MATHEMATICS MIDDLE SCHOOL

What does x equal if the equation is 4x+15=9x

Answers

Answer 1

Answer:

Answer:

x=3

Step-by-step explanation:

4x+15=9x

-4x on both sides

15=5x

Divide equation by 5 on both sides

Answer 2

Answer:

Answer:

x = 3

Step-by-step explanation:

Collect constant terms to RHS and Simplify

4x + 15 + (-15) = 9x + -15

4x = 9x - 15

Collect Terms with:- x to LHS and SImplify

4x + 9x = 9x - 15 + 9x

-5x = -15

Divide both sides by (-5) and Simplify

-5x = -15

-5x/-5 = -15/-5

x = 3

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Sasha has a triangle with vertices a,b and c. The triangle has three congruent angles. She wants to show that triangle ABC has three congruent sides, but she does not have a ruler to measure the lengths of the sides. How can she show that line triangle has three congruent sides?

Answers

She can draw a triangle and then write the lenghts of the triangles with the same numbers

If she has a protractor then she could measure the angles, if they are all the same, then the sides are congruent. It also means that the triangle is an equilateral triangle. (each angle should be 60 degrees) Without somthing a ruler or a protractor though, there is no way to know for sure.

Find the value of x.

A- 26
B- 46
C-15
D-80

Answers

Answer:

C. 15

Step-by-step explanation:

A straight line equals 180°.

The angles are:

(6x + 10) +

(6x - 10)

+10 and -10, cancel each other out.

Now we are left with:

(6x) +

(6x)

6 + 6 = 12, so we have 12x

180° ÷ 12 = 15°

Answer: 15

Step-by-step explanation:

A 5-foot piece of linen costs $29.40. what is the price per inch?

Answers

the price per inch is $5.88

Answer is .49 cents

Explain:
Do 29.40 divided by 5
And get 5.88
After that you divide that by 12 because there are 12 inches in a foot.

7. y = -x + 1
Axis of Symmetry:
Vertex:
Domain:
Range:

Answers

Answer:

Step-by-step explanation:

axis of symmetry

y=x+1

vertex (0,1)

Domain: all real numbers.

Range: all real numbers.

Is 10 yards less than 360 inches

Answers

$1\ yd=3\ ft\ \ \ and\ \ \ 1ft=12\ in\n\n10\ yd=10\cdot3\ ft=30\ ft=30\cdot12\ in=360\ in\n\nAns.\ 10\ yd\ \ \ equals\ \ 360\ in$

10 yards= 30 feet (3 feet in 1 yard, so 10x3=30) 30 feet=360 inches (12 inches in 1 foot, so 30x12=360) They are equal

The square root of 1/144 simplified

Answers

1/12 is the square root of 1/144

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