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2 years ago

6

Louis needs to secure his tent.He will use a rope to go down the edge of the tent, straight out to a post and back to the starti

ng think fastener,as shown

1 answer:

tester [92]2 years ago

4 0

Answer:

i need help

Step-by-step explanation:

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15. True or False: Is x = 4 a solution to X + 51 = -9<br> True<br> False

Ivenika [448]

Answer:

False, also the typed version of this problem does not actually use the expression in the accompanying screenshot. That clearly reads as x + 5

Step-by-step explanation:

The problem, assuming x = 4 can be read as 4 + 5. Simple math dictates this would equal nine and as there is no negative to either number nor a negative outside of the lines surrounding the problem itself the solution is simple and leads to a false answer.

3 0

3 years ago

Read 2 more answers

If f(x) = x^2 - 4(x) + 6, find x if f(x) = 27

Elena L [17]

Answer:

x = - 3 or x = 7

Step-by-step explanation:

Given

f(x) = x² - 4x + 6

If f(x) = 27, then equating gives

x² - 4x + 6 = 27 ( subtract 27 from both sides )

x² - 4x - 21 = 0 ← in standard form

Consider the factors of the constant term ( - 21) which sum to give the coefficient of the x- term ( - 4)

The factors are - 7 and + 3, since

- 7 × 3 = - 21 and - 7 + 3 = - 4, hence

(x - 7)(x + 3) = 0

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 7 = 0 ⇒ x = 7

4 0

3 years ago

Simplify 7(B + 3) + 2B

Blizzard [7]

<span>7(B + 3) + 2B
= 7B + 21 + 2B
= 9B + 21

hope it helps</span>

5 0

3 years ago

Read 2 more answers

The probability of winning on a single toss of the dice is p. A starts, and if he fails, he passes the dice to B, who then attem

alekssr [168]

Answer:

The probability of A winning is $\frac{1}{2-p}$ and the probability of B winning is $\frac{1-p}{2-p}$ .

Step-by-step explanation:

The probability of winning is <em>p</em>.

The game stops when either A or B wins.

The sample space of A winning is as follows:

{S, FFS, FFFFS, FFFFFFS, ...}

The sample space of B winning is as follows:

{FS, FFFS, FFFFFS, FFFFFFFS, ...}

Compute the probability of <em>A</em> winning as follows:

P (A winning) = P (S) + P (FFS) + P (FFFFS) + ...

$=p+(1-p)(1-p)p+(1-p)(1-p)(1-p)(1-p)p+...\\=p\sum\limits^{\infty}_{i=0} {(1-p)^{2i}}\\=p\times \frac{1}{1-(1-p)^{2}}\\=\frac{p}{1-(1-p)^{2}}\\=\frac{p}{1-1-p^{2}+2p}\\=\frac{1}{2-p}$

Compute the probability of <em>B</em> winning as follows:

P (B winning) = P (FS) + P (FFFS) + P (FFFFFS) + ...

$=(1-p)p+(1-p)(1-p)(1-p)p+(1-p)(1-p)(1-p)(1-p)(1-p)p+...\\=(1-p)p\sum\limits^{\infty}_{i=0} {(1-p)^{2i}}\\=(1-p)p\times \frac{1}{1-(1-p)^{2}}\\=\frac{(1-p)p}{1-(1-p)^{2}}\\=\frac{(1-p)p}{1-1-p^{2}+2p}\\=\frac{1-p}{2-p}$

Thus, the probability of A winning is $\frac{1}{2-p}$ and the probability of B winning is $\frac{1-p}{2-p}$ .

3 0

3 years ago

A CD usually sells for $18.00. Of the CD is 10% off, and sales tax is 8%, what is the total price of the CD, including tax?

zzz [600]

The CD usually sells for $18.00, and of this price is 10% off, so you would want to first find out 10% of $18.00 is, and subtract that from $18.00

10% of 18.00 is 1.8, so:
$18.00 - 1.8 = $16.20

$16.20 is the price of the CD after a 10% off discount, but you still want to find out the total price with the sales tax.

To find the tax, find 8% of $16.20, and add that amount to $16.20
So:
8% of $16.20 is $1.30
Add $16.20 + $1.30 = $17.50

Thus your final answer is $17.50, which is the total price of the CD, including tax.

4 0

3 years ago