do I add multiply, add, subtract ? I need help!

First things first.. What type of triangle

If u are taking about a normal triangle here is some:

∠60+∠60+∠60

∠30+∠90+∠60

∠11+∠82+∠87

Answer: 38

Solution: An isosceles triangle has two equal sides: 3x - 5 and 19-x.; 3x - 5 = 19 - x; 4x = 24; x = 6

Let's check it out: 3(6) - 5 = 13; 19 - (6) = 13; 2(6) = 12

Two equal sides are 13 and base 12

Perimeter is 13 + 13 + 12 = 38 units

Answer is: 38

The perimeter of the given isosceles triangle is 38 cm.

The perimeter of an isosceles triangle refers to the addition of all the three sides of the triangle. Since the base angles of an isosceles triangle have two angles and two sides equal;

We can say that the perimeter of an isosceles triangle is:

P = 2a + b

where;

3x - 5 =  19 - x

3x + x = 19 + 5

4x = 24

x = 24/4

x = 6

The perimeter of the isosceles triangle is:

= 3x - 5 + 19 - x + 2x

= 3(6) - 5 + 19 - 6 + 2(6)

= 18 + 8 + 12

= 38 cm

Learn more about the perimeter of an isosceles triangle here:

https://brainly.com/question/11296804

Answer:

Quadratic

Step-by-step explanation:

Not adding or multiplying

Answer:

C) 17

Step-by-step explanation:

Using the rule

A^2 + B^2 = C^2

8^2 + 15^2 = x^2

64 + 225 = x^2

x^2 = 289

x= _/-289

x = 17

Answer:Its 210

Step-by-step explanation:

Trust me

Answer:

D → (-3, 3)

F → (2, -2)

E → (0, 5)

Step-by-step explanation:

Coordinates of a point is given by [tex](x,y)[/tex].

Here, [tex]x[/tex] represents the horizontal distance of the point from origin [tex](0,0)[/tex] and [tex]y[/tex] represents the vertical distance of the point from origin.

Let's take an example of point D,

Horizontal distance of point D from origin [tex]x=-3[/tex] and vertical distance from origin [tex]y=3[/tex]

Coordinates of the point D will be (-3, 3).

Coordinates of the point F will be (2, -2).

Coordinates of the point E will be (0, 5).

Answer:

700

Step-by-step explanation:

price x .80 (100%-20)=560

price=560/.8

price=700

The item's initial cost before taxes is $700.

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to compute a percentage of a number, we should divide it by its whole and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the term percent signifies. The letter "%" stands for it.

Given, A sales item is 20% off. If the final price of the item was $560.00

Let "x" be the original price of the item

Since If the final price of the item was $560.00

Thus,

x(1 - 20%) = 560

x(1- 20/100) = 560

x(80/100) = 560

x = 700

therefore, The original price of the item without tax will be $700.

Learn more about percentages here:

https://brainly.com/question/29306119

#SPJ2

Answer:

10000 metres

Step-by-step explanation:

You calculate by multiplying the number of metres in the ratio by 10 centimetres.

Your answer should come out to 10000 (10:10000)

Answer:

$55.42

Step-by-step explanation:

Price of supplies = 100%

Percentage of tax = 8.25%

Total percentage = 108.25%

Amount allowed to spend = $60

108.25% = 60

60 / 108.25 = .55427

0.55427x100 = 55.427

Round down

$55.42

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

the answer is between 11 and 12

Answer:

The perimeter of the figure is approximately 42.85.

Step-by-step explanation:

Based on the given values, you already know that two of the sides of the shape are 12 units long. Since the half-circle above the rectangle is the same size as the gap in the rectangle - you know this because both of the half-circle's diameter are 6 units long - so you can add 24 units to the perimeter of a circle with a diameter of 6. The diameter of the circle is [tex]6\pi[/tex], or approximately 18.85, so the perimeter of the whole figure is approximately 42.85.

Answer:

well... this normal addition

Step-by-step explanation:

9+8=17

9+1=10

5+4=9

5+2=7

3+4=7

3+1=4

Answer:

B

Step-by-step explanation:

.1 is tenth

.01 is hundreth

1 is ones

10 is tens

100 is hundreds

Answer:

81

Step-by-step explanation:

Substitute 3 in place of y

7 * 3 * 3 - 16 + 5 * 3 *2 + (16 / 4)

63 - 16 + 30 + 4

Answer:

Part A

The motion of an elevator in a building is mechanically controlled by electrical powered devices and therefore, the motion of an elevator between start and stop is uniform motion without acceleration and therefore, a person in a moving elevator will not experience a force, therefore a blindfolded person will believe that the elevator is not moving at all

Part B

Yes the person can tell when the elevator begins or stops

When the elevator begins moving, the velocity increases from zero at a rate and the blindfolded person will be able to sense the ground moving further lower under their feet making them feel lighter

Similarly, when the elevator slows down to stop, the initial downward velocity of the elevator is steadily reduced as the elevator decelerates. The blindfolded person will be able to sense the slowing down (braking) of the elevator experiencing an increased upward force from the floor of the elevator, with the feeling of slightly increased weight

Step-by-step explanation:

Answer:

[tex]14130 {ft}^{3} [/tex]

Answer:

9x^4=6,561x

6x^2=36x

6561x+36x=6597x

Step-by-step explanation:

9x to the 4th power is just 9x9=81x9 and so on and the same goes for 6 then you just add them. Not Sure if this is the way you needed but feel free to ask anything.

Answer:

Could you mark me brainlleist? Anyways the answer is [tex]3x^{2} \\[/tex]([tex]3x^{2}[/tex] + 2).

Step-by-step explanation:

Answer:

y = (x + 5)2 – 10 in  standard form 2 x − y = 0

Answer:

See explanation for answer.

Step-by-step explanation:

Ok, so I'm not entirely sure if this answer is correct but for the equation y = (x + 5)2 – 10 I beleive that the equation in standard form would be y = 2( x + 5 ) - 10.

I hope this helps!

Have a great day!

Answer:

Dead ends :)

Step-by-step explanation:

Answer:

864

Step-by-step explanation:

Answer:C 864cm

Step-by-step explanation:

Answer:

$1,440

Step-by-step explanation:

Interest = principal x rate x time

I = 4000(.12)(3)

I = 1440

Answer:

$5440 (in total) or $1440 (in interest)

Step-by-step explanation:

12% of $4000= $480

480×3= $1440

4000+1440= 5440

Answer:

Rotation or reflection

Step-by-step explanation:

Answer:

LH: 5 x 7 = 35 m²

LW: 5 x 4 = 20 m²

WH: 4 x 7 = 28 m²

Add and Double: 35 + 20 + 28 = 83 m², 83 x 2 = 166 m²

Surface Area: 166 m²

Answer:

B. 3

Step-by-step explanation:

So because in the text it says 16 students go to bed before midnight, that mean the left bottom side is 5 based on simple math. if we add the total we have so far, 16 + 1 we have 17. Because there was a total of 20 students we know there are 3 left, the top right box that is left.

Answer:

d < -7

Step-by-step explanation:

-38d - 57 > -19d + 76

Add 19d to both sides

-19d - 57 > 76

Add 57 to both sides

-19d > 133

Divide both sides by -19

(when multiplying or dividing by a negative the inequality is reversed)

d < -7

Answer:

d < -7

Step-by-step explanation:

-38d - 57 > -19d +76

Add 19d and 57 to both sides

-19d > 133

Divide both sides by -19 (dividing by negative flips the inequality sign)

d < -7

change 3/4 to 6/8 and add 6/8 and 1/8 to get 7/8

he walked 7/8 miles in total :)