1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pickupchik [31]
3 years ago
14

HELP ASAP ! Explain how solving -7y > 161 is different from solving 7y > -161.

Mathematics
2 answers:
antoniya [11.8K]3 years ago
6 0

Answer:

When solving -7y > 161 your symbol will be flipped when you divide by -7 and the number will be negative. Normally you would want to have a negative variable

when solving a inequality.

In 7y > -161 the symbol will not be flipped and the number will be negative.

The difference between both equations is if y is less than or greater.

Alex Ar [27]3 years ago
5 0

Answer:

The inequalities would be different. One would be less than and the other would be greater than.

Step-by-step explanation:

The main differences between them is that the solutions that you would end up with with be completely different when you solve them.

Work:

-7y > 161\\\\\text{The variable (y) can't be negative, so you would divide -7 on both sides}\\\text{Since you're diving by a negative, the}\, (>)\text{ would flip.}\\\\y -161\\\\\text{In this one, you would just divide by 7}\\\\y>-23

They both get -23, but the inequalities would be different.

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
You might be interested in
a big cruise ship dropped anchor off the Caribbean island of antigua. the heavy anchor dropped into the water at a rate of 2.5 m
AysviL [449]

Falling at the rate of 2.5 m/s for 45 seconds, the anchor fell

                                     (2.5 m/s) x (45 s)  =  112.5 meters .

If it wound up only 40 meters underwater, then it must have fallen

                                      (112.5 m  -  40 m)  =  72.5 meters

from its storage position on the big cruise ship, 
before it ever reached the water.

Since it was falling at the rate of  2.5 m/s, it took

                                     (72.5 m) / (2.5 m/s)  =  29 seconds

to get down to the water surface after it started dropping.

6 0
3 years ago
Please help, I need help.<br><br>I don't understand.
Lana71 [14]

Find slope of both

#1

  • (11,2)
  • (22,4)

\\ \tt\hookrightarrow m=\dfrac{4-2}{22-11}=\dfrac{2}{11}=1.8

#2

  • (0,0)
  • (5,1)

\\ \tt\hookrightarrow m=\dfrac{1-0}{5-0}=\dfrac{1}{5}=0.2

Option C is correct

7 0
2 years ago
Find the product of 9 and 583. <br><br> A. 64 <br> B. 592 <br> C. 5,247 <br> D. 5,347
Dmitry_Shevchenko [17]

Answer:

C. 5,247

Step-by-step explanation:

  1. Product = multiplication
  2. The product of 9 and 583: 9 × 583 = 5,247

I hope this helps!

7 0
3 years ago
Read 2 more answers
HELP! WILL GIVE BRAINLEST
trasher [3.6K]

Answer:

Option C: 41

Step-by-step explanation:

<ABD+<CBD=90

<ABD=8x+1

<CBD=6x+5

(8x+1)+(6x+5)=90

Combine like terms

(8x+6x)+(1+5)=90

14x+6=90

14x=90-6

14x=84

divide both sides by 14

x=6

Now we plug that value into <DBC = 6x+5

6(6)+5=

36+5

41

7 0
1 year ago
Read 2 more answers
A marine biologist monitors the population of sunfish in a small lake. He records 800 sunfish in his first year, 600 sunfish in
Colt1911 [192]

Answer:

Let's use the variable y to represent the number of years passed since the first year.

The population on the first year (y = 0) was 800

The population in the second year (y = 1) was 600.

The ratio in which the population decreased can be calculated as:

R = 600/800 = 0.75

This means that 600 is the 75% of 800, this also means that between the first year and the second year, the population decreased by the 25%

Now let's look at the ratio between the second and third year (y = 2), the population the third year was 450

Now the ratio is:

R = 450/600 = 0.75

Same as before, then we already can see that the population will decrease by 25% each year.

The generic exponential decay equation is:

f(y) = A*(1  - r)^y

where:

A = initial population, in this case, is 800

y = our variable, in this case, represents the number of years

r = the amount that decreases per each unit of our variable, this must be written in decimal form. In this case, we know that the population decreases by 25% each year, and 25% written in decimal form is 0.25

Also, (1 - r) = R, where R is the ratio we found earlier.

To do this, we just divide 25% by 100% to get (25%/100% = 0.25)

Then our equation will be:

f(y) = 800*(1 - 0.25)^y

f(y) = 800*( 0.75)^y

1) We want to predict when the population will be 200.

to do this, we set:

f(y) = 200 = 800*( 0.75)^y

and solve it for y.

(200/800) = 0.75^y

(1/4) = 0.75^y

Now we can use the relationship:

Ln(a^x) = x*ln(a)

Then let's apply Ln( ) in both sides to get

ln(1/4) = y*ln(0.75)

ln(1/4)/ln(0.75) = y = 4.8 years.

This means that 4.8 years after the first year, the population will be around 200.

2) The population in the 25 th year (this is 24 years after the first one, so we take y = 24) is:

f(24) = 800*(0.75)^(24) = 0.80

Around this point, we will have no more sunfish in the lake.

7 0
3 years ago
Other questions:
  • How to you calculate the area of regular octagon? ​
    5·1 answer
  • If f(x) = 3x^2 -2x-1 and g(x) = x^2 find (gof) (x)
    7·1 answer
  • Which expression finds the measure of an a 126 degree angle?​
    7·1 answer
  • What is the intermediate step in the form (x+a)2 = b as a result of completing the square for the following
    11·1 answer
  • Word Problem:
    12·1 answer
  • What is the slope of (4,-2)(2,4) ?
    8·1 answer
  • Find the slope (2,5) and (6,2)
    10·1 answer
  • CAN SOMEONE PLEASE HELP ME ON NUMBER 3
    12·1 answer
  • Evaluate the expression x−2×8, if x = 27.8
    6·1 answer
  • . AB and BC are two sides of a triangle. If the ratio of AB:BC is 3:4, AB = 60 and
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!