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Kruka [31]
2 years ago
7

What is the value of 3x^2 + 5x + 25 when x = 3

Mathematics
2 answers:
Leno4ka [110]2 years ago
6 0

Answer: 121

Step-by-step explanation:

yarga [219]2 years ago
5 0

Answer:67

Step-by-step explanation:

Plug 3 in for X in the equation.

3(3)^2 + 5(3) +25=

3(9) + 15 +25=

27+15+25=

42+25= 67

So when x=3, the value of the equation is 67.

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Answer:

B

Step-by-step explanation:

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2 years ago
Reading test is compared for two students. The mean of Alice's reading test is 82. The mean of Adam's reading test is 85. What c
zalisa [80]

Answer:

i think it's

Adam averages better than Alice

Alice averaged less than Adam

Step-by-step explanation:

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2 years ago
Read 2 more answers
A bookstore makes a profit of $2.50 on each book they sell, and $0.75 on each magazine they sell. One week, the store sold x boo
marin [14]

Answer:

Total books sold=146 books

Total magazines sold=114 magazines

Step-by-step explanation:

Equation 1

Total weekly profit=(Profit for each magazine sold×Number of magazines sold)+(Profit for each book sold×Number of books sold)

where;

Total weekly profit=$450

Profit from each magazine sold=$0.75

Number of magazines sold=y

profit from each book sold=$2.50

Number of books sold=x

Replacing;

450=(0.75×y)+(2.5×x)

0.75y+2.5x=450.....  Equation 1

Equation 2

Total number of publications sold=Total number of books sold+Total number of magazines sold

where;

Total number of publications sold=260

Total number of books sold=x

Total number of magazines sold=y

x+y=260...   Equation 2

Combine equation 1 and 2 and solve;

1(2.5x+0.75y=450)>>>>>>>>2.5x+0.75y=450

2.5(x+y=260)        >>>>>>>>2.5x+2.5y=650

Subtract equation 1 from 2

(2.5x-2.5x)+(2.5y-0.75y)=(650-450)

1.75y=200

y=200/1.75

y=114

Replacing the value for y in equation 2

x+114=260

x=260-114=146

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8 0
2 years ago
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Answer:

D: 2y = 8x - 10  

Step-by-step explanation:

A:  y = 4x + 5. This has a slope of -4 Yes it could work.

B:  y = 4x - 5. No It does not work

C: 2y = 8x - 10. The slope is 8/2 = 4. So No it could not work.

<u>D: -2y = 8x - 10. The slope is 8/-2 = -4. Yes This Does work!  :)</u>

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8 0
3 years ago
There are 180 calories in 3 scoops of vanilla ice cream. How many calories are in 7 scoops.
harkovskaia [24]

Answer:

420 calories

Step-by-step explanation:

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60 x 7 =420 calories

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3 years ago
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