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Zigmanuir [339]
4 years ago
10

Which expressions are equivalent to 10 a − 25 + 5 b

Mathematics
1 answer:
Ludmilka [50]4 years ago
4 0

Answer: 10a^2 - 25 + 5b

Step-by-step explanation: Only you have to elevate all the numbers and expressions to the potence 2

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the present age of prisca and Ashmaal are in ratio 2:3 . After 4 yrs the ratio of their ages will be 4:5 the present age of pris
Solnce55 [7]

Answer:

he Present age of Prisca will be 4 years  .

Step-by-step explanation:

Given as :

The ratio of present age of Prisca and Ashmaal = 2 : 3

Let The present age of Prisca = 2 x  years

Let The present age of Ashmaal = 3 x  years

After 4 years , the ratio of present age = 4 : 5

i.e \frac{ 2 x + 4}{3 x + 4} = \frac{4}{5}

Or,  5 × (2 x + 4) = 4 × (3 x + 4)

Or, 10 x + 20 = 12 x + 16

Or, 12 x - 10 x = 20 - 16

Or, 2 x = 4

∴  x = \frac{4}{2}

i.e x = 2

So, The present age of Prisca = 2 x = 2 × 2 = 4 years

And The present age of Ashmaal = 3 x = 3 × 2 = 6 years

Hence, The Present age of Prisca will be 4 years  . Answer

4 0
4 years ago
Which data set has a relatively low mean and variability when compared with a data set that has a mean of 20 and a MAD of 3.1? A
Luden [163]

Answer:

Mean: 8 and MAD: 1.2

Step-by-step explanation:

Given a data with :

Mean = 20 ; mean absolute deviation (MAD) = 3.1

DATA with a low mean and variability Than The above from the options given :

The most appropriate option is : Mean: 8 and MAD: 1.2 ; because both values of the mean and mean absolute deviation are lesser than the value given.

5 0
3 years ago
How would I be able to solve this using long division?
Trava [24]

Answer:

shown and pictured all work

4 0
4 years ago
Can anyone help please?
eduard

Answer:

2x+y=5.

Step-by-step explanation:

slope(m)=-2

passed through point (0,5)=(x1,y1)

then

the equation is

(y-y1)=m(x-x1)

or (y-5)=-2(x-0)

or (y-5)=-2x

or 2x+y=5 is the equation.

4 0
3 years ago
Help me please, brainliested :)
JulijaS [17]

Answer:

y=-1/3x-3

Step-by-step explanation:

8 0
3 years ago
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