1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
iragen [17]
4 years ago
13

X 2 + 13x + 40 = 0 solving quadratic

Mathematics
2 answers:
Gnesinka [82]4 years ago
8 0

Answer: x=-5 or x=-8

Step-by-step explanation:

x^2+13x+40=0

x^2 + 8x + 5x +40=0

x(x+8)+5(x+8)=0

(x+5)(x+8)=0

x+5=0 or x+8=0

x=-5 or x=-8

Arte-miy333 [17]4 years ago
3 0
Answer x=-5 or x=-8
You might be interested in
How can I use the golden ratio? Need this answer, stop putting false please.
natulia [17]

Hey, this is photography right?

Step 1: Evaluate the scene

Exactly how you use the golden ratio depends on the scene in front of you. Composition techniques are there to help you think about the scene instead of just pointing and shooting.

Step 2: Determine whether to use the golden ratio or the golden spiral (or even the Rule of Thirds)

Next, choose between the golden spiral and the phi grid. You can’t contort a straight object to fit inside a spiral, so if your scene has great leading lines, try the phi grid.

Step 3: Imagine the overlay and shoot

Imagining a complex spiral aligned over your photo can be tricky at first. If you simplify the concept, it’s a bit easier to manage.

First, check and see which grid overlays your camera has built-in by viewing the options in settings. If your camera has a phi grid or spiral option, turn that feature on. Most will have the Rule of Thirds. Even when that isn’t the composition guide you are using, it’s helpful to enable that feature.

Step 4: Edit

Picturing the phi grid or golden ratio spiral as you shoot is one thing, but what if you want that exact 1.618 magic number? Thankfully Photoshop  (and several other photo editors) have tools for that.

Hope this helped!

7 0
3 years ago
Please help me fast!<br><br> Find the surface area of this cone. Show your work.
k0ka [10]

Answer:

The answer is 628 meters.

Step-by-step explanation:

The area for surface of a cone is pi times the radius (radius plus the square root of the height squared plus the radius squared).

Lol, i know this is really confusing, just look up surface area of a cone formula.

Height squared = 15 * 15 = 225

Radius squared = 8 * 8 = 64

225 + 64 = 289

The square root of 289 is 17

17 + 8 = 25

3.14 * 8 = 25.12

25.12 * 25 = 628 meters.

Could I get Brainliest please?!?!

8 0
3 years ago
17) 10(x + 3) -(-9x - 4) = x-5 +3
navik [9.2K]

Answer:

-2

Step-by-step explanation:

10x+30+9x+4=x-5+3

19x+34=x-2

18x=-36

x=-2

5 0
4 years ago
dalia has 15 more stuffed animals then tori. tori has 28 stuffed animals. how many stuff animals does dalia have
notka56 [123]
43

Explanation: 28+15=43
8 0
3 years ago
44 Alison paid $21.75 for a number of packets of rice crackers. Three packets of rice crackers cost $1.45. How many packets of r
WINSTONCH [101]
1.45 / 3 = 0.48 for 1 pack of crackers.

21.75 / 0.48 = 45.31...so she bought 45 total packs <===

60 x 0.48 = 28.80....so yes, $ 30 would be enough <==


3 0
3 years ago
Other questions:
  • Can someone (preferably one of the long-term tutors) check my answers:
    9·1 answer
  • Question 5<br> Find the sum of the following geometric series.<br> 8+1.6+0.32+0.064 + ...
    5·1 answer
  • Seven added to the product of 10 and k is less than or equal to 47
    6·1 answer
  • Simplify the radical expression by rationalizing the denominator. 9√25/√50
    14·2 answers
  • The triangle will be dilated by a scale factor of 1.5. (a) Calculate the length of each side of the dilated image. (b) Draw the
    5·1 answer
  • Use the model Write the addition sentence. What number sentence does this model show
    8·1 answer
  • the length of a rectangle is 2 cm less than 7 time the width. The perimeter is 60. What is the width and length
    5·1 answer
  • 10.) The length of the sides of a rectangular window have the ratio 1.7 to 1. The area of the windows is 2,720 square inches. Wh
    5·2 answers
  • A piling for a high-rise building is pushed by two bulldozers at exactly the same time. One bulldozer exerts a force of 1850
    15·1 answer
  • What is the volume of the prism? Use the formula V equals B h. Enter the answer in the box.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!