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3 years ago

7

find the number 15 balls consisting of 5 black, 5 blue nd 5 white balls from a box which has 6 black, 7 blue and 8 white balls (

b) in how many ways can 7 be arranged .......

1 answer:

AleksAgata [21]3 years ago

4 0

Answer:

Step-by-step explanation:

A bag contains 4 blue, 5 white, and 6 green balls. ... There are 5 red and 15 black balls in a box, two are picked up at random

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A figure has the following coordinates x (0,1).Y (4,6) z (-5,-1). If the figure is translates 4 units left and 3 units up, what

iVinArrow [24]

Answer:

z' (-9,2)

Step-by-step explanation:

I recomend using desmos to show the relashinship

If you don't want to, thwn do this

Preimage $(0-4,1+3),(4-4,6+3),(-5-4,-1+3)$

Since we are finding z, we only use the final cordinates

z'=(-9,2)

8 0

2 years ago

2. Factorise: a - b - a + b2.square

marshall27 [118]

A - a removes both a’s from equation, then you’re left with b + bsquared, since they are unknown values you cannot combine them, even if it is the same letter, you can only add and subtract unknown values with their same letters together.

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2 years ago

Apple orchard sells Apple's in bags of 10. The orchard sold a total of 2,430 apples one day. How many bags of Apple's was this

zlopas [31]

divide them:

2430/10 = 243 bags

5 0

3 years ago

last week a share of stock gained a total of 1.64 points express this gain as a mixed number in simplest form

lbvjy [14]

Answer:

1 16/25

Step-by-step explanation:

1 whole and remaining decimal 0.64

0.64 is 64/100 as a fraction which simplifies to 16/25

So as a whole number its 1 + 16/25 which is 1 16/25

Hope this helps.

8 0

2 years ago

The mean of five numbers is 8. when another number is added the mean is 7. find the number added

sasho [114]

Answer:

$\large \boxed{\sf \ \ 2 \ \ }$

Step-by-step explanation:

Hello,

<u>The mean of five numbers is 8</u> so we can write

$\dfrac{x_1+x_2+x_3+x_4+x_5}{5}=8$

<u>When another number is added the mean is 7</u>, let s note x the another number we can write

$\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7$

From the first equation we can say

$x_1+x_2+x_3+x_4+x_5=8*5=40$

So the second equation becomes

$\dfrac{x_1+x_2+x_3+x_4+x_5+x}{6}=7\\\\ \dfrac{40+x}{6}=7\\\\40 + x = 6*7=42\\\\ x = 42-40 = 2\\$

The solution is then 2

Hope this helps

4 0

3 years ago