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3 years ago

28+29+42 =99 what property of addition is it

Mathematics

2 answers:

Georgia [21]3 years ago

6 0

Disruptive property

Snowcat [4.5K]3 years ago

4 0

I agree it is distributive property

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What is x if the equation is, 4 - (2x-3) = 3?

user100 [1]

Answer:

x = 2

Step-by-step explanation:

4 - (2x-3) = 3

Distribute the minus sign

4 -2x+3 = 3

Combine like terms

7 -2x = 3

Subtract 7 from each side

7 -2x-7 = 3-7

-2x = -4

Divide by -2

-2x/-2 = -4/-2

x = 2

4 0

3 years ago

(a+4)² - 3²<br> Factored out

uranmaximum [27]

Answer:

$a = - 7$

$a = - 1$

Step-by-step explanation:

$(a+4) {}^{2} - 3 {}^{2} \\ a {}^{2} + 8a + 16 - 9 \\ a {}^{2} + 8a + 7 \\ a {}^{2} + a + 7a + 7 \\ a(a + 1) + 7(a + 1) \\ (a + 7)(a + 1) \\ a + 7 = 0 \: \: \: \: or \: \: \: \: a + 1 = 0 \\ a = - 7 \: \: \: \: \: \: \: \: or \: \: \: a = - 1$

8 0

3 years ago

In PE class Flynt is choosing 2 members for his dodgeball team. If he can choose 2 individuals from a group of 6 classmates, how

Tatiana [17]

Answer:

C) 15

Step-by-step explanation:

Here we have to use the combination to find the number of possible combinations.

Total number of classmates (n) = 6

We are selecting 2 individuals. So r = 2.

The combination formula nCr = $\frac{n!}{r!(n-r)!}$

Plug in n = 6 and r =2, in the above formula, we get

= $\frac{6!}{2!(6-2)!}$

= $\frac{6!}{2!4!}$

Simplifying the above factorial, we get

= 15

So the answer is C) 15

7 0

3 years ago

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Anyone know how to do this

blsea [12.9K]

Answer:

A B C D E MIGHT BE UR ANSWER

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3 years ago

What is -6 multiplied by 1/2

kirill115 [55]

Turn the fraction into a decimal,so 1/2 would be .5 and then multiply that into -6 which would be -3

5 0

3 years ago

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