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4 years ago

PLLLZZZZZZZ Help!!!

Mathematics

2 answers:

disa [49]4 years ago

8 0

Answer:

The scatter plot is attached.

Step-by-step explanation:

In a scatter plot, we graph the independent variable on the x-axis and the dependent variable on the y-axis.

In this case, age is independent and weight is dependent.

This means the points we plot are:

(7, 50); (7, 60); (8, 65); (8, 70); (9, 70); (9, 80); (10, 75); and (10, 90).

lilavasa [31]4 years ago

5 0

For this case, the first thing we must do is to graph the following ordered pairs one by one:
7 50
7 60
8 65
8 70
9 70
9 80
10 75
10 90
Then, we see the trend of the graph.
We observe that as the time increases in years, the weight also increases.
Answer:
See attached image.

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The width of a rectangle is 8 units less than the length. If the area is 153 square units, then find the dimensions of the recta

Liono4ka [1.6K]

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4 years ago

Please can I have an explanation also, I am terrible at these kinds of questions!

wlad13 [49]

Answer:

The fraction of the beads that are red is

Step-by-step explanation:

Algebraic Expressions

A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:

r:y = 2:3

y:b = 5:4

We are required to find r:s, where s is the total of beads in the bag, or

s = r + y + b

Thus, we need to calculate:

$\displaystyle \frac{r}{r+y+b} \qquad\qquad [1]$

Knowing that:

$\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2]$

$\displaystyle \frac{y}{b}=\frac{5}{4}$

Multiplying the equations above:

$\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}$

Simplifying:

$\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3]$

Dividing [1] by r:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}$

Substituting from [2] and [3]:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}$

Operating:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}$

The fraction of the beads that are red is $\mathbf{\frac{10}{37}}$

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