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UkoKoshka [18]
3 years ago
11

What is the error in -1.75+-1+4.25+3.75+1+ -4.75+2=18.5

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0

Answer:

they don't respect the signs

Step-by-step explanation:

when you have a problem like the one above you have to put parentheses to the negative numbers either to add or subtract them, there is where the sign rule comes in

Dmitrij [34]3 years ago
5 0

Answer:

3.5

Step-by-step explanation:

-1.75+(-1)+4.25+3.75+1+(-4.75)+2

-1.75-1+4.25+3.75+1-4.75+2

-2.75+4.25+3.75+1-4.75+2

1.5+3.75+1-4.75+2

5.25+1-4.75+2

6.25-4.75+2

1.5+2

3.5

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Mary is preparing for her birthday party , and she needs to give sweets to all her 10 friends who are invited . To do this , she
hram777 [196]

Answer:

Since each bag has 9strawberries and lemon she gives out 10 strawberries and lemon so she remains with 9 and a quarter bags .

Step-by-step explanation:

Remember each bag contains 9 so she has to pick either one strawberry or a lemon so in the 9th bag she remains with 8 candies.

8 0
3 years ago
What is the degree of the monomial 9xy³z⁷
xxMikexx [17]

Answer:

the degree of the monomial is 11

Step-by-step explanation:

x = 1

y^3 = 3

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5 0
4 years ago
Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people a
Vanyuwa [196]

Answer:

The probability is 0.9938

Step-by-step explanation:

In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.

To calculate this, we use the z score.

Mathematically;

z = (mean - value)/(standard deviation/√N)

From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)

Let’s plug these values;

z = (125-123)/(9.6/√144) = 2.5

Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables

P(z<2.5) = 0.9938

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3 years ago
According to cbs money watch, the average monthly household cellular phone bill is $100. suppose monthly household cell phone bi
iren2701 [21]
<span>The probability that a randomly selected monthly cell phone bill is more than $127 is given by

P(X\ \textgreater \ 127)=1-P(X\ \textless \ 127) \\  \\ =1-P\left(z\ \textless \  \frac{127-100}{11.35} \right)=1-P(z\ \textless \ 2.38) \\  \\ =1-0.99132=0.00868</span>
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3 years ago
Write an equation to represent the direct proportional relationship between the amount of gratuity (9) received by a room servic
AleksandrR [38]

Oh wait this is confusing.. i think somebody asked this question and got it answered

so search it up on here

3 0
3 years ago
Read 2 more answers
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