Answers
Answer:
Step-by-step explanation:
31) Multiply the entire equation by the LCM of 5 & 4 which is 20
[tex]20*\dfrac{2x^{2}}{5}+20*\dfrac{5x}{4}=10*20\\\\4*2x^{2}+5*5x = 200\\\\8x^{2}+25x - 200 = 0[/tex]
B
32) D
By trial & error method 17 * 15 = 255
33) x = 2
y = 4x² + 1
= 4*2² + 1 = 4*4 + 1
= 16 + 1
y = 17
B
34) D) all real numbers
35) Domain = all real numbers,
x = -2 ; y = -(-2+2)² - 7 = 0 - 7 = - 7
x = 0 ; y = -(0+2)² - 7 = -4 - 7 = -11
x = 4; y = -(4+2)² - 7 = - 6² -7 = -16 - 7 = - 23
C) y ≤ -7
36) t = 1 second
y = 160t - 40t² = 160*1 - 40*1² = 160 - 40
y = 120 m
C
37) Let the number be 'x'
x² + x = 165
x² + 4x - 165 = 0
Sum = 4
Product = -165
Factors = 15 , -11 {15*(-11) = -165 & 15+ (-11) = 4}
x² + 15x - 11x - 165 = 0
x(x + 15) - 11(x + 15)=0
(x + 15)(x - 11) = 0
x + 15 = 0 ; x - 11 = 0
x = -15 ; x = 11
C
38) y = 3(x + 1)² - 2
Plugin x = -1 ; y = 3(-1 +1)² - 2 = 0 - 2
y = -2
(-1 , -2)
D
39) y = 3(x - 9)² + 3
Plugin x = 9 ; y = 3(9-9) + 3 = 0 + 3 = 3
B
Related Questions
1. In this Vacation time, go through your neigh blurs and take a survey (not less than 20 peoples) about their favourite festival either Dashain ox Tihar and do the following
Sloution:
The total people's are DUT = 25
Number of peoples who bked Dashain no(D) = 10 Number of peoples who liked & Tihar no(t) = 9
1. how many like Dashain and tihar both=?
Answers
Answer:
1
Step-by-step explanation:
dgshdbahdbdbsbdbdbdbdbebdbdhdhd
Ralph painted 1/6 of a wall in 2/3 hour. At this rate how many hours will it take Ralph to paint the whole wall?
Answers
Answer:
4 hours
Step-by-step explanation:
1/6 is one segment
6 segments make a whole
6/6 = 1
2/3 is equal to one segment
2/3 * 6 = 4
Answer:
It will take 4 hours.
Step-by-step explanation:
Let the size of whole wall be x.
Given that
Ralph painted 1/6 of a wall in 2/3 hours
thus, writing it in mathematical form we have,
time taken to pain 1/6 of x = 2/3 hours
=time taken to pain x/6 wall = 2/3 hours
since, we have taken size as x so to find time to pain x size of wall ,
we divide both side by 6
=time taken to pain x/6 * 6 wall = 2/3 *6 hours
= time taken to paint x wall = 4 hours
find the intersection of the two lines by solving the system of equations please help I will give brainliest
Answers
Answer:
(-3, -5)
Step-by-step explanation:
We can add the two equations together so the x's cancel out:
x + y = -8
-x + y = -2
2y = -10
y = -5
We can substitute y in to get x:
x - 5 = -8
x = -3
This means the intersection is (-3, -5).
Akram is p years old. Shazwan is
7 years older than Akram. Their
total age is 31 years. Write a linear equation to represent their
total age.
Answers
answer
Ang sagot po 38 diyan
2 root 5 x 5 root 5 simplified
Answers
Answer:
the answer is 10√5
Step-by-step explanation:
by simplifying
The value of 2√5 x 5√5 is 50.
What is Radical?The √ symbol that is used to denote square root or nth roots. Radical Expression - A radical expression is an expression containing a square root.
An expression that uses a root, such as a square root, cube root is known as a radical notation.
Given:
2√5 x 5√5
So, Multiplying the roots
= 2√5 x 5√5
= ( 2x 5) ( √5 x √5)
= 10 x 5
= 50
hence, the multiplication of Radical gives 50.
Learn more about radical here:
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Solve the formula S=4(pi)r^2 for r.
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The given formula is :
[tex]s = 4 \pi {r}^{2} [/tex]let's solve for r
[tex]r {}^{2} = \dfrac{s}{4\pi} [/tex][tex]r = \sqrt{ \dfrac{s}{4\pi} } [/tex]how do I solve this?
Answers
if i went to school at 9:14 and only have to be there for 4 hours what time do i get out
Answers
Answer:
1:14
Step-by-step explanation:
instead of starting from 9:14 you start counting from 10:14 because that where the first hour start
i can't fgire this out 28,172 ft = mi ft
Answers
Answer: 5.3356061 miles
Step-by-step explanation:
If 1 foot = 0.000189394 miles
THEN
28,172 feet = 5.3356061 miles
Explanation:
Divide by 5280 to convert from feet to miles
28,172 ft = (28,172)/(5280) = 5.3356 miles approximately
Sam had 44 books. He placed them equally into 2 boxes. Then he placed
the amount from each box equally into
2 piles. How many books were in each pile?
2 books
4 books
5 books
11 books
Answers
Answer:
11 books
Step-by-step explanation:
44 books/2 boxes= 22 books per box
22 books per box/ 2= 11 books
Answer:
11 books
Step-by-step explanation:
44 ÷ 2
22 in each boxes
again
22 ÷ 2
11 books in each pile
Evaluate using suitable identity:
h). 139² - 138²
Answers
Step-by-step explanation:
★ Solution :-[tex]\sf \longmapsto 139^2 - 138^2[/tex]
[tex]\sf \longmapsto a^2 - b^2 = (a + b)(a - b)[/tex]
Here,
a = 139b = 138[tex]\sf \longmapsto 139^2 - 138^2 = (139 + 138)(139 - 138)[/tex]
[tex]\sf \longmapsto (239 + 138)(239 - 138)[/tex]
[tex]\sf \longmapsto (377)(1)[/tex]
[tex]\sf \longmapsto 377[/tex]
Hence solved !!
Answer:
277
Step-by-step explanation:
Algebraic Identity: a²-b²=(a-b)(a+b)
Hence,
139²-138²=(139-138)(139+138)
=1×277
=277
i need to know the answer to simplify 5/6
Answers
Answer: It's already in it's simplest form.
Mario and 3 friends equally shared the burritos shown.
Problem
Read aloude How many burritos did each person get?
A
1 2
3
B
1 1
6
C
1 1
4
D
1 1
2
Answers
Answer:
c
Step-by-step explanation:
it would be c. because there are 4 friends and there and 5 burritos so each one gets 1 and the last one slips to 4 pieces.
Answer:
each one had 3 so C is the answer
hiii please help thanks
Answers
Answer:
BEC and AED
Step-by-step explanation:
Explain the following types of angles:
Acute angle
Right angle
Obtuse angle
Straight angle
Reflex angle
Complementary angles
Supplementary angles
Answers
Answer:
acute angle measure less than 90 degrees, right angle measure 90 degrees, Obtuse angle measure more than 90 degrees, straight angle equal to 180 degrees, reflex angle is an angle greater than 180° and less than 360°, complementary angle either of two angles whose sum is 90°, supplementary angle either of two angles whose sum is 180°
9(x/3+1)>6.
A.x>-5
B.x>2
C.x>5/3
D.x>-1
Answers
Answer:
D.
Step-by-step explanation:
We are given
9(x/3 + 1) >= 6
Divide 9 on both sides
x/3 + 1 >= 2/3
Subtract 1 on both sides
x/3 >= -1/3
Multiply 3 on both sides
x >= -1
A. V(t)=0.87(22,000)^t
B. V(t)=1.13(22,000)^t
C. V(t)=22,000(0.87)^t
D. V(t)=22,000(1.13)^t
Answers
Answer:
C.
Step-by-step explanation:
A and B you can already eliminate because you need to power the rate not the starting value. D is wrong because it's increasing, so if the value increased by 0.13 each year it would be right. So you're left with C
Please help! I will mark brainliest:)
Answers
A) y=1.75x+2
B) y(1)=3.75, y(2)=5.5, y(3)=7.25, y(4)=9
C) *See attached screenshot
D) Yes, it is linear since the slope doesn't change.
work out the size of angle A
Answers
11/sinC = 9/Sin38
cross multiplication
SinC = 11Sin38/9
ARCSinC (sin inverse) to find C
then angle A= 180 minus (angle C plus angle B)
HELP!!! I RLY NEED HELP WITH THIS!
Answers
Answer:
the first one is no solution
the second one is one solution
the third one is many solutions
Step-by-step explanation:
Where are the correct answers to this geometry question?
Answers
1. Property
This is an example of the transitive property of equality.2. Definition
This is the definition of a right angle.3. Property
This is an exmaple of the division propety of equality.4. Definition
This is the definition of a midpoint.5. Property
This is an example of the symmetric property of equality.Let me know if you have any questions, thanks!
reflection of -2,4 1,2 -2,1 across x axis
Answers
Answer:
2,4 -1,2 2,1
Step-by-step explanation:
P'(-2,5) is the image of P after a dilation centered at the origin with a
scale factor of 1/3. What are the coordinates of P?
Answers
Explanation:
When going from the preimage P to its image P', we multiply each coordinate by the scale factor 1/3.
To go in reverse (image to preimage), we multiply by the reciprocal of that scale factor. The reciprocal of 1/3 is 3/1 or simply 3.
Triple the coordinates of (-2, 5) to end up with (-6, 15)
We can check the answer by multiplying each coordinate of (-6, 15) by the original scale factor 1/3 and you should end up with (-2, 5) again.
The difference between twice one number and a lesser number is 32. The sum of the lesser number and twice the greater is 60. Find the numbers
Answers
Answer:
The numbers are 23 , 14
Step-by-step explanation:
Let the greater number = x
The smaller number = y
2x - y = 32 ------------(I)
2x + y = 60 ----------------(II)
Add the two equations. Thus y will be eliminated and we can find the value of x
(I) 2x - y = 32
(II) 2x + y = 60 {Now, add}
4x = 92
x = 92/4
x = 23
Plugin x = 23 in equation (II)
2*23 + y = 60
46 + y = 60
y = 60 - 46
y = 14
The numbers are 23 , 14
Estimate by rounding to the nearest hundreds : 7892 - 3425 =
Answers
Answer:
4500
Step-by-step explanation:
7892 to the nearest hundred is 7900
3425 to the nearest hundred is 3400
7900 - 3400
=4500
what is the point given in y - 2 = 6(x+5)?
Answers
Answer:
-5,2
PLS MARK BRAINLIEST
Step-by-step explanation:
The points are (x1,y1)
using the formula
y-y1 = m(x-x1)
comparing these: - y = -2 ;y = 2
-x1 =5; x1 = -5
(-5,2) the points
m =6 (slope )
Chất nào sau đây là muối dung hòa
CH
Answers
James recently hired a plumber to do some necessary work. On the final bill, James was charged a total of $593. $365 was listed for parts and the rest for labor. If the hourly rate for labor was $76, how many hours of labor was needed to complete the job?
(A) First write an equation you can use to answer this question. Use x as your variable and express any percents in decimal form in the equation.
The equation is ______
(B) Solve your equation in part (A) to find the number of labor hours needed to do the job.
Answer: The number of labor hours was _____
Answers
Answer:
A. 593 = 365 + 76x
B. 3 hours
Step-by-step explanation:
593 = 365 + 76x
228 = 76x
3 = x
The new dolphin tank at the city aquarium is in the shape of a rectangular prism. It is long by wide by deep. To make the tank livable for the dolphins, the aquarium workers treat the water using bags of salt. The amount of water a bag of salt can treat is known in cubic feet.
(a) Find the volume of water in the tank in cubic feet.
(b) To make the tank livable for the dolphins, a bag of salt must be added for each 19.4ft$ of water. The aquarium doesn't have any salt on hand and the salt can only be purchased in whole bags. How many bags of salt must be purchased to treat the water?
(c) If each bag of salt costs $4.85, how much must the aquarium pay for salt to treat all the water in the new dolphin tank?
answer quickly
Answers
The volume of water in the tank is 35,100 cubic feet.
What is the volume of the rectangular prism?Volume = length × width × height
We have the following parameters based on the information provided;
Length = 20 meters
Width = 13 meters
Height = 5 meters
Substitute the values into the formula to get
Volume = 20 × 13 × 5
Volume = 1300 cubic meters
Convert the cubic yard into cubic feet
1 cubic yard = 27 cubic foot
⇒ 1300 yards = x
⇒ x = 27 × 1300
⇒ x = 35,100 cubic feet
Therefore, the amount of water a bag of salt can treat is 35,100 cubic feet
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The question seems to be incomplete the correct question would be
The new dolphin tank at the city aquarium is in the shape of a rectangular prism. It is 20 yds long by 13 yds wide 5yds by deep. To make the tank livable for the dolphins, the aquarium workers treat the water using bags of salt. The amount of water a bag of salt can treat is known in cubic feet.
Find the volume of water in the tank in cubic feet.
Last year Jonathan was 60 3/4 inches tall. This year he is 65 1/4 inches tall. How many inches did he grow?
Answers
Answer:4 1 /2
Step-by-step explanation: