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
shepuryov [24]
3 years ago
5

The product of two consecutive integers is 420. Which quadratic equation can be used to find x, the lesser number?

Mathematics
2 answers:
Fittoniya [83]3 years ago
8 0

Answer:

0 x2+2=420

Step-by-step explanation:

Rudiy273 years ago
3 0

Answer:

2nd one

Step-by-step explanation:

x(2) + 2 = 420

you can use trial and error

210(2) = 420 but we need to add the two so lower the 120

209(2) = 418  418 + 2 = 420

You might be interested in
Three fences on a ranch measure 15/16 miles 7/8 miles and 7/16 miles which is the best estimate of the total length of all three
gizmo_the_mogwai [7]
2.25.....
......
....
...
6 0
3 years ago
HELP ASAP FOR BRAINLIEST!
salantis [7]

Answer:

  1. make sure calculator is in "radians" mode
  2. use the cos⁻¹ function to find cos⁻¹(.23) ≈ 1.338718644

Step-by-step explanation:

A screenshot of a calculator shows the cos⁻¹ function (also called arccosine). It is often a "2nd" function on the cosine key. To get the answer in radians, the calculator must be in radians mode. Different calculators have different methods of setting that mode. For some, it is the default, as in the calculator accessed from a Google search box (2nd attachment).

__

The third attachment shows a graph of the cosine function (red) and the value 0.23 (dashed red horizontal line). Everywhere that line intersects the cosine function is a value of A such that cos A = 0.23. There are an infinite number of them. You need to know about the symmetry and periodicity of the cosine function to find them all, given that one of them is A ≈ 1.339.

The solution in the 4th quadrant is at 2π-1.339, and additional solutions are at these values plus 2kπ, for any integer k.

__

Also in the third attachment is a graph of the inverse of the cosine function (purple). The dashed purple vertical line is at x=0.23, so its intersection point with the inverse function is at 1.339, the angle at which cos(x)=0.23. The dashed orange graph shows the inverse of the cosine function, but to make it be single-valued (thus, a <em>function</em>), the arccosine function is restricted to the range 0 ≤ y ≤ π (purple).

_____

So, the easiest way to answer the problem is to use the inverse cosine function (cos⁻¹) of your scientific or graphing calculator. (<em>Always make sure</em> the angle mode, degrees or radians, is appropriate to the solution you want.) Be aware that the cosine function is periodic, so there is not just one answer unless the range is restricted.

__

I keep myself "unconfused" by reading <em>cos⁻¹</em> as <em>the angle whose cosine is</em>. As with any inverse functions, the relationship with the original function is ...

  cos⁻¹(cos A) = A

  cos(cos⁻¹ a) = a

5 0
3 years ago
Palm Bay Magnet High School 2019-20
Elenna [48]

Answer:

y=-4x-15

Step-by-step explanation:

[in picture]

5 0
3 years ago
The record low temp in Fargo, ND is -37*F. The record high is 109*F. What is the difference in the record high and the record lo
yuradex [85]

Answer:

109 - -37 = 146

Step-by-step explanation:

since you are subtracting a negative, the negative number and the sign cancel each other out. So all you have to do is add.

6 0
2 years ago
The following graph shows a proportional relationship.
elena-s [515]

Answer:

The constant of proportionality is thus 1

Step-by-step explanation:

Note that the green line passes through (6, 6) and has a y-intercept of 0.  Thus, the equation of the line is y = (6/6)x + 0, or y = x, or y = 1x.

The constant of proportionality is thus 1, which is also the slope of this line.

8 0
2 years ago
Other questions:
  • What is the equation of a line passing through the points 6,3 and -4,3 so y=?
    8·1 answer
  • What is the equation of the graphed line?<br> (2,6),(-64,-)<br><br> ____________
    10·1 answer
  • 948÷ 10 to the 3rd power
    10·1 answer
  • P=IRT literal equations
    11·1 answer
  • ere is a picture of a cube and the net for this cube. What is the surface area of this cube? A. 1,350 mm2 B. 450 mm2 C. 225 mm2
    11·1 answer
  • What is the value of x in sin 29° = cosx?<br> 29 degrees<br> 61 degrees<br> 1 degree<br> 151 degrees
    9·1 answer
  • Find the x value of x+3=8
    15·2 answers
  • The numbber 14 is less than the number of hours nathans volleyball team trains in a week which of the follwoing inequalities rep
    11·1 answer
  • Monthly sales of water heaters are normally distributed with a mean of 21 and a standard deviation of 5. What is the probability
    9·1 answer
  • Mollie had a 15–ounce cappuccino at her neighborhood coffee shop. The cappuccino had 170 calories. If Mollie walks for one hour,
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!