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3 years ago

An angle measures 12°. Find its complement. Do not include units in your answer.

Mathematics

2 answers:

polet [3.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

complements = 90

x + 12 = 90

-12. -12

× = 78

shtirl [24]3 years ago

8 0

If two angles are complementary,

then the sum of their measures is 90 degrees.

If two numbers add to 90, we can represent those numbers as x and 90 - x.

So we will call one of our angles x and its complement as 90 - x.

So we have 90 - 12 which is 78.

So the complement of a 12° angle is a 78° angle.

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Scientific notation

tatiyna

Answer:

51,760

Step-by-step explanation:

Move the decimal place 4 tens places to the right (Positively)

51,760

I hope this helped!

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2 years ago

Oliver and his three friends equally share the cost of an Uber to go to the movies. The total Uber fare is $12.80. How much mone

PIT_PIT [208]

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3 years ago

Use the discriminant to determine the number of solutions and types of solutions for the quadratic equation, below. Then answer

Setler79 [48]

Answer:

A. Discriminant = 116

B. Number of solutions for the quadratic equation = 2

C. Type of solutions (circle one):Imaginary

D. Type of solutions (circle one):irrational

Step-by-step explanation:

The given quadratic equation is

${x}^{2} + 8x = 13$

We rewrite in standard form to get;

${x}^{2} + 8x - 13 = 0$

The discriminant is

$D = {b}^{2} - 4ac$

where a=1, b=8, c=-13

We substitute to get:

$D = {8}^{2} - 4 \times 1 \times - 13$

$D = 64 + 52$

$D = 116$

Since the discriminant is great than zero, we have two distinct real roots

6 0

3 years ago

A spinner has 12 equal sections:5 red 4 green and the rest are black. In 921 spins how many times can you expect to spin black?

Komok [63]

Answer:

230

Step-by-step explanation:

12 sections total

5 red, 4 green, the rest black

12-5-4 = 3 sections are black

3/12 = 1/4 of the sections are black

1/4 represents the probability of landing on black for one spin

(1/4)*921 = 230.25 which rounds to 230

We expect to land on a black section about 230 times out of 921 times total.

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3 years ago

Janelle is in charge of bringing in dry erase markers for everyone in her math group to use to work on a project. She brings 3 m

Papessa [141]

Let x represent the number of students in Janelle’s group. If Janelle brings 3 markers for each person in her group, then she brings 3x markers for x students. You also know that she brings 5 extra markers for everyone to share. Thus, the total amount of markers she brings is 3x+5.

If Janelle brings in 23 markers in all, then the equation 3x+5=23 represaents the mathematical model. 

3x=23-5,3x=18,x=6

Answer: there are 6 students in Janelle's group.

8 0

3 years ago

Read 2 more answers