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3 years ago

PLEASE HELP ME GRAPH THIS

Mathematics

1 answer:

Contact [7]3 years ago

7 0

Answer: start point will be 60 which is between 40 and 80 and go up files point to 80 then the second will be 40.

and go files point to between 80 and 120 then the second point will be 80

Step-by-step explanation:

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Kevin sold a box of 28 books at a yard sale for a total of $54.64. He sold the paperback books for $1.68 each and sold the hardc

vivado [14]

Answer:

x + y = 28

1.68x + 2.44y = 54.64

Step-by-step explanation:

Let x = paperback books and y = hardback books

x+y =28

We know that paperbacks cost 1.68 and hardback cost 2.44

1.68x + 2.44y = 54.64

We have 2 equations and 2 unknowns

x+y =28

1.68x + 2.44y = 54.64

8 0

3 years ago

Completa el enunciado siguiente. Luego usa una recta numérica para hallar la suma 4 + (-7).

bagirrra123 [75]

Respuesta Es -3 (tried my best I’m only in Spanish two my main language is English)

8 0

3 years ago

My brainy brother and sister added their ages together and got 15. When they multiplied their ages together, they got 54. How ol

Vinvika [58]

Given:

Sum of ages of brother and sister = 15

Product of their ages = 54

To find:

How old is the older one between the two of them?

Solution:

Let x be the age of brother and y be the age of sister.

Sum of ages of brother and sister = 15

$x+y=15$

$x=15-y$ ...(i)

Product of their ages = 54

$xy=54$

$(15-y)y=54$ [Using (i)]

$15y-y^2=54$

$0=54-15y+y^2$

Splitting the middle term, we get

$54-15y+y^2=0$

$54-9y-6y+y^2=0$

$9(6-y)-y(6-y)=0$

$(6-y)(9-y)=0$

Using zero product property, we get

$(6-y)=0\text{ and }(9-y)=0$

$y=6\text{ and }y=9$

If $y=6$ , then using (i), we get

$x=15-6$

$x=9$

If $y=9$ , then using (i), we get

$x=15-9$

$x=6$

Therefore, the age of older one is 9, the age of younger one is 6 and the difference between their ages is 3.

6 0

3 years ago

A number cube is tossed and the spinner below is spun. Find P(3 and C).

pickupchik [31]

Answer:

$P(3\ and\ C) = \frac{1}{24}$

Step-by-step explanation:

Given

Cube and Spinner (See attachment for spinner)

Required

Find P(3 and C)

In the attached spinner, there are 8 partitions and C = 2

So:

$P(C) = \frac{2}{8}$

$P(C) = \frac{1}{4}$

In a number cube, there are 6 faces and 1 side is 3.

So:

$P(3) = \frac{1}{6}$

P(3 and C) is calculated as:

$P(3\ and\ C) = P(3) * P(C)$

$P(3\ and\ C) = \frac{1}{6} * \frac{1}{4}$

$P(3\ and\ C) = \frac{1}{24}$

7 0

3 years ago

Find the value of x and y

Nesterboy [21]

Step-by-step explanation:

step 1. break into 2 shapes: a rectangle of sides 3 and 4. a triangle of sides (x - 3), 4, and y.

step 2. y = 4sqrt(2) (definition of a 45° triangle)

step 3. note: sqrt is the square root.

step 4. x - 3 = 4 (definition of a 45° triangle)

step 5. x = 7 (add 3 to both sides).

6 0

3 years ago