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2 years ago

Use properties of operations to find an equivalent expression for 4y(2+y)-(3y+3)

Mathematics

1 answer:

Andrej [43]2 years ago

7 0

$\boxed{4y^2+5y-3}$

<h2>Explanation:</h2>

Step 1. Write the given expression

$4y(2+y)-(3y+3)$

Step 2. Apply distributive property:

$8y+4y^2-3y-3$

Step 3. Combine like terms:

$4y^2+5y-3$

<h2>Learn more:</h2>

Distributive property: brainly.com/question/10794694

#LearnWithBrainly

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in a class of 32 students the mean height of the 14 boys is 1.56 meters and the mean height of all 32 students is 1.151 meters.

Nimfa-mama [501]

Answer: Hence, Mean height of the girls is: 1.48

Step-by-step explanation: It is given that:

in a class of 32 students .

the mean height of 14 boys is 1.56 and the mean height of all 32 students is 1.515.

Since there are 14 boys in a class.

So, number of girls is equal to (32-14)=18.

The mean height of 14 boys is 1.56.

Hence the sum of height of 14 boys is= 1.56×14=21.84

Similarly mean height of 32 students is 1.515.

Hence, sum of height of 32 students=1.515×32=48.48.

Let x denote the mean height of 18 girls.

Hence, sum of height of 18 girls is: 18 x.

Now,

18x+21.84=48.48

( since sum of height of girls and boys is equal to the sum of height of all the students)

so, 18x=48.48-21.84

18 x=26.64

Hence, x=1.48

Hence, Mean height of the girls is: 1.48

4 0

3 years ago

Im in no rush just need help

Romashka [77]

Answer:

1. Right: pointing downwards

Left: pointing upwards

2. Right: pointing upwards

Left: pointing upwards

3. Right: pointing downwards

Left: pointing upwards

4a. True

4b. True

Step-by-step explanation:

When the leading coefficient is negative the equation will either open downwards or the y-values will decrease as the x-values increase. The opposite is true for when the leading coefficient is positive. When the degree is odd one end will point downwards while the other points upwards. When the degree is even, both ends point in the same direction.

I hope this helps :)

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2 years ago

Simplified form of 4(20 12) divided (4-3)

Bas_tet [7]

237 is the answer i think

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2 years ago

Can someone help me with this?

Lerok [7]

Answer:

1 is C and 2 is B