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pochemuha
2 years ago
14

A person has an unknown element with a volume of 16 cubic inches and a weight of 4.13 pounds.

Mathematics
1 answer:
yawa3891 [41]2 years ago
7 0
Answer is A.Zinc
If it not it still Zinc

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How many counselors you would need for 64 campers.
allochka39001 [22]

Answer:

Step-by-step explanation:

Depends on how many groups of kids you want, say you want a counselor for every 10 kids, you can get at least 6 or 7 counselors

6 0
3 years ago
Is this right and what's the answer for number 3?
Mumz [18]
That looks great! But say you chose number 2. You could say you organized it by multiplying single packs by the pieces of packs.
7 0
2 years ago
Read 2 more answers
SinA=√1-x÷√1+X<br> Find the value of cosA
Irina-Kira [14]

The value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

<h3>Trigonometric ratios</h3>

It is important to note that

sin A = opposite/ hypotenuse

cos A = adjacent/ hypotenuse

Then,

opposite = \sqrt{1} - x

Hypotenuse = \sqrt{1} + x

Let's find the adjacent side using the Pythagorean theroem

(\sqrt{1} + x)^2 = (\sqrt{1 -x } )^2 + x^2

1 + x^2 = 1 - x^2 + x^2

x = \sqrt{\frac{1 + x^2}{1 -x^2} }

cos A = x/hypotenuse

cos A = \frac{\sqrt{\frac{1+x^2}{1 -x^2} } }{\sqrt{1} +x}

cos A = √(1 + x²)/ (1 - x²) /√1 + x

Thus, the value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

Learn more about trigonometric identities here:

brainly.com/question/7331447

#SPJ1

6 0
1 year ago
What’s 3х + 7&gt;4х +2
Kipish [7]

Answer:

x < 5

Step-by-step explanation:

3x + 7 > 4x + 2 \\ 7 - 2 > 4x - 3x \\ 5 > x

x < 5

6 0
3 years ago
If x+a is a factor of 2x²+2ax+5x+10,find a.
vazorg [7]

If x+a is a factor of the polynomial, it means that -a is a root of the polynomial.

In fact, if a polynomial p(x) has a root x_0 (i.e. p(x_0)=0), then the polynomial is divisible by (x-x_0)

In your case, you know that the polynomial is divisible by (x+a)=(x-(-a)), so -a is a solution.

Let's evaluate p(-a) and set it to zero:

2(-a)^2+2a(-a)+5(-a)+10 = 0 \iff 2a^2-2a^2-5a+10=0 \iff -5a+10 = 0 \iff a = 2

We can check the answer: if a=2 the polynomial becomes

2x^2+2(2)x+5x+10 = 2x^2+9x+10

And we're claiming that -a=-2 is a root of this polynomial:

2(-2)^2+9(-2)+10 = 2\cdot 4 - 18 + 10 = 0

5 0
3 years ago
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