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aivan3 [116]
3 years ago
7

PLZ HELP I WILL GIVE BRAINLIEST

Mathematics
2 answers:
snow_tiger [21]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

(a)

The student has distributed the second parenthesis by 1 instead of - 1

(b)

Given

(x² - 3x + 4) - (x³ + 7x - 2)

distribute the first parenthesis by 1 and the second by - 1, that is

= x² - 3x + 4 - x³ - 7x + 2 ← collect like terms

= - x³ + x² - 10x + 6

Art [367]3 years ago
3 0

Answer:

a. the sign is interchange

it should be = x^2 - 3x + 4 - x^3 - 7x + 2

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At a restaurant the ratio of kids meals sold to adult meals was 8 to 5 if there were 72 kids meals sold how many adult meals wer
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Answer:

45

Step-by-step explanation:

There were 72 kids meals sold which is represented by 8 parts of the ratio.

Divide by 8 to find the value of one part of the ratio

72 ÷ 8 = 9 ← value of 1 part of the ratio, thus

5 × 9 = 45 ← number of adult meals sold

6 0
4 years ago
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Idk how to do this math problem...can u plz help?​
liberstina [14]

Answer:

F) A=(12*12)+((6*12)/2)

Step-by-step explanation:

We can find the answer by breaking up the area into to parts: the square and the triangle

To find the area of the square we use the formula length * width or side^2

This gives us 12*12 which is shown in the first part of each equation

To find the area of the triangle, we must use the formula A= (base * hight)/2

We know the hight is 12 because the hight is the same as the hight or side length of the square, but we still need to find the length of the base of the triangle

Since we know the total length of the bottom of the combined square and triangle is 18 and we know the side length of the bottom of the square is 12 (given to us at the top side of the square and we know the side of a square are of equal length)

Using this information to find the length of only the triangle base we can say

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Hope this helps :)

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nignag [31]

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