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lilavasa [31]
4 years ago
10

How do you show work for "What is the standard form for 20,000+80,000+700+6?

Mathematics
1 answer:
olya-2409 [2.1K]4 years ago
3 0

I think you should re-check the question because you might have made a typo.

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Three years ago, Marry was three times as old as his brother. Five years from now he will be twice as old as his brother. How is
chubhunter [2.5K]
3 years ago:
m - 3 = 3(b - 3)
m - 3 = 3b - 9
m + 6 = 3b
m/3 + 2 = b

5 years from now:
m + 5 = 2(b + 5)
m + 5 = 2b + 10
m - 5 = 2b
m/2 - 5/2 = b

combine:
m/3 + 2 = m/2 - 5/2

1. multiply by 6
2m + 12 = 3m - 15

2. add 15 - 2m to both sides
27 = m

Marry is 27 years old.
5 0
3 years ago
Find y of this shape.
Phantasy [73]

Answer:

y = 75

Step-by-step explanation:

The sum of the angles in a quadrilateral = 360°

∠DGF and 80° form a straight angle and are supplementary, hence

∠DGF = 180° - 80° = 100°

Subtract the sum of the 3 angles from 360 for the value of y

y = 360 - (65 + 120 + 100) = 360 - 285 = 75

6 0
3 years ago
The rectangle below has an area of 70 square meters.
nasty-shy [4]

Answer:

The side lengths are 10 by 7

Step-by-step explanation:

The area of a rectangle is

A = l*w

70 = (x - 11)(x - 8)

FOIL

70 = x^2 -8x-11x+88

Combine like terms

70 = x^2 -19x +88

Subtract 70 from each side

0 = x^2 -19x +88-70

0 = x^2 -19x+18

Factor

What number multiplies to 18 and adds to -19

-18*-1 =18

-18-1 = -19

0=(x-18)(x-1)

Using the zero product property

x-18=0   x-1=0

x=18   x=1

But x cannot x=1 because then the side lengths would be negative

x-18 = 10

x-11 = 7

The side lengths are 10 by 7

4 0
3 years ago
Hey, I'm not sure if I'm wrong or not but wouldn't the answer be c divided by pi? or c/pi
dedylja [7]

Answer:

You are correct

It is C divided by PI

Step-by-step explanation:

c=pi x D

Using substitution method replace letters with numbers

12(c)=3(pi) x 4(d)

we want 4(d) the subject of the formula

4(d)=

12/3 =4

so it is 4(d)=12(c)/3(pi)

so D=C/PI

8 0
3 years ago
At the beach, Nardia collected triple the number of seashells that Pierre did. Together, they collected 52 seashells. Which equa
UNO [17]

Answer:

If Nardia is N and Pierre is P an equation that would represent this problem is 52-3n=p

6 0
2 years ago
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