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3 years ago

7+6x14-9=37 insert parentheses

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Answer:

$7+6\times(14-9)=37$

Step-by-step explanation:

The given expression is

$7+6\times14-9$

If we evaluate the expression as it is we will get;

$7+84-9=82$

But we want to insert parenthesis so that we will use PEDMAS to obtain 37 as the result.

The only way this can be achieved is when we insert the parenthesis as shown below;

$7+6\times(14-9)=7+6(5)=7+30=37$

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Reflect the point (-4, 3) across the x-axis

vfiekz [6]

Answer:

(4,3)

Step-by-step explanation:

If its across the x axis, you just reverse the sign on the x. So because it was -4 it becomes 4

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3 years ago

N is an integer write down all the possible values of n -2≤n<5

melisa1 [442]

Answer:

-2, -1, 0, 1, 2, 3, 4

Step-by-step explanation:

The number has to be smaller than 5 but greater than or equal to - 2

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4 years ago

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On Monday, a fruit vendor bought 808080 pieces of fruit to sell at her market, 35\%35%35, percent of which were apples and the r

Zepler [3.9K]

Answer:

28.8% of the fruit she bought on Tuesday was apples.

Step-by-step explanation:

Given:

On Monday, a fruit vendor bought 80 pieces of fruit to sell at her market, 35%, percent of which were apples and the rest of which were oranges. On Tuesday, the vendor bought the same number of oranges, but she only bought 73 pieces of fruit.

Now, to find the percentage of apples among the fruit she bought on Tuesday.

So, on Monday the fruit vendor bought 80 pieces of fruit.

35%, percent of which were apples.

So, the number of apples in the fruit are:

$35\%\ of\ 80\\\\=\frac{35}{100} \times 80\\\\=0.35\times 80\\\\=28\ apples.$

Thus, there are 28 apples.

Now, the rest are oranges, so we find the number of oranges by subtracting 28 apples from 80 pieces of fruit:

$80-28=52\ oranges.$

As, there were 52 oranges in the fruit on Monday.

And, the vendor bought same number of oranges on Tuesday.

So, total number of fruit pieces she bought on Tuesday was 73.

Now, to get the number of apples she bought on Tuesday we subtract number of oranges from the total number of pieces of fruit:

$73-52=21.$

Hence, the apples she bought on Tuesday was 21.

Now, to get the percentage of fruit she bought on Tuesday was apples:

$\frac{21}{73} \times 100\\\\=\frac{2100}{73} \\\\=28.8\%.$

Therefore, 28.8% of the fruit she bought on Tuesday was apples.

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4 years ago

I really need help with number 9.

Sophie [7]

Answer:

2/4 = 1/2

Step-by-step explanation:

Firstly expand cos(x - 30)....which is..

[cos x.cos 30 + sin x.sin 30]

If sin x = -1/2...then cos x = square root of 3/2

Then substitute the values into the expansion above....which...,

[(square root of 3/2)(square root of 3/2) + (-1/2)(1/2) ]

; 3/4 - 1/4 = 2/4

;Ans = 2/4 = 1/2

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3 years ago

An expression that uses variables to state a rule is a ______

nikdorinn [45]

Formula

An expression that uses variables to state a rule is a formula

<h2>Explanation:</h2>

An expression that uses variables to state a rule is a formula. It's important to know that formulas uses the equals sign (=) and includes two or more variables. Formulas gives us information that we express symbolically. For example, the well known formula for the volume of a sphere is defined as:

$V=\frac{4}{3} \pi r^3 \\ \\ \\ Where: \\ \\ V:Volume \ of \ the \ sphere \\ \\ r:Radius \ of \ the \ sphere$

So in this formula we have a relationship between the volume of a sphere and its radius, so if we have information about the radius of it we can easily calculate the volume of it.

<h2>Learn more:</h2>

Volume of prism: brainly.com/question/12501166

#LearnWithBrainly

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3 years ago

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