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3 years ago

What is x? 15(x-1)-7(x+9)=4x

Mathematics

1 answer:

Kitty [74]3 years ago

7 0

I got x = -78.75 , i included a picture of my work because it’s too difficult to put into text!

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Given: AB tangent at D, AD = OD = 4 Find: Area of the shaded region

MrMuchimi

Answer:

1.72

Step-by-step explanation:

AB tangent at D, AD = OD = 4

so triangle OAD is right angle with side of 4 and 4.

area of OAD = 1/2 * 4 * 4 = 8

Angle AOD = DAO = 45 deg.

so circular sector OCD area = area of circle O * 45/360

= pi * 4 * 4 * 45/360

= 2pi

Shade area ACD = trigangle OAD - circular sector OCD

= 8 - 2pi

= 1.72

4 0

2 years ago

Please answer! I’m desperate lol

8_murik_8 [283]

Step-by-step explanation:

A) The bus rental would be the total cost or "C". So 700=250+3m.

B) Solve with properties of equality:

700 - 250 = 250 + 3m - 250

450 = 3m

450/3 = 3m/3

150 = m

150 miles

C) Check your answer by plugging the answer into the original equation:

C = 250 + 3(150)

C = 250 + 450

C = 700

5 0

2 years ago

A circle with circumference \blue{6}6start color #6495ed, 6, end color #6495ed has an arc with a 60^\circ60

Bingel [31]

Answer:

$\Delta s = 1$

Step-by-step explanation:

The length of the arc is directly proportional to the angle of the arc, whose measure is determined by simple rule of three:

$\Delta s = \left(\frac{60^{\circ}}{360^{\circ}} \right)\cdot (6)$

$\Delta s = 1$

8 0

3 years ago

Read 2 more answers

Solve for x. Plz helppppppo

xxTIMURxx [149]

Answer:

i do not know sorry

Step-by-step explanation:

5 0

2 years ago

a hot air balloon is at a height of 2,250 feet. it descends 150 ft each minute. find its high after 6, 8, and 10 minutes

Alex73 [517]

So for this, since the rate is linear we will be using the slope-intercept form, which is y=mx+b (m = slope/rate of change, b = y-intercept)

Since the rate of change "descends 150 ft per min", the m variable is -150.

The y-intercept is, in this case, the height of the balloon at 0 mins, or the starting height. Since the balloon "is at a height of 2250 ft", the b variable is 2250.

Putting our equation together, its y = -150x + 2250.

Since time is our independent variable, plug in 6, 8, and 10 mins into the x variable to solve for their heights:

$y=-150(6)+2250\\ y=-900+2250\\ y=1350\\ \\ y=-150(8)+2250\\ y=-1200+2250\\ y=1050\\ \\ y=-150(10)+2250\\ y=-1500+2250\\ y=750$

In context, after 6 minutes the balloon is at 1,350 ft, after 8 minutes the balloon is at 1,050 ft, and after 10 minutes the balloon is at 750 ft.

8 0

3 years ago