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navik [9.2K]
2 years ago
12

What is the answer to this following equation x^2-4​

Mathematics
1 answer:
77julia77 [94]2 years ago
6 0
The answer is (x+2)(x-2)
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Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo
Travka [436]

Answer: Option D

D. 880 = 45d + 70; 18\ days

Step-by-step explanation:

We know that the cost of preschool is $ 45 per day plus a monthly fee of $ 70.

We also know that a total of $ 880 was paid last month

To write an equation that represents this situation, let us call "d" the number of days that Barry attends school

So the cost was:

45d + 70 = 880

Now we solve the equation for the variable d

45d= 880-70

d= \frac{810}{45}

d= 18\ days

Therefore answer is the option D

8 0
3 years ago
Nick can read 3 pages of his book in 1 minute. At this rate how many pages can he read in 30 minutes?
g100num [7]

Answer:

90

Step-by-step explanation:

3/1=3

30x3=90

5 0
3 years ago
Simplify this expression.<br><br> 20.25−912+11
DIA [1.3K]

Answer:

-880.75

Step-by-step explanation:

Subtract 912 from 20.25 first then add 11.

7 0
3 years ago
Read 2 more answers
Please answer the problem below.<br><br> ~Thanks = )
RoseWind [281]

Hi GlaxyCraft4991,

Solution:

−12x − 0.4 > 0.2 (36.5x + 80) − 55

−12x − 0.4 > 7.3x − 39

−12x − 0.4 − 7.3x > 7.3x − 39 − 7.3x

−19.3x − 0.4 > −39

−19.3x − 0.4 + 0.4 > −39 + 0.4

−19.3x > −38.6

−19.3x/19.3 > −38.6/19.3

x < 2

Correct Answer:

x < 2

3 0
3 years ago
Please help on this I’m too dum
bezimeni [28]
For the first question, simply find a point that is on the line segment. For the second question, knowing that in quadrant iii the x values are negative and the y values are also positive using this fact find the point that has x negative and y positive.





7 0
3 years ago
Read 2 more answers
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