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
erastova [34]
3 years ago
8

-56z+28 is equal to what?

Mathematics
2 answers:
Svetlanka [38]3 years ago
8 0

Answer:

Factor  − 28  out of  − 56 z + 28 .

answer = − 28 ( 2 z  −  1 )

Step-by-step explanation:

Hope this helps! Have a great day!

Eddi Din [679]3 years ago
8 0

Answer:

0.5

Step-by-step explanation:

-56z + 28 = 0

28 = 56z

z = 0.5

You might be interested in
Find two points on the x-axis that are 13 units from (2, 12).​
dsp73
5 Are you good in geometry I can do this fort you if do my question about geometry
5 0
3 years ago
RSM QUESTION NEED HELP!!!!!! A pharmacist has a 13 % alcohol solution and another 18 % alcohol solution. How much of each must h
Luden [163]

Answer:

40 grams of 13% alcohol solution and 10 grams of 18% alcohol solution.

Step-by-step explanation:

13%(x) + 18%(50-x) = 14%*50g   Multiply them all

0.13x + (9-0.18x) = 7

0.13x-0.18x + 9 = 7   Simplify the equation and subtract 0.13x from 0.18x

9-0.05x = 7   Add 0.05x to each side

9 = 7+0.05x   Subtract 7 from both sides

0.05x = 2   Multiply each side by 100

5x = 200   Divide both sides by 5

x = 40

50 - 40 = 10

40 grams and 10 grams

Your welcome

4 0
3 years ago
Read 2 more answers
What is the slope is this line please?
oksian1 [2.3K]

Answer:

3/4

Step-by-step explanation:

I'm not for sure but it won't hurt to try it.

5 0
3 years ago
Read 2 more answers
Evaluate |x|+(-2x^2) for x=3<br> Answers<br> -9<br> -15<br> 21
Nikolay [14]

Hello from MrBillDoesMath!

Answer:

-15

Discussion:

We are asked to evaulate:

abs(3) + ( -2 (3)^2) =                         => as abs(3) = 3

3          + (-2*9)  =

3           - 18 =

-15    

Thank you,

MrB

8 0
3 years ago
The test to detect the presence of respiratory syncytial virus is 97% accurate for a person who has the virus and 99% accurate f
Setler79 [48]

Answer:

The probability that a randomly selected person gets incorrect result is 2.2 × 10⁻⁴

Step-by-step explanation:

The parameters given are;

The accuracy of the test for a person who has the respiratory synctial virus = 97%

The accuracy of the test for a person who does not have the respiratory synctial virus = 99%

We have;

a = TP =

b = FP

c = FN

d = TN

a/(a + c) = 0.97

d/(d + b) = 0.99

a/(a + b) = 0.97*0.0055/(0.97*0.0055 + (1 - 0.99)*(1-0.0055))

PPV = 0.349 = 34.9%

Therefore, we have;

a/(a + c) = 0.97 and

a/(a + b)  =  0.349

0.97(a + c) =0.349(a + b)

(0.97 - 0.349)a = 0.349·b - 0.97·c

a = (0.349·b - 0.97·c)0.621

b × (1 - 0.0055) = (1 - 0.97)×(1 - 0.0055)

b = 1 - 0.97 = 0.03

Similarly,

c = 1 - 0.99 = 0.01

The proportion of the population that have false positive and false negative = 0.03 + 0.01 = 0.04 = 4%

The probability that a randomly selected person gets incorrect result = 0.04×0.0055 = 0.00022.

5 0
3 years ago
Other questions:
  • Area of a triangle is 154 cm square and the sides are 3 ratio 4 ratio 5 what is the perimeter​
    15·2 answers
  • Does the following set of measurements create a triangle? 17,35, and 18<br><br> True or False
    15·2 answers
  • Please help on this...
    13·1 answer
  • If i was born in 2006 what year will i be 18
    8·2 answers
  • Something white that inside of it has flowers. Its a riddle
    15·2 answers
  • How do you simplify the following trigonometric expression:
    11·1 answer
  • Sara is studying how quickly adults tire after eating turkey. She splits a group of 20 adults into 2 groups. One group is given
    14·2 answers
  • A grocery store sells sliced turkey. the graph show shows the relationship between the weight of the sliced turkey and the total
    10·2 answers
  • My Math Integers. I'm stuck on this problem.. Someone please help? (-4)(-9) =
    14·2 answers
  • 6.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!