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
Umnica [9.8K]
3 years ago
13

2 1/4x + (4 1/3x − 7 4/5 ) ÷ 2 3/5

Mathematics
1 answer:
o-na [289]3 years ago
4 0

Answer:

1/4*(9x+130x-234/35

Step-by-step explanation:

get photomath

You might be interested in
23. The pilot of a small private plane can look forward and see the control tower for a small airstrip.
Alex73 [517]

Answer:

Altitude of the plane is 0.5 miles.

Step-by-step explanation:

From the figure attached,

An airplane A is at height h miles observes a small airstrip at D and a factory at F, 4.8 miles apart from D.

Angle of depressions for the airstrip is 13.1° and the factory is 4.1°.

We have to calculate the airplane's altitude h.

From ΔABF,

tan4.1 = \frac{AB}{BF}=\frac{h}{(x+4.8)}

h = 0.07168(x + 4.8) -----(1)

From ΔABD,

tan13.1 = \frac{h}{x}

h = 0.2327x -----(2)

From equation (1) and (2),

0.07168(x + 4.8) = 0.2327x

0.2327x - 0.07168x = 4.8×0.07168

0.161x = 0.344

x = \frac{0.344}{0.161}=2.14 miles

From equation (2),

h = 0.2327×2.137

h = 0.4972 miles

h ≈ 0.5 miles

Therefore, 0.5 miles is the altitude of the plane.

6 0
3 years ago
An international polling agency estimates that 36 percent of adults from Country X were first married between the ages of 18 and
alukav5142 [94]

Answer:

(B) 0.2843

Step-by-step explanation:

Let d be the difference in proportions from Country X and Country Y who were first married between the ages of 18 and 32.

Then hypotheses are

H_{0}: d=0.15

H_{a}: d<0.15

Test statistic can be found using the equation

z=\frac{p1-p2-0.15}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}} where

  • p1 is the sample proportion of Country X (0.36)
  • p2 is the sample proportion of Country Y (0.26)
  • p is the pool proportion of p1 and p2 (\frac{60*0.36+50*0.26}{50+60}=0.31)
  • n1 is the sample size of adults from Country X (60)
  • n2 is the sample size of adults from Country Y (50)

Then z=\frac{0.36-0.26-0.15}{\sqrt{{0.31*0.69*(\frac{1}{60} +\frac{1}{50}) }}} ≈ 0.5646

p-value of test statistic is ≈ 0.2843

p-value states the probability that the difference in proportions between a random sample of 60 adults from Country X and a random sample of 50 adults from Country Y who were first married between the ages of 18 and 32 is at least 0.15

3 0
3 years ago
Which equation gives the length of an arc, s, intersected by a central angle of 3 radians in a circle with a radius of 4 in.?
kirill115 [55]

Answer:

12 in

Step-by-step explanation:

the arc length formula is s = rФ, where Ф is the central angle in radians.

Here, the arc length is s = (4 in)(3 radians) = 12 in

3 0
3 years ago
Given the graph of a degree 3 polynomial below, complete the table of values for either the x-value of a zero, or the multiplici
leva [86]

The roots or zeros of a polynomial are the points it crosses the x-axis.

The roots of the polynomial in order from least to greatest are -5, 0 and 5

From the graph (see attachment), we have the following highlights

  • <em>The graph cross the x-axis at x = -5</em>
  • <em>The graph cross the x-axis at x = 0</em>
  • <em>The graph cross the x-axis at x = 5</em>

The points at which the graph crosses the x-axis are the roots of the graph.

So, the roots are: -5, 5 and 5

Read more about the roots of a polynomial at:

brainly.com/question/7921963

8 0
2 years ago
Determine the next three terms in the following sequence:<br><br> 1, 2, 5, 10, ____, ____, ____,...
goblinko [34]

Add all of the numbers by using an odd number.

1+1= 2

2+3= 5

5+5=10

10+7= 17

17+9= 26

26+11= 37

Answer:1 , 2, 5, 10, 17, 26, 37

8 0
3 years ago
Other questions:
  • Please help!! Will mark first answerer brainiest​!! Thank you so much!!
    6·1 answer
  • PLZZZZZZZZZZZZZ HELP ASAP FOR THE FIRST ONE WHO ANSWERS WILL GET BRAINIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    7·2 answers
  • I will give brainliest for the correct answer!
    11·1 answer
  • Jazzy Signs pays $5 for materials to build their wooden signs. They sell each sign for $36.
    6·2 answers
  • WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST AND CORRECT PLEASE EXPLAIN WHY YOU ARE CORRECT
    11·1 answer
  • On the diagram, two angles (&lt;1 and &lt;2) formed by the road, and the borders are congruent.
    13·2 answers
  • Determine which number has a greater magnitude."<br><br> 7 and -8
    13·2 answers
  • Alexis loves to work out on the treadmill. On Monday, she ran 1.52 miles. On Tuesday she ran 0.75 miles. On Wednesday she ran 2.
    11·1 answer
  • One Solution, Infinite Solutions, No Solution are the three options for both graphs
    12·1 answer
  • Marsha earn $25 per hour up to 36 hours; after this,she is paid double time. In one particular week she earned $1550.00 .how man
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!