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Bingel [31]
3 years ago
11

Will give brainliest if correct.

Mathematics
1 answer:
azamat3 years ago
3 0

Answer:

y=(-9-2x)/3

Step-by-step explanation:

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Sanjay graphs a quadratic function that has x-intercepts of –3 and 7. Which functions could he have graphed? Check all that appl
zvonat [6]
X-intercepts are found by factoring.  Use the quadratic formula on the first since it's in standard form and you find that your x values are in fact -3 and 7.  For the second one, use the Zero Product Property that says that x - 3 = 0 or x + 7 = 0.  Therefore, x = 3 and -7.  Signs are wrong.  So not the second one.  As for the third one, if you factor out a 3, your polynomial is exactly the same as the first one which did give us the desired x values.  So the third one checks out.  If you FOIL out the first one and then apply the quadratic formula you do get x = 3 and -7. So the fourth one checks out too.  For the last one, putting it into the quadratic formula gives you x values of 3 and -7, so no to that one.  Summary:  1st, 3rd, 4th have zeros of -3 and 7; 2nd and 5th do not.
6 0
3 years ago
Read 2 more answers
Evaluate the expression.
Alekssandra [29.7K]

Step-by-step explanation:

9.(12/3)²

9.(144/9)

[The 9 in numerator and the 9 in denominator can be cancelled]

144

the answer is 144

Please mark me as brainliest

4 0
2 years ago
A density graph is used to find the probability of a discrete random variable
IRINA_888 [86]

Answer:

False

Step-by-step explanation:

This is false because A density graph is not used to find the probability of a discrete random variable taking on a range of values. This is because you have to use a calculations instead of a graph. The correct how to calculate is: Determine a single event with a single outcome. Identify the total number of outcomes that can occur. Divide the number of events by the number of possible outcomes.

Therefore, it's B ( false).

4 0
3 years ago
Lata has collected 75 pennies, Lata's father says that if she arranges the pennies in 15 rows, Lata will be able to make a recta
tigry1 [53]

Answer:

Yes, Her father is correct.

Step-by-step explanation:

75/15=5 which means that there will be fifteen rows, with five pennies in each row. Since one side has 5 pennies and the other has fifteen, the sides are different and form a rectangle. To check your work, you can do 15*5 which equals 75 the rectangle of pennies should look like this:

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

4 0
3 years ago
Serena has 3 necklaces, 6 pairs of earrings, and 4 bracelets in her jewelry box. How many different combinations of a necklace,
Ugo [173]
13 different combinations
4 0
3 years ago
Read 2 more answers
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