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3 years ago

The equation of the line through (3,-4) with slope 2/3 is?

Mathematics

1 answer:

alexira [117]3 years ago

6 0

E maybe not certain that it is correct, hope it helps even tho i might be wrong

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Help me pls :((((((((((((((((((( /

AveGali [126]

1= -72 ( negative 72)

3 0

3 years ago

A hot-air balloon is 140 ft140 ft above the ground when a motorcycle (traveling in a straight line on a horizontal road) pass

luda_lava [24]

Answer:

Step-by-step explanation:

Given

Balloon velocity is 14 ft/s upwards

Distance between balloon and cyclist is 140 ft

Velocity of motor cycle is 88 ft/s

After 10 sec

motorcyclist traveled a distance of $d_c=88\times 10=880 ft$

Distance traveled by balloon in 10 s

$d_b=14\times 10=140 ft$

net height of balloon from ground =140+140=280 ft[/tex]

at $t=10 s$

distance between cyclist and balloon is $z=\sqrt{280^2+880^2}$

$z=923.47 ft$

now suppose at any time t motorcyclist cover a distance of x m and balloon is at a height of h m

thus $z^2=(88t)^2+(14t+140)^2$

differentiating w.r.t time

$\Rightarrow z\frac{\mathrm{d} z}{\mathrm{d} t}=14\cdot \left ( 14t+140\right )+88\cdot \left ( 88t\right )$

$\Rightarrow at\ t=10 s$

$\Rightarrow \frac{\mathrm{d} z}{\mathrm{d} t}=\frac{14\cdot \left ( 14t+140\right )+88\cdot \left ( 88t\right )}{z}$

$\Rightarrow \frac{\mathrm{d} z}{\mathrm{d} t}=\frac{14\times 280+88^2\times 10}{923.471}$

$\Rightarrow \frac{\mathrm{d} z}{\mathrm{d} t}=\frac{81,360}{923.471}=88.102\ ft/s$

3 0

3 years ago

Factor completely n4-1

allochka39001 [22]

N4-1 (n^2 +1)(n+1)(n-1)

4 0

3 years ago

For which of these does correlation most likely imply causation?

Tema [17]

Answer:B

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A farmer recently sold a large plot of land. The sale decreased his total acreage by 8%. Let t be the original acreage. Find t

vlada-n [284]

Answer:

D. 0.92t, is indeed a correct answer, but probably B or E are not correctly written. The second correct way is t - 0.08t.

Step-by-step explanation:

If the farmer recently sold 8% of the original acreage of his plot and t is the original acreage, therefore:

8% = 0.08

Thence, the expressions to describe two ways to find the new acreage are:

t - 0.08t

t - 0.08t = 0.92t

D. 0.92t, is indeed a correct answer, but probably B or E are not correctly written. The second correct way is t - 0.08t.

5 0

3 years ago