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3 years ago

Can i get some help

Mathematics

1 answer:

Readme [11.4K]3 years ago

6 0

Answer:

Option 3

Step-by-step explanation:

4 is a factor so the answer is.. 4(3a-b-5)

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Can I get some help on these

Rainbow [258]

Number 1.
2x to the second power minus 2x minus 4
Number 2.
2a to the second power minus 3b minus a plus b to the second power.

Hope it helped :)

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2 years ago

Lucy, Sam, and Jim sent a total of 75 text messages over their cell phones during the weekend. Lucy sent 5 more messages than Sa

prohojiy [21]

Jim = 40 messages
Sam = 15 messages
Lucy = 20 messages

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2 years ago

Read 2 more answers

The width of a rectangle is 6 in. less than its length. The perimeter is 68 in. What is the width of the rectangle?

stepan [7]

Length= y in.
Width= (y-6) in.
Perimeter = 2(L*W)
Perimeter=2L+2W
68in.=2(y)+2(y-6)
68=2y+2y-12
68=4y-12
68+12=4y
4y=80
y=20
Length= 20 inches, width =14 inches

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2 years ago

Read 2 more answers

X^2-4x+c find the value of c

Sonbull [250]

Answer:

$c = 4$

Step-by-step explanation:

Given

$x^2 - 4x + c$

Required

Find c

The question is incomplete. However, I'll assume the expression is a perfect square.

To find c, we make use of the following formula

$c = (\frac{b}{2})^2$

Where

$ax^2 + bx + c$

By comparison with $x^2 - 4x + c$

$a =1$

$b = -4$

So, $c = (\frac{b}{2})^2$ becomes

$c = (\frac{-4}{2})^2$

$c = (-2)^2$

$c = 4$

The value of c that makes the expression, $x^2 - 4x + c$ a perfect square is 4 and the expression is: $x^2 - 4x + 4$

8 0

3 years ago

How do I solve this

NemiM [27]

Old - new is 1 so than after that it would be 1/5 than 1/5 x 100 = 20%

6 0

3 years ago