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kompoz [17]
2 years ago
9

PLEASE HELP!! WILL GIVE BRAINLYEST AWARD TO 1st RIGHT!!

Mathematics
2 answers:
siniylev [52]2 years ago
7 0

Answer:

-11 < x < 7

(first option listed)

Step-by-step explanation:

we know that x² + 4x < 77

first, we should rewrite our expression in standard

x² + 4x - 77 < 0

factor {find two numbers that multiply to c (77) and add to b (4)  }

(x - 7) (x + 11) < 0

set both roots to 0:

x - 7 < 0

  + 7  + 7

x < 7

x + 11 < 0

x > -11

so, x will be < 7 and > -11

which can be expressed as

-11 < x < 7

So, -11 < x < 7

pishuonlain [190]2 years ago
5 0

Answer:

-11 < x < 7

Step-by-step explanation:

1st option;

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Help please WILL GIVE BRAINLIEST TO RIGHT ANSWER!​
Tcecarenko [31]

Answer:

I think A is the answer

but D is the correct answer "kunno"

Step-by-step explanation:

hope it helps :)

4 0
3 years ago
Read 2 more answers
△ABC △ABC  is similar to △LMN △LMN . Also,  side AB measures 5 cm,  side AC measures 7 cm, and  side L​M measures 35 cm.
dolphi86 [110]
You need to apply "Proportionality theorem" here:
LM / AB = LN / AC
35 / 5 = LN / 7
LN = 7 * 7
LN = 49

In short, Your Answer would be 49 cm

Hope this helps!
4 0
3 years ago
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Find the circum center of a triangle whose vertices are (-2, -1) , (-1, 6 ) and (2, 7).​
lina2011 [118]

Answer:

(-1/3; 4)

Step-by-step explanation:

(-2, -1) , (-1, 6 ) and (2, 7).​

x=(-2-1+2)/3= -1/3

y=(-1+6+7)/3=12/3=4

=> (-1/3; 4)

7 0
3 years ago
Which of the following is a step in constructing angle bisectors using a compass and straight edge? a Construct a copy of the li
motikmotik

Answer:

start with a line segment to divide into equal parts

Step-by-step explanation:

that's the first step you take before you make the angle bisector because there's no point in doing the other steps before that

8 0
3 years ago
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A rectangle’s length is 6 more than 4 times its width. If the perimeter is 42, how long is the rectangle
Ainat [17]

The Length of the rectangle is 18 unit.

<h3>What is the Perimeter of a Rectangle?</h3>

Perimeter of rectangle = 2(length + width)

Given the following:

Let x represent the width of the rectangle

Width of the rectangle = x

Length of the rectangle = 4x + 6

Perimeter of rectangle = 42 units

Therefore, we would write the following equation to find x based on the formula for finding the perimeter of a rectangle:

2(4x + 6 + x) = 42

2(5x + 6) = 42

10x + 12 = 42

10x = 42 - 12

10x = 30

10x/10 = 30/10

x = 3

The width (x) = 3.

Length of the rectangle = 4(3) + 6

Length of the rectangle = 18 unit.

Learn more about perimeter of rectangle on:

brainly.com/question/24571594

#SPJ1

7 0
2 years ago
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