Select all the correct equations.
Which equations have no real solution but have two complex solutions?
3x2-5x = -8
2x2 = 6x - 5
12x = 9x2 + 4
-x2 - 10x = 34?

Answer:

I hope this helps you!!

Step-by-step explanation:

In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane.

Answer:

A) = 9

B) = 22

C) = 42

Step-by-step explanation:

Answer:

7. x = 23

Step-by-step explanation:

They are angles on transversals intersecting parallel lines. Also vertical angels are equal to each other.

So for example question 7 you need to use these two things to realize that 4x is the same angle as (3x + 23) so you have to put them in an equation like this

4x = 3x + 23 and then solve it algebraically

Answer: 96

Step-by-step explanation: Its pretty simple all you have to do is 32*3 because there is 32 people and they all drink 3 cups fruit punch. SO the answer is 96.

The gallons of punch Brenda's mom needs to buy is  6 gallons.

The first step is to convert cups to gallons: 1 cup = 1/16 gallon

The second step is to determine the total number of cups needed for the party: 32 x 3 = 96 cups

Now convert the cups to gallons: 96 x 1/16 = 6 gallons

To learn how to convert units, please check: https://brainly.com/question/25993533

Answer:

55

Step-by-step explanation:

33-88 =

-55

The probability of getting chocolates with harder center is 7/15.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favourable outcomes/Total number of outcomes

Given that, there are 10 chocolates in a box. 7 of the chocolates have soft centers and 3 of the chocolates have hard centers.

Probability of choosing first chocolate with hard center is

Total number of outcomes =10

Number of favorable outcomes =7

Now, probability is 7/10

Probability of choosing second chocolate with hard center is

Total number of outcomes =9

Number of favorable outcomes =6

Now, probability is 6/9

Probability of an event = 7/10 × 6/9

= 7/10 × 2/3

= 7/5 × 1/3

= 7/15

Therefore, the probability of getting chocolates with harder center is 7/15.

To learn more about the probability visit:

https://brainly.com/question/11234923.

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"Your question is incomplete, probably the complete question/missing part is:"

There are 10 chocolates in a box. 7 of the chocolates have soft centers and 3 of the chocolates have hard centers. Kyla takes at random a chocolate from the box and eats it. She then takes at random another chocolate from the box and eats it. Find the probability that Kyla chooses both the chocolates with a hard center.

Answer: The lines intersect at the point (7, 24)

Step-by-step explanation:

We have two lines:

y = 6*x - 18

y = 8*x - 32

We want to find the point at which both lines intersect, this means that there is a point (x, y) that belongs to both lines.

This means that we can write:

6*x - 18 = y = 8*x - 32

Because the y-value should be the same for both lines, then we get:

6*x - 18 = 8*x - 32

Now we can solve this for x.

6*x - 18 = 8*x - 32

32 - 18 = 8*x - 6*x

14 = 2*x

14/2 = x = 7

Now we know that the lines intersect at x = 7, replacing this in any of the two equations we can get the y value at which the lines intersect, let's use the first equation:

y  = 6*7 - 18 = 24

So the lines intersect at the point (7, 24)

Answer:

20 square feet

Step-by-step explanation:

The length of a rectangular deck is five times it's width if the decks perimeter is 24 feet what is the decks area

Step 1

We find the Length and Width of the deck

Perimeter of a rectangle = 2L + 2W

The length of a rectangular deck is five times it's width

W = Width

L = Length = 5W

P = 24 feet

Perimeter = 2(5W) + 2W

24 = 10W + 2W

24 = 12 W

W = 24/12

W = 2 feet

Solving for L

L = 5W

L = 5 × 2 feet

L = 10 feet

Step 2

We find the area of the deck

Area of the deck(Rectangle) = Length × Width

= 10 feet × 2 feet

= 20 square feet

Answer:

about 4

Step-by-step explanation:

just guessed

The number of tablespoons of kernels to use to make 6 cups of popcorn will be 4 tablespoons. Option B is correct.

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

Serena makes 2 1/4 cups of popcorn using 1 1/2 tablespoons of kernels.

Convert the mixed fraction into a fraction number. Then we have

2  1/4 = 9/4

1  1/2 = 3/2

The ratio of cups of popcorn and tablespoons of kernels will be constant.

The number of tablespoons of kernels to use to make 6 cups of popcorn will be given as,

K / 6 = (3/2) / (9/4)

K = 4 tablespoons

The number of tablespoons of kernels to use to make 6 cups of popcorn will be 4 tablespoons. Option B is correct.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

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The answer is D. 115°

Answer:

The answer is also 115 on USA test prep.

Answer:

a) The perimeter of the rectangle =

= 22 units

b) The area of the rectangle

= 30 square units

Step-by-step explanation:

We solve the above question using the formula

= √(x2 - x1)² + (y2 - y1)²

When we are given vertices (x1, y1) and (x2, y2)

The vertices: (-1, -2), (-6, -2), (-6, -8), (-1, -8)

We have to find the length of the sides

Side A

(-1, -2), (-6, -2)

= √(-6 - (-1))² +( -2 -(-2))²

= √-5² + 0²

= √25

= 5 units

Side B

(-6, -2), (-6, -8)

= √(-6 - (-6))² + (-8 - (-2))²

= √(-6 +6)² + (-8 +2)²

= √0² + -6²

= √36

= 6 units

Side C

(-6, -8), (-1, -8)

= √(-1 - (-6))² +(-8 - (-8))²

= √(-1 + 6)² + (-8 + 8)²

=√ 5² + 0²

= √25

= 5 units

Side D

(-1, -2), (-1, -8)

= √(-1 -(-1))² + (-8 - (-2))²

= √(-1 + 1)² + ( -8 + 2)²

= √0 + -6²

= √0 + 36

= √36

= 6 units

From the above calculation,

Side A = Side C = 5 units

Side B = Side D = 6 units

Hence, this polygon is a quadrilateral called the RECTANGLE.

Therefore:

a) The perimeter of the rectangle =

2L + 2W

= 2(5) + 2(6)

= 10 units + 12 units

= 22 units

b) The area of the rectangle

= Length × Width

= 5 units × 6 units

= 30 square units

Answer:

a(9) = 150*(0.4)^8 = 0.098304

Step-by-step explanation:

This is a geometric sequence, because each new term is 0.4 times the previous term.

The general formula for a geometric sequence is a(n) = a(1)*r^(n - 1).  Here, with a(1) = 150 and r = 0.4, we have:

a(n) = 150*(0.4)^(n - 1), and so

a(9) = 150*(0.4)^8 = 0.098304

Answer:

12cm cubed

Step-by-step explanation:

A= base*height/2 so base is 6 just count the squares and height is 4 at the highest point  so just plug those in the formula hopefully its correct

Step-by-step explanation:

The height is 5

and the base is 7

area of triangle = bxh    

                          = 7 x 5

                           = 35 cm2

Answer:

Angles 6 and 2

Step-by-step explanation:

They are in the "interior" of the figure, plus, ik how to do this

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Answer:

not proportional because the 8 hours supposed to equal 250

kcf

keep change flip

5/6x1/4=5/24

Answer:

5/24

Step-by-step explanation:

To divide a fraction by a whole number place one over the whole number and multiply:

[tex]\frac{5}{6}[/tex]×[tex]\frac{1}{4}[/tex]

Then you multiply across the top and bottom and get your answer

[tex]\frac{5}{24}[/tex]

Answer:

<d=90 and <f and <e are both 45?

Step-by-step explanation:

Answer:

90-38 = 52

D = 90

E = 38

F = 52

Step-by-step explanation:

Answer:

21 km

Step-by-step explanation:

I am not too sure if i did answer that correctly but the distance should not change even if it is in different directions

Answer:

$105

Step-by-step explanation:

0.30×150=45

150-45=105

Answer:

Step-by-step explanation:

c

Answer:

C

W'(-3, 4), X'(-1, 0), Y'(-5, 1), Z'(-4, 4)

Step-by-step explanation:

yea

Anwser: -23

Step-by-step explanation:

I knew that because i just did negative and positive numbers on a number line

Answer:

x = 1/2

Step-by-step explanation:

mark brainliest

Answer:b is the answer

Step-by-step explanation:

Answer:

50.84353551

Step-by-step explanation:

the volume of cone= 1/3 × πr²h

putting the value and calculating,

i get the answer.