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2 years ago

Can somebody help me with this problem? I'd greatly appreciate it!

Mathematics

2 answers:

alexira [117]2 years ago

8 0

Answer:

-3a²+2ab+b²

Step-by-step explanation:

klasskru [66]2 years ago

5 0

Answer:

-3a^2 + 2ab + b^2

Step-by-step explanation:

Removing the second parentheses makes no difference to the signs inside because their are preceded by a '+'.

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What is the value of w in this equation? <br><br> 15 + w = 75

uranmaximum [27]

Answer:

$w=60$

Step-by-step explanation:

$15+w=75$

Subtract 15 from both sides of the equation.

$15+w-15=75-15$

$w=60$

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2 years ago

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The sum of the first terms of an Arithmetic progression (Ap) is 130.if the fifth term is 3times,the first term,find the (a)commo

Nadusha1986 [10]

Answer:

For part a)

130 = 10/2[2a+(10-1)d]

Simplify, u get

2a + 9d = 26.................(1)

Also U5 = a + (5-1)d = 3a

Simplify, u get

a= 2d...................(2)

Substituting for a in equation 1,

2(2d)+9d= 26

Solving for d, we get

d = 2

In part b) substituting for d in equation 2 to get the first term

a = 2(2) = 4

Part c) the no. of terms required can be obtained by solving

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2 years ago

You can perform 6 push-ups in 24 seconds. Write and

algol13

Answer:

480 push ups

Step-by-step explanation:

24/6 = 4

meaning they are doing 4 push ups per second, this is your slope

the equation of your line is y = 4x, you can graph this using a table of values (i attached a graph tho)

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2 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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