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
sergij07 [2.7K]
3 years ago
14

-2+10z=28 what is z?

Mathematics
2 answers:
valentina_108 [34]3 years ago
7 0
Answer: a= 3

Why? -2+10z=28 Add 2 to both sides 28+2=30
10z=30 divided 10 by both sides 30/10=3
Z=3
Hope this helps :D
vagabundo [1.1K]3 years ago
3 0
Z would be 3 because 10*3 is 30 and 30-2 would be 28 :)
You might be interested in
16.4.57 Question Help A box contains eighteen $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill You bl
Rudiy27

Answer:

$ 7.7

Step-by-step explanation:

Given,

There are 18 $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill,

Total number of bills = 18 + 10 + 8 + 3 + 1 = 40,

\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}

Thus,

The probability of $ 1 = \frac{18}{40}

The probability of $ 5 = \frac{10}{40}

The probability of $ 10 = \frac{8}{40}

The probability of $ 20 = \frac{3}{40}

The probability of $ 100 = \frac{1}{40}

If a bill is selected randomly,

The expected value of the bill

=\frac{18}{40}\times 1+\frac{10}{40}\times 5+\frac{8}{40}\times 10+\frac{3}{40}\times 20+\frac{1}{40}\times 100

=\frac{18+50+80+60+100}{40}

=\frac{308}{40}

= $ 7.7

5 0
3 years ago
A recent study found that the average length of caterpillars was 2.8 centimeters with a
pogonyaev

Using the normal distribution, it is found that there is a 0.0436 = 4.36% probability that a randomly selected caterpillar will have a length longer than (greater than) 4.0 centimeters.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, the mean and the standard deviation are given, respectively, by:

\mu = 2.8, \sigma = 0.7.

The probability that a randomly selected caterpillar will have a length longer than (greater than) 4.0 centimeters is <u>one subtracted by the p-value of Z when X = 4</u>, hence:

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

Z = \frac{4 - 2.8}{0.7}

Z = 1.71

Z = 1.71 has a p-value of 0.9564.

1 - 0.9564 = 0.0436.

0.0436 = 4.36% probability that a randomly selected caterpillar will have a length longer than (greater than) 4.0 centimeters.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

4 0
2 years ago
Write an algebraic expression to represent each verbal expression. 5 times the sum of a number and 1
11111nata11111 [884]

Answer: 5(x+1)

Step-by-step explanation:

Let the number be x

Sum of number and 1 is x+1

5 times the sum is 5(x+1)

3 0
3 years ago
Simplify the expression<br> 4 + 2(6 + 1) +5(5-2)
Ainat [17]

Answer:

a number

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Would really love some help, 20 points
Vilka [71]

Answer:

x=23.78 cm

Step-by-step explanation:

As this problem is involving the adjacent and hypotenuse sides, we will be using the cosine function

We can setup an equation as follows

cos(18)=\frac{x}{25}

We can now solve for x

x=25cos(18)\\\\x=23.776

This rounds to

x=23.78

3 0
3 years ago
Other questions:
  • How to solve for this problem
    6·2 answers
  • Consider the solution to the linear equation. 5 (x + 6) = 50. 5 x + 30 = 50. 5 x = 20. x = 4. Which describes the inverse operat
    10·2 answers
  • Shirley is decorating the gym for a party, she has 4 rolls of blue streamer and 7 rolls of green streamer. if each roll of blue
    13·1 answer
  • Multiply. Write your answer in simplest form. Fast. <br> 5/12 x 4/5
    6·2 answers
  • 16. For quadrilateral ABCD, determine the most precise name for it. A(-2,3), B (9,3), C(5,6) and D(2,6). Show your work and expl
    11·1 answer
  • What is the value of z in the figure shown? 45.6 1148​
    10·1 answer
  • I need help pls...ty :)
    11·1 answer
  • Camila goes out to lunch. The bill, before tax and tip, was $9.20. A sales tax of 3% was added on. Camila tipped 19% on the amou
    14·1 answer
  • Convince Me! why are there two possible solutions is valid in this situation.
    11·2 answers
  • What stays the same no matter what location your in
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!