Answer:
k = -2
Step-by-step explanation:
2 way to solve:
1st: 8x²-13x-4k = 8(x²-(13/8)x-(k/2))
if 2 roots: a and 1/a
8(x-a)(x-1/a) = 8(x²-(13/8)x-(k/2))
x²-(a+1/a)x+1 = x²-(13/8)x-(k/2)
1 = -(k/2)
k = -2
2nd: 2 roots of 8x²-13x-4k x=(-b±√b²-4ac)/2a
x = (13±√169-4*8*(-4k))/16 = (13±√169+128k)/16
(13+(√169+128k))/16 = 16/ (13-(√169+128k)) ... root1=1/root2
(13+(√169+128k))*(13-(√169+128k)) = 16*16
13² - (√169+128k)² = 256
169-169-128k = 256
-128k = 256
k = -2
What is(are) the intercept(s) of the exponential function shown below?
Answer:
option D
Step-by-step explanation:
for x intercept
the curve crosses the x asis at 1
then for y intercept it crosses the y axis at-2
that's all...have fun
What is the length of EF in the right triangle below?
A: 54
B: 24
C: 1296
D: 585
E: 36
F: square root of 576
The number of tenths in 3 3/5
Answer:
18
Step-by-step explanation:
3 × 3/5 = 9/5
9/5 = x/10
x = (9 × 10) ÷ 5
x = 18
Gabe has a great job. He earns money on an hourly basis and he was given a signing bonus to switch jobs. He forgot how much they said they would pay him by hour but on his time card he has at 4 hours he has earned 1,120 and at 10 hours he has earned 1,480. What is an equation that will model this situation? How much money will he earn in a 40 hour work week?
Answer:
Pay for 40 hours would be [tex]\geq 40 * 148[/tex]
Step-by-step explanation:
Gabe works for 4 hours and earns $ 1,120
Pay for one hour is [tex]\frac{1120}{4} = 280[/tex]
When he works for 10 hours, he earns $1480.
Pay for one hour is
[tex]\frac{1480}{10} = 148[/tex]
Thus the per hours pay must be greater than or equal to 148 dollars
Pay for 40 hours would be [tex]\geq 40 * 148[/tex]
x on the top and 24 on the bottom 11 on the top 6 on the bottum
Answer:
x = 44
Step-by-step explanation:
this is a proportion which you can solve by cross-multiplying:
6x = 24·11
6x = 264
x = 264/6
x = 44
Answer:
c
Step-by-step explanation:
AD and MN are chords that intersect at point B.
A circle is shown. Chords A D and M N intersect at point G. The length of A B is 9, the length of B D is x + 1, the length of M B is x minus 1, and the length of B N is 15.
What is the length of line segment MN?
Answer:
[tex]MN = 18[/tex]
Step-by-step explanation:
Given
[tex]AB = 9[/tex]
[tex]BD = x + 1[/tex]
[tex]MB = x - 1[/tex]
[tex]BN = 15[/tex]
See attachment
Required
Determine MN
The products of the segments of two chords that intersect are always, equal.
So, we have:
[tex]AB * BD = MB * BN[/tex]
[tex]9 * (x + 1) = (x - 1) * 15[/tex]
Open bracket
[tex]9x + 9 = 15x - 15[/tex]
Collect like terms
[tex]15x - 9x = 9 + 15[/tex]
[tex]6x = 24[/tex]
Solve for x
[tex]x = \frac{24}{6}[/tex]
[tex]x = 4[/tex]
The length of MN is calculated as:
[tex]MN = MB + BN[/tex]
[tex]MN = x - 1 + 15[/tex]
Substitute [tex]x = 4[/tex]
[tex]MN = 4 - 1 + 15[/tex]
[tex]MN = 18[/tex]
Answer:
C. 18 units
Step-by-step explanation:
Please Help, Please Help, Please Help
Answer:
a=76 b=83
Step-by-step explanation:
for a. we divide 6688(area) by 88 to find the width bc 88*w=6688
6688/88 is 76 so a=76
Since 312 is perimeter we have to subtract 73 twice and then divide that by 2 bc 73+73+L+L=312
(312-73-73)/2=83 so b=83
im struggling id.k the answer it may be a or c in my opinion helpp
Answer:
I,m pretty sure your right to go with A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Can someone help me with this?
9514 1404 393
Answer:
2b +2c35h +15mef +egStep-by-step explanation:
The outside factor multiplies each term in parentheses.
a) 2(b+c) = 2b +2c
b) 5(7h +3m) = 5×7h +5×3m = 35h +15m
c) e(f +g) = ef +eg
Smo answer these and show work plz
Answer:
Step-by-step explanation:
1) multiply the three dimension
V = 7 x 2 x 4 = 56 cm^3
2) find the base area
base area = (9 x 3)/2 = 13,5 km^2
multiply the base area for the height
V = 13,5 x 5 = 67,5 km^3
3) find the trapezoid area
trapezoid area = [(base 1 + base 2) x h]/2 = [(4+6) x 1.7]/2 = 8.5 cm^2
mutiply the trapezoid area for the height that the priam would assume if the base will touch the ground
V = 8.5 x 4 = 34 cm^3
4) find the base area
base area = radius^2 x pi = 2^2 x pi = 12,57 yd^2
multiply the base area for the height
V= 12.57 x 6 = 75.40 yd^3
5) find the base area
base area = 9^2 x pi = 81 x pi = 254.47 ft^2
multiply the base area for the height
V = 254.47 x 5 = 1272.35 ft^3
6) multiply the three dimensions
V = 12 x 11 x 9 = 1188 yd^3
7) find the trapezoid area
trapezoid area = [(12+6) x 6.3]/2 = [20 x 6,3]/2 = 63 in^2
mutiply the trapezoid area for the height that the priam would assume if the base will touch the ground
V = 63 x 16 = 1008 in^3
8) find the base area
base area = (leg1 x leg 2)/2 = (4 x 3)/2 = 6 m^2
multiply the base area for the height
V = 6 x 9 = 54 m^3
Answer:
hope this helps you out good luck with your math
what is the error in the problem below
Answer:
27 - 6 × 4 is not 84 ( Filler because I need it to be 20 characters long)
Mikey bought 4 of the 500 raffle tickets sold to
win a new TV. What is the probability that he will
win the TV
Answer:
4/500
Step-by-step explanation:
Find the value of w.
108
40
w = [?]
Please help
The value of w is 54 degrees
How to determine the value of w?From the figure, we can see that:
The angle w intercepts the arc that has a measure of 108 degrees
This means that:
w = 0.5 * 108
Evaluate the product
w = 54
Hence, the value of w is 54
Read more about arcs at:
https://brainly.com/question/25871159
#SPJ1
Sidney is a salesperson. She sold a water heater for $410 and earned 14% commission.
How much commission did Sidney earn?
Answer:
$57.40
Step-by-step explanation:
Hope this helps!!
(a) Anne, Barry and Colin share a prize in the ratio 3:4:5.
Colin gives 1/3 of his share to a charity.
What fraction of the whole prize does Colin give to the charity
Answer: 1/12
Step-by-step explanation:
1. Add up the 3 parts making 12
3:4:5 = 3+4+5=12
2. Out of the ratio we know that Colin gets 5 parts which is 5/12
3. If we subtract 5/12 from 1/3 we should get an answer of 1/12
5/12-1/3 =1/12
HELP ASAP TIMED!!!!!!!!!!!!!!!
Step-by-step explanation:
1 ans 35/37
2 ans 0.95
3 ans 12/37
4 ans 0.32
Rewrite 5 3/7 as an improper fraction.
Answer: 38/7
Step-by-step explanation:
5 3/7
5×7+3
35+3 = 38
38/7
in which quadrant is the point (-2, -3) located
I DONT GET IT DO U?????????????????
Caitlyn ran 12 laps at the school track each lap was 3/5 of a mile how many miles did she run
Answer:
Step-by-step explanation:
You have to multiply 12 × 3/5 = 7 1/5. Hope this helps
Please help its urgent
The number of mosquitoes at the beginning of the summer was 4,000.The population of mosquitoes is expected to grow at a rate of 25% a month.How many mosquitoes will there be in 4 months.
9,006
9,765
5,433
9,766
Answer:
A. 9,006
Step-by-step explanation:
First we need to find 25% of 4,000
4,000/4 = 1000
So we know there are 1,000 mosquitoes a month.
So In 4 months it would be 4,000 more mosquitoes.
That would be 8,000 but i don't see that so I would say A.
Let me know if I'm correct.
Can you please tell me the table of 12?
Answer:
you have the table of the 12in the photo
Step-by-step explanation:
Answer:
12×1=12
12×2=24
12×3=36
12×4=48
12×5=60
12×6=72
12×7=84
12×8=96
12×9=108
12×10=120
In your question
the table of 12 is correct
hope it is helpful to you ☺️☺️☺️☺️☺️
The circumference of a circle is 22 cm.
What is the area of 1o of the circular region?
(Use = 2)
O 2.2 cm2
O 3.5 cm2
O 3.85 cm2
0 38.5 cm2
[tex] \bf \: Circumference \: of \: a \: circle = 2\pi \: r[/tex]
[tex] \implies22 = 2 \times \dfrac{22}{7} r[/tex]
[tex] \implies22 = \dfrac{44}{7} \times r[/tex]
[tex] \implies \: r = \dfrac{22 \times 7}{44} [/tex]
[tex] \implies \boxed{ r = \dfrac{7}{2} }[/tex]
Now,
[tex] \bf \: Area \: of \: circle = \pi {r}^{2} [/tex]
[tex] \rightarrow \: \frac{22}{7} \times ({ \frac{7}{2}) }^{2} [/tex]
[tex] \rightarrow \frac{22}{ \cancel7} \times \frac{ \cancel{49}}{4} [/tex]
[tex] \rightarrow \: 22 \times \frac{7}{4} [/tex]
[tex] \rightarrow \: 11 \times \frac{7}{2} [/tex]
[tex] \rightarrow \frac{77}{2} [/tex]
[tex] \rightarrow \: 38.5 \: cm {}^{2} [/tex]
Area of rectangle = 38.5 cm².
Someone please answer #10,11,13 and 14 .. proportionss
Answer:
in pic
Step-by-step explanation:
PLEASE MARK BRAINLIEST
graph f(x)=x^2nand g(x)
Answer:
can sombody help awnser my problem
it's due in 10 minutes
The net of a rectangular pyramid and its dimensions are shown in the diagram. What is the total surface area of the rectangular prism in square inches?
Answer:
A 37
Step-by-step explanation:
MARK me branlies please
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
a.
Step-by-step explanation:
please click the heart and rate excellent and pa brainleist po please ☻❤☺️☺️❤☻
List another value that would make this inequality true.
9n ≥ 117
(How did you solve this)
Answer:
n ≥ 13
≥
13
Step-by-step explanation:
There are 5.4 pounds of raisins in the bag. If Mom used 0.45 of a pound in each batch of cookies, how many batches can she make?
Answer:
12
Step-by-step explanation:
The area of the triangle below is 25/12 square centimeters. What is the length of the
base? Express your answer as a fraction in simplest form.
5/3 cm is the height
Answer:
5/2 cm
Step-by-step explanation:
Given that:
Area of triangle = 25/12 cm
Height of triangle = 5/3 cm
Let,
Length of the base = b
Recall :
Area of a triangle = 1/2 * base * height
Substitute the values above into the equation :
25 /12 = 1/2 * b * 5/3
25 /12 = 5b/ 6
Using cross multiplication
25 * 6 = 12 * 5b
150 = 60b
Divide both sides by 60 to isolate b
150/60 = 60b / 60
b = 5/2 cm