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3 years ago

Someone plz answer this problem r + (-5) < -3.

Mathematics

2 answers:

telo118 [61]3 years ago

7 0

Answer: r<2

Step-by-step explanation:

r-5+5<-3+5

Cancel out,

r<2

eimsori [14]3 years ago

3 0

Answer:

r < 2

Step-by-step explanation:

r + (-5) < -3

Adding a negative number is the same as subtracting the number.

r - 5 < -3

Add 5 to both sides.

r < 2

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Need help asap plzz

Nadusha1986 [10]

Answer:

Step-by-step explanation:

5z >or= -75

z >or= -75/5

z>or= -15

ans is D

4 0

3 years ago

johnathan class has 30 boys of the students in his class 60% are girls how many girls are in johnathans class

Gekata [30.6K]

Answer:

45 girls

Step-by-step explanation:

If 60% of the class is girls then 40% of the class is boys.

30 boys are in the class, meaning that 40% of the class comprises those 30 boys

First, we need the total number of class members: 30/x = 40/100 -> 40x=3000 -> x=3000/40 -> x=75

Now that we know the total class members, at 75, we can calculate the number of girls in the class. You can do this:

0.6*75=45

60/100=x/75 and solve for x

5 0

4 years ago

SOMEBODY, ANY BODY, HELP ME WITH THIS PROBLEM PLS!!!!!

Crazy boy [7]

Because I wanna say sorry if I'm wrong

5 0

3 years ago

Read 2 more answers

There are 12 students in a classroom, including the triplets Joey, Chloe, and Zoe. If 3 of the 12 are randomly selected to give

lesya692 [45]

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.

The size of the sample space is the total number of possible outcomes

The event space is the number of outcomes in the event you are interested in.

P=size of the event space/size of the sample space

step 1

find the probability that Joey will be first

size of the sample size=12

size of the event space=1

P=1/12

step 2

find the probability that Chloe will be second

size of the sample size=12-1=11

size of the event space=1

P=1/11

step 3

find the probability that Zoe will be third

size of the sample size=11-1=10

size of the event space=1

P=1/10

step 4

Find the probability that Joey will be first, Chloe will be second, and Zoe will be third

P=(1/12)*(1/11)*(1/10)-----> P=1/1320-----> 0.00075------> 0.076%

the answer is

the probability that Joey will be first, Chloe will be second, and Zoe will be third is 0.00075 (0.076%)

4 0

4 years ago

A candle is lit and the length of the burning candle changes at a constant rate of -1.6 inches per hour. 3 hours after the candl

Gnesinka [82]

Answer: The length of the candle was 13.5 inches before it was lit.

Step-by-step explanation:

Let the length of candle in the beginning be c.

Constant rate of change in length of candle= -1.6 inches per hour

Since rate of change is constant so the length of candle can be represented by a linear function [Linear function has constant rate of change.]

Linear function : f(x)= mx+c , where x= independent variable.

m= constant rate of change and c= initial value of function.

Let x = Number of hours after the candle was lit.

Put m= -1.6 , x= 3 and f(x)= 8.7 , we get

$8.7=-1.6(3)+c\\\\ 8.7= -4.8+c\\\\ c=8.7+4.8=13.5$

Hence, the length of the candle was 13.5 inches before it was lit.

5 0

4 years ago