac{8}{2}\\\\Radius = 4$

Thus radius is 4 feet

The circumference of circle is given by formula:

$C = 2 \pi r$

Where, "r" is the radius of circle

Substitute r = 4

$C = 2 \times 3.14 \times 4\\\\C = 25.12$

Thus circumference of pool is 25.12 feet

7 0

3 years ago

2(h-8) -h=h-16 A. 8 B. -8 C. No solution D. Infinitely many solutions

Grace [21]

Answer:

D. Infinitely many solutions

Step-by-step explanation:

The equation simplifies to ...

2h -16 -h = h -16

h -16 = h -16 . . . . . . a "tautology", true for all values of h.

There are infinitely many solutions.

7 0

2 years ago

What is the x value and y value of the point of intersection of y = -3x + 10 and y = 2x - 5?

kakasveta [241]

So you can use substitution...which is where you have Y all alone on one side of your equation and then plug it in to the other equation...2x-5=-3x+10 and you.solve for X. So x= 3. Then plug 3 into one of the original equations... Y=2(3)+5. So Y= 11.

8 0

3 years ago

Twenty-four students took a test. Fourteen students earned an A and 10 students earned a

horrorfan [7]

Total number of students who did a test was 24
Number of students who scored an A is 14
Number of students who scored a B is 10
Probability that when we randomly select a student, he/she will have an A is:
(Number of students that scored A)/(Total number of students)
=14/24
=7/12
Therefore our answer is 7/12

8 0

3 years ago