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3 years ago

It takes 8 people yo pull a 16 ton truck how many people would it take to pull a 60 ton truck

Mathematics

2 answers:

erastovalidia [21]3 years ago

4 0

There would be 30 people pulling it. To work it out you do 16 divided by 8=2. Then you do 60 divided by 2= 30.<u />

marishachu [46]3 years ago

3 0

$8\ people\ for\ 16\ ton\ truck\\
x\ people\ for \ 60 \ ton\ truck\\\\
proportion:\\
8-16\\
x-60\\\\ cross\ multiplication\\\\
8*60=16x\\\\
480=16x\ \ \ \ | divide\ by\ 16\\\\
x=30\\\\
It\ will\ take\ 30\ people.$

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If yvaries inversely as x and y=18 when x=2, find y when x=4

Sergio039 [100]

I believe the answer would be 36.

Hope this helped you. ;}

7 0

4 years ago

There are 850 Douglas fir and Ponderosa pine trees in a section of forest bought by Karamazov Logging Co. The company paid an av

ki77a [65]

Answer:

350 Douglas fir, 500 Ponderosa pine

Step-by-step explanation:

Let f = the number of fir trees

and p = the number of pine trees.

Then, we have two conditions:

(1) f + p = 850

(2) 300f + 225p = 217 500

(3) p = 850 -f Subtracted f from each side of (1)

(4) 300f + 225(850 - f) = 217 500 Substituted (3) into (3)

300f + 191 250 - 225f = 217 500 Distributed 225

75f + 191 250 = 217 500 Distributed the 7

75f = 26 250 Subtracted 191 250 each side

(5) f = 350

350 + p = 850 Substituted (5) into (1)

p = 500 Subtracted 350 from each side

The company bought 350 fir trees and 500 pine trees.

Check:

(1) 350 + 500 = 850 (2) 300 × 350 + 225 × 500 = 217 500

850 = 850 105 000 + 112 500 = 217 500

217 500 = 217 500

OK.

8 0

3 years ago

Help! I have looked at so many lessons on writing exponential functions from a graph and nothing has helped.

Over [174]

Answer:

y = $8(-\frac{1}{2})^x$

Step-by-step explanation:

Let the equation of the exponential function is,

y = a(b)ˣ

Since the graph of this function passes through two points $(4, \frac{1}{2})$ and (3, -1)

For the point $(4, \frac{1}{2})$ ,

$\frac{1}{2}=a(b)^4$ ---------(1)

For second point (3, -1),

-1 = a(b)³ ---------(2)

Divide equation (2) by equation (1),

$\frac{\frac{1}{2}}{-1}$ = $\frac{a(b)^4}{a(b)^3}$

$-\frac{1}{2}=b^{(4-3)}$

$-\frac{1}{2}=b$

From equation (2)

-1 = $a(-\frac{1}{2})^3$

-1 = $-\frac{1}{8}a$

a = 8

Therefore, equation of the exponential function will be,

y = $8(-\frac{1}{2})^x$

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3 years ago

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Lina20 [59]

Answer:

It passes through (1,1).

5 0

3 years ago

Read 2 more answers

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Wewaii [24]

Answer:

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Step-by-step explanation:

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3 years ago