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nadya68 [22]
3 years ago
5

Help me please I will give brainlest!

Mathematics
2 answers:
Makovka662 [10]3 years ago
8 0
2(x+7)3X



I think... look it up  though to be sure
STALIN [3.7K]3 years ago
8 0
Part 1: Write your equation
The question is asking for you to put "twice the sum of a number and seven is three times the number" into math. 

1) "is" means equal to, calling for the "=" sign
2) "a number" is what you're trying to find, aka the variable. Let's call this variable "n."

1) On the left of "is"/the equal sign, you have "twice the sum of a number and seven." That means two times (aka twice) the sum of the variable n (aka the number) and seven. In math, that would be:
2*(n + 7)

2) On the right of "is"/the equal sign, you have "three times the number." That means three times the variable n (aka the number). In math that would be:
3*n

3) Put that all together to get your final equation:
2(n + 7) = 3n


Part 2: Solve the equation for your number, aka "n"
1) Distribute the 2 to the n and the 7 using the distributive property
2(n + 7) = 3n
2*n + 2*7 = 3n
2n + 14 = 3n

2) Move everything with n to one side of the equal sign by subtracting 2n from both sides:
2n + 14 = 3n
14 = n

The missing number is 14.

---------

Answer
Equation: 2(n + 7) = 3n
Missing Number: 14



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Drag and drop each pair of lines to categorize them as either parallel, perpendicular, or neither.
miss Akunina [59]
Answer:
first box is parallel
Second box perpendicular
Third box neither
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Fifth box perpendicular
Sixth box is parallel

Why? Slopes of parallel lines are the same. Slopes of perpendicular lines are opposite reciprocals. (Example slope=1/2 a perpendicular line would be -2/1). Neither is just a when it’s not either parallel or perpendicular.

Hope this helps
8 0
3 years ago
ANSWER QUICKLY PLEASEEEE
Nitella [24]

Answer:

it would be c

Step-by-step explanation:

7 0
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I need assistance!!!!
erastovalidia [21]

Answer:

Step-by-step explanation:

Because midpoints were used to make similar triangles we can say

AC=2(DE)

5x+12=2(9x-20)

5x+12=18x-40

-13x+12=-40

-13x=-52

x=4

AC=5x+12

AC=5(4)+12

AC=20+12

AC=32

3 0
3 years ago
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Carlos walked to school on 14 of the 20 school days in February
Kruka [31]
70% all you have to do is divide the 14 by 20
5 0
3 years ago
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What’s the answer for #11 @HavannaS? Spent 20 min and clueless, thank you!!!!!!
Elis [28]
Angle 2=3, so angle 1=4 because angles ABC & BCD equal 90°. When you add together the angles of a triangle you get 180 and if you could put angle 1 and 4 together it would look like an upward version.



That is the best way I could describe it. Hope that helps.
8 0
3 years ago
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