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2 years ago

Help plz i hate this but everytime I do this I get it worng

Mathematics

1 answer:

Natali [406]2 years ago

3 0

Answer:

The answer is 19.25

Step-by-step explanation:

<u>Key skills needed: Fraction operations, decimal conversion</u>

1) We are given the hint to use 9 as "b", and we get:

---> $a = \frac{16}{8}(9) + \frac{10}{8}$

Let's do $\frac{16}{8}(9)$

--> $\frac{16}{8}$ is the same as $16$ ÷ $8$

16 divide by 8 is 2.

2) This means that it would be ---> $2(9)$ which is simply 2 times 9.

2 times 9 = 9 + 9 = 18

3) With that result, it would be ---> $a = 18 + \frac{10}{8}$

Now, do $\frac{10}{8}$ (10 divided by 8) ---> Get 1.25

4) 18 + 1.25 = 19.25, so --> $a = 19.25$ is the answer

<em>Hope you understood and have a nice day!! :D</em>

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Answer:

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Step-by-step explanation:

Data can be divided into 2 types:

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Different genres of music represent an attribute, hence the data is Qualitative. Qualitative data which can put into some order is at Ordinal scale of measurement, while if the data simply represent the name or attributes it would be at Nominal Level.

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3 years ago

The population of Salisa is 12,500 and increases by 300 each month. The population of Corsair is 13,200 and increases by 200 eac

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It will take seven months for the population of each city to be the same.

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2 years ago

A parabola with a vertical axis has its vertex at the origin and passes through point (7,7). The parabola intersects line y = 6

yulyashka [42]

Answer:

$\boxed{\text{B. 13}}$

Step-by-step explanation:

1. Find the equation of the parabola

The vertex is at (0, 0), so the axis of symmetry is the y-axis.

The graph passes through (7, 7), so it must also pass through (-7,7).

The vertex form of the equation for a parabola is

y = a(x - h)² + k

where (h, k) is the vertex of the parabola.

If the vertex is at (0, 0),

h = 0 and k = 0

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y = ax²

2. Find the value of a

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7 = a(7)²

1 = 7a

a = ⅐

The equation in vertex form is

y = ⅐x²

3. Calculate the length of the segment when y = 6

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The distance between the two points is the length (l) of line AB.

A is at (√42, 6); B is at (-√42, 6).

l = x₂ - x₁ = √42 – (-√42) = √42 + √42 = 2√42 ≈ 2 × 6.481 ≈ 13.0

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