Answer:
a = - 4, b = 5
Step-by-step explanation:
Expand the left side, then compare the coefficients of like terms.
- 3(2x² + ax + b)
= - 6x² - 3ax - 3b, compare to - 6x² + 12x - 15
Compare coefficients of x- terms
- 3a = 12 ( divide both sides by - 3 )
a = - 4
Compare constant terms
- 3b = - 15 ( divide both sides by - 3 )
b = 5
SOMEONE HELP ME PLS W/ BOTH QUESTIONS. WILL MARK U BRAINLIEST
What binomial would you multiply by itself to get a²+2a+1?
Answer:
(a+1) x (a+1) = a² + 2a +1
Step-by-step explanation:
last week a certain brand of bottled water cost $1.25 for a 16 oz bottle this week the water is on sale for $1 for a 16-oz bottle what is the percent increase in the price of this bottled water
A. 16 percent
B. 20 percent
C. 13 percent
D. 25 percent
Answer:
D
Step-by-step explanation:
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 6, 4, 8/3... Find the 7th term.
Answer:
0.527
Step-by-step explanation:
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 6, 4, 8/3... Find the 7th term
The sequence given in the above Question is a geometric sequence.
The formula for the nth term of a geometric sequence is given as:
an = a × r ^n - 1
Where
a = First term
r = Common ratio
n = nth term
From the above question, we are asked to find the 7th term
Hence:
a = 6
Common ratio = Second term/first term
= 4/6 = 2/3
n = 7
The 7th term = 6 × (2/3 )^7 - 1
= 6 × (2/3)^6
= 6 × (2/3)⁶
= 0.5267489712
Approximately to the nearest thousandths the 7th term = 0.527
Solve.... 4n- 9= 2 (5+ 2n)
Answer:
Step-by-step explanation:
Here you go mate
Use PEMDAS
Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction
Step 1
4n-9=2(5+2n) Equation/Question
Step 2
4n-9=2(5+2n) Remove parenthesis
4n-9=4n+10
Step 3
4n-9=4n+10 Subtract 4n to sides
-9=10
Step 4
-9=10 Add 9
0=19
Answer
No solutions
Hope this helps
Dan earns 332 over the course of a five day week how much is that per day
Answer:
$66.40 a day
Step-by-step explanation:
divide 332 by 5
Answer:
2324
Step-by-step explanation:
Times 332 by 7
URGENT. Science+Algebra (MULTIPLE CHOICE)
Answer:
A and c I hope I helped :P
Step-by-step explanation:
Is this correct?????
Answer:
Yes
Step-by-step explanation:
For you to make money, you have to babysit for a few hours.
Which function is linear?
Why?
x
Ecuación 1: y = 2
Ecuación 2: y = 2x - 5
Answer:
y = 2x - 5
Step-by-step explanation:
. A linear function has the following form. y = f(x) = a + bx.
Factorise the following 12xy(9x^2-16y^2)÷4xy(3x+4y)
Mya and ERIC WORK IN A BAKERY . MYA HAS 3 TIMEA AS MUCH FLOUR AS ERIC .MYA HAS 15.81LB OF FLOUR .USE THE EQUATION 3F = 15.81 TO FIND HOW MUCH FLOUR ERIC HAS .
Answer:
5.27 lb
Step-by-step explanation:
Given that,
Mya has 3 times as much floor as Eric. Mya has 15.81 lb of floor. The relation is given by :
Let Eric has F floor.
3F = 15.81 ...(1)
We need to find how much flour Eric has.
Dividing both sides by 15.81.
F = 15.81/3
F = 5.27 lb
Hence, Eric has 5.27 lb of flour.
Please answer this question.
Answer:
the answer would be 1/60
Answer:
1/60
Step-by-step explanation:
5 feet = 5*12 = 60 inches
Scale factor of drawing
= 1/ 60
help
what is the least perfect squared number that is divisible divisible by
12
16
20
24
NOTE : the first one who answers gets branilast
If the number of bacteria in a colony doubles every 460 minutes and there is currently a population of 13,500 bacteria, what will the population be 920 minutes from now?
Answer:
After 920 mins, the population of the bacteria would be 54,000
Answer:
The population after 920 minutes would be 40,500
1. What is the degree of the polynomial?
t3 + 5t2 – 3t + 2
Answer:
degree 3
Step-by-step explanation:
The degree of a polynomial is determined by the largest exponent of the variable within the polynomial.
Given
t³ + 5t² - 3t + 2
The leading term t³ has exponent 3 , then
The polynomial is degree 3
Give me an equivalent 14/20
Please help me with this homework
A plane rises from take off and flies at an angle 11° with the horizontal runway. When it has gained 750 feet find the distance to the nearest foot the plane has flown
Answer:
[tex]D=3930.632298 \approx 3930.6miles[/tex]
Step-by-step explanation:
From the question we are told that
Angle [tex]\theta=11\textdegree[/tex]
Height of plane [tex]h =750feet[/tex]
Generally the equation for the total distance flown is mathematically given by
[tex]D=\frac{h}{sin\theta}[/tex]
[tex]D=\frac{750}{sin11}[/tex]
Therefore total distance flown is
[tex]D=3930.632298 \approx 3930.6miles[/tex]
What is the empirical formula of a compound that is 15.65% Carbon, 2.16% Hydrogen, 18.26% Nitrogen, and 63.10% Oxygen?
Answer:
[tex]\mathbf{ CH_2NO_3}[/tex]
Step-by-step explanation:
Element %by [tex](C)[/tex] [tex](H)[/tex] [tex](N)[/tex] [tex](O)[/tex]
composition 15.56 2.16 18.26 63.16
mole ratio
[tex]\dfrac{\% \ by \ mass}{atomic \ number }[/tex] [tex]\dfrac{15.56}{12}[/tex] [tex]\dfrac{2.16}{1}[/tex] [tex]\dfrac{18.26}{14}[/tex] [tex]\dfrac{63.16}{16}[/tex]
[tex]= 1.297[/tex] [tex]2.16[/tex] [tex]1.304[/tex] [tex]3.948[/tex]
Divide by the
smallest value [tex]= \dfrac{1.297}{1.297}[/tex] [tex]= \dfrac{2.16 } {1.297}[/tex] [tex]= \dfrac{1.304} {1.297}[/tex] [tex]= \dfrac{3.948} {1.297}[/tex]
ratio [tex]1[/tex] : [tex]2[/tex] : 1 : 3
The empirical formula is = [tex]\mathbf{ CH_2NO_3}[/tex]
James works in a sporting goods store and earns $324 a week and 5% of his sales. One week James earned $432. What were his sales that week?
Answer:
His sales that week were $2,160.
Step-by-step explanation:
First, you have to subtract $324 from the amount he earned that week, to find the 5% he got from sales:
$432-$324=$108
Now, you know that he received $108 that represent 5% of his sales and you can use a rule of three to find the amount that represents 100% which would be his sales that week:
5% → 108
100% → x
x=(100*108)/5=2160
According to this, the answer is that his sales that week were $2,160.
4 packages of blueberries cost $9. How many packages of blueberries can you buy for $63?
Answer:
28
Step-by-step explanation:
Answer:
9 divided by 3= 6. You can buy 6 packages of blueberries for $9 dollars.
Step-by-step explanation:
Please help legitimate answers only or reported. BRAINLIEST
Answer:
9. a. 6
9. b. 2; 1
9. c. 3.14; 1.57
9. d. 7.57
10. 3106.86
Step-by-step explanation:
9. a. The rectangle has a length of 3 and a width of 2, so that means its area has to be 6.
9. b. The semi-circle's diameter is 2, because it is the same width as the rectangle, and finding the radius, means that you need to cut the diameter in half, so the radius of the circle is 1.
9. c. To find the full circle, we must use the formula (pi)(r)^2. So we have 3.14(1), which is just equal to pi. but since we need half the circle, we must divide the number by 2, to get the answer 1.57...
9. d. Finally we need to add up all the values together, from a. we know that the rectangle has an area of 6, and from b and c, we know the semi-circle has an area of 1.57, so we add those two numbers together we get 7.57.
10. We can do the exact same thing as number nine, which means the rectangle is 30*70=2100, The radius of the circle is 15 (30/2), the area of the circle (and since there are 2 semi circles, we don't need to divide by 2) we get 706.86, now all thats left is to add the numbers together to get the number 2806.86.
Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2+1 inches. She plans to make a similar pillow, including the ribbon, whose side length is 4x−7 inches. What expression can be used for the length of ribbon that she needs for both pillows, and what is the length if x = 3.5?
2x2+4x−6; 22.0 inches
2x2+4x−6; 32.5 inches
4(2x2+4x−6;) 88.0 inches
4(2x2+4x−6;) 130.0 inches
Answer:
4(2x2+4x−6;) 130.0 inches
Step-by-step explanation:
The expression that can be used for the total length of ribbon she needs for both square pillows and the length if x = 3.5 is:
D. 4(2x² + 4x - 6); 130.0 inches.
What is the Perimeter of a Square?Perimeter of a square = 4(s).
s = side length of the square.
Perimeter of the first pillow = 4(s) = 4(2x² + 1) inches.
Perimeter of the similar pillow = 4(s) = 4(4x - 7) inches.
Expression for the total length of ribbon she will need for both square pillows is:
4(2x² + 1) + 4(4x - 7)
4(2x² + 1 + 4x - 7)
4(2x² + 4x - 6)
If x = 3.5, plug in the value of x into 4(2x² + 4x - 6) to find the total length of the ribbon she needs:
4(2(3.5)² + 4(3.5) - 6)
4(24.5 + 14 - 6)
130.0 inches.
Thus, the expression that can be used for the total length of ribbon she needs for both square pillows and the length if x = 3.5 is:
D. 4(2x² + 4x - 6); 130.0 inches.
Learn more about perimeter of square on:
https://brainly.com/question/25092270
5. Colleen sold 14 belts for $210. What was her rate per belt?
pls answer
Answer: each belt is $15
Step-by-step explanation:
A drummer and a guitarist each wrote songs for their band. The guitarist wrote 5 fewer than three times the number of songs that the drummer wrote. They wrote a total of 35 songs. Which system of equations models this situation if the drummer wrote d songs and the guitarist wrote g songs? *
Answer:
Guitarist wtote 25 songs
Drummer wrote 10 songs
Step-by-step explanation:
G: number of guitarist songs
D: number of Drummer songs
We have:
G=3D - 5 (The guitarist wrote 5 fewer than three times the number of songs that the drummer wrote)
G+D=35 (They wrote a total of 35 songs)
That is the meaning of each equation.
Now we have to solve these system of equations:
G=3D-5
G+D=35
Using the substitution method:
(3D-5)+D=35
4D=35+5
4D+40
D=10
Thus: G=35-10
G=25
2 points
In the morning, the temperature in Westfield City was -2°F. By afternoon,
a north wind caused the temperature to drop another 8°F. What was the
afternoon temperature in Westfield City? To solve the problem, Martin
subtracted -2-(-8) and came up with an answer of 6°F. Is Martin correct?
Why or why not?
The afternoon temperature in Westfield City is -10°F.
Martin is not correct.
Calculating TemperatureFrom the question, we are to determine the afternoon temperature in Westfield City
From the given information,
"In the morning, the temperature in Westfield City was -2°F"
and
"By afternoon, a north wind caused the temperature to drop another 8°F"
Thus,
The afternoon temperature = -2°F - 8°F
The afternoon temperature = -10°F
Hence, the afternoon temperature in Westfield City is -10°F.
Martin is not correct.
Learn more on Calculating temperature here: https://brainly.com/question/24746268
#SPJ1
Write 7/40 as a percent.
Answer:
17.5%
Convert fraction (ratio) 7 / 40 Answer: 17.5%
Step-by-step explanation:
Brainliest?
Read and analyze the problem below. Was the problem solved correctly? If
not, explain the error and answer it correctly in the box below.
Solve:
2x - 8+ 3x + 2 = 4x+10+ 3x - 6
Student Work:
2x - 8+ 3x + 2 = 4x+10+ 3x - 6
5x - 6 = 7x +16
- 5x -5x
-6 = 2x +16
-16 -16
-22 = 2x
2 2
-11= x
Answer:
no(double check my math!!)
Step-by-step explanation:
on the second step it should be 4 not 16 bc 10-6=4
2x-8+3x+2=4x+10+3x-6
5x-6=7x+4
-6=2x+4
-10=2x
-5=x
Help me with this pls
Answer:
A. 3x+80+2x=180
Step-by-step explanation:
a straight line is 180 degrees
What is the total number
Answer:
What is the total number
Step-by-step explanation:
