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
nydimaria [60]
3 years ago
9

Can I get help with this please

Mathematics
1 answer:
drek231 [11]3 years ago
3 0

Answer:

3)  1 5/6 mi

4)  a. 4 cm, 6 ft

    b. 6.4 cm, 9.6 ft

    c. same as part a

Step-by-step explanation:

3) Each of the given distances appears twice in the sum of side measures that is the perimeter. Hence by walking the perimeter twice, Kyle walks each of the given distances 4 times. His total walk is ...

  4×1/3 + 4×1/8 = 4/3 + 4/8

  = 1 1/3 + 1/2 = 1 2/6 + 3/6

  = 1 5/6 . . . . . miles

___

4) Since the figure is rectilinear (all angles are right angles, and all sides are straight lines), the sum of partial dimensions in one direction is equal to the whole dimension in that direction.

a. 8 cm = 4 cm + x

  8 cm - 4 cm = x = 4 cm

The distance in the room is ...

  (4 cm)×(1.5 ft/cm) = 6 ft

b. 10.3 cm = 3.9 cm + y

  10.3 cm - 3.9 cm = y = 6.4 cm

The distance in the room is ...

  (6.4 cm)×(1.5 ft/cm) = 9.6 ft

c. The answer to part b was obtained in the same way as the answer to part a.  The unknown dimension is the difference of given dimensions. The actual length in the room is the model length multiplied by the inverse of the scale factor.

You might be interested in
A box has 1 red marble, 3 blue marbles, and 4 green marbles. Maya draws a blue marble randomly from the box, replaces it, and th
lakkis [162]

Answer:

the answer is 4

Step-by-step explanation:

1,3,and 4.....1+3+4=8

8÷2= 4

3 0
3 years ago
What is the product of 84,90?
MAVERICK [17]
84•90 is 7,560.

ndheisn
3 0
3 years ago
Help me with this one please
galben [10]

Answer:

I think the top and the two in the middle but I can't really see it's a blurry picture

7 0
3 years ago
Calls to a customer service center last on average 2.8 minutes with a standard deviation of 1.4 minutes. An operator in the call
Natali5045456 [20]

Answer:

The expected total amount of time the operator will spend on the calls each day is of 210 minutes.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

n-values of normal variable:

Suppose we have n values from a normally distributed variable. The mean of the sum of all the instances is M = n\mu and the standard deviation is s = \sigma\sqrt{n}

Calls to a customer service center last on average 2.8 minutes.

This means that \mu = 2.8

75 calls each day.

This means that n = 75

What is the expected total amount of time in minutes the operator will spend on the calls each day

This is M, so:

M = n\mu = 75*2.8 = 210

The expected total amount of time the operator will spend on the calls each day is of 210 minutes.

6 0
3 years ago
Hewp..Pls
timofeeve [1]

Answer:

2y+4x=12

2*1+4*8=12

2+32=12

35=12

7 0
3 years ago
Other questions:
  • Shanelle already has $137 from babysitting. She needs at least $625 for a new tablet. Which inequality best represents this scen
    13·1 answer
  • Order the rational numbers 0.69,13/20,1/2,0.6,17/25 from least to greatest
    10·2 answers
  • Write two expressions whose sum is x-3/x+2, I need help it is confusing for me.
    7·1 answer
  • Parallel perpendicular or neither<br> Y=3x-7<br> Y=3x+1
    12·2 answers
  • 27x^3−64divided by3x−4
    14·2 answers
  • 10% of the time Spencer runs in pre-athletics he comes in first place. If he runs 30 times, how many times is he in first place?
    13·1 answer
  • Express the tangent of ∠U as a ratio of the given side lengths.
    7·2 answers
  • Let f(x) = -5x - 4 and g(x) = 6x - 7. Find f(x) + g(x)
    15·1 answer
  • Put these numbers in order of their distance from 0 on the number line, starting with the smallest distance. -26,-12.7,-9/2,2/10
    6·1 answer
  • Helpppp meee pleaseeeeeeeeee!!!’
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!