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Andreas93 [3]
3 years ago
12

Help?,?,?,?.!.??.?.?.?.?.?.

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

Answer:

Step-by-step explanation:

b(a + 1) + a = b*a + b + a = ab + b + a

1) b(2a +1 ) = b*2a + b*1 = 2ab + b  Not equivalent.

2)a + (a +1)*b = a + ab+ b     Equivalent

3) (a +1)(b+ a) = a*(b +a) + 1*(b+a) = ab+ a² +b + a  Not equivalent.

4) (a + 1)b + a = ab+ b + a   Equivalent

5) a + b(a+1) = a +ab + b Equivalent

6) a + (a +1) + b = a + a + 1 + b = 2a + 1 +b  Not equivalent.

7) a(b +1) + b = ab + a + b  Equivalent

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A 2-digit number with x units and 7 less units than tens.
Hatshy [7]
Each two digit number has two numbers (duh!). Let's allow the tens digit to be x and the units digit to be y. Tens digit is 3 less than the units digit: x = y-3 Original number is 6 more than 4 times the sum of the digits: 10x+y-6 = 4x + 4y This gives us simultaneous equations!First let's clear the mess: 1. x= y-32. 6x-3y=6 Substitute 1 into 2: 6(y-3) -3y =66y - 18 - 3y = 6
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2 years ago
Can 8/45 be simplified as a fraction
max2010maxim [7]

Answer:

Step-by-step explanation:

isn't it already a fraction or is it a division

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the answer is 5 and 2/8

8 0
3 years ago
Write as a fraction.
lesantik [10]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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Find the area of the circle r=14m use pi=3.14 and round your answer to the nearest hundredth
pantera1 [17]

Answer:

<h2>The answer is 615 m²</h2>

Step-by-step explanation:

Area of a circle = πr²

where

r is the radius

From the question

r = 14 m

π = 3.14

The area of the circle is

A = 3.14 × ( 14 ) ²

= 3.14 × 196

= 615.44

We have the final answer as

<h3>615 m² to the nearest whole number</h3>

Hope this helps you

7 0
3 years ago
Help MATH ASAP MARKING BRIANLIT!!
FinnZ [79.3K]

Answer:

-41

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The change is -2

(-2*20)-1 = -41

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3 years ago
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