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3 years ago

14

7×9-8+11-6 [5+2 (-3)]

1 answer:

kupik [55]3 years ago

8 0

Ok, MissWalker! Please try your best to understand this, it may get confusing.
I have solved this on a different website, and here is my solving in a picture. I hope I helped!!! :D

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A mechanic can install carburetors in 3 cars every 4 hours. At that rate, how long will it take the mechanic to install carburet

siniylev [52]

Answer:

B, (6hr. 40 min)

8 0

4 years ago

Choose 2 trapezoids and find the area using proper format

masha68 [24]

Answer:

Area of green trapezoid would be:

(length of two parallel sides × h) ÷ 2

( 5cm x 2cm) ÷ 2

= 5 square centimetres

Area of the orange trapezoid would be:

(length of two parallel sides x h) ÷ 2

(10.5 cm × 3) ÷ 2

( 31. 5) ÷ 2

(15. 75 square centimetres

NOTE: h represents height

8 0

4 years ago

A planet follows an elliptical path described by 16 x squared + 4 y squared = 64. A comet follows the parabolic path y equals x

saul85 [17]

Answer:

The comet might intersect the orbiting planet at (0, -4), $(\pm\frac{\sqrt{31}}{2},\frac{15}{4})$ .

Step-by-step explanation:

Given that, a planet follows an elliptical path described by

$16x^2+4y^2=64$ .........(1)

A comet follows the parabolic path

$y=x^2-4$

$x^2=y+4$ .........(2)

To find the intersecting point, we need to solve the above equations.

Putting $x^2=y+4$ in the equation (1)

$y+4+4y^2=64$

$\Rightarrow 4y^2+y+4-64=0$

$\Rightarrow 4y^2+y-60=0$

$\Rightarrow 4y^2+16y-15y-60=0$

$\Rightarrow 4y(y+4)-15(y+4)=0$

$\Rightarrow(y+4)(4y-15)=0$

$\Rightarrow y=-4, \frac{15}{4}$

When y = -4 , then $x^2=-4+4$ $\Rightarrow x=0$

When $y=\frac{15}{4}$ , then $x^2=\frac{15}{4}+4$ $\Rightarrow x=\pm \frac{\sqrt{31}}{2}$

The comet might intersect the orbiting planet at (0, -4), $(\pm\frac{\sqrt{31}}{2},\frac{15}{4})$ .

5 0

3 years ago

EMERGENCY! Please help. Either or both questions!!

Likurg_2 [28]

Rectangle on top is 4 units by 8 units = 32 units squared.

The half circle has radius 2, so the area is pi*2^2/2 = 4pi /2 = 2pi

Total area is 32+2pi or approx 38.28 square units, answer C

8 0

3 years ago

What is the area of the parallelogram?

Kobotan [32]

The area is aprox 24.6

5 0

3 years ago