3 years ago

Mental math Solve the equation n/10+5=12

Mathematics

1 answer:

andriy [413]3 years ago

7 0

Ok so n=70, I hope it’s right:)

You might be interested in

The marked price of an article is Rs 4,500. After allowing some percent of discount

Neporo4naja [7]

Answer:

mp=4500

let discount %be x

sp=mp-discount %of mp=4500-x/100×4500=4500-45x

Step-by-step explanation:

sp with 10%vat=sp+vat%of sp

4400=4500-45x+10/100(4500-45x)

4400-4500=(-450x+(4500-45x)/10

-1000=(-450x+(4500-45x)

-1000-4500=-495x

495x=5500

x=5500/495=11.11%

4 0

3 years ago

A construction company needs to remove 4 1 6 tons of dirt from a construction site. They can remove 8 9 tons of dirt each hour.

andre [41]

Answer:4.674hours

Step-by-step explanation:

1hr-89tons

24hrs-xtons

X=24×89

X=2136tons

24hrs-2136tons

Yhr-416tons

Y=24×416\2136

Y=4.674hrs

8 0

3 years ago

Jimmy successfully factors a quadratic $4x^2 + bx + c$ as \[4x^2 + bx + c = (Ax + B)(Cx + D),\]where $A,$ $B,$ $C,$ and $D$ are

saul85 [17]

Answer:

±1, ±2, and ±4

Step-by-step explanation:

4x² + bx + c = (Ax + B) (Cx + D)

Distribute:

4x² + bx + c = ACx² + (AD + BC) x + BD

Matching the coefficients, AC = 4. So A must be a factor of 4. Possible values of A are therefore ±1, ±2, and ±4.

3 0

3 years ago

Ivan had 1,500 flyers printed to announce the opening of his new coffee shop. He paid $0.06 per flyer he's paying his friends $0

lilavasa [31]

25+6=31
So you have to multiply 0.36 by 1500 to get your answer
Answer is 540
Plz correct me if I’m wrong

5 0

3 years ago

Is 15 over 50 equivalent to 0.3

alexdok [17]

$Yes,\ because\\\\\frac{15}{50}=\frac{15:5}{50:5}=\frac{3}{10}=\boxed{0.3}$

6 0

3 years ago

Read 2 more answers