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Marizza181 [45]
3 years ago
13

PLEASE HELP MIDDLE SCHOOL MATH​

Mathematics
1 answer:
snow_tiger [21]3 years ago
3 0

Answer:

x>=5

Step-by-step explanation:

If x is less than five, then there will be a negative in the square root, which will yield x an  imaginary number.

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Luke invited 20 more boys than girls to his birthday party. However, only ¾ of the boys and ⅔ of the girls came. Exactly 19 of L
sveta [45]

Answer:

68

Step-by-step explanation:

Let:

Number of girls invited = x

Number of boys = x +20

3/4 of boy showed up

2/3 of girls showed up

Exactly 19 did not show up

Therefore, we could say:

Fraction of boys that didn't show up = 1 - 3/4 = 1/4

Fraction of girls that didn't show up = 1 - 2/3 = 1/3

That is,

[1/4 *(x + 20)] + [1/3*x] = 19

[(x + 20) / 4] + x /3 = 19

(3(x + 20) + 4x) / 12 = 19

3x + 60 + 4x = 228

7x = 228 - 60

7x = 168

x = 168 / 7

x = 24

Number of girls, x = 24

Number of boys, x + 20 = 24 + 20 = 44

Total friends invited = (24 + 44) = 68

8 0
3 years ago
2x + 9 = 5x + 4 solve for x plsssss
professor190 [17]

Answer:

X= 5/3

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
True or False: Perpendicular lines consist of two intersecting lines that form a 30 degree angle.
Leona [35]

Answer:

False if i'm wrong so sorry!!

Step-by-step explanation:

4 0
2 years ago
Please help! Correct answer only, please! Consider the matrix shown below: Find the inverse of the matrix A: (i.e Find A^-1).
Step2247 [10]

Answer:

Hello There Again. The correct answer is D.

Explanation: Why is D. Because 5x2=10 which everyone know that 5x2=10x3x1=30 So the best choice will be D.

Hope It Helps!

3 0
3 years ago
What are the factors of x2 – x – 6? Check all that apply.
Zina [86]
The factors would be (x-3)(x+2)
5 0
2 years ago
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