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3 years ago

12

A is what percent of B? c A = 10 km, B = 1 km

2 answers:

inessss [21]3 years ago

7 0

Answer:

1000%

Step-by-step explanation:

The comparison is 10km and 1km, right?

A is 10 times bigger than B.

100% times 10 is 1000%

Hope this helps. :)

mamaluj [8]3 years ago

4 0

Answer:

1000%

Step-by-step explanation:

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A single card is drawn at random from a standard 52 card deck.

Sholpan [36]

Answer:

Step-by-step explanation:

P(8)

There are 4 eights in a standard deck (no jokers) So the probability is 4/52 = 1/13 = 0.0769

P( ~ 8)

48 cards in a standard deck are not 8

P( ~8) = 12/13 = 0.9231

7 0

3 years ago

A group of hikers walked 2 1/4 km in 3/4 hour. c On a coordinate plane, plot the four points showing distance hikers went in ¾ o

maw [93]

Answer:

Given,

The total distance = $2\frac{1}{4}$ km,

Time = $\frac{3}{4}$ hours,

Since,

$Speed =\frac{Distance}{Time}$

Thus, the speed of the group of hikers = $\frac{2\frac{1}{4}}{\frac{3}{4}}$

$=\frac{\frac{9}{4}}{\frac{3}{4}}$

= 3 km per hour,

Now, Distance = speed × time

Let y be the distance( in km ) covered in x hours

⇒ y = 3x

If x = $\frac{3}{4}$

$y=3\times \frac{3}{4}=\frac{9}{4}$

If x = 2

$y=3\times 2=6$

If x =3

$y=3\times 3 = 9$

If x = 4

$y=3\times 4=12$

Hence, the required points in the coordinate plane are, ( shown in the below diagram )

(3/4, 9/4), (2, 6), (3, 9) and (4, 12)

3 0

3 years ago

Maria normally walks 3/4 of an hour each day.Today she walked 5/2 times as long as normal. Did maria walk for more than 5/2 hour

tankabanditka [31]

Answer:

Marie did not walk $\dfrac{5}{2}$ hours more, but she walk $\dfrac{9}{8}$ hours more .

Step-by-step explanation:

Given as :

The normal hours did Maria walks each day = $\dfrac{3}{4}$ hours

The hours did Maris walk today = $\dfrac{5}{2}$ times normal hours walk

Or, The hours did Maris walk today = $\dfrac{5}{2}$ × $\dfrac{3}{4}$ hours

Or, The hours did Maris walk today = $\dfrac{5\times 3}{2\times 4}$ hours

Or, The hours did Maris walk today = $\dfrac{15}{8}$ hours

Now, Let The difference between normal hours walk and today hours walk = x hours

So, x = $\dfrac{15}{8}$ hours - $\dfrac{3}{4}$ hours

<u>Taking LCM</u>

Or, x = $\dfrac{15 - 6}{8}$ hours

Or, x = $\dfrac{9}{8}$ hours

So, Maria walk $\dfrac{9}{8}$ hours more

Hence, Marie did not walk $\dfrac{5}{2}$ hours more, but she walk $\dfrac{9}{8}$ hours more . Answer

8 0

3 years ago

Which of the following equations describe the line shown below? (-2, 3) (1, 9)

Setler79 [48]

Distance formula is derived from the Pythagorean theorem. To find the distance between two points (x1,y1) and (x2,y2), all that you need to do is use the coordinates of these ordered pairs and apply the formula to those points. So the formula would be:D=square root symbol(X1-X2)2+(Y1-Y2)2. Hope I've helped you any

6 0

3 years ago

The 555 points plotted below are on the graph of y=\log_b{x}y=log

adell [148]

Answer:

See attachment for graph

Step-by-step explanation:

<em>See comment for correct question</em>

Given

$y = \log_bx$

Required

The corresponding points on $y =b^x$

On the graph, we have:

$(x_1,y_1) \to (1,0)$

$(x_2,y_2) \to (2,1)$

$(x_3,y_3) \to (4,2)$

$(x_4,y_4) \to (8,3)$

$(x_5,y_5) \to (16,4)$

First, we solve for b in $y = \log_bx$

Using laws of logarithm, the equivalent of the above is:

$x = b^y$

$(x_2,y_2) \to (2,1)$ implies that:

$2 = b^1$

$2 = b$

Rewrite as:

$b =2$

So, the equation $y =b^x$ becomes:

$y = 2^x$

Using the same values of x, we have:

$(x_1,y_1) = (1,2)$

$(x_2,y_2) = (2,4)$

$(x_3,y_3) = (4,16)$

$(x_4,y_4) = (8,256)$

$(x_5,y_5) = (16,65536)$

<em>See attachment for graph</em>

7 0

3 years ago