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iogann1982 [59]
3 years ago
14

15 POINTS PLEASE HELP

Mathematics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

A, r=9

Step-by-step explanation:

Multiply through by the LCM

r + (3×5) <= 3×8

r + 15 <= 24

r <= 24 - 15

r <= 9

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The answer is A. 74°
If the vertex of an angle is on the circle, then the angle measure is one-half the intercepted arc.
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3 years ago
Which exponential function is represented by the table? f(x) = 2(2x) f(x) = 0.8(0.8x) f(x) = 2(0.8x) f(x) = 0.8(2x)
Serjik [45]
Table

x         f(x)

-2        0.2

-1        0.4

0         0.8

1         1.6

2          3.2


Look that the pair of data (0, 0.8), it means f(0) is 0.8

Given that a^0 = 1, means that the coefficient of the function has to be 0.8 and you discard the first and the third options.

You have to replace the values of x in the equations and compare the results.

For f(x) = 0.8 * (2^x) you get

x         f(x) = 0.8 * (2^x)

-2        0.8 * (2^-2) = 0.8 / 4 = 0.2

-1        0.8 * (2^-1) = 0.8 / 2 = 0.4

0         0.8 * (2^0) = 0.8 * 1 = 0.8

1         0.8 * (2^1) = 0.8 * 2 = 1.6

2          0.8 * (2^2) = 0.8 * 4 = 3.2

As you can see these results are the same of the table of the question, so the function is f(x) = 0.8 (2^x).

Answer: f(x) = 0.8 * (2^x)

6 0
3 years ago
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2. En el sobre de un jugo instantáneo aparece la siguiente información: “prepare un delicioso litro de jugo de naranja”. Si con
babunello [35]

2) 200 mL

3) 0.2 kg

Step-by-step explanation:

2)

In this problem, we know that:

- With 1 liter of juice, we can fill a total of 5 cups

So we know that the total volume of 5 cups is equal to

V = 1 L

This means that the volume of each cup is equal to the total volume divided by the number of cups (5), therefore:

V_1=\frac{V}{5}=\frac{1L}{5}=0.2 L

And keeping in mind the equivalence between liters and milliliters:

1 L = 1000 mL

This means that the capacity of each cup is

V_1=0.2 L \cdot 1000 mL/L = 200 mL

3)

Here we want to find the mass contained in each cup.

We know that the mass of a substance is related to each volume by the equation

d=\frac{m}{V}

where

d is the density

m is the mass

V is the volume

In this problem, we have:

V = 0.2 L is the volume of juice in each cup

d=1kg/L is the density of juice (assuming it is the same as the density of water)

So, the mass of juice in one cup is:

m=dV=(1)(0.2)=0.2 kg

8 0
3 years ago
$36 - $12.75 =<br> Pls answer
Lyrx [107]
$36 - $12.75 is $23.25
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. If x = 7 + 4√3 then find the value of x2<br> – 1/x2
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Answer:

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Step-by-step explanation:

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