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jasenka [17]
2 years ago
10

Please help. I don’t understand or know how to do it.

Mathematics
1 answer:
Nitella [24]2 years ago
7 0
150×8=? ×60×40=?????
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Please help! 20 points and brainly!!
boyakko [2]

Answer: 7/21 is the answer because 7 * 2 = 14 and 21*2=42

Step-by-step explanation:

3 0
2 years ago
6) Work out 4 x 10-5 x 6 x 1012<br>Give your answer in standard form.​
julia-pushkina [17]

Answer:

4 × 5 × 6 × 1012 = 121440

= 1.2 × 10⁵

5 0
2 years ago
A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the person's weight, in pounds, when rounded to th
Vlada [557]

Answer:

you multiply 0.45kg by 87kg you will get 39lb

8 0
2 years ago
Sahra is three times as old as her daughter. If the sum of their age is 32. what is the age of the daughter?​
Andrews [41]
So Sahra is 3 times as old as her daugter. That means that the sum of their age is the daughters age times 4.
We can prove that by saying the daughters age is x. Sahra's age must be 3x. Their sum must be x+3x = 4x.
So to get the daughters age we divide the sum by 4, which is 8.
8 0
3 years ago
Read 2 more answers
Solve the systems by the addition method 2x + y = - 1x - 2y = - 4
inna [77]

Answer:

x = -6/5

y =7/5

Step-by-step explanation:

2x + y = - 1

x - 2y = - 4

Multiply the first equation by 2 so we can eliminate y

2(2x + y = - 1)

4x + 2y = -2

Add this to the second equation

4x + 2y = -2

x - 2y = - 4

---------------------

5x + 0y = -6

Divide by 5

5x/5 = -6/5

x = -6/5

Multiply the second equation by -2 so we can eliminate x

-2(x - 2y = - 4)

-2x+4y = 8

Add this to the first equation

2x + y = - 1

-2x+4y = 8

---------------------

0x + 5y = 7

Divide by 5

5y/5 = 7/5

y =7/5

6 0
3 years ago
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