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3 years ago

6.5(6.24-1.69)=? pls help

Mathematics

2 answers:

Afina-wow [57]3 years ago

8 0

Answer:

29.575

Step-by-step explanation:

6.5(6.24-1.69)= 6.5(4.55) = 29.575

ElenaW [278]3 years ago

4 0

Answer:

$6.5(6.24 - 1.69) \\ = 6.5 \times 4.55 \\ = 29.575$

<h3>29.575 is the right answer.</h3>

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Aunty Joan packs a packet of sweets to Alice and Olivia. Alice and Olivia share sweets in the ratio 7:3. Alice gives 3 sweets to

aivan3 [116]

Initially, Alice had 28 sweets and Olivia 12 sweets.

Step-by-step explanation:

First assume that Aunty Joan has x number sweets.

Alice and Olivia shared the x sweets in a ration of 7:3, this means

Alice had 7/10 x sweets and Olivia had 3/10 sweets.

Alice gives 3 sweets to Olivia, Alice will remain with ;

$\frac{7}{10} x-3$

Then the new ratio changes to 5:3 which means Alice will have 5/8 x number of sweets.

Equate the number of sweets for Alice in the two cases, which is

$\frac{5}{8}x=\frac{7}{10} x-3\\ \\\frac{7}{10} x-\frac{5}{8} x=3\\$

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So there were 40 sweets at first

Using the ratio of 7:3 then

Alice had 7/10 *40 = 28 sweets

Olivia had 3/10*40= 12 sweets

Alice gave Olivia 3 sweets, so she will remain with 28-3 =25 sweets. Olivia will now have 15 sweets.The new ratio will be 25:15 simplified as 5:3.

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3 years ago

How do u solve 4(3x-1)=9-x

Nastasia [14]

Answer:

x = 1

Step-by-step explanation:

Well the first step is to apply the distributive property:

4(3x - 1) is equal to (12x - 4). You DISTRIBUTE a '4' to what is inside the parentheses.

And btw, to make it easier, you can make 9 - x so that x is first. For example, (-x + 9). They're both the same thing, just written differently.

Your new equation is 12x - 4 = -x + 9. You want to now solve the equation.

Add the (-x) to both sides. It cancels out on the right side and you add it to 12x on the left side.

[If there's no number in front of a variable, you can always just put 1 in order to make it easier]

12x + 1x = 13x. Your new equation is 13x - 4 = 9. This should look very familiar. You simply add 4 to both sides. 9 + 4 = 13

Finally, 13x = 13. Divide 13 ÷ 13 to get 1.

x = 1

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3 years ago

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mars1129 [50]

Answer:

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Step-by-step explanation:

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3 years ago

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katrin2010 [14]

Answer:

$\frac{26}{45}$ and $\frac{3}{11}$

Step-by-step explanation:

(a)

Expressing as a fraction

$\frac{52}{90}$ ( divide numerator/ denominator by 2 )

= $\frac{26}{45}$ ← in simplest form

(b)

Expressing as a fraction

$\frac{30}{110}$ ( divide numerator/ denominator by 10 )

= $\frac{3}{11}$ ← in simplest form

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2 years ago

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mylen [45]

85 is the correct answer.

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3 years ago