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elena-s [515]
3 years ago
5

Carlos had $41 when he went to a bookstore. He had $10 left after buying some books. Which equation can be used to find a, the a

mount Carlos spent on books?​
Mathematics
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

$41 - $a =$ 10

Step-by-step explanation:

$41 - $a =$ 10

$a = $ 41 - $10

$a= $ 31

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Combine like terms.<br> 3y + y + 6y<br> A. 10y<br> B. 8y<br> C. 9y-y<br> D. 2y
a_sh-v [17]

Answer: Its A.) 10y


Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Am I correct? (Perfect Square Form)
natka813 [3]

Answer:

(x -3 )^2 = 10

Step-by-step explanation:

Given

x^2 - 6x - 1 = 0

Required: Express as a perfect square

x^2 - 6x - 1 = 0

Add 10 to both sides

x^2 - 6x - 1 +10= 0+10

x^2 - 6x +9= 10

Expand

x^2 - 3x  - 3x+9= 10

Factorize:

x(x - 3) - 3(x  - 3)= 10

Factorize:

(x -3 )(x - 3) = 10

(x -3 )^2 = 10

8 0
3 years ago
Jocelyn purchased a new car in 2000 for $16, 100. The value of the car has
Maslowich
I think its 900 i’m not sure
7 0
2 years ago
Convert 6 2/5 to a percent?<br><br>A) 6.4%<br>B) 64%<br>C) 640%<br>D) 6,400%​
777dan777 [17]

Answer:

C) 640%

Step-by-step explanation:

6 2/5

Convert it to an improper fraction -

6 2/5 = 32/5

Convert the improper fraction to a decimal -

32/5 = 6.4

Multiply 6.4 by 100

= 640%

Hope this helps :)

4 0
3 years ago
Read 2 more answers
#16 and #19 only <br> Please answer both as soon as possible.
Vlad1618 [11]

Answer:

1. it is not a direct variation because the value <em>k</em> is not kept throughout the ordered pairs

2. -a^5 - 2a³ + 2a², leading coefficient is -1

Step-by-step explanation:

1. to find the direct variation, we will use y/x = k with k representing our constant throughout the chart. if every value is equal to k, it is a direct variation

for this problem we will assume that the cup sizes are x and the cost is y

so the ordered pairs are (8, 0.90), (12, 1.35), (16, 1.80), and (24, 2.25)

.90/8 = 0.1125 <-- this is our <em>k</em> value for which every result has to be equal to

1.35/12 = 0.1125

1.80/12 = 0.1125

2.25/24 = 0.09375

since the value <em>k</em> was not kept throughout the ordered pairs, this is not a direct variation

2. the standard form of a polynomial is the exponents in descending order.

we have the following polynomial: 2a² - a^5 -2a³

to write it in standard form, we will go in descending order of the exponents. the largest exponent being first

-a^5 - 2a³ + 2a²

the leading coefficient of the polynomial is -1, as there is a negative sign in front of the newly formed polynomial

4 0
3 years ago
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