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2 years ago

You must reverse the inequality sign when solving this inequality: x + 7 < 4

Mathematics

1 answer:

SSSSS [86.1K]2 years ago

7 0

I'm not 100% sure what you want me to do with this but i hope this helps:

x < -3

or if you want me to flip the sign then the solution becomes

x > -3

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I need help solving these two equations using substitution!! please helpppp

Levart [38]

Answer:

i would suggest using www.mathpapa.com ^^ its an algebra calculator and saved me in algebra 1

3 0

3 years ago

The inches of rainfall in the rainforest is represented by the function f(x) = 3(x-2)+ 4. What is the average rate of change bet

nata0808 [166]

Answer:

The average rate of change of rainfall in the rainforest between 2nd year and 6th year = <u>3 inches</u>

Step-by-step explanation:

Given function representing inches of rainfall:

$f(x)=3(x-2)+4$

To find the average rate of change between the 2nd year and the 6th year.

Solution:

The average rate of change between interval $[a,b]$ is given as :

$\frac{f(b)-f(a)}{b-a}$

For the given function we need to find the average rate of change between 2nd year and 6th year. $[2,6]$

So, we have:

$f(2)=3(2-2)+4=3(0)+4=4$

$f(6)=3(6-2)+4=3(4)+4=12+4=16$

Thus, average rate of change will be:

$\frac{f(6)-f(2)}{6-2}$

⇒ $\frac{16-4}{6-2}$

⇒ $\frac{12}{4}$

⇒ $3$

Thus, the average rate of change of rainfall in the rainforest between 2nd year and 6th year = 3 inches

8 0

3 years ago

Which expression represents the number of feet that are in x yards?

MAXImum [283]

Which expression represents the number of feet that are in x yards?

The conversion fact is 3 feet = 1 yard.So

1 yard = 3 feet
2 yards = 2(3 feet)
3 yards = 3( 3 feet)

Thus, x yards would equal 3x feet....

Answer: C. 3x

5 0

2 years ago

Read 2 more answers

Suppose we want to choose 5 objects, without replacement, from 13 distinct objects. (a) How many ways can this be done, if the o

Arisa [49]

Answer:

A. 1, 287 ways

B. 154,440 ways

Step-by-step explanation:

A. We want to choose 5 objects from a total 13, without considering the order in which they are chosen.

The correct way to do this is by using the combination formula since order is not considered;

Thus we have ; 13 C 5 read as 13 combination 5;

Mathematically, n C r is ; n!/(n-r)!r!

Thus, we have ;

13!/(13-8)!8! = 13!/5!8! = 1,287 ways

B. By considering order, we shall be using the permutation formula;

Mathematically n P r = n!/(n-r)!

Read as n permutation r;

Using the numbers involved, we have ; 13 P 5

= 13!/(13-5)! = 13!/8! = 154,440 ways

8 0

2 years ago

You deposit $5000 in a bank account that pays 3.5% annual

miskamm [114]

Answer:

Its A i just took the test

Step-by-step explanation:

6 0

2 years ago