Answers
Hi ;-)
[tex]x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4[/tex]
Related Questions
What's (9+9i)(-1-5i) using foil method
Answers
Answer:
36-54i
Step-by-step explanation:
(9+9i)(-1-5i)
v
-9-9×5i-9i-9i×5i
v
-9-45i-9i-45i^2
v
-9-45i-9i-45×(-1)
v
(-9)-45i-9i+(45)
v
36(-45i)(-9i)
v
36-54i
Plz help what is
1 2/5 - (-3/5)
Answers
Step-by-step explanation:
1 2/5 - (-3/5)
1 2/5 + 3/5
7/5 + 3/5
10/5
If a >b, then A must be positive number.
Answers
Step-by-step explanation:
NO,IT DEPENDS UPON SITUATIONS
IF B IS -5 THEN A CAN BE -2,-4,-3 OR 1 ,2,3,4,......
Which fraction is equivalent to 7/8 ?
A. 5/6
B. 17/18
C. 21/24
D. 49/64
Answers
Answer:
C.21/24 it is equivalent fraction to the 7/8
Step-by-step explanation:
7×3=21
8×3=24
Answer:
C
Step-by-step explanation:
If you divide both the numerator and denominator of 21/24 by 3, you will get 7/8. Therefore, 7/8 is essentially the simplified form of 21/24.
Scores 18 20 16 13. Find this student's mean quiz score
Answers
Answer: 16.75
Step-by-step explanation:
Answer:
16.75
Step-by-step explanation:
To find the mean, add up all the number
18+20+16+13
67
Then divide by the number of quizzes
67/4
16.75
Solve 4/5x + 1/3 = 3
Answers
The answer is 10/3.
6 bannas cost $0.75. How much do 20 bannas cost
Answers
Answer:
15
Step-by-step explanation:
Answer:
The answer is 15
Step-by-step explanation:
Mr. jovanovski is having wood flooring
Answers
Answer:
By definition the area of a rectangle is:
A = l * w
Where,
l: long
w: width
So we have to clear the width:
w = A / l
Substituting the values:
w = (234) / (18) = 13
w = 13 feets
answer
the width, in feet, of the room is 13
Step-by-step explanation:
can someone help me with this one again bc I didn't show the decimal Decimal: 0.44
Answers
Step-by-step explanation:
The answer is 10 times
=> 4 hundredths x 10 = 4 tenths
=> 0.04 x 10 = 0.4, which is correct
Hope that helps
a. (2 + 4) + 5( − 1) − ( + 7)
b. (74 + 9) − 2(4 + 13)
c. (6 − − 4) + (9 + 4)
d. (5 − 2)+ 6(2 − 8) − (2 + 12)
e. (83 + 5) − 3(3 + 2)
f. (12 + 1) + 2( − 4) − ( − 15)
g. (132 + 5) − 2(2 + 1)
h. (9 − − 2) − 3
(8 + 22)
i. (4 + 6) − 12( − 3)+ ( + 2)
j. (154 + 10) − 12(4 + 4)
Answers
b) 49
c)23
d)-47
e)73
f)20
g)131
h)-79
i)48
j) 68
Simplify show all steps thirty POINTS!
Answers
Hope it helped
Since you have to divide 6a AND 9 by 3 :)
Name 10 different rays. Then name 2 pairs of opposite rays.
I simply need to check answers!
Answers
Answer:
Rays are.DA,CB,AB,EA,CA,CD,EB,BC, rest I don't know
please solve this question i need help
Answers
Answer:
4c/2a 60 degrees 3bf 2ad
Answer:
f=120
b=40
d=140
e=120
c=30
a=30
Find the missing angle.
Answers
Answer:
Angel V = 74
I hope it's helps you
find the midpoint of R(5,3) and S(-4,6) PLEASEEE
Answers
Answer:
(0.5, 4.5)
Step-by-step explanation:
midpoint formula:
((sum of the two x values)/2, (sum of the two y values)/2)
= ((5+(-4))/2 , (6+3)/2)
= (0.5, 4.5)
what passes through the points (-1/2 4) and (1/2 6). show your work
Answers
Step-by-step explanation:
The equation of line which passes through these points is determined by:
p(x1,y1)=(-1/2,4) p(x2,y2)=(1/2,6)
[tex] \frac{y - y1}{y2 - y1} = \frac{x - x1}{x2 - x1} \\ \frac{y - 4}{6 - 4} = \frac{x + \frac{ 1}{2} }{ \frac{1}{2} + \frac{1}{2} } \\ \frac{y - 4}{2} = \frac{2x + 1}{2} \\ 2(2x + 1) = 2(y - 4) \\ 4x + 2 = 2y - 8 \\ 4x - 2y + 2 + 8 = 0 \\ 4x - 2y + 10 = 0[/tex]
Note:if you need to ask any question please let me know.
4) When you get to college you will be assigned a new Student Identification Number. If this ID is
5 number digits and 2 letters long, how many possible students can the school accommodate?
Answers
This gives you 10*10*10*10*10*26*26 possible combinations, or that many possible students who can use that system.
That’s 67,600,000 students.
YOU WILL GET 100 POINTS!!
Y=4+∣9-16∣
Answers
Answer:
y = 11Step-by-step explanation:
y = 4 + |9 - 16| =
4 + | - 7| =
4 + 7 =
11
An absolute value is always positive:
|a| = a, if a > 0|a| = -a, if a < 0Done
38 = x − 4(x + 1)
help pls
Answers
Answer:
Given :-[tex]\huge38 = x - 4(x + 1)[/tex]
On calculation:- [tex]\large=>38 = x - 4x - 4[/tex]
[tex]\large=>38 = - 3x - 4[/tex]
[tex] \large=>- 3x = 38 + 4[/tex]
[tex]\large =>- 3x = 42[/tex]
[tex]\large =>x = \frac{42}{ - 3} [/tex]
[tex]\large =>x = -14[/tex]
▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂
Hence, Your answer :-[tex]\huge\green{ x = -14}[/tex]
Write an equation in slope-intercept form for the line with slope -3/2 and y -intercept -3
Answers
Answer:
It is
[tex]{ \underline{ \sf{y = - \frac{3}{2}x - 3 }}}[/tex]
Step-by-step explanation:
General equation:
[tex]{ \sf{y = mx + c}}[/tex]
m is the slope
c is the y-intercept
[tex]y = - \frac{ 3}{2} x - 3[/tex]
PLEASE HELP WITH EXPLANATION NO LINKS OR I Will Report You
Answers
Answer:
none of above
Step-by-step explanation:
please mark me brainleast
Answer: a because 2 negatives equals a positive
Step-by-step explanation:
278 kg to pounds, rounded off to the nearest pound.
Answers
Answer:
About 613 pounds
Step-by-step explanation:
1 : 2.20462262
278 : 612.885089
612.885089 --> 612.89 --> 612.9 --> 613
Solve the following equation.
X - (-6) = 15
Answers
Answer: x=9
Step-by-step explanation:
x-(-6)=15
first the subtraction sign and the negative sign becomes a plus sign
x+6=15
-6 -6
Next you subtract 6 from both sides of the equation. And that leaves you with
x=9
A worker earns the same amount for each
hour. If he earned $48.00 in 3 hours, how
much would he earn in 8? In 40?
Answers
Answer: 8 hours= $128 40 hours= $640
Step-by-step explanation:
$48.00 divided by 3 = $16.00 an hour. so 16x8=128 and 16x40=640
The area of this shape is 24 square units. Which of these statements is true about the area ?
Answers
Because the area of an object is number of square units or square grids inside the shape.
Answer:
D.
Step-by-step explanation:
please help with math
Answers
2.) -1.5, 3/4 (which, in decimal, is 0.75) , 3, sqrt 10 (which, in decimal, is about 3.1622…)
3.) -3/2 (which, in decimal, is -1.5), -3/7 (which, in decimal, is about -0.4285…) , 0.75, 2
If you were to take a longitudinal section from a long cylinder, what shape would you get? Question 23 options: A circle A parallelogram A square A rectangle
Answers
Answer:
A Rectangle
Step-by-step explanation:
A longitudinal section means that the plane slicing the cylinder is vertical, just as a latitudinal section means that the slice is horizontal.
When you think about it, a flat slice of a cylinder in the vertical direction is a rectangle.
If the cylinder is sliced along the length of the cylinder then the shape we get is a rectangle. Then the correct option is B.
What is a cylinder?A cylinder is a closed solid that has two parallel circular bases connected by a curved surface.
If you were to take a longitudinal section from a long cylinder.
Then the shape we get will be
If the cylinder is sliced along the length of the cylinder then the shape we get is a rectangle.
More about the cylinder link is given below.
https://brainly.com/question/3692256
Evaluate the number sequence. What number should come next in this following sequence? 6, 2, 12, 4, 24 =
Answers
Answer: Either 6 or 8
Explanation:
Notice that the first, third and fifth values are: 6,12,24. It appears the pattern here is "times 2". So we double each value to get the next item. This only seems to apply for the odd numbered slots.
For the even number slots, we have the pattern: 2,4. The next item isn't clear. We could do two things
add 2multiply by 2If we go with the first option, then we have 4+2 = 6 as the next term
OR
If we go with the second option, then we have 4*2 = 8 as the next term
Unfortunately, there isn't enough information to know which would actually be the next term. A common problem with sequence problems like this is that there are often many ways to generate the same subsequence, which leads to ambiguity as to what the next term would be.
can 0.462 be written as a fraction and is it a terminating or repeating decimal
Answers
Answer: 462/1000
Step-by-step explanation:
HELP PLS IM BEGGING YOU PLS HELP, its due todayyy pls. Angle CBD is the only one i got right and the rest is wrong. I dont know how to answer it anymore.
Answers
Answer:
try It would be number 81
Step-by-step explanation:
Abc= 110
ceo=70
dbe=110 or 120
and abe= 60 70 or 81
Answer:
ABC=112 degrees
DBE=112 degrees
ABE=68 degrees
Step-by-step explanation:
CBD=ABE
ABE=68 degrees
First let's take these as X,
ABC=DBE=X(Vertically opposite angles)
ABC+DBE+CBD+ABE=360(angles around a point)
x + x +68 +68 =360
2x +136 =360
2x =360-136
2x = 224
x =112 degrees
therefore;
ABC=112 degrees
DBE=112 degrees