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3 years ago

Given that a × 70 = b work out the value of Your final line should say, 3b/a =...

Mathematics

1 answer:

alukav5142 [94]3 years ago

8 0

a/q b/a=70 so ans will be 210

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432,2=26 275,3=66 342,5=41 123,4=20 then 543,2=?

Readme [11.4K]

Answer:

I think 543,2=24.

hope it helps

5 0

3 years ago

Michael puts 3 beads next to each other

mihalych1998 [28]

When we multiply a whole number with a fraction, we can think of the whole numbers as "over one"...

5 3 5 15
3 * --- = --- * ---- = ----
6 1 6 6

We can further simplify the fraction, by dividing numerator and denominator by 3...

15 15 / 3 5
--- = ------- = ----
6 6 / 3 2

Since this is an improper fraction, we need to turn it into a mixed number...

5 2 + 2 + 1 2 2 1 1 1
---- = -------------- = --- + ---- + --- = 1 + 1 + ---- = 2 --- or 2.5
2 2 2 2 2 2 2

6 0

3 years ago

What is the value of -2(x + 5)

Vanyuwa [196]

Answer:

-2x-10

Step-by-step explanation:

just distribute the -2 :)

4 0

3 years ago

Amy has 3 children, and she is expecting another baby soon. Her first three children are girls. Is the sex of the fourth baby de

Bad White [126]

I'm pretty sure the answer is independent because the sex of her other children has nothing to do with the sex of her new baby. I may be wrong though.

7 0

3 years ago

Read 2 more answers

Una piscina rectangular de 15 metros de largo por 9 metros de ancho està rodeada por un

stira [4]

Answer: 2 meters.

Step-by-step explanation:

Let w = width of the cement path.

Dimensions of pool : Length = 15 meters , width = 9 meters

Area of pool = length x width = 15 x 9 = 135 square meters

Along width cement path, the length of region = $2w+15$

width = $2w+9$

Area of road with pool = $(2w+15) (2w+9)$

$= 4w^2+30w+18w+135\\\\=4w^2+48w+135$

Area of road = (Area of road with pool ) -(area of pool)

$\Rightarrow\ 112 =4w^2+48w+135- 135\\\\\Rightarrow\ 112= 4w^2+48w\\\\\Rightarrow\ 4 w^2+48w-112=0\\\\\Rightarrow\ w^2+12w-28=0\ \ \ [\text{Divide both sides by 4}]\\\\\Rightarrow\ w^2+14w-2w-28=0\\\\\Rightarrow\ w(w+14)-2(w+14)=0\\\\\Rightarrow\ (w+14)(w-2)=0\\\\\Rightarrow\ w=-14\ or \ w=2$

width cannot be negative, so w=2 meters

Hence, the width of the road = 2 meters.

8 0

3 years ago