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3 years ago

Simplify this expression???

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

4 0

Answer:

(D)

Step-by-step explanation:

Given data:

$(7^{-8} )^{-4}$

Applying rule :

$(a^{m} )^{n} =a^{mn}$

Therefore,

$7^{(-8)(-4)} =7^{32}$

Answer will be $7^{32}$

Option (D) is correct

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6. A line passes through the points (-2,5) and (6,9). Calculate the gradient of this line.

Mumz [18]

Answer:

d 2.5 line is 6.9 which is 9.4

Step-by-step explanation:

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7 0

3 years ago

4(2n + 3) =44 pls someone help me with this??

Whitepunk [10]

Answer:

n = 4

Step-by-step explanation:

4(2n + 3) = 44

Expand the brackets.

4(2n) + 4(3) = 44

8n + 12 = 44

Subtract 12 on both sides.

8n + 12 - 12 = 44 - 12

8n = 32

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6 0

3 years ago

a concession stand sells bags of popcorn for 3$ and cotton candy for 2$. a customer purchased bags of popcorn as well as cotton

scZoUnD [109]

Answer:

Step-by-step explanation:

12$-3$-3$=6 meaning they spent 6 Dollars on popcorn, and now have 6 left to spend, and with the cotton candy being $2 each, that means they bought 3 cotton candys

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8 0

3 years ago

Just I need help ASAP

g100num [7]

Answer:

x≤3 or x>10

Step-by-step explanation:

x≤3 because the dot is a solid dot at 3 and pointing backward toward numbers less than 3.

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6 0

3 years ago

Un comerciante de algodón de azúcar gana 40 cm por cada algodón vendido pero si no lo logra venderlo pierde 50 céntimos. un día

gayaneshka [121]

Answer:

He fails to sell that day 10 cottons.

Step-by-step explanation:

We are given that a cotton candy merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents.

One day when he made 120 cottons, he made a profit of 39 soles.

Let the number of cottons merchant is able to sold be 'x' and the number of cottons merchant is not able to sold be 'y'.

So, according to the question;

The first condition states that he made 120 cottons on one day, that is;

x + y = 120

x = 120 - y ---------------------- [Equation 1]

The second condition states that merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents and due to which he made a profit of 30 soles, that is;

$0.40x - 0.50y=39$