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3 years ago

Someone who la help me no links ???

Mathematics

2 answers:

sammy [17]3 years ago

6 0

Answer:

Step-by-step explanation:

Nina [5.8K]3 years ago

6 0

Answer:

Step-by-step explanation:

y = 8x

substitute 3 for x

y = 8(3)

y = 24

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estamos construyendo una carretera que enlace los puntos a = 12 ,21 y b =(17,23) otro punto se encuentra en c =(3,9) es posible

Nadusha1986 [10]

Answer:

is not possible

Step-by-step explanation:

<u><em>The question in English is</em></u>

we are building a road that links the points a = (12 ,21) and b =(17,23) another point is in c =(3,9) it is possible that a single road allows to join these three points?

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

step 1

Find the slope ab

we have

a = (12 ,21) and b =(17,23)

substitute

$m=\frac{23-21}{17-12}$

$m=\frac{2}{5}$

step 2

Find the slope ac

we have

a = (12 ,21) and c =(3,9)

substitute

$m=\frac{9-21}{3-12}$

$m=\frac{-12}{-9}$

simplify

$m=\frac{4}{3}$

step 3

Compare slopes ab and ac

The slopes are different

That means ----> is not possible that a single road allows to join these three points

7 0

3 years ago

Felicity makes a monthly salary of $3,250.00. How much does she make in a year?

nata0808 [166]

Answer:

$39,000 a year

Step-by-step explanation:

There are 12 months in a year;

$3,250.00 * 12 = $39,000

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

8 0

2 years ago

Read 2 more answers

3. In the expression 25-5+7x3 ÷ 1, which operation should be done first?

satela [25.4K]

Answer:

division

Step-by-step explanation:

please mark me as brainlest

5 0

2 years ago

(10 pts) A four-lane freeway (two lanes in each direction) is located on rolling terrain and has 12-ft lanes, no lateral obstruc

dimulka [17.4K]

Answer:

309

Step-by-step explanation:

To determine the estimated free-flow speed

$FFS = 75.4 -f_{LW}-f_{LC} - 3.22 TRD^{0.84}$

From the table "Adjustment for lane width," which corresponds to a lane width of 12 feet. As a result, $f_{LW}$ equals 0 mi/h.

Take the meaning from the table "Adjustment for right-shoulder lateral clearance," which corresponds to 6 feet of right shoulder lateral clearance and two lanes in one direction.

The $f_{LC} = 0 mi/h$

$FFS = 75.4 -0-0-3.22 ( \dfrac{5}{6})^{0.84}$

$= 72.64 \ mi/h$

$\simeq 73 \ mi/h$

Determine the peak-hour factor

$PHF = \dfrac{V}{V_{15}\times 4} \\ \\ =\dfrac{1800}{700\times 4}\\ \\ = 0.6429$

Now, Find the heavy-vehicle adjustment factor.

$v_P = \dfrac{V}{PHF\times N \times f_{HV}\times f_P} --- (1)$

Take the value for the 15-minute passenger car equivalent flow rate from the table "LOS requirements for freeway segments" for the FFS and LOS C conditions. The free-flow speed is estimated to be 73 miles per hour

$v_p = 1735+ \dfrac{73-70}{75-70}(1775-1735)$

$v_p = 1759 \ pc/h/In$

Think about for familiar users the value of f_p = 1.00

Replace all of the values obtained in (1)

$v_p = \dfrac{V}{PHF \times N\times f_{HV}\times f_p}$

$1759 = \dfrac{1800}{0.6429\times 2 \times f_{HV}\times 1}$

$f_{HV} = \dfrac{1800}{0.6429\times 2 }\times \dfrac{1}{1759}$

= 0.795

Calculate the percentage of trucks and buses in the flow of traffic stream.

$f_{HV} = \dfrac{1}{1+P_{\tau}(E_{\tau}-1) + P_R(E_R-1)}$

Take the values from the table "Passenger car equivalent for extended highway segments" referring to trucks and buses and rolling terrains for passenger car equivalent for trucks and buses and recreational vehicles. As a result, $E_T$ has a value of 2.5 and $E_R$ has a value of 2.0.