3 years ago

Which property would allow you to use mental computation to simplify the problem 23 + (7 + 9)?

Mathematics

1 answer:

ser-zykov [4K]3 years ago

5 0

Associative property of addition

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If the starting number is 30 and the rule is "minus five", what is the formula and what is the 20th number in the sequence?

Mnenie [13.5K]

Answer:

y = -5x + 30, 20th number is -70.

Step-by-step explanation:

All you have to do is look at how much the equation is growing by and what the starting number is for the equation. to find the 20th figure, you plug 20 in for x and get -70.

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3 years ago

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Use the whole numbers 1 through 9 only one time each to find the largest possible value for x

Verdich [7]

Answer:

x=9

Step-by-step explanation:

1(x)+0=9

Why?

Because the larger the coeffient, the smaller x gets.

1x=9

x=9

2x=9

x=4.5

3x=9

x=3

You wouldn't want to add any number either, but conviniently, whole numbers also include 0

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2 years ago

What's the standard form of Eight hundred thousand, forty nine?

Tju [1.3M]

Answer:

800,049

Step-by-step explanation:

i hope this helps

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3 years ago

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(show ur work) Each bag of gourment popcorn for a school fundraiser costs $6.75. The total amount received from the popcorn sale

Alinara [238K]

Answer:

725 Boxes of Popcorn

Step-by-step explanation:

You can do it simply by just typing in the calculator 4893.75÷6.75.

But I can show my work. Picture below

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2 years ago

What is the inverse of the function below? f(x) = 5x - 2

kupik [55]

Answer:

B. f -1(x) = x + 2 / 5

$f^{-1}(x)=\frac{x+2}{5}$

Step-by-step explanation:

To find the inverse of a function we need to interchange x and y an solve for y.

Since $f(x)=y$ , then

$f(x)=5x-2$

$y=5x-2$

$x=5y-2$

Add 2 to both sides

$x+2=5y-2+2$

$x+2=5y$

Divide both sides by 5

$\frac{x+2}{5}=\frac{5y}{5}$

$\frac{x+2}{5}=y$

$y=\frac{x+2}{5}$

$f^{-1}(x)=\frac{x+2}{5}$

We can conclude that the correct answer is B. f -1(x) = x + 2 / 5

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3 years ago