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3 years ago

Please help with my math!!!

Mathematics

2 answers:

kolbaska11 [484]3 years ago

8 0

Your on ur own sorry pla

AnnyKZ [126]3 years ago

4 0

Which problem do you need help on

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Round 1.07 to the tenths place.

galben [10]

Answer: 1.10
Work: 5 or more raise the next digit, 4 or less keep it

5 0

3 years ago

Hi I have no idea how to do this question :)

erik [133]

Answer:

A. 36

Step-by-step explanation:

Because the two angles at the bottom of both the triangles are congruent, the two triangles are similar. Therefore, the corresponding side lengths of the triangles must be proportional to each other

if the area of a triangle is hb/2,

(with h=length of height, b=length of base)

the height of the first triangle is:

25 = 10h/2

50 = 10h

h=5

you can write ratios representing the proportions of the two triangles:

5/x = 10/12 (with x=height of second triangle)

x=6

then find the area of the second triangle with the height (6) and base (12)

(6*12)/2 = 36

7 0

2 years ago

A plane flew 720 mi with a steady 30 mi/h tailwind. The pilot then returned to the starting point, flying against that same wind

NNADVOKAT [17]

Answer:

Plane's speed is 150 miles/hour

Step-by-step explanation:

Let the plane's airspeed be x

Speed of wind is 30 miles/hour

When a plane flew with the wind , Speed = (x+30)

So, the speed plain with wind on going = (x+30)

Since we are given that on returning plane fly against the wind .

So,When a plane flew against the wind , Speed = (x-30)

So, the speed plain against wind on returning = (x-30)

Distance = 720 miles .

$Time = \frac{Distance}{Speed}$

So, time on going $=\frac{720}{(x+30)}$

Time on returning $=\frac{720}{(x-30)}$

Now we are given that the total time for the whole trip (going + returning) = 10 hours.

So, $\frac{720}{(x+30)}+\frac{720}{(x-30)}=10$

$\frac{720x-21600+720x+21600}{(x+30)(x-30)}=10$

$720x-21600+720x+21600=10(x+30)(x-30)$

$720x+720x=10(x+30)(x-30)$

$1440x=10(x^2 -[30]^2)$

$144x=x^2 -900$

$x^2-144x -900=0$

$x^2-150x+6x -900=0$

$x(x-150)+6(x -150)=0$

$(x-150)(x+6)=0$

$x= 150,x= -6$

So, the plane's speed is 150 miles/hour

4 0

3 years ago

Simplify<br> 5^3/5^7 <br> Leaving your answer in index form

Delicious77 [7]

Answer:

5^-4

Step-by-step explanation:

5^3/5^7=5^(3-7)=5^-4

6 0

3 years ago

Miller Nolan

emmainna [20.7K]

40$ is the answer, 20+10+10 , hope it helpeddd

8 0

3 years ago

Read 2 more answers