Mathematics High School

Which equation has no real solutions?
A 2x2 + 2x + 15 = 0
B 2x2 + 5x – 3 = 0
C 1 x2 + 7x + 2 = 0
D x2 - 4x + 2 = 0

Answers

Answer 1
A has no real solution. See the picture below for details.
Which Equation Has No Real Solutions?A 2x2 + 2x + 15 = 0B 2x2 + 5x 3 = 0C 1 X2 + 7x + 2 = 0D X2 - 4x

Related Questions

5 weeks 4 days -3 weeks 6 days. _____________

Answers

Answer:

1 week 8 days

that's the pattern

subtract 2 weeks add 2 days

brainliest would be nice

have a nice day

Step-by-step explanation:

Answer:

8 weeks

Step-by-step explanation:

Rob's office recycled a total of 12 kilograms of paper over 2 weeks. How many weeks will it
take Rob's office to recycle a total of 18 kilograms of paper? Assume the relationship is
directly proportional.
weeks

HOW MANY WEEKS ???

Answers

Answer:

3 unless you're adding onto the 12 kilograms, then only 1

Step-by-step explanation:

A right triangle has an angle measure of 52.4 degrees. What is the value of 'x', the missing angle?

Answers

In every triangle the sum of the three angles = 180°

If you have a right angled triangle it means one angle is 90°

So 90°+52.4°+ x = 180°

x=180-52.4-90
x=37.6°

Help me somebody please

Answers

It’s not clear try posting a better pic !

HELP PLEASE NO FAKE ANSWERS I WILL MARK BRAINLIEST

Answers

133°
There is a 90° angle so add that to 43° you get 133°
Your answer is 133°
:)

Gloria says the two expressions -2(3x-3) and -6x+1 are equivalent. Is She correct? Explain how you know.
​

Answers

Answer:

No she is not correct .

Step-by-step explanation:

Given

-2(3x-3)=-6x+1

simplify the right hand side

-6x+6 that is not equal to -6x+1

Determine the value of y for y=x-6

Answers

Answer:

(From left to right)

y = -13; -12; -3; -1; and 1

Step-by-step explanation:

what is the value of x in this equation??
15(20+x)=420

Answers

Answer: 8

Step-by-step explanation:

15x+300=420

x = 8

Hope this helps!

Which equation represents a line that passes through the points (7,5) and (6, 1)?​

Answers

the slope of the line is 4

A little girl throws her jackstone ball horizontally out of the window with a velocity of 30 m/s. if the window is 3 m above the level ground, how far will the ball travel before it hits the ground?​

Answers

Distance (d) is 23.46 meters
Workup in the photo below.
Good luck.

( x-4)(x-6) = how do you solve this problem

Answers

First you expand the expression
Then expression is equals to 0
And you can solve for X

What is the answer help plz​

Answers

Answer:

2. 77.9

Step-by-step explanation:

I think its that i looked up the formula sorry if im wrong

A factory store has two types of machines.
The factory has 6 cutting machines and 4 stamping machines.
Each cutting machine cuts 105 parts every 3 minutes.
Each stamping machine stamps 24 parts every 20 seconds.

One of the cutting machine is shut down for repairs How many parts can the remaining machines cut in
412 hours?
788 parts
2,363 parts
28,350 parts
47,250 parts

Answers

Answer:

c or d maybe d

Step-by-step explanation:

(7) hi I'm new can I get some help I really don't know what to do!

Answers

Answer:

60

Step-by-step explanation:

ez

Answer:

60

Step-by-step explanation:

to find the area of a trapezoid you do (a+b)/2 x h

so to find the area of yours you do (18+6)/2 x h

18 + 6 = 24

24 divided by 2 = 12

12 x 5 = 60

Tell if the Ratio is Part-to-part or part-to-whole

4 apples to 3 oranges

Answers

Answer: Part-to-part

Step-by-step explanation:

This is a part-to-part, because they show part of apples, and part of oranges. This ratio when set up is 4:3. If the ratio was part-to-whole, then the apples would be compared to the total amount of oranges and apples. The ratio for part-to-whole would be 4:7.

Hope this helps!

what is the value of this​

Answers

Answer: 5.0625 or 5 1/16

Step-by-step explanation:

im smart

A conical termite mound has a height of 1.4m and a base of radius 60cm if there are three termites per cubic centimeter, how many termites inhabit the mound?

Answers

Answer:

1583362.7 termites

Step-by-step explanation:

A conical termite mound has a height of 1.4m and a base of radius 60cm if there are three termites per cubic centimeter, how many termites inhabit the mound

The formula for the volume of a cone

= πr²h/3

Radius = r = 60cm

Height = h = 1.4 m

Converting to centimeters.=

1m = 100cm

1.4m = x

x = 1.4 × 100cm = 140 cm

Volume of the cone = π × 60² × 140/3

527787.5658 cm³

From the above question

1cm³ = 3 termites

527787.5658 cm³ = x

Cross Multiply

x = 3 × 527787.5658

x = 1583362.6974 termites

Approximately.= 1583362.7 termites

Answer:A conical termite mound has a height of 1.4m and a base of radius 60cm if there are three termites per cubic centimeter, how many termites inhabit the mound

Step-by-step explanation:

Please help! 50 points,, I REALLY need someone to answer these correctly so dont just answer for points pleasseee,,.
Instructions
Search your home for a rectangular prism. Some examples are a cereal box, a CD case, or a coffee table. Measure your prism using appropriate units, such as inches, centimeters, or feet. (you can aslo make something up- as long as its an object that you can find in a house)

Complete ALL OF THESE. Show ALL work for calculations.

List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.).
Describe the shape of the cross section when the box is cut parallel to the base.
What is the surface area of the box?
What is the surface area of the box if it is scaled up by a factor of 10?
What is the volume of the box?
What is the volume of the box if it is scaled down by a factor of 1/10

Answers

Answer:

I chose a box of cereal-------> rectangular prism

see the attached figure

Part 1)List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.).

Length: 20 cm

Width: 8 cm

Height: 32 cm

Part 2).

Describe the shape of the cross-section when the box is cut parallel to the base

the shape of the cross-section would be a rectangle of dimensions

20 cm x 8 cm

Part 3)

What is the surface area of the box?

surface area=2*area of the base+perimeter of the base*height

area of the base=20*8=160 cm²

perimeter of the base=2*[20+8]-----> 56 cm

height=32 cm

surface area=2*160+56*32------> 2,112 cm²

the answer part 3) is

2,112 cm²

Part 4)

What is the surface area of the box if it is scaled up by a factor of 10?

we know that

surface area of the larger box=[scale factor]²*surface area original box

scale factor=10

surface area original box=2,112 cm²

so

surface area of the larger box=10²*2,112-----> 211,200 cm²

the answer part 4) is

211,200 cm²

Part 5)

What is the volume of the box?

volume of the box=L*W*H-----> 20*8*32------> 5,120 cm³

the answer Part 5) is

5,120 cm³

Part 6)

What is the volume of the box if it is scaled down by a factor of 1/10

we know that

volume of the smaller box=[scale factor]³*volume original box

scale factor=1/10

volume original box=5,120 cm³

so

volume of the smaller box=[1/10]³*5,120-----> 5.12 cm³

the answer part 6) is

5.12 cm³

Step-by-step explanation:

Can u solve this please? Pythagorean theorem

Answers

Answer:

12.8 ft or exactly sqrt 164

Step-by-step explanation:

Pythagoreans is a^2+b^2=c^2

10^2+8^2=164

sqrt 164 = 12.8 ft

Find the Circumference and Area of the circle with a diameter of 3 inches.

Answers

Answer:

Circumference-18.84956, rounded, 18.85

Area- 28.27433, rounded-38.27

Answer:

C≈9.42in

A≈7.07in²

Step-by-step explanation:

C=2πr

d=2r

C=πd=π·3≈9.42478in

A=πr2

d=2r

A=1

4πd2=1

4·π·32≈7.06858in²

Hope this helps!

Shanice's school is selling tickets to a play. on the first day of ticket sales the school sold 11 adult tickets and 6 student tickets for a total of $154. The school took in $145 on the second day by selling 3 adult tickets and 11 student tickets. find the price of a student ticket.

Answers

Answer:

$319

Step-by-step explanation:

add the money and then what u get for the money add it to the other numbers u have.

I need help please!!

Answers

Answer:

[tex]-\frac{25}{12}[/tex]

[tex]-2\frac{1}{12}[/tex]

What is the answer to the problem? 10 points :)

Answers

The answer is the third one: 255

a box contains 18 blue flashlights 3 red flashlights 7 silver flashlights ans 2 black flashlights. the flashlights are identical in size and shape. if one flashlight is chosen at random what is the probability that the flashlight will be either blue or black?

Answers

Answer:

The answer is 20/30 or in simplified form 2/3

Step-by-step explanation:

The way I do it is I take the probability of blue flashlights, 18/30, added to the probability of black flashlights, 2/30. Then, you simplify by dividing both numbers by 10.

60 POINTS! (Reported if incomplete/absent)
Three neighbors plan to complete fencing projects this spring. As shown in the diagrams below, Neighbor A plans to fence in his rectangular backyard with a 6-foot tall wooden privacy fence. Neighbor B plans to construct a circular chain link fence around his pool. And, Neighbor C is putting a vinyl fence around three side of his front yard. Note: Diagrams are not drawn to scale. Intended fences are marked with a dashed line.

Answers

Answer:

- The neighbor that has the most amount of fence to put up is: Neighbor A.

- The neighbor that has the least amount of fence to put up is: Neighbor C.

Step-by-step explanation:

To calculate the amount of fence that Neighbor A has to put up, you need to add the following distances:

Convert yards to feet (Remember that :

To calculate the amount of fence that Neighbor B has to put up, you need to use the formula for calculate the circumference of a circle:

Where r is the radius.

In this case, the radius is:

Substituting, you get:

To calculate the amount of fence that Neighbor C has to put up, you need to add the following distances:

Therefore, the neighbor that has the most amount of fence to put up is: Neighbor A.

The neighbor that has the least amount of fence to put up is: Neighbor C.

hope this helps btw i just copy and pasted this so its not my work

Answer:

- The neighbor that has the most amount of fence to put up is: Neighbor A.

- The neighbor that has the least amount of fence to put up is: Neighbor C.

Step-by-step explanation:

Jordana is putting a fence around a garden that is shaped like a half circle and a rectangle.

A rectangle with length 28 feet and width 14 feet. A semicircle with diameter 14 feet is on top of the rectangle.

How much fencing will Jordana need? Use StartFraction 22 over 7 EndFraction for Pi.
64 ft
86 ft
92 ft
114 ft
Mark this and return

Answers

Answer:

92

Step-by-step explanation:

What are the answers to these?

Answers

A=10
B=-12
C=3.6



I need to make the answer 20 letters so here’s a cookie


A survey asked 100 adults about car ownership and ride-sharing apps. Of the 38 people without a car, 29 have ride-sharing app on their phone. A total of 47 people have a ride-sharing app on their phone.

What percentage of people surveyed who own a car have a ride-sharing app on their phone? Round to the nearest whole percent.
Enter the correct answer in the box.

Answers

Answer:

it should be 18%

Step-by-step explanation:

Answer PLEASEE (brainlist)

Answers

Answer:

what you just answered

Step-by-step explanation:

2(5) + 3 = 13 so (5,1) is not

Answer:

D is the correct answer.

Step-by-step explanation:

1 times 2 is 2 plus 3 is 5, so its not A

2 times 2 is 4 plus 3 is 7 so its not B

and 3 times 2 is 6 plus 3 is 9 so it cant be C either

Therefore its D.

Help plssss!!! Giving. 10 pointsssssss

Answers

Answer:

its 34

Step-by-step explanation:

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