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3 years ago

Ratio Question:

Mathematics

2 answers:

netineya [11]3 years ago

3 0

Answer:

i dont under stand but i will just ask for help to my father

Step-by-step explanation:

i dont wnow the answer!???

s344n2d4d5 [400]3 years ago

3 0

Answer:

Step-by-step explanation:

$Florence \ washed \ 3\ cars \ and\ earned\ = \$ x\\\\$

$Cost\ of \ washing \ one \ car = \frac{x}{3}$

$Anona \ washed \ 5 \ cars \ and \ earned \ 16 \ more \ than \ Florence = x + 16$

$Cost\ of \ washing \ one \ car \ by \ Anona = \frac{x +16}{5}$

$\frac{x}{3} = \frac{x + 16}{5}\\$ $[ \ cross \ multiply \ ]$

$5 \times x = 3 \times( x + 16)\\\\5x = 3x + 48\\\\5x - 3x = 48\\\\2x = 48\\\\x = 24$

$Cost \ of \ washing \ one \car = \frac{x}{3} = \frac{24}{3} = \$ 8$

Therefore ,

Florence earned $24

Anona earned 24 + 16 = $40

Caragh Washed 4 cars, so Caragh earned = 8 x 4 = $32

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SOMEONE PLEASE HELP THIS QUESTION CONFUSED ME THE MOST!!! I WILL GIVE BRAINLEIST ANSWER

musickatia [10]

I think it's 6.216 x 10^8 if this is about standard notation

6 0

3 years ago

Determine which function has the greatest rate of change over the interval [0, 2].

ruslelena [56]

Remember that the average rate of change of a function over an interval is the slope of the straight line connecting the end points of the interval. To find those slopes, we are going to use the slope formula: $m= \frac{y_{2}-y_{1}}{x_2-x_1}$

Rate of change of $a$ :
From the graph we can infer that the end points are (0,1) and (2,4). So lets use our slope formula to find the rate of change of $a$ :
$m= \frac{y_{2}-y_{1}}{x_2-x_1}$
$m= \frac{4-1}{2-0}$
$m= \frac{3}{2}$
$m=1.5$
The average rate of change of the function $a$ over the interval [0,2] is 1.5

Rate of change of $b$ :
Here the end points are (0,0) and (2,2)
$m= \frac{2-0}{2-0}$
$m= \frac{2}{2}$
$m=1$
The average rate of change of the function $b$ over the interval [0,2] is 1

Rate of change of $c$ :
Here the end points are (0,-1) and (2,0)
$m= \frac{0-(-1)}{2-0}$
$m= \frac{1}{2}$
$m=0.5$
The average rate of change of the function $c$ over the interval [0,2] is 0.5

Rate of change of $d$ :
Here the end points are (0,0.5) and (2,2.5)
$m= \frac{2.5-0.5}{2-0}$
$m= \frac{2}{2}$
$m=1$
The average rate of change of the function $d$ over the interval [0,2] is 1

We can conclude that the <span>function that has the greatest rate of change over the interval [0, 2] is the function a.</span>

4 0

3 years ago

Answer.

Neporo4naja [7]

Answer:

a. all matter is made of atoms

b. atoms are indivisible and indestructible

c. atoms of given elements are identical in mass and properties

d. compounds are combination of 2> different types of atoms

2. it's called Planetary model

4 0

3 years ago

Read 2 more answers

The side length of an equilateral triangle is 6 cm. What is the height of the triangle?

solniwko [45]

Correct me if I am wrong but an equilateral has the same length on each side so wouldn’t it be 6 cm?

3 0

3 years ago

Read 2 more answers

Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine claims that the machine cuts

maksim [4K]

Answer:

a) 0.0202

b)The seller's claim is not correct.

c) If the seller's claim is true we cannot have individual length of 72.15 inch.

Step-by-step explanation:

In the question it is given that

population mean, μ = 72 inch

Population standard deviation, σ = 0.5 inch

Sample size, n = 47

Sample mean, x =72.15 inch

a) z score = $\frac{x-\mu}{\sigma/\sqrtr{n}}$ = $\frac{72.15-72}{0.5/\sqrt{47}}$ = 2.0567

P(x ≥ 72.15) = P(z ≥ 2.0567) = 0.5 - 0.4798 = 0.0202

We calculated the probability with the help of standard normal table.

b) The sellers claim that the machine cuts the lumber with a mean length of 72 inch is not correct as we obtained a very low probability.

c)If we assume that the seller's claim is true that is the machine cuts the lumber into mean length of 72 inch then we cannot have an individual length 72.15.

Standard error = $\frac{\sigma}{\sqrt{n} }$ = 0.0729

Because it does not lie within the range of two standard errors that is (μ±2 standard error) = (71.8541,72.1458)

4 0

3 years ago