Answer:
720
Step-by-step explanation:
Out of 80 students the no. of students who sign up=48
So, out of 1200 students 48×1200÷80=720 students sign up.
If one of the roots of the equation x² - 4 + k = 0 exceeds the other by 2 , then find the roots and determine the value of k.
Answer:3
Step-by-step explanation:
Given
Quadratic equation is [tex]x^2-4+k=0[/tex]
if one root exceeds the other by two
suppose one of the roots is a, then the other is a+2
The Sum of roots is
[tex]=\dfrac{-\text{coefficient of x}}{\text{coefficient of }x^2}[/tex]
[tex]\therefore a+a+2=-\dfrac{-0}{1}\\\\\Rightarrow 2a+2=0\\\Rightarrow a=-1[/tex]
Product of roots
[tex]\Rightarrow (a)(a+2)=\dfrac{k-4}{1}\\\Rightarrow (-1)(1)=k-4\\\Rightarrow k=4-1=3[/tex]
A pack of 8 batteries cost 4.99
How much does it cost for each battery?
Give your answer to the nearest penny.
And please dont say 0.62 because its wrong.
Help me with this!!!!
a line segment has endpoints A(7,-1) and B(-3,3). what are the coordinates of the midpoint of AB?
Answer:
(2, 1)
Step-by-step explanation:
M = (x1 + x2 / 2, y1 + y2 / 2)
M = [ 7 + (-3) / 2, -1 + 3 / 2]
M = (2, 1)
CAN SOMEONE PLEASE HELP ME
Can somebody help me?
Answer:
x = -3
y = 3
Step-by-step explanation:
C = (-3,3)
Hope I helped! Have a nice day! Plz mark as brainliest!!! :D
-XxDeathshotxX
The diameter of a circle is 5 inches. Find the length of its radius. Answer: inches.
When can we not use the distributive property?
Answer:
Step-by-step explanation: We usually use the distributive property because the two terms inside the parentheses can't be added because they're not like terms;
A circular sector has a central angle of π6 radians and a radius of 9 ft.
What is the area of the sector?
Use 3.14 for pi. Round your answer to the nearest tenth.
Enter your answer in the box.
area = ft2
Answer:
[tex] \approx \: 21.2 \: {ft}^{2} [/tex]
Step-by-step explanation:
[tex]central \: \angle = \frac{\pi ^{c} }{6} = 30 \degree \\ \\ area \: of \: the \: sector = \frac{30 \degree}{360 \degree} \times \pi {(9)}^{2} \\ \\ = \frac{1}{12} \times 3.14 \times 81 \\ \\ = \frac{1}{12} \times 254.34 \\ \\ = 21.195 \: {ft}^{2} \\ \\ \approx \: 21.2 \: {ft}^{2} [/tex]
Answer:
given
π6radian=30°
radius r =9ft
the area of the sector=30°/360×π×r²
=30/360×22/7×9²=21.214ft²
Find the LARGEST of three consecutive numbers if their sum is 105
Answer:
36
Step-by-step explanation:
devide 105 by 3 then add one 34+35+36=105
Answer:
It's 37 because the three are 33, 35, and 37. 37 is the largest of all of them.
Step-by-step explanation:
105/3 = 35, therefore the middle number is 35, and the 3 numbers are 33, 35, and 37.
1. Calculate the scale factor.
a. ⅓ b. ½ c. 2 d. 3
2. Find the value of x.
a. 3•0m b. 3•5 c. 4•5 d. 6•0
Answer:
eeeeeeeeeeeeeeeeeeeeeeeeeeeee
Step-by-step explanation:
what is the reciprocal of 16/3
A group of 12 people at a party equally shared 3 large sandwiches. What fraction of the sandwiches did each person receive?
Answer:
Each person got 1/4 of a sandwitch
Find the value of X......
Answer:
720 = x +133+138+148+95+105
x = 101
simplify 3.4n+9.6-2.1n
Answer:
1.3n + 9.6
Step-by-step explanation:
3.4n-2.1n is 1.3n and we have the left over +9.6 .
the circumference of a circle is 6.908 kilometers. what is the circles diameter?
Answer:
2.19888km
Step-by-step explanation:
C=2πr
d=2r
d=C
π=6.91
π≈2.19888km
Answer: The diameter rounded to the nearest hundredth is 2.20 kilometer, if you need to round to a different place value, the work is shown below.
Good Luck!
Step-by-step explanation:
C = πd
6.908 = πd
π π
2.198884694...kilometers = d
need help with trig. find the value of variable to the nearest tenth
Answer:
x = 10.43
Step-by-step explanation:
use tan:
⇒ tan = [tex]\frac{opposite}{adjacent}[/tex]
⇒ tan 41 = [tex]\frac{12}{x}[/tex]
tan of 41 is 0.869
⇒ 0.869 = [tex]\frac{12}{x}[/tex]
multiply each side by 12
⇒ 0.869 x 12 =[tex]\frac{12}{x}[/tex] x 12
x = 10.43
Answer:x = 10.43
Step-by-step explanation:give credit to the other person
The zebra at a zoo weighs 500 kilograms.
What is the total number of grams in 500 kilograms?
Answer:
500,000 grams
Step-by-step explanation:
1 kg = 1000 g
500 x 1000 = 500,000
Answer:
500,000 grams
Step-by-step explanation:
PLEASE HELP ASAP
All the lines in the figure intersect at point P.
What is the measure of ZKPL?
Answer:
angle KPL = 70 degree
Step-by-step explanation:
A straight line will equal 180 degrees
To find angle IPN, add angles NPM (60) and IPJ (50) and subtract the number from the straight line (180)
60 + 50 + IPN = 180
110 + IPN = 180
IPN = 70
IPN is a congruent angle to KPL
Congruent means they will equal the same
IPN = KPL
70 = 70
We can check our work by adding NPM (60) and KPL (70) and subtracting the sum from the straight line (180). Our answer should be the same as IPJ (50) as MPL is congruent to IPJ
60 + 70 + MPL = 180
130 + MPL = 180
MPL = 50
Correct
The bases of a
circular and congruent.
Answer:
Aha.........
Step-by-step explanation:
Shshdhdjdjdjdjdjdhddhgjhdjd
PLEASE HELP ME!
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Given the proportion a/b = 8/15, what ratio completes the equivalent proportion a/8=?
Answer:
a/8 = b/15
Step-by-step explanation:
a/b = 8/15 -- divide both side by 8 and multiple both side by b
a/8 = b/15
Please help me out with product rules!!
Answer:
1. 2 x 2 x 2 x 2 x 2 x 2 x 2 & 2^7
2. b x b x b x b x b x b x b x b x b x b x b x b x b x b x b & b^13
Hope that helps!
Step-by-step explanation:
Add: 85 + (-96)
help
Answer:
The awsner is -11
An account earns simple interest. Find the missing value.
Interest Earned: $45
Principal: ?
Interest rate: 3%
Time: 2 years.
Answer:
2.7
Step-by-step explanation:
SI = (P*T*R)/100
P = 45$
R = 3 percent
T = 2 years
Now,
SI = (P*T*R)/100
= (45*2*3)/100
= 2.7$
Help me please thanks
20
Step-by-step explanation:[tex]\frac{y-x}{z}[/tex]
[tex]\frac{64-4}{3}[/tex]
[tex]64-4=60[/tex]
60 ÷ 3 = 20
Mr. Alcazar bakes cookies in batches of 60 and batches of 90. If he bakes 6 batches of 60 cookies and 5 batches of 90 cookies, how many cookies
does he bake?
360 cookies
450 cookies
810 cookies
800 cookies
Answer:
810 Cookies
Step-by-step explanation:
6x60=360
5x90=450
360+450=810
Help!!!!!!!!!
I need the answer to this question the correct answer
I will mark you brainliest:)
I need it Asap!!!!
Arrange the numbers in descending order. 374430,802343,980377
Answer:
980377,802343,374430
Step-by-step explanation:
Pls follow
Can someone please help me with math.
Answer:
A
Step-by-step explanation:
Hello There!
First thing we notice is that the y intercept is at (3,0) meaning that they have some sort of fee that has a charge of 3 dollars (represented by the 3)
Because the fee is 3 dollars we can immediately eliminate answers B and C
Now we want to find the charge for each bag of Potpourri (this can be represented by the slope)
Once again we want to choose two points on the line and plug it in into the slope formula
the points are optional but i have chosen the points (1,4.5) and (2,6)
*plug it into the slope formula*
[tex]slope=\frac{6-4.5}{2-1} \\6-4.5=1.5\\2-1=1\\slope =\frac{1.5}{1} or1.5[/tex]
so we can conclude that the charge per bag of potpourri is $1.50 leading us to answer choice A
2/5g = 3/5 give me a good explanation that is easy to understand