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3 years ago

8

adam bought a box of fruit that weighed six and three eights if he brought asecond box that weighed 7and two fifth kilograms wha

t is the combined weight of both boxes

1 answer:

-Dominant- [34]3 years ago

3 0

6 and 3/8

7 and 2/5
combine

you can just add the whole numbers
6+7=13

then add the confusing ones
3/8 +2/5
convert the bottom number to the same number

the number is 40
multiply 3/8 by 5/5=15/40
multiply 2/5 by 8/8=16/40

add
15/40+16/40=31/40
the naswer is 13 and 31/40

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Given:

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Number of blue marbles = 8

Number of yellow marbles = 6

Number of green marbles = 2

To find:

The probability of getting a blue marble then a red marble, i.e., P(blue, red).

Solution:

Using the given information,

The total number of marbles = 4+8+6+2

= 20

Probability of getting a blue marble in first draw is

$P(Blue)=\dfrac{\text{Number of blue marbles}}{\text{Total number of marbles}}$

$P(Blue)=\dfrac{8}{20}$

$P(Blue)=\dfrac{2}{5}$

Maria selects a marble, puts it back and then selects a second marble. It means the total number of marbles remains the same.

$P(red)=\dfrac{\text{Number of red marbles}}{\text{Total number of marbles}}$

$P(red)=\dfrac{4}{20}$

$P(red)=\dfrac{1}{5}$

Now, the probability of getting a blue marble then a red marble is

$P(blue,red)=\dfrac{2}{5}\times \dfrac{1}{5}$

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3 years ago

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son4ous [18]

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Step-by-step explanation:

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Sabemos que uno de los lados es 6cm mas largo que el otro, entonces podemos escribir:

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2 years ago

Which of these is an example of a literal equation?

RSB [31]

<u>ANSWER</u>

$ax-by=k$ is an example of literal equation.

<u>EXPLANATION</u>

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2 years ago

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The axis of symmetry for the graph of the function is f(x) = x2 + bx + 10 is x = 6. What is the value of b?

joja [24]

Answer:

$b=-12$

Step-by-step explanation:

we have

$f(x)=x^{2}+bx+10$

we know that

The equation of a vertical parabola into vertex form is equal to

$y=a(x-h)^{2} +k$

where

(h,k) is the vertex of the parabola

and the axis of symmetry is equal to $x=h$

In this problem we have the axis of symmetry $x=6$

so

the x-coordinate of the vertex is equal to $6$

therefore

For $x=6+1=7$ -----> one unit to the right of the vertex

Find the value of $f(7)$

$f(7)=7^{2}+b(7)+10$

$f(7)=59+7b$

For $x=6-1=5$ -----> one unit to the left of the vertex

Find the value of $f(5)$

$f(5)=5^{2}+b(5)+10$

$f(5)=35+5b$

Remember that

$f(5)=f(7)$ ------> the x-coordinates are at the same distance from the axis of symmetry

so

$59+7b=35+5b$ ------> solve for b

$7b-5b=35-59$

$2b=-24$

$b=-12$

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2 years ago

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