Answer:
Step-by-step explanation:
(a+b)(a-b)=a^2-b^2
determine the value of p if one root of equation x^2+px+1=0 is the square of other.
Answer:
-2
Step-by-step explanation:
Given equation is x²+px+1=0
comparing the equation with ax²+bx+c=0
then a=1,b=p,c=1
let the roots one root of the equation be A then
by question, another root is A².
we know
A(ALPHA)+A²(beta)=-b/a
A+A²=-p/1
A+A²=-p......1
again
A*A²=c/a
A³=1/1
A³=1
A=1
Now,
substituting A=1 in equation 1
1+1²=-p
2=-p
Therefore p=-2.
Divide: 4/0 is it 0, undefined, 1, 4 or none of the above?
Answer: Undefined
Step-by-step explanation:
4/0 is undefined. This is because any number divided by zero is undifined.
Question 4
A
B
C
D
PLEASE HELP!!!
Answer:
B
Step-by-step explanation:
The fastest time for completing an obstacle course is 218 seconds. Artest completed the first half of the course in 95 seconds. It took him 124 seconds to finish the second half. a. What is Artest's total time? b. How does his time compare to the fastest time?
Answer:
219 Seconds ; He was 1 second faster
Step-by-step explanation:
Two halfs equal one whole, meaning both of the times added will equal the full time he took:
95+124=219
219 Seconds
He was 1 second faster because:
219-218=1
Can you please help me for 2 questions
First question is...
Which of the inequalities or equations below are true?
a) |-15| < -10
b) |-15| < 10
c) |-15| = -15
c) |-15| > 10
d) none of the above
2nd question is...
Complete the equation: |10| =__
a) -10
b) 10
c) 1/10
d) none of the above
Answer:
see explanation
Step-by-step explanation:
1. c
2.b
the difference of a number s and 6
Answer: s-6
Step-by-step explanation:difference means subtract so that why there subtract sign. And you are trying to find the difference of s and 6 so you write s -6.
Hope it help and please give Brainliest if it did thanks ;)
PLEASE HELP
This table models a linear function.
x -8 -4 4 8
y -1 0 2 3
Enter the coordinates of the y-intercept in the boxes.
Answer:
[tex](x,y) = (0,1)[/tex]
Step-by-step explanation:
Given
The above table
Required
Determine the coordinates of the y intercept
Represent points on the table as:
[tex](x_1,y_1) = (4,2)[/tex]
[tex](x_2,y_2) = (8,3)[/tex]
First, calculate slope (m):
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{3-2}{8 - 4}[/tex]
[tex]m = \frac{1}{4}[/tex]
For y intercept, the following coordinate point exist:
[tex](x_3,y_3) = (0,y)[/tex]
Because x = 0 at y intercept
Calculate the slope as:
[tex]m = \frac{y_3 - y_1}{x_3 - x_1}[/tex]
The equation becomes
[tex]\frac{1}{4} = \frac{y - 2}{0 - 4}[/tex]
[tex]\frac{1}{4} = \frac{y - 2}{- 4}[/tex]
Cross Multiply:
[tex]4(y-2) = -4 * 1[/tex]
Divide through by 4
[tex]y - 2 = -1 * 1[/tex]
[tex]y - 2 = -1[/tex]
Make y the subject:
[tex]y = 2-1[/tex]
[tex]y = 1[/tex]
Hence, the coordinates of the y intercept is:
[tex](x,y) = (0,1)[/tex]
A new health drink has 170% of the recommended daily allowance (RDA) for a certain vitamin. The RDA for this vitamin is 20 mg. How many milligrams of the vitamin are in the drink?
Answer:
34
Step-by-step explanation:
the height of a shed is 6cm. a ladder leans agaisnt the shed with its base 4.5 m away, and its top just reaching the roof. what is the length of the ladder?
Answer:
4.5m
Step-by-step explanation:
The set up is a right angles triangle
Height of the shed = opposite side = 6cm
Distance of the ladder from the shed = adjacent = 4.5m
Lenght of the ladder = Hypotenuse = x
Using pythegoras theorem to find the length of the ladder
hyp² = opp²+adj²
hyp² = 0.06² + 4.5²
hyp²= 0.0036+20.25
hyp² = 20.2536
hyp = √20.2536
hyp = 4.50m
Hence the length of the ladder is 4.5m
Can some PLEASE HELP ME I
Answer:
B
Step-by-step explanation:
because the equation when you get it is the number you divide with
Contestants in the Run-and-Bike-a-thon
run for a specified length of time, then bike for a specified length of time. Jason ran at an average speed of 5.2 mi/h
and biked at an average speed of 20.8 mi/h,
going a total of 14.4 miles. Seth ran at an average speed of 10.4 mi/h and biked at an average speed of 18.2 mi/h,
going a total of 18 miles. For how long do contestants run and for how long do they bike? Round to the nearest hundredth if necessary.
Contestants run__hour and bike___hour.
Answer:
They ran for 0.923 hrs and biked for 0.46 hrs
Step-by-step explanation:
First thing to do is write down the inequality of the question
5.2x + 20.8y = 14.4
10.4x + 18.2y = 18
Multiplying the whole equation by 10, so as to eliminate the decimal places, we have.
52x + 208y = 144
104x + 182y = 180
Multiplying the first equation by 2, we have
104x + 416y = 288, next we solve it simultaneously with the second equation
104x + 416y = 288
104x + 182y = 180
Subtract 2 from 1, and we have..
416y - 182y = 288 - 180
234y = 108
y = 0.46
Now, we go back and substitute for y in the earlier equation, so that
52x + 208(0.46) = 144
52x + 95.68 = 144
52x = 144 - 95.68
52x = 48.32
x = 48.32/52
x = 0.929
1. Identify the domain of the graphed function
Ms. Ledford wanted to cover the classroom with new carpet. If the length of the
classroom was 12 feet and the width was 8 feet. How much carpet would she need
to buy?
Answer:
96 ft^2
Step-by-step explanation:
12ft × 8ft to find area of classroom
96ft so Ms. Ledford has to buy 96 square feet of carpet
Answer:
96 ft^2
Step-by-step explanation:
Area = L x W
12 x 9=96
What is the midpoint of the segment shown below?
Answer:
We conclude that the midpoint of the segment is:
[tex]\left(-\frac{9}{2},\:\frac{3}{2}\right)[/tex]Hence, option D is correct.
Step-by-step explanation:
Given the points
(-6, -1)(-3, 4)Finding the midpoint of the segment using the formula
[tex]\mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]
[tex]\left(x_1,\:y_1\right)=\left(-3,\:4\right),\:\left(x_2,\:y_2\right)=\left(-6,\:-1\right)[/tex]
so
[tex]=\left(\frac{-6-3}{2},\:\frac{-1+4}{2}\right)[/tex]
[tex]=\left(-\frac{9}{2},\:\frac{3}{2}\right)[/tex]
Therefore, we conclude that the midpoint of the segment is:
[tex]\left(-\frac{9}{2},\:\frac{3}{2}\right)[/tex]Hence, option D is correct.
Solve 3(4b – 2) = -6 + 12b
Answer:
All real numbers make his equation true.
Step-by-step explanation:
Are the triangles similar
Answer:
Yes
Step-by-step explanation:
Can I get brainliest? It will help
Find the coordinates of point B
Answer:
do u got a pic?
Step-by-step explanation:
The question is above.
Answer:
h(11) = 101
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Function NotationStep-by-step explanation:
Step 1: Define
h(t) = -20 + 11t
h(11) is t = 11
Step 2: Evaluate
Substitute: h(11) = -20 + 11(11)Multiply: h(11) = -20 + 121Add: h(11) = 101Choose all of the equivalent expressions of (a + b)(x + y).
(a + b)x + (a + b)y
a(x + y) + b(x + y)
(b + a)(y + x)
ax + by
ax + bx + ay + by
ay + bx
Answer:
(a + b)x + (a + b)y
Step-by-step explanation:
You would have to factor out the expression to find the answer.
A pack of cinnamon-scented pencils sells for $7.00. What is the sales tax rate if the total cost of the pencils is $7.35?
Answer:
35 cents
Step-by-step explanation:
PLEASE HELP
Divide.
(6.496×10^−6)÷(2.8×10^5)
Express your answer in scientific notation.
Answer:
=(6.496x10^-6)x10^-5/2.8
=6.496/2.8 x10^-6 x10^-5
= 2.32 x 10^(-6-5)
=2.32 x10^-11
=2.32/10^11
Drag each tile to the correct box.
Determine the best type of savings fund for each situation.
401(k)
rainy-day fund
sinking fund
emergency fund
money needed to start a business
paying utility bills while unemployed
unexpected plumbing expenses
retirement
Answer:
sinking fund
emergency fund
rainyday fund
401k
Step-by-step explanation:
all in order
What is 1 1/4 + 3 5/8 + 3 1/2? Show your work.
Answer:
Step-by-step explanation:
1 2/8 + 3 5/8 + 3 4/8
= 7 11/8
8 3/8
6. A thrift store in Bethesda, Maryland has a 15% off sale on pants. If the
original cost of the pants was $19. How much does Carmen save with the
discount on the pants? *
1 point
Your answer
Answer:
he saves $2.85
Step-by-step explanation:
Macy’s is having a one-day 25% off special. If Bryan bought $110 worth of items, what would the final bill total after applying the discount of 25% and a sales tax of 6.5%? **Round to the nearest penny
Answer:87.86
Step-by-step explanation:
110x75/100=82.50
82.50x106.5/100=87.86
Evaluate the expression below when x = 24 and y = 6.
4x8y
Answer:
96*48=4608
Step-by-step explanation:
4*24=96
6*8=48
am I right to think that this is multiplication
if not then use the 2 numbers and their sign whatever it may be.
B
113°
72°
А
с
D
Write a list of steps that are needed to find the measure of ZB.
Step-by-step explanation:
the exterior angle is equal to the sum of the interior angles on the opposite side.
As in angle BCD = angle BAC + angle ABC
113 = 72+angle ABC
angle ABC = 41
Answer:
180-113 to find the linear angle.
add that result with 72.
once found the sum, use 180 to subtract the sum to get angle B.
A shopkeeper purchased 100 blankets at Rs. 2000 each. He found that 10 blankets were
defective and he sold these at Rs. 1200 each. At what rate should he sell the remaining
blankets so as to gain 14% on the whole ?
Answer:
2,400.
Step-by-step explanation:
Since the shopkeeper bought 100 blankets at $ 2000 each, he spent a total of $ 200,000. He wants to make a total profit of 14% through his sale, that is, he wants to make sales for $ 228,000 (200,000 x 1.14).
Since he sold 10 defective blankets at $ 1200 each, he recovered a total of $ 12,000. Therefore, he has $ 216,000 (228,000 - 12,000) left to achieve his goal, through the sale of 90 blankets. Therefore, you must sell each blanket for $ 2,400 (216,000 / 90) to make the desired profit.
The temperature outside changed from 66°F to 42°F over a period of eight days. If the temperature changed by the same amount each day, what was the daily temperature change?
Tom's first four test scores in his math class were 75, 75, 72, and 86.
What was his mean score?
0 86
072
0 77
o 75
Answer: 77
Step-by-step explanation:
u add up all the numbers then divide by how many numbers there are