A postage stamp has a area 1160mm^2. About how long is each side ?

Read the following statements. The sum of the angle measures of a triangle is 180°. Two angles of a triangle measure 40°and

raketka [301]

Answer:

what number must be added to sum of two angles that the sum of three angles become 180.

Since sum of two angles is 100 , 80 must be added to 100 to make it equal to 180.

Step-by-step explanation:

Given

sum of measure of angle of triangle = 180°

given two angles 40°and 60°

Let the third angle be x°

thus

40°+ 60°+x° = 180°

100°+x° = 180°

x° = 180°- 100° = 80°

Thus, third angle measure 80°

She must have sum the first two known angles.

as given sum of three angles are 180

she must have assumed other angle to be x

then sum of all three angles must be 180

now to find third angle she subtracted sum of two known angles to find third angle.

other way can what number must be added to sum of two angles that the sum of three angles become 180.

Since sum of two angles is 100 , 80 must be added to 100 to make it equal to 180.

3 0

3 years ago

Find the equation of the quadratic function with vertex (-2,18) passing through (-5,0)?

Sliva [168]

Answer:

$y-18=-2(x+2)^2$

Step-by-step explanation:

Equation of the Quadratic Function

The vertex form of the quadratic function has the following equation:

$y-k=a(x-h)^2$

Where (h, k) is the vertex of the parabola that results when plotting the function, and a is a coefficient different from zero.

It's been given the vertex of the parabola as (-2,18):

$y-18=a(x+2)^2$

Now substitute the point (-5,0) and find the value of a:

$0-18=a(-5+2)^2$

Operating:

$-18=a(-3)^2$

$-18=9a$

Solving for a:

$a = -18 / 9$

a = -2

Thus, the equation of the quadratic function is:

$\mathbf{y-18=-2(x+2)^2}$

7 0

3 years ago

Explain how you know these two figures are similar.

deff fn [24]

The angle measurements are all the same

7 0

3 years ago

Write 0.2 repeating as a fraction in simplest form.

nalin [4]

0.2 Repeating Decimal is 2/9 as a Fraction

8 0

3 years ago

Read 2 more answers

Selena spends $53.94 to buy a necklace and bracelet set for each of her friends. Each necklace cost $9.99 and each bracelet cost

matrenka [14]

She bought 3 necklace and bracelet sets

Step-by-step explanation:

The given is:

Selena spends $53.94 to buy a necklace and bracelet set for each of her friends
Each necklace cost $9.99
Each bracelet cost $7.99

We need to find how many necklace and bracelet sets she bought

Assume that the number of necklace and bracelet set is x

∵ Selena bought x necklace and a bracelet sets

- Each set contains a necklace and a bracelet

∵ Each necklace cost $9.99

∵ Each bracelet cost $7.99

∴ The cost of one set = (9.99 + 7.99)

∵ She spent on them $53.94

- Add the cost of a necklace and the cost of a bracelet and

multiply the sum by x and then equate the product by 53.94

∴ (9.99 + 7.99)x = 53.94

∴ 17.98 x = 53.94

- Divide both sides by 17.98

∴ x = 3

She bought 3 necklace and bracelet sets

Learn more:

You can learn more about the word problems in brainly.com/question/10557938

#learnwithBrainly

5 0

4 years ago