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frutty [35]
3 years ago
5

Melissa walked at a rate of 88 feet per minute. What was her approximate speed to the nearest tenth of a mile

Mathematics
2 answers:
LenaWriter [7]3 years ago
8 0

1 mile = 5280 feet

1 hour = 60 minutes


Illusion [34]3 years ago
7 0

88x60=5280

I believe it's 1 mile.

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Ramon drew boxplots to summarize the number of pages in each chapter of two books. The value of the interquartile ranges of thes
Brut [27]

Answer:

The answer is c

Step-by-step explanation:

The middle line is in the same spot

7 0
3 years ago
Please explain with working!!! Find the set of values of x that satisfy the inequality 9x^2-15x<6
Oksi-84 [34.3K]

Answer:

-1/3

Step-by-step explanation:

When solving a quadratic inequality, first solve it normally like you would for a normal quadratic equation. We have:

9x^2-15x

Ignore the less than sign and replace it with an equal sign and solve the quadratic for its zeros:

9x^2-15x=6

Subtract 6 from both sides:

9x^2-15x-6=0

Divide everything by 3:

3x^2-5x-2=0

Factor. Find two numbers that equal (3)(-2)=-6 that add up to -5.

-6 and 1 works. Thus:

3x^2-6x+x-2=0\\3x(x-2)+1(x-2)=0\\(3x+1)(x-2)=0

Find the x using the Zero Product Property:

3x+1=0 \text{ or }x-2=0\\x=-1/3\text{ or }x=2

Now, we need to replace the equal signs with symbols again. To do so, we need to test which symbol to place. Let's do the first zero first.

So, the first zero is:

x=-1/3

Assume that the correct symbol is >. Thus,

x>-1/3

Now, pick any number that is greater than -1/3. I'll pick 0 since it's the easiest. Now, plug 0 back into the very original inequality. If it works, then the sign is correct, if it doesn't, then simply use the opposite one. Therefore:

9x^2-15x

0 is indeed less than six, so our first correct solution is:

x>-1/3

For the second one, do the same thing. We have:

x=2

Assume that the correct symbol is <. Thus:

x

Again, pick any number less than 2. I'm going to use 0. Plug 0 back into the original equation

9x^2-15x

Again, this is correct. Therefore, x<2 is also the correct inequality.

So together, we have:

x>-1/3 \text{ and } x

Together, we can write them as:

-1/3

(Note that we don't need to worry about the "or equal to" part since the original inequality didn't have it.)

6 0
3 years ago
What is y=2x plus 4?​
svetoff [14.1K]

y=2x+4

that is an equation in slope intercept form where the slope is 2 so you would go up two right 1  and the y intercept would be 4 so (0,4)

3 0
3 years ago
a pizzeria sells a round pizza with the diameter of 24 inches. what is the area and what is the circumferance
Bond [772]
We have that
Area=pi*r²
D=24 in------------ > r=D/2=24/2=12 in

Area =pi*12²=452.16 in²

the circumference=2*pi*r=2*pi*12=75.36 in

the answer is
the area is 452.16 in² and the circumference is 75.36 in
3 0
3 years ago
WILL GIVE BRAINEST <br><br>Let f(x)=7x-4<br><br>what is f(6)<br><br>a.48<br>b.42<br>c.38<br>d.46
Sever21 [200]
F(6) = 7(6) - 4

f(6) = 42 - 4

f(6) = 38

Hope this helps!
4 0
3 years ago
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