All categories

3 years ago

2

Mathematics

1 answer:

Troyanec [42]3 years ago

7 0

The answer is 4

Since 3.3x 4 is 13.2 and plus 3.0 is 16.2

You might be interested in

The prime factorization of a number is 3 x 4 x 4 x 4 x 7 x

Kryger [21]

Answer:

3 x $4^{3}$ x $7^{2}$

Step-by-step explanation:

4 0

3 years ago

8 7/10 - 3 4/10<br>pls help im so behind

nadezda [96]

Answer:

8 7/10 - 3 4/10 = 5.3, 5 3/10, or 53/10

5.3, 5 3/10, and 53/10 all equals to 8 7/10 - 3 4/10 :)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Brianna is twice as old as James . David is four times as old as James. Brianna is 20 years younger than David. How old is David

IrinaK [193]

Answer:

David might be 40

Step-by-step explanation:

Brianna = 20 + 20 = 40 = David

James = 10 x 2 = Brianna

David = 40 - 20 = Brianna

8 0

4 years ago

Find the midpoint of the segment with endpoints (-4,5) (1,3) and enter its coordinates as an ordered pair. Please help!!!! No li

docker41 [41]

Answer:

6-2

Step-by-step explanation:

so first you know you will have to divide it by both numbers you have and whatever number u have thats your answer

5 0

3 years ago

A rectangular pool 18 meters by 12 meters is surrounded by a walkway of width x

vesna_86 [32]

Answer:

x=3 meters

Step-by-step explanation:

step 1

Find the area of the rectangular pool

$A=LW$

we have

$L=18\ m\\W=12\ m$

substitute

$A=18(12)=216\ m^2$

step 2

Find the area of rectangular pool including the area of the walkway

Let

x ----> the width of the walkway

we have

$L=(18+2x)\ m\\W=(12+2x)\ m$

substitute

$A=(18+2x)(12+2x)$

step 3

Find the area of the walkway

To find out the area of the walkway subtract the area of the pool from the area of rectangular pool including the area of the walkway

$A=(18+2x)(12+2x)-216$

step 4

Find the value of x if the area of the walkway equal the area of the pool

$(18+2x)(12+2x)-216=216$

Solve for x

$(18+2x)(12+2x)=432\\216+36x+24x+4x^{2}=432\\4x^{2} +60x-216=0$

Solve the quadratic equation by graphing

The solution is x=3 meters

see the attached figure

8 0

4 years ago