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2 years ago

Solve for x . help anyone ?

Mathematics

2 answers:

Stella [2.4K]2 years ago

5 0

5 I think. I’m pretty sure it is though

guajiro [1.7K]2 years ago

3 0

Step-by-step explanation:

$\cos(60) = \frac{x}{10} \\ x = 5$

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What is the result when the number 87 is increased by 3.9%?

RoseWind [281]

Answer:

90.393

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

For any perfect square trinomial (quadratic), the constant term (last term) must be positive.

Ronch [10]

Answer:

For the perfect square trinomial (quadratic) i.e. $\left(x\:+\:3\right)^2$ , the constant term (last term) is positive.

Step-by-step explanation:

"Perfect square trinomials" are termed as the quadratics that are the outcomes of squaring binomials.

For example:

$\left(x\:+\:3\right)^2$

$\mathrm{Apply\:Perfect\:Square\:Formula}:\quad \left(a+b\right)^2=a^2+2ab+b^2$

$a=x,\:\:b=3$

$=x^2+2x\cdot \:3+3^2$

$=x^2+6x+9$

Therefore, for the perfect square trinomial (quadratic) i.e. $\left(x\:+\:3\right)^2$ , the constant term (last term) is positive.

5 0

2 years ago

The length of a rectangular swimming pool is twice as long as its width. If the perimeter of the pool is

Nitella [24]

The perimeter of a rectangle is the sum of its sides, which are two widths and two lengths:

$p=w+w+l+l$

Since the length is twice the width, we have $l=2w$ , and the formula for the perimeter becomes

$p=w+w+2w+2w=6w$

So, we have

$6w=120 \iff w=\dfrac{120}{6}=20$

4 0

2 years ago

What is .84 divided by .02<br> please help me because i really really REALLY need help on this

KatRina [158]

Hello There!

.84 ÷ .02 ≈ 42

WORK SHOWN IN IMAGE ATTACHED

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3 years ago

A mixture requires 4 cups of water for every 7 cups of flour used. Use the ratio table to determine how many cups of water shoul

mr Goodwill [35]

Answer:

16 cups of water

Step-by-step explanation:

You find this by dividing 28 by your ratio of flour to get 4, then multiplying the cups of water, 4, by 4 to get 16 cups of water

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2 years ago