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alex41 [277]
4 years ago
10

Zacharias is using the quadratic formula to solve the equation 0 = –2x2 5x – 3. he begins by substituting as shown.quadratic for

mula: x = substitution: x = what error did zacharias make?the –5 should be 5. the 52 should be –52.the 2 in the numerator should be –2.the 2 in the denominator should be –2.
Mathematics
2 answers:
Triss [41]4 years ago
6 0

Answer:

The 2 in the denominator should be –2.

Step-by-step explanation:

a=-2 and Zacharias did not include the negative.

aliya0001 [1]4 years ago
3 0

Answer:

D is the answer

Step-by-step explanation:

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Members of the Wide Waters Club pay
vivado [14]

Answer:

The number of times members and non-members will have to rent a boat in order to pay the same amount=20

Step-by-step explanation:

We can have two expressions to show the total cost paid by a member and non-member;

Total cost by member=Cost per summer season+cost per number of times they rent a boat×number of times they rent a boat

where;

Cost per summer season=$105

Cost per number of times they rent a boat=$9.50

Number of times they rent a boat=n

Replacing;

Total cost by a member=105+(9.5×n)=9.5 n+105......equation 1

Total cost by a non-member=Cost per number of times they rent a boat×number of times they rent a boat

where;

Cost per number of times they rent a boat=$14.75

Number of times they rent a boat=n

Replacing;

Total cost by a non-member=(14.75×n)=14.75 n......equation 2

To calculate the number of times they would have to rent a boat in order to pay the same amount, we equate equation 1 to equation 2

9.5 n+105=14.75 n

14.75 n-9.5 n=105

5.25 n=105

n=105/5.25

n=20

The number of times members and non-members will have to rent a boat in order to pay the same amount=20

6 0
4 years ago
PLS help meeeeeeee!!!!!! will mark as BRAINLIEST
Zolol [24]

We are asked to find 7 is what percent to 30.

We will use proportions to solve our given problem.      

Let us assume that 7 is n% of 30. So we can set a proportion as:

\frac{n}{100}=\frac{7}{30}

Let us solve for n.

\frac{n}{100}\cdot 100=\frac{7}{30}\cdot 100

n=\frac{7}{3}\cdot 10

n=\frac{70}{3}

n=23.333

Therefore, 7 is 23.333\% of 30.

3 0
3 years ago
19. Hillary buys 3 pounds of Gala apples and some Granny Smith apples.  Both kinds of apples cost $4.50 per pound. The total cos
GarryVolchara [31]

Answer:

2.5 pounds of Granny Smith apples.

Step-by-step explanation:


7 0
4 years ago
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What shape is this I need help
professor190 [17]

Answer:

Pyramid/Triangle Prism

Step-by-step explanation:

pyr·a·mid

/ˈpirəˌmid/

Learn to pronounce

See definitions in:

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Archaeology

Egyptian History

Geometry

Anatomy

Finance

noun

1.

a monumental structure with a square or triangular base and sloping sides that meet in a point at the top, especially one built of stone as a royal tomb in ancient Egypt.

2.

an object, shape, or arrangement in the form of a pyramid.

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3 years ago
What is the mean of the set of data given below? 13 8 9 6 10 8​
olga_2 [115]

Answer:

Mean = The numbers added up and divided by the number of numbers.

Step-by-step explanation:

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= 54 / 6

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The mean is 9.

8 0
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