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3 years ago

Need help ASAP no rocky

Mathematics

1 answer:

Mademuasel [1]3 years ago

7 0

Answer:

x = 12

Step-by-step explanation:

The sum of a heptagon interior angles is 900 degrees, so:

10x + 5 + 12x - 9 + 9x + 14 + 133 + 10x + 9 + 10x + 136 = 900

rearrange to make it easier to subtract/add, u don't have to do this it's optional

10x + 12x + 9x + 10x + 10x + 5 - 9 + 9 + 14 + 133 + 136 = 900

add liket terms

22x + 29x + 19 + 269 = 900

51x + 288 = 900

subtract 288 from both sides

51x = 612

divide by 51

x = 12

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This is my question -- solve x^2+5x+6=0

TiliK225 [7]

Answer:

x = -2,-3

Step-by-step explanation:

Solve the equation by factorizing.

To factorize this equation, you have to find the two numbers that adds up to 5 and multiplies to 6.

This one is obvious, but for others you may use trial and error.

After finding the 2 numbers: 2 and 3.

Present them in this format:

(x+3) ( x+2) = 0

You may check if this is correct using the distribution method.

After this,

you have to solve it individually.

for example:

x+3 = 0

x = -3

x+2 = 0

x = -2.

Thus, x has 2 different values: -3, -2.

You may check this by substituting x with either of these values.

Please mark brainiest

5 0

3 years ago

What’s is the answer

kvasek [131]

When you are multiplying an exponent directly into a number/variable with an exponent, you multiply the exponents together.

For example:

$(x^{2} )^{3} = x^6$

$(x^{3} )^5=x^{15}$

When you are multiplying a variable with an exponent by another variable with an exponent, you add the exponents together.

For example:

$(x^{2} )(x^{3})=x^{5}$

$(x^{1} )(x^{2})=x^{3}$

$(\frac{(x^{-3})(y^{2})}{(x^{4})(y^{6})} )^{3}=\frac{(x^{-9})(y^{6})}{(x^{12})(y^{18})}$

You multiply 3 into each exponent in the numerator and the denominator

$\frac{(x^{-9})(y^{6})}{(x^{12})(y^{18})}= \frac{y^{6}}{(x^{9})(x^{12})(y^{18})}$

When you have a negative exponent, you move it to the other side of the fraction to make the exponent positive.

$\frac{y^{6}}{(x^{21})(y^{18})} = \frac{1}{(x^{21})(y^{12})}$

When you have something like this:

$\frac{x^{2}}{x^5}$

You subtract the exponents together, so:

$\frac{x^2}{x^5} = x^{2-5} = x^{-3} = \frac{1}{x^3}$

Your answer is the second option

3 0

3 years ago

1.The data set shows the October 1 noon temperatures in degrees Fahrenheit for a particular city in each of the past 6 years.

Paladinen [302]

Did you figure it out?

8 0

4 years ago

What is the product of -2x^3+x-5 and x^3-3x-4 ? (a) Show your work

saul85 [17]

Answer:

-3x3 - 2x - 4

Step-by-step explanation:

((((2•(x3))+x)-5x3)-3x)-4

(((2x3 + x) - 5x3) - 3x) - 4

Pulling out like terms :

4.1 Pull out like factors :

-3x3 - 2x - 4 = -1 • (3x3 + 2x + 4)

Polynomial Roots Calculator :

4.2 Find roots (zeroes) of : F(x) = 3x3 + 2x + 4

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 3 and the Trailing Constant is 4.

The factor(s) are:

of the Leading Coefficient : 1,3

of the Trailing Constant : 1 ,2 ,4

Let us test ....

P Q P/Q F(P/Q) Divisor

-1 1 -1.00 -1.00

-1 3 -0.33 3.22

-2 1 -2.00 -24.00

-2 3 -0.67 1.78

-4 1 -4.00 -196.00

-4 3 -1.33 -5.78

1 1 1.00 9.00

1 3 0.33 4.78

2 1 2.00 32.00

2 3 0.67 6.22

4 1 4.00 204.00

4 3 1.33 13.78

Polynomial Roots Calculator found no rational roots

Final result :

-3x3 - 2x - 4

Processing ends successfully

plz mark me as brainliest :)

8 0

4 years ago

Measure Math | Welcome, HAILEE KNOTT

grandymaker [24]

Answer: $15\times\frac{1}{2}$

Explanation:

Multiplying by 1/2 is the same as dividing by 2.

For example, if you have 10 slices of cake and 2 friends, then each friend gets 10/2 = 5 slices. We could also say $10\times \frac{1}{2} = 5$

The fraction 1/2 converts to the decimal form 0.5, which means $10 \times \frac{1}{2} = 10*0.5$

3 0

3 years ago