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
Harrizon [31]
3 years ago
9

PLEASE HELP..MATH 8TH GRADE​

Mathematics
2 answers:
jolli1 [7]3 years ago
8 0

Answer. z = ± √10 = ± 3.1623

Dmitriy789 [7]3 years ago
4 0
Z = -16 the steps are in the photo

You might be interested in
Evaluate the following algebraic expression, if (x = 5, y = 3)<br> x² +9y - 5
gladu [14]

Answer: 47

Step-by-step explanation:

simply substitute the constants with 5 and 3.

(5)^2 + 9(3) - 5 = 47

3 0
3 years ago
Read 2 more answers
What Is the value of x
SCORPION-xisa [38]

Answer:

15

Step-by-step explanation:

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csf%2010%2B2x%3D4" id="TexFormula1" title="\sf 10+2x=4" alt="\sf 10+2x=4" align="absmiddle"
Pachacha [2.7K]
10 + 2x = 4
-10
2x = -6
/2
x = -3

Answer: x = -3
4 0
1 year ago
Read 2 more answers
In History, you earned an exam score of X-85 where the exam average was μ-65 with a standard deviation of σ-5. In Biology, you e
topjm [15]

Answer: D. History

Step-by-step explanation:

To answer this question, we need to use the z-score formula written below:

\frac{x-pop. mean}{stan. devi.}

Now we'll just plug in the numbers and solve.

History:

\frac{85-65}{5}  = 4

Biology:

\frac{90-85}{10} =0.5

As we can see, history wields a higher z-score than biology, thus leaving us with option D. History

4 0
3 years ago
Given f(x) = -3x + 21, find x when f(x) = 6.
Ainat [17]

Answer:

x = 5

Step-by-step explanation:

Given

f(x) = - 3x + 21 and f(x) = 6, then equating gives

- 3x + 21 = 6 ( subtract 21 from both sides )

- 3x = - 15 ( divide both sides by - 3 )

x = 5

3 0
3 years ago
Other questions:
  • Cory earns 52.50 in 7 hours. find the unit rate
    10·2 answers
  • Find the distance between the points with coordinates (5, 7) and (-3, 1)
    5·1 answer
  • Jared took a math quiz last week he got 12 out of 16 problems correct which percentage did Jared get correct
    8·2 answers
  • What is the unit for the volume of a plastic block
    13·1 answer
  • How do you do this mathematics problem D-3/5=5/8
    15·1 answer
  • What’s the correct answer
    11·1 answer
  • If z is a positive integer, does 4+3(2z-5) represent a number that is greater than ,less than,or equal to 2(3z-4)?
    10·1 answer
  • A circle is centered at the point (-7, -1) and passes through the point (8, 7).
    9·1 answer
  • Polynomials
    8·1 answer
  • I give brainliest if the answer is correct
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!