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GuDViN [60]
3 years ago
13

No need for an explanation it is option

Mathematics
2 answers:
Zolol [24]3 years ago
5 0

Answer:

II) 78

Step-by-step explanation:

2x - 6 + 7x + 15 = 90

9x + 9 = 90

9x = 81

x = 9

<ABC:

7x + 15

7(9) + 15

78

Dimas [21]3 years ago
4 0

Answer and Step-by-step explanation:

To find the measure of angle ABC, we need to find what x is first. We accomplish this by adding together the two angles and setting it equal to 90.

2x - 6 + 7x + 15 = 90

<u>Combine like terms.</u>

9x + 9 = 90

<u>Subtract 9 from both sides.</u>

9x = 81

<u>Divide both sides by 9.</u>

x = 9

We get x to be 9.

Now, we can plug this in for angle ABC.

7(<u>9</u>) + 15

<u>Multiply 7 and 9 together.</u>

63 + 15

<u>Add 63 and 15 together.</u>

78

The measure of ABC is 78.

That means the answer is <u>II) 78</u>.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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Rewriting expressions using algebraic properties doesn't change the value of the expression or the relationship it describes.
kiruha [24]

Answer:

  see attached

Step-by-step explanation:

No doubt you have examples showing the wording that is expected to be used here. We have made a guess.

power of a ratio: the numerator is raised to the power, as is the denominator. (a/b)^c = (a^c)/(b^c)

power of a product: each factor is raised to the power. (ab)^c = (a^c)(b^c)

power of a power: the powers are multiplied. (a^b)^c = a^(bc)

quotient of powers: the result when one power is divided by another is the difference of the numerator and denominator powers. (a^b)/(a^c) = a^(b-c)

_____

<em>Additional comment</em>

The order of operations tells you to simplify inside parentheses first. Doing that reduces the work somewhat.

  \left(\dfrac{-3x^3y}{x^2}\right)^4=(-3xy)^4=(-3)^4x^4y^4=81x^4y^4

6 0
3 years ago
Sum of two number is 120. If the larger number is four times the smaller number, wbat are the two numbers
tankabanditka [31]

x+y=120_______1

x=4*y_________2

x=4y

substitute 4y for x in equation 1

`4y+y=120

5y=120

eliminate the coefficient of y

y=120/5

y=24

now,input 24 for y in equation 2

`x=4y

x=4*24

x=96

thus, the numbers are

96 and 24

3 0
3 years ago
PLS HELP
djyliett [7]

Answer:

Look at the unfolded cylinder down: it's consisted of a rectangle and 2 circles. so to find the surface area of the cylinder we should find the areas of the rectangle and the 2 circles.

1) A of 2 circles = 2(πr^{2}) = 2πr^{2}

2) A of rectangle = base x height (or length x width) = bh

but the if we fold the rectangle? what will happen?

the base will go around the circle, this means that the base is equal to the circle circumference, which is 2πr.

Therefore, A of rectangle = 2πrh

3) Surface area of cylinder =  2πr^{2} + 2πrh

   simplify more and take the common factor 2πr:

    = 2πr (r+h)

   

4 0
3 years ago
PLS HELP I WILL GIVE BRAINLIEST PLS
Serhud [2]

Answer:

B.

Step-by-step explanation:

x represents the amount of guests going to the birthday party, with the amount of money per guest being 12. You would multiply those two together, but as we do not know the total amount of guests, we keep it as a variable. 125 is the amount before the guests even know about the party, so therefore, you would need to use that equation.

6 0
3 years ago
The formula for the area of a triangle 1/2bh=a. which of the following is not a possible first step to rearrange this formula to
Nataly_w [17]
Hi there!

The answer to this question is A - multiply by 1/2. This is because multiplying by 1/2 does not get rid of the 1/2 on that side, which is what we want to do.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
7 0
3 years ago
Read 2 more answers
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