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lakkis [162]
3 years ago
13

lign="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
olga_2 [115]3 years ago
8 0

Step-by-step explanation:

X=7 or x=5

It might be two answer to this question

Rufina [12.5K]3 years ago
3 0

\huge\textsf{Hey there!}

\large\textsf{(x - 7) (x - 5)}

\large\text{DISTRIBUTE each of the numbers}

\large\textsf{x(x) + (-5)x + (-7(x) + (-7)(-5)}

\large\textsf{x(x) =  \bf x}\bf ^2

\large\textsf{x(-5) = \bf -5x}

\large\textsf{-7(x) = \bf -7x}

\large\textsf{(-7)(-5) = \bf 35}

\mathsf{x^2 - 5x -7x + 35}

\large\text{COMBINE the LIKE TERMS}

\mathsf{x^2 -(5x - 7x) + 35}

\mathsf{-5x -7x = \bf -12x}

\mathsf{x^2 - 12x + 35}

\boxed{\huge\text{Answer: \bf x}^2 \huge\text{\bf - 12x + 35}}\huge\checkmark

\large\text{Good luck on  your assignment and enjoy your day!}

~\frak{Amphitirite1040:)}

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14. Of the 400 students in the 8th grade, four-
In-s [12.5K]

Answer:

8 or 9

Step-by-step explanation:

So, you first need to take 4/5 of 400 (320).  Then, you can count by 75s for a bit

75students; 2chaperones

150; 4

225; 6

300; 8

now, you have 20 students left over...since one chaperone would watch about 37 kids, you can either divide the remaining kids up among the other chaperones, or you can add one more chaperone to watch the 20 kids.  i don't know what the teacher wants, so either 8 or 9 chaperones

7 0
3 years ago
Read 2 more answers
A ball is thrown upward from the top of a building. The function below shows the height of the ball in relation to sea level, f(
gavmur [86]
We have the following function:
 f(t) = −16t2 + 34t + 546
 By definition, the average rate of change is:
 Avr = (f (t2) - f (t1)) / (t2 - t1)
 We have then:
 For t1 = 5:
 f (5) = -16*(5)^2 + 34*(5) + 546
 f (5) = 316
 For t2 = 5:
 f (7) = -16*(7)^2 + 34*(7) + 546
 f (7) = 0
 Substituting values:
 Avr = (0 - 316) / (7 - 5)
 Avr = -158
 Answer:
 The average rate of change of f (t) from t = 5 seconds to t = 7 seconds is -158 feet per second.


6 0
3 years ago
How many times does 7 go into 19
Svetllana [295]
7 goes into 19 2 complete times.  7*2=14, but 7*3=21

the true answer is a decimal, one around 2.71
6 0
3 years ago
Simplify 18/5 to get the answer
Inga [223]
5\frac{3}{5}
4 0
3 years ago
A measure of ________ for a numerical data set describes how its values vary with a single number
uysha [10]
The answer is variation.
6 0
3 years ago
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