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3 years ago

10

Can someone help me on number 8. I tried to do it, but I can’t seem to find the right answer.

1 answer:

qaws [65]3 years ago

4 0

Check the picture below.

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Three lines of crops in a garden form a triangular shape. Strawberries are planted in a 10 ft line and green beans are planted i

Marat540 [252]

Answer:

$p = 19.18$

Step-by-step explanation:

This question is illustrated using the attachment and will be solved using cosine formula

$a^2 = b^2 + c^2 - 2bcCosA$

<em>Let the strawberry side be s, the Green beans be b and the pumpkins be p.</em>

<em />

The cosine formula in this case is:

$g^2 = s^2 + p^2 - 2spCosG$

Where

$s = 10$

$g = 18$

The equation becomes

$18^2 = 10^2 + p^2 - 2 * 10 * p * Cos\ 68$

$324 = 100 + p^2 - 20 * p * 0.375$

$324 = 100 + p^2 - 7.5p$

Collect Like Terms

$p^2 - 7.5p + 100 - 324 = 0$

$p^2 - 7.5p - 224 = 0$

Using quadratic formula:

$p = \frac{-b\±\sqrt{b^2-4ac}}{2a}$

Where

$a = 1$

$b = -7.5$

$c = -224$

$p = \frac{-(-7.5)\±\sqrt{(-7.5)^2-4*1*-224}}{2*1}$

$p = \frac{7.5\±\sqrt{56.25+896}}{2}$

$p = \frac{7.5\±\sqrt{952.25}}{2}$

$p = \frac{7.5\± 30.86}{2}$

$p = \frac{7.5 + 30.86}{2}$ or $p = \frac{7.5 - 30.86}{2}$

$p = \frac{38.36}{2}$ or $p = \frac{-23.36}{2}$

$p = 19.18$ or $p = -11.68$

But length can not be negative.

So:

$p = 19.18$

6 0

3 years ago

Which statement is true about a number and its multiplicative inverse? A. Their product is always zero. B. Their product is alwa

stiv31 [10]

Answer: their product is always one

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers

Subtract 3x + 2 from 8x + 9.

kirill115 [55]

Answer:

5x+7

Step-by-step explanation:

Subtract like terms

(8x+9)-(3x+2)

8x-3x=5x

9-2=7

5x+7 should be your answer I believe

3 0

3 years ago

One-half an amount, x, added to $50 is $262.

blondinia [14]

X=$212

$262-$50=$212

HOPE ITS RIGHT!!

HOPE THIS HELPS!!!

8 0

3 years ago

Find the equation of the straight line passing through the point (3, 3) which is perpendicular to the line y=-x-4

Elena L [17]

Answer: y=x
The slope of the perpendicular line is the opposite reciprocal. So you do -(-1/1) which equals 1. So now we have y=x+b. Plug (3,3) into this and you get 3=3+b. So b=0 and the equation is y=x

5 0

3 years ago