I need help please. This is due in 40 minutes:(
Given the diagram below, solve for x and y.

Answer: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!

Step-by-step explanation:

Answer:

6^2 or 36

Step-by-step explanation:

Here we have two powers of the same base (6).  

The pertinent rule is b^c * b^d = b^(c + and so here we have

6^(-2) * 6^4 = 6^(4 - 2) = 6^2 or 36

Answer:

160 students

Step-by-step explanation:

As, 80% of 200 students instruments are of brass

So 80% of 200

= 80/100 x 200 = 160

So 160 students

Answer: 15x^2+6xy

Step-by-step explanation: 3x(6y−4y+5x)

(3x)(6y+−4y+5x)

(3x)(6y)+(3x)(−4y)+(3x)(5x)

18xy−12xy+15x^2

15x^2+6xy

Answer:

Step-by-step explanation:

2x-6+3x+5+2x+20=180

7x=180-19=161

x=161/7=23

angles are 2×23-6,3×23+5,2×23+20

or 40,74,86

smallest angle=40°

Answer:

b

Step-by-step explanation:

Answer:

The slope is 1.

PEMDAS = Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

First, subtract the numbers in the parentheses, then multiply by 11.

(12 - 9) = (3)

3 x 11 = 33

19 + 11 - 12^2 ÷ 3(33) - 7

Now, just multiply 33 by 3, and then square 12 (12 x 12).

19 + 11 - 144 ÷ 99 - 7

Now, you can divide 144 by 99, this is an infinite number, so..

144 ÷ 99 = 1.455

19 + 11 - 1.455 - 7

Finally add, then subtract.

30 - 1.455 - 7

28.545 - 7

The final answer is 21.545.

Answer: 11.3 feet

Step-by-step explanation:

The question is not structured properly but assuming the ramp should have a slope of 12 feet then this can be solved with the Pythagorean theorem.

a² + b² = c²

a is the height above the ground

b is the distance of the ramp's beginning from the entrance

c is the slope

4² + b² = 12²

16 + b² = 144

b² = 144 - 16

b² = 128

b = √128

b = 11.3 feet

Step-by-step explanation:

or, 2x° + (3x +5)° = 90° [ Complementary angles]

or, 5x° + 5 = 90°

or, 5x° = 90°- 5

or, x = 85/5

: x=17°

Answer:

x- intercept (5, 0)

y- intercept (0, 2)

Step-by-step explanation:

x- intercept occurs at y= 0.

To find the x- intercept of the linear equation, substitute y= 0 into the equation.

4x +10y= 20

When y= 0,

4x +10(0)= 20

4x= 20

x= 20 ÷4 (÷4 on both sides)

x= 5

Thus, the x-intercept is (5, 0).

y-intercept occurs at x= 0.

4x +10y= 20

When x= 0,

4(0) +10y= 20

10y= 20

y= 20 ÷10 (÷10 on both sides)

y= 2

Thus, the y-intercept is (0, 2).

Answer:

80%

Step-by-step explanation:

This is because if 60 cents is 60% of a dollar then 80 is 80% of a dollar. I got 80 because a dime is worth ten cents and 8 times 10 equals 80. so that would be 80%

Answer:

x = 9, NM = 41

Step-by-step explanation:

Since KL = ML  then the triangle is isosceles and LN is a perpendicular bisector, thus

NM = NK , substitute values

7x - 22 = 3x + 14 ( subtract 3x from both sides )

4x - 22 = 14 ( add 22 to both sides )

4x = 36 ( divide both sides by 4 )

x = 9

Thus

NM = 7x - 22 = 7(9) - 22 = 63 - 22 = 41

Answer: Many people assume that because DNA is so small, we can't see it without powerful microscopes. But in fact, DNA can be easily seen with the naked eye when collected from thousands of cells.

Answer:

R'(-3,-1), S'(-1,-3), T'(-4,'5).

Step-by-step explanation:

Rotations

Rotating a point of coordinates M(h,k) through 180° about the origin maps it to coordinates to M'(-h, -k).

The triangle has the vertices at R(3,1), S(1,3), T(4,5). After a rotation of 180° about the origin it maps to a new triangle with coordinates:

R'(-3,-1), S'(-1,-3), T'(-4,'5).

An image of both triangles is shown below.

Answer:

3x ^2

Step-by-step explanation:

x ^3-2

Answer:

x^3-2

Step-by-step explanation:

[tex]\frac{X³-4}{2} \\x³-2[/tex]

Answer:

49.5%

Step-by-step explanation:

Answer:

X=2, AB=14, DC=14

Step-by-step explanation:

3x+8=x+12

Subtract x from both sides

2x+8=12

Subtract 8 from both sides

2x=4

Divide by 2 on the sides

Answer: x=2

Then replace the x's with (2) and multiply

3(2)+8 and (2)+12

Answer:

Both AB and DC are equal to 14.

Step-by-step explanation:

Answer: Create equivalent expressions in the equation that all have equal bases.

2

2

x

=

2

7

Since the bases are the same, then two expressions are only equal if the exponents are also equal.

2

x

=

7

Divide each term by

2

and simplify.

Divide each term in

2

x

=

7

by

2

.

2

x

2

=

7

2

Cancel the common factor of

2

.

Cancel the common factor.

2

x

2

=

7

2

Divide

x

by

1

.

x

=

7

2

The result can be shown in multiple forms.

Exact Form:

x

=

7

2

Decimal Form:

x

=

3.5

Step-by-step explanation: Brainless, please

Correct expressions : [tex]x^4/2[/tex] and [tex]8x^2[/tex] .

Hence option B and E are correct .

Given, expression will yield 128 when x = 4 .

Expression B :

[tex]x^4/2[/tex]

Put x = 4

[tex]\frac{4^4}{2}\\ = 128[/tex]

Expression E :

[tex]8x^2[/tex]

Put x = 4

[tex]8(4^2)\\= 128[/tex]

Therefore option B and E are correct .

Know more about expressions,

https://brainly.com/question/22535683

#SPJ6

Answer:

Matt was paid an average of $10 per hour of babysitting for the day.

Step-by-step explanation:

He babysat in the morning for 3 hours being paid $10 per hour. He later babysat in the evening for 5 hours being paid $20 per hour. Since he was being paid two different amounts throughout the day, the average would be $10. He was being paid atleast $10 per hour for babysitting because even though he was being paid $20 in the evening, the lowest amount of money that he was paid, was $10 making that the average.

Answer:

1. 60 snickers

2. 20 KitKats

i cannot anwser 3 cause its not showing up somehow. Sorry.

Step-by-step explanation:

Answer:

1) 60 Mini Snickers

2) 20 Kitkats

3) We know that the x intercept is the value of x when y is 0. We also know that the Y intercept is the value of y when x is 0. Both maximums can represent either a y or x intercept because they are the value when you don't have any money left or $0.

Step-by-step explanation:

1) 15 ÷ 0.25= 60

2) 15 ÷ 0.75= 20

Answer:

t=1

Step-by-step explanation:

16-2t = t + 9 +4t

combine like terms

16-2t = 5t + 9

add 2t to both sides

16-2t+2t = 5t+9+2t

combine like terms

16=7t+9

subtract 9 from both sides

16-9=7t+9-9

combine like terms

7=7t

divide both sides by 7

t=1

Answer:

16=t+9+4t+2t

16=9+7t

16-9=7t

7=7t

t=1

Answer:

(x-  5)(x - 3)

x(x - 3) -5(x - 3)

x^2 - 3x - 5x + 15

x^2 - 8x + 15

Answer:

Hypotenuse = 37

Step-by-step explanation:

Let the base is 12 and height is 35.

We can use Pythagorean theorem to find the third side (hypotenuse or the longest side). The Pythagoras theorem can be given by :

[tex]H^2=b^2+h^2\\\\H^2=12^2+35^2\\\\H^2=1369\\\\H=\sqrt{1369} \\\\H=37[/tex]

Hence, the hypotenuse is 37 units.