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3 years ago

9

Why do you need to find common denominators simplify your equation

1 answer:

Daniel [21]3 years ago

4 0

Finding common denominators allows you to more easily get your answer for the problem. fractions are complex as it is if you have a denominator of 16 and 4 your immediate reaction would be to just subtract the process and answer would be completely wrong.

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Answer the question.thank you

dlinn [17]

Answer:

Perimeter of Triangle: $6x+15$

$x=12.5$

Step-by-step explanation:

The perimeter is the sum of all of the sides of the triangle.

Hence, the perimeter $=3x+3x+15=6x+15$

Since the perimeter is 90, $6x+15=90$ .

Subtract 15 from both sides:

$6x+15-15=90-15$

$6x=75$

Divide both sides by 6:

$\frac{6x}{6}=\frac{75}{6}$

$x=12.5$

4 0

2 years ago

I need some help with this

masya89 [10]

Answer:

A, C, D

Step-by-step explanation:

Consider triangles NKL and NML. These triangles are right triangles, because

$m\angle K=m\angle M=90^{\circ}$

In these right triangles:

$\overline{NL}\cong \overline {NL}$ - reflexive property;
$\angle KLN\cong \angle MLN$ - given

Thus, triangles NKL and NML by HA postulate. Congruent triangles have congruent corresponding parts, so

$\overline{KN}\cong \overline{NM}\\ \\\overline{KL}\cong \overline{LM}\ [\text{option D is true}]$

Since

$\overline{KN}\cong \overline{NM},$

then

$7x-4=5x+12\\ \\7x-5x=12+4\\ \\2x=16\\ \\x=8\ [\text{option A is true}]\\ \\MN=KN=7\cdot 8-4=56-4=52\ [\text{option C is true}]$

Option B is false, because KN=52 units.

Option E is false, because LN is congruent KN, not LM

4 0

2 years ago

Which of the following statements is true about the number 30/2?

olga nikolaevna [1]

Answer:

It's A :)

Step-by-step explanation:

30/2 is 15

15 is a whole number so it applies to everything except for irrational numbers

Hope this helps :)

5 0

2 years ago

F Andre sold 16 magazine subscriptions this week, would he reach his goal? Explain your reasoning.

Misha Larkins [42]

Answer:

What are some other numbers of magazine subscriptions Andre could have sold and still reached his goal?

Write an inequality expressing that Andre wants to make at least $68.

Write an inequality to describe the number of subscriptions Andre must sell to reach his goal.

8 0

2 years ago

a local basketball court dimensions are 50 ft long, 20 ft wide, the court is lost square footage by 1/4. what are the new dimens

VikaD [51]

50x20=1000

1000x(1/4)=250

1000-250=750ft^2

3 0

3 years ago