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

I really need help with 9 and 10. If you can help I’ll figure out how to give your brainliest.

Answers

Answer:

2 and 5[89] .........................

A school ordered 32 orange shirts, 29 blue shirts, and 34 green shirts. The shirts are being divided equally among 6 classrooms. If each classroom gets the same number of shirts, how many shirts will be left over?
A.
2
B.
4
C.
5
D.
3

Answers

Answer: D

Step-to-step explanation:

Answer:

Step-by-step explanation:

The orange shirts will have 32/6 = 5 with 2 left over

The blue shirts will have 29/6 = 4 with 5 left over

The green shirts will have 34/6 = 5 with 4 left over

The left overs are 2 + 5 + 4 = 11 but I have divided the colors equally. If color does not matter then the total number of shirts = 32 + 29 + 34

The total number of shirts is 95

95/6 = 15 with a remainder of 5

So 5 shirts will be left over.

help me please !!!!! no fakes or get reported!

Answers

Answer:

1. 7 = 35

The tomato plant will be 35 cm tall after 7 weeks.

2. I don't this is a realistic demonstration of a tomato plant growth, because it is in a table

3. We could use variable h to represent the height of a tomato plant, and I chose this variable because height starts with the letter h.

4. We could use variable w to represent the number of weeks the plant has grown, and I chose this variable because weeks starts with the letter w.

5. 5w = h

6. 5*20 = 100

The tomato plant will be 100 cm tall after 20 weeks.

Step-by-step explanation:

Have a nice day!

and can I maybe have brainliest?

Michael owns a small business selling clothing. He knows that in the last week 39 customers paid cash, 30 customers used a debit card, and 2 customers used a credit card. Based on these results, express the probability that the next customer will pay with a credit card as a decimal to the nearest hundredth.

Answers

Answer:

0.03

Step-by-step explanation:

12 donuts cost $6.96. What is the unit rate for one donut?

Answers

Answer:

6.96/12

= 0.58

Step-by-step explanation:

each donut costs $0.58. you can check the work by plugging 12 in for x. (0.58x)

i hope this helps :)

which expression is equivalent to
-2(x+4) -(3x+8)?
A) 5x+16
B) 5x-16
C) -5x+16
D) -5x-16

Answers

Answer:

Step-by-step explanation:

-2x - 8 - 3x - 8

= - 5x - 16

I need help on this, please help

Answers

Step-by-step explanation:

Answer:

750 minutes would be your answer

Step-by-step explanation:

Someone help plz make sure it’s right and plz put an actual answer

Answers

Answer:

Option 3

Step-by-step explanation:

By applying Pythagoras theorem in the given triangle,

(Hypotenuse)² = (Leg 1)² + (Leg 2)²

x² = (9.5)² + (10.5)²

x² = 200.5

x = √(200.5)

x = 14.16

x ≈ 14.2

Therefore, measure of the unknown side is 14.2 in.

Option (3) will be the correct option.

The regular price of a pair of Rothy's (water bottle shoes) is $145. They are on sale for 38% off. What is the sale price?

Answers

Answer:

$89.90

Step-by-step explanation:

38% corresponds to the decimal fraction 0.38.

The amount of the discount is 0.38($145), or $55.10. Subtracting this amount from the regular price yields $145 - $55.10 = $89.90.

A faster way of doing this problem is to subtract 0.38 from 1.00, obtaining 0.62, and then multiplying $145 by this 0.62: $89.90.

I need help ASAP!!

The height of a right pyramid with a square base is 4 feet. The length of a side of the
base of the pyramid is 6 feet. What is the slant height, s, of the pyramid?

Answers

Answer:

i think its 6

Step-by-step explanation:

i dont know for sure

could someone explain? i don't understand what to do

Answers

Answer:

112 degrees

Step-by-step explanation:

A triangle is comprised of 180 degrees.

34 + 34 = 68

180 - 68 = 112 degrees

For questions 3 and 4, you will be answering by filling in the blanks. Please be aware that your answer must include any commas or decimals in their proper places in order to be correct. The dollar signs have been provided. For example, if the answer is $1,860.78, then you will enter into the blank 1,860.78. Do not place any extra spaces between numbers, commas, or decimal places. Round any decimals to the nearest penny when the answer involves money, so that $986.526 would be typed into the blank as 986.53 and $5,698.903 would be typed into the blank as 5,698.90

Answers

To find the monthly difference in median income find the median income of a woman with a bachelor's degree and one without it then subtract. To find the hourly difference find the hour income of women and men with an advanced degree and then subtract.

What is the median?

The median refers to the value that is placed right in the middle of other values. For example, if the values are 5, 9, 4 the median is 9.

How to solve the first question?

This question requires you to:

Find the median of a woman with a bachelor's degree and one with only high school and some college. To do this look for the values placed in the middle.Subtract both values.

How to solve the second question?

This quetion requiers you to:

Find the hourly income of a man and a woman with an advanced degree. To do this divided the week or monthly income into the number of hours they work.Subtract the two results to find the difference.

Note: This question is incomplete because there is no information provided about women's income; due to this, I answered based on general knowledge.

Learn more about median in: https://brainly.com/question/300591

Answer:

the answer is 86

Step-by-step explanation:

i did the assignment on gradpoint

i need help with trigonometric pleasee

Answers

Answer:

Step-by-step explanation:

Cos(61) = 0.4848

This is more or less the value of cos(60) which is 1/2

You know you are in trouble when a question says approximately. How approximate is approximately. My guess, and it is a guess, is that this means the nearest degree. That would be 14 degrees. The more exact answer is 13.80 and that zero matters. It is a place holder.

Sin(67) = 0.9205 Again, how approximate is approximate? Try 0.92 as your answer.

Tan (18) = 0.3249 Try tan(18) = 0.3

Q1 (pic 1)
Triangle ABC is similar to triangle WYZ.

Select all angles whose cosine equals 35.

Question 1 options:

Angle W

Angle Y

Angle C

Angle B

Angle Z

Angle A

Q2 (pic 2)
Triangle ABC is similar to triangle WYZ.

Determine whether the following statement is true or false.

sin(B)>sin(Y)
Question 2 options:
True
False

Answers

Answer:

Question 2 = True

I don't know the first question, the test wouldn't tell me:/

Angle C, Angle Z, Angle A, and Angle W are all angles whose cosine equals 35 and the statement that Sin B is greater than Sin Y is false.

What is a similar triangle?

The two triangles are said to be similar that have the same proportion of sides and angles.

Corresponding sides are in the same ratio.

a/p = b/q = c/r

In triangle ABC

AB = 5, AC = 3, BC = 4

Cos A = base/ hypotenuse

= 3/5

Cos B = base/ hypotenuse

= 4/5

Cos C = base/ hypotenuse

= 3/5

In triangle WYZ

Cos W = base/ hypotenuse

= 3/5

Cos Z = base/ hypotenuse

= 4/5

Hence, Angle C, Angle Z, Angle A, and Angle W are all angles whose cosine equals 35.

In triangle WYZ

WY = 13

In triangle ABC

CB = 24, AC = 10

Sin B = Perpendicular/ hypotenuse

= 10/26

Sin Y = Perpendicular/ hypotenuse

= 5/13

Since both angles are equal also they are similar to each other.

Therefore, the statement that Sin B is greater than Sin Y is false.

Learn more about similar triangles;

A rocket is launched from a tower. The height of the rocket, y in feet, is
related to the time after launch, x in seconds, by the given equation.
Using this equation, find out the time at which the rocket will reach its
max, to the nearest 100th of a second.

y = 16x^2+ 238x + 81

Answers

We need the max height as well

Answer: 7.44

Step-by-step explanation: DeltaMath

Romeo has captured many yellow-spotted salamanders. He weighs each and
then counts the number of yellow spots on its back. Which trend line best fits
the data?

Answers

Answer: D.

Step-by-step explanation:

Answer:

It's D

Step-by-step explanation:

I took the AP3X quiz and got it right. Just make sure you don't just click D on your end without looking at the graph in the question.

Michelle and Natasha each had to repair their new iPhones. The initial cost of each repair is $100. Michelle and Natasha each have two discount coupons. Each of them uses both coupons toward the cost of the repair. One coupon is for $25 off the repair cost and the other coupon is for 20% off the repair cost. Michelle and Natasha use their coupons in a different order, as shown below.

Michelle uses the 20% off the repair cost coupon first. She then uses the $25 off the repair cost coupon on the remaining balance.

Natasha uses the $25 off the repair cost coupon first. She then uses the 20% off the repair cost coupon on the remaining balance.

Who paid the least amount of money for the iPhone repair?

Answers

Answer:

natasha paid the least amount

Write the equation of the line that passes through the points (9, -8) and (-7,3).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line.

Answers

Answer:

y=-0.6875x -1.8125

y= -11/16x -29/16

Step-by-step explanation:

I NEED HELP!!!

Find the area of this figure

Answers

Answer:

265 yd squared

Step-by-step explanation:

We can solve this problem by taking the little triangle on the left side and moving it to the right to get a rectangle, and from there we can find the area like its a rectangle

21.2*12.5=265

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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

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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