3 years ago

I’ll mark brainliest !! Please help me with these answers

Mathematics

1 answer:

Galina-37 [17]3 years ago

4 0

Answer:

Problem1= a Problem 2=a

Step-by-step explanation:

Hope this helps

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Four decreased by the product of a number and 7 is equal to 11

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Step-by-step explanation:

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Viktor [21]

Answer:

1) D

2) D

Step-by-step explanation:

1. Use 360 - x˚ - y˚ - 117˚ - 62˚

2. Recognize that 1) can be either 62 or 63

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Find the 7th term of the geometric sequence whose common ratio is 1/2 and whose first term is 5

Alchen [17]

Answer:

Step-by-step explanation:

We are given that:

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3 years ago

Can someone help me with this one

bonufazy [111]

Answer:

$x(2x+1)(x-2)$

Step-by-step explanation:

$x(2x^2-3x-2)$

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3 years ago

If you place a 89-foot ladder against the top of a 80-foot building, how many feet will

Nuetrik [128]

Answer:

$\large \boxed{\text{39 ft}}$

Step-by-step explanation:

Let x be the distance from the foot of the ladder to the base of the building.

We have a right triangle, so we can use Pythagoras' Theorem.

$\begin{array}{rcl}80^{2} + x^{2}& = & 89^{2} \\6400+ x^{2} & = & 7921\\x^{2} & = & 1521\\x & = & \sqrt{1521}\\& = &\mathbf{39}\\\end{array}\\\text{The foot of the ladder will be $\large \boxed{\textbf{39 ft}}$ from the base of the building,}$

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