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3 years ago

10

3 out of every 10 students ages 6 to 14 have a magazine subscription supposed are 30 students in Annabelle's class about how man

y will have a magazine subscription

1 answer:

Zigmanuir [339]3 years ago

4 0

Answer: 9 students

Step-by-step explanation:

10 X 3 = 30

3 X 3 = 9 students

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There are three marbles in a bag. One is red and two are black. What is the probability of picking a black marble first, putting

Maru [420]

Answer:

well for me I think

Step-by-step explanation:

2/3×2/3

4/9

since they are replacing the black marbles back

6 0

3 years ago

X4 – 17x2 + 16 = 0 Rewrite the equation in terms of u

slavikrds [6]

You probably are interested in expressing the given equation as a quadratic equation in u, as it will make it easy to find the solutions.

Let u = x²
So,
u² = x⁴

So, the given equation can be written as:

u² - 17u + 16 = 0

Now the equation is quadratic in u and the solutions can be calculated using quadratic formula or factorization.

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3 years ago

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Please solve this, i will mark brainliest

Anton [14]

Answer:

$k=-2$

Step-by-step explanation:

Let's write the left hand side as a negative power, and 9 as a power of 3:

$3^-^k=3^2$ At this point, for the equality to still stand, the exponents have to be equal:

$-k = 2 \rightarrow k=-2$

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2 years ago

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The peso is the currency of Mexico. On October 17, 2016, the exchange rate for 1 Mexican peso was $0.053 U.S. If a traveler exch

Allushta [10]

1 peso = 0.053 dollars.

x pesos = 400 US dollars.

1/x = 0.053 / 400 Cross multiply

400 * 1 = 0.053 x Divide by 0.053

400/0.053 = 0.053*x / 0.053

7547.17 pesos which rounded is

Answer: 7547 pesos

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3 years ago

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Find the degree of this polynomial? <br> 13-4ab+5a^3b

Anastasy [175]

Let's take a peek of each term, to be specific, the exponent of the variables only, to see what degree each term is

$\bf 13-4ab+5a^3b\quad 
\begin{cases}
13\impliedby \textit{no variable, degree is 0}\\
4ab\to 4a^1b^1\impliedby \textit{1+1, degree is 2}\\
5a^3b\to 5a^3b^1\impliedby\textit{3+1, degree is 4}
\end{cases}$

so...which term has the highest degree? well, that one, is the degree of the polynomial

7 0

3 years ago