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
sweet [91]
3 years ago
13

Which of the following xpressions is equivalent to -1/4 - 5/3? -1/4 + (-5/3) or - 1/4 + 5/3?

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
5 0
-1/4 + (-5/3)

When there is no number between a grouping symbol and a + or - sign, by default you can multiply the contents in the group by 1 to get rid of the grouping symbols.
You might be interested in
6(x + 3) =6x + 18 <br> is what kind of property?
alisha [4.7K]

Answer:  Distributive Property of Multiplication.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A theme is
mezya [45]
Answer is b hope it helps
5 0
2 years ago
Read 2 more answers
It is said that sufferers of a cold virus experience symptoms for 7 days. However, the amount of time is actually a normally dis
AlexFokin [52]

Answer:

a) 0.18% of cold sufferers experience fewer than 4 days of symptoms

b) 64.40% of cold sufferers experience symptoms for between 7 and 10 days.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 7.5, \sigma = 1.2

a. What proportion of cold sufferers experience fewer than 4 days of symptoms?

This is the pvalue of Z when X = 4. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{4 - 7.5}{1.2}

Z = -2.92

Z = -2.92 has a pvalue of 0.0018.

So 0.18% of cold sufferers experience fewer than 4 days of symptoms.

b. What proportion of cold sufferers experience symptoms for between 7 and 10 days?

This is the pvalue of Z when X = 10 subtracted by the pvalue of Z when X = 7. So

X = 10

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 7.5}{1.2}

Z = 2.08

Z = 2.08 has a pvalue of 0.9812.

X = 7

Z = \frac{X - \mu}{\sigma}

Z = \frac{7 - 7.5}{1.2}

Z = -0.42

Z = -0.42 has a pvalue of 0.3372.

So 0.9812 - 0.3372 = 0.644 = 64.40% of cold sufferers experience symptoms for between 7 and 10 days.

8 0
3 years ago
Which of the following equations is equivalent to s=πr^2h
suter [353]

Answer:

h = s / π.r²

Step-by-step explanation:

the given equation is s = π.r².h

Now if we have to calculate the value of h from the given formula then we will solve it so that h remains alone on one side of the equation.

This only possible when we divide term on both the sides by π.r²

s/π.r² = π.r².h/π.r²

h = s / π.r²

Therefore h = s / π.r² is the right option.

5 0
3 years ago
Read 2 more answers
Please answer this what is the answer to this question now
Tanya [424]

Answer:

19

Step-by-step explanation:

M is the center of the triangle, means that MR=MQ=PM

and M is the in center of the triangle=MS=MT=MU=19

8 0
3 years ago
Other questions:
  • HELP PLZ I WILL GIVE BRAINLIEST! Cherries cost $4/lb. Grapes cost $2.50/ lb. You can spend no more than $15 on fruit and you nee
    10·1 answer
  • Explain the connections and parallels in finding missing side lengths and angle measures in a right triangle using the trigonome
    10·1 answer
  • HELPPPPPP PLEASEEE !
    10·1 answer
  • What can we conclude for the following linear homogeneous equation? t2y''+3ty'+y=0, t&gt;0. y1=t is a solution. By the method of
    10·1 answer
  • Find the area and perimeter of trapezoid ABCD. round your answers to the nearest tenth.
    9·1 answer
  • Translate the following phrase into an algebraic expression. Do not simplify. Use the variable names "x" or "y" to describe the
    8·1 answer
  • Elan surveyed a random sample of 65 students at his high school. He asked them which subject is their first class on Mondays. Th
    7·2 answers
  • (b) 3 - 2w 29<br> What is the answer
    12·1 answer
  • I got 4 minutes people!​
    5·1 answer
  • All the real zeros of the given polynomial are integers. Find the zeros.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!