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kupik [55]
3 years ago
10

Please help :( I will mark brainliest.

Mathematics
1 answer:
baherus [9]3 years ago
7 0

Answer:

The value of x is 29.

Step-by-step explanation:

→ The angles arent congruent, they are supplementary.

→ Supplementary angles equals 180 degrees.

→ The equation looks look:

2x - 10 + 4x + 16 = 180

→ Let's solve the equation.

2x - 10 + 4x + 16 = 180 \\ 6x + 6 = 180 \\  \frac{  \:  \:  \:  \:  \: - 6 =  - 6}{ \frac{6x}{6} =  \frac{174}{6}  }  \\ x = 29

→ Therefore, the value of x is 29.

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I think this is what you want to do

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Hope this helps out dude!

Step-by-step explanation:

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2 years ago
A lighthouse is built on an exposed reef, 4.5 miles off-shore. The shoreline is perfectly straight, and a town is located 6 mile
Alisiya [41]

Answer: 3.94 hours

Step-by-step explanation:

From the question, the following parameters are given:

Distance offshore = 4.5 miles

Distance downshore = 6 miles

Speed when running = 3.4 mph

Speed with boat = 1.8 mph

distance of boat rowing = sqrt(4.5^2 + x^2)

Where

Speed = distance/time

Time = distance/speed

Time = distance of boat rowing/1.8

distance of running = 6 - x

Time = (6-x)/3.4

total travel time

t = sqrt(4.5^2 + x^2)/1.8 + (6 - x)/3.4

dt/dx = x/(1.8×sqrt(4.5^2 + x^2) - 1/3.4

d^2t/dx^2 = +ve at any x

x is at its minimum when dt/dx=0

x/(1.8×sqrt(4.5^2 + x^2) = 1/3.4

x = 6/sqrt(253) × 4.5 = 1.697 miles

Substitute x in

t = sqrt(4.5^2 + x^2)/1.8 + (6 - x)/3.4

We obtaine

t = sqrt(4.5^2 + 1.697^2)/1.8 + (6 - 1.69)/3.4

t = 2.672+ 1.266 = 3.94 hours

7 0
2 years ago
Which is an equation in point-slope form for the given point and slope?
Kisachek [45]

The point-slope form: y-y_1=m(x-x_1)

Q2.

(1,\ -7)\to x_1=1,\ y_1=-7\\m=1\\\\y-(-7)=1(x-1)\\\\y+7=(x-1)

Q3.

(5,\ 9)\to x_1=5,\ y_1=9\\m=2\\\\y-9=2(x-5)

Q4.

y=mx+b\\\\(0,\ 1)\to b=1\\\\y=mx+1

The formula of a slope: m=\dfrac{x_2-x_1}{y_2-y_1}

((-2,\ 4)\to x_1=-2,\ y=4\\(2,\ -2)\to x_2=2,\ y_2=-2\\\\m=\dfrac{-2-4}{2-(-2)}=\dfrac{-6}{4}=-1.5

y=-1.5x+1

8 0
2 years ago
To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were
Andrei [34K]

Answer:

2400 people

Step-by-step explanation:

Let x be the number of people who had a swimming pool in the population of 10,000,

Thus, the ratio of people who had swimming pool to the total population = \frac{x}{10000}

Since, out of 250 people 60 had swimming pool,

So, the ratio of the people who had swimming pool to the total population = \frac{60}{250}

\because \frac{x}{10000}=\frac{60}{250}

\implies 250x=600000

\implies x=\frac{600000}{250}=2400

Hence, 2400 people in the city might one expect to have a swimming pool.

First option is correct.

8 0
3 years ago
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