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3 years ago

Jessica opened a case of juice boxes.

Mathematics

1 answer:

SashulF [63]3 years ago

4 0

Answer:

(7 x 8) - 3 - 5 = 48

Step-by-step explanation:

pls mark as branlyest

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A man is in a boat 2 miles from the nearest point on the coast. He is to go to point Q, located 3 miles down the coast and 1 mil

mafiozo [28]

Answer:

The answer is "0.45385".

Step-by-step explanation:

The time is taken to reach the coast $= \frac{\sqrt{(2^2 + x^2)}}{4}$

The time is taken to reach Q after reaching the coast $= \frac{\sqrt{(1 + (3-x)^2)}}{4}$

Total time, $T= \frac{\sqrt{(1 + (3-x)^2)}}{4}+ \frac{\sqrt{(1 + (3-x)^2)}}{4}$

This has to be minimum,

$\to \frac{dt}{dx} = 0$

$\to \frac{\sqrt{(2^2 + x^2)}}{2} + \frac{\sqrt{1 + (3-x)^2}}{3}\\\\ \frac{x}{4}\sqrt{(4+x^2)} + \frac{(x-3)}{(4\sqrt{(x^2-6x+10)}} = 0\\\\\frac{x^2}{16} \times (4+x^2) = \frac{(x-3)^2}{16 \times (x^2-6x+10)}\\\\x^2(4+x^2) = \frac{(x-3)^2}{(x^2-6x+10)}\\\\4x^2+x^4 = \frac{ x^2+9-6x}{(x^2-6x+10)}\\\\ 4x^2+x^4(x^2-6x+10) = x^2+9-6x\\\\4x^4-24x^3+40x^2+x^6-6x^5+10x^4= x^2+9-6x\\\\x^6-6x^5+ 14x^4-24x^3+39x^2+6x-9=0\\\\$

x=0.45385

6 0

3 years ago

9 is 25% of what number?

Black_prince [1.1K]

Answer:

1. 36

2. 90

3. 9

4. 6

Step-by-step explanation:

4 0

3 years ago

I need math help please

Misha Larkins [42]

$\left(a^4b^{ \frac{1}{2} } \right)^4 \sqrt[6]{b^6}=a^{4\cdot4} \ b^{ \frac{1}{2}\cdot4 } \ b^{ \frac{6}{6} }=a^{16} \ b^{2} \ b^{1}=a^{16}b^3$

6 0

3 years ago

5.1 kilograms = __grams<br> Answer here

kotykmax [81]

1 gram = .001 kg

5.1kg = 5100g

7 0

3 years ago

The partial factorization of x2 – 3x – 10 is modeled with algebra tiles.

jekas [21]

Add together to get -3
Multiply together to get -10
Can you think of the two numbers?

Try 2 and -5:
2+-5 = -3
2*-5 = -10.

Therefore, (x+2)(x-5) is the answer :)

3 0

3 years ago