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3 years ago

12

Please help.find the missing side or angle and each problem .

1 answer:

Jlenok [28]3 years ago

4 0

1. 27
2. 55
3. 20
4. 21

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Help I don’t understand at all

zloy xaker [14]

Answer:

$1)\ \ 4h^2-13h+6\\2)\ \ 7x^3y^2-x^2y+1\\3)\ \ -7n+2\\4)\ \ -8m+4$

Step-by-step explanation:

1.

Simplify the expression by combining like terms. Remember, like terms have the same variable part, to simplify these terms, one performs operations between the coefficients. Please note that a variable with an exponent is not the same as a variable without the exponent. A term with no variable part is referred to as a constant, constants are like terms.

$2h^2-7h+2h^2-h+6+4h-9h$

$(2h^2+2h^2)+(-7h-h+4h-9h)+(6)$

$4h^2-13h+6$

2.

Use a very similar method to solve this problem as used in the first. Please note that all of the rules mentioned in the first problem also apply to this problem; for that matter, the rules mentioned in the first problem generally apply to any pre-algebra problem.

$8x^3y^2-7x^2y+8x-4-x^3y^2+2x^2y+4x^2y-8x+5$

$(8x^3y^2-x^3y^2)+(-7x^2y+2x^2y+4x^2y)+(8x-8x)+(-4+5)$

$7x^3y^2-x^2y+1$

3.

Use the same rules as applied in the first problem. Also, keep the distributive property in mind. In simple terms, the distributive property states the following ( $a(b+c)=(a)(b)+(a)(c)=ab+ac$ ). Also note, a term raised to an exponent is equal to the term times itself the number of times the exponent indicates. In the event that the term raised to an exponent is a constant, one can simplify it. Apply these properties here,

$-2(8n+1)-(5-9n)+3^2$

$-2(8n+1)-(5-9n)+(3*3)$

$-2(8n+1)-(5-9n)+9$

$(-2)(8n)+(-2)(1)+(-)(5)+(-)(-9n)+9$

$-16n-2-5+9n+9$

$(-16n+9n)+(-2-5+9)$

$-7n+2$

4.

The same method used to solve problem (3) can be applied to this problem.

$\frac{1}{2}(10-8m+6m^2)-(3m^2+4m-7)-2^3$

$\frac{1}{2}(10-8m+6m^2)-(3m^2+4m-7)-(2)(2)(2)$

$(\frac{1}{2})(10)+(\frac{1}{2})(-8m)+(\frac{1}{2})(6m^2})+(-)(3m^2)+(-1)(4m)+(-1)(-7)-8$

$5-4m+3m^2-3m^2-4m+7-8$

$(-3m^2-3m^2)+(-4m-4m)+(5+7-8)$

$-8m+4$

8 0

3 years ago

What balance will be in an account that has an initial deposit of $4600 with an APR of

GarryVolchara [31]

Answer:

100$or 20.4 that is the answer

7 0

3 years ago

Summit provides patrol 6 (grade 6) with $85 to spend on the snacks. Will the amount of money be enough to cover the total cost o

sammy [17]

Answer: yes

Step-by-step explanation: smart werewolf.

3 0

3 years ago

Please help me I don’t understand

Anna35 [415]

The LCD is 42 because that is the least number that they both are factors of.

Hope this helps :)

4 0

3 years ago

Read 2 more answers

A positive integer is twice another. The sum of the reciprocals of the two positive integers is 3/10 find the integers

Brut [27]

x = 2y

1/x + 1/y = 3/10

Since we have a value for x, let's plug it into the second equation.

1/2y + 1/y = 3/10

Now, let's make the denominators equal.

Multiply the second term by 2.

1/2y + 2/2y = 3/10

Multiply the final term by 0.2y

1/2y + 2/2y = 0.6y/2y

Compare numerators after adding.

3 = 0.6y

Divide both sides by 0.6

<h3>y = 5</h3>

Now that we have the value of the second integer, we can find the first.

x = 2y

x = 2(5)

<h3>x = 10</h3>

Let's plug in these values in our equations to verify.

10 = 2(5) √ this is true

1/10 + 1/5 = 3/10 √ this is true

<h3>The first integer is equal to 10, and the second is equal to 5.</h3>

3 0

2 years ago