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
Alik [6]
3 years ago
9

Can some one pls help me with these questions it is really argent

Mathematics
1 answer:
ahrayia [7]3 years ago
7 0
Number 5 i dont know. i got 8.85×10^6, but its not one of the choices. number 6 i got A.12.57
You might be interested in
Which answer correctly estimates the quotient of 8.39 ÷ 1.22??
Flauer [41]
The answer is 6.87704918
6.9 rounding to the tenth
6.88rounding to the hundredth
6.877rounding to the thousandth <span />
8 0
3 years ago
A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121. Incorrect Round
Neko [114]

Answer:

The z-score for a data value of 121 is -2.29.

Step-by-step explanation:

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 = 137, \sigma = 7

Find the z-score for a data value of 121.

This is Z when X = 121. So

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

Z = \frac{121 - 137}{7}

Z = -2.29

The z-score for a data value of 121 is -2.29.

4 0
3 years ago
Read 2 more answers
Find x:<br><br><br><br><br> explain if you can!
Sergio039 [100]

Answer:

x is 97

Step-by-step explanation:

the interior angles have to equal 180 and the exterior angles have to come to 360 degrees

so you already know 23 to find the one by the 106 degree you use the linear pair postulate ( angles on a straight line will equal 180) so 180-106 equals 74. Now you have 2 of the three interior angles. To find the third you take 180 - 74 - 23 which equals 83 then you can use the linear pair postulate again and take 180-83 to get your answer for x which equals 97

4 0
3 years ago
Find the angle of depression from the top of a lighthouse, 260 feet above water to a ship that's 270 feet offshore?
expeople1 [14]

Answer: OPTION C.

Step-by-step explanation:

Observe the triangle ABC attached.

Notice that the angle of depression is represented with \alpha.

Knowing that the top of a lighthouse is 260 feet above water and the ship is 270 feet offshore, you can find the value of  \alpha by using arctangent:

\alpha= arctan(\frac{opposite}{adjacent})

In this case you can identify that:

opposite=260\\adjacent=270

Therefore, substuting values into  \alpha= arctan(\frac{opposite}{adjacent}), you get that the angle of depression is:

 \alpha= arctan(\frac{260}{270})\\\\\alpha=43.92\°

4 0
3 years ago
Factor completely
svet-max [94.6K]

Answer:

B.) 2(5x-4)(x+1)

Step-by-step explanation:

10x^2+2x-8

= 2(5x^2 + x - 4)

= 2(5x^2 + 5x - 4x - 4)

= 2[5x(x + 1) - 4(x + 1)]

= 2(5x-4)(x+1)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Write an explicit formula for the sequence -13,-6,1,8
    13·1 answer
  • Jeff has $25 he spends $10.81 include tax to buy a new DVD.He need to set aside $10 to pay for lunch next week. If peanuts cost
    12·2 answers
  • A pitcher's earned run average is calculated by the formula E = 9R/1, where E represents the
    14·2 answers
  • What number has 42 tens and 16ones
    12·2 answers
  • 25 points!!! Write the coordinates of the point that is shown in the equation. y + 5 = -2(x - 4)
    10·1 answer
  • Use inverse operations to solve the equation <br><br> k + 7.2 = 3.4
    6·1 answer
  • Write in slope-intercept form an equation of a line that passes through the point (-2, 7) and m= -4.
    13·1 answer
  • 1.75 cups of flour makes 12 muffins. If Rob wants to make a batch of 60 muffins, how much flour will he need? please I'm so bad
    10·1 answer
  • write each of the following fraction as equivalent fractions with a denominator of 10 a. 1/2 b. 1/4 c. 3/30 d. 12/30​
    5·1 answer
  • Which is the explanation for the Aurora Borealis?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!