Answer:
1
Step-by-step explanation:
The leading coeffecient is the number behind the x^2 value. There is an imaginary one there.
I need help with these questions
1) The length of a rectangular room is five less than double the width, w, of the room. Write an expression to represent the area of the room.
2) A parking area is 8 meters by 10 meters. How much will each side have to increase the area by 88 square meters?
Answer: first problem: 2w-5w
Second problem: one side increases by 4 and another side decreases by -22.
Step-by-step
For the first question: make a rectangle and label the length 2w-5 and the width 5. Next, write w(2w-5). Draw a arrow from w to 2 and another arrow from w to 5. Lastly write 2w^2-5w. Answer: 2w^2-5w
2nd question: make a rectangle. For the length write 10 and for the width write 8 and inside the rectangle write 80. Then draw a arrow and on top of the arrow write +88 and then drew another rectangle and for the length write x+10 and for the width write x+8 and inside the rectangle write 168. Then write this on the bottom of the rectangles;
(x+10) (x+8) =168
X^2+8x+10x+80=168
-168. -168
X^2+18x-88=0
Then make a T-chart and on one of the top column write (x-4) and on the other top column write (x+22)=0
And on the bottom of (x-4) write X=4 and in parenthesis write (increase)
And on the bottom of (x+22)=0 write X=-22 and in parenthesis write (decrease)
Then on the area so of the T-chart write 88 and underline it and write -4+22=18 D. S large +.
-Tell me if you get what I am saying. And good luck!
find the area of each sector. Use the 3.14 as the value of pi. Round your answer to the nearest tenth. Label unit. part 3
Answer: 8.4 m²
Step-by-step explanation:
[tex]\text{The Area of a sector}=\pi r^2\bigg(\dfrac{\theta}{360^o}\bigg)\\\\\\=\pi(4)^2\bigg(\dfrac{60^o}{360^o}\bigg)\\\\\\=\dfrac{16\pi}{6}\\\\\\= \dfrac{8}{3}\pi\\\\\\= \large\boxed{8.4}[/tex]
Mike withdrew $60 from his bank account three times what is the change in Mike's account balance after or three withdrawals
Answer:
-$180
After 3 withdrawals of $60:
-60 × 3 --- 60 less dollars every one of 3 withdrawals
-180 --- simplify
-$180
hope this helps and brainliest?
What’s the common denominator of 23/25 and 9/10
Answer:
50
Step-by-step explanation:
You find the common denominator by the LCM , which in this case is 50.
incase you did not understand LCM , am here to help.
Slove for x 2x+-3=-23
Answer:
x = -10
Step-by-step explanation:
First you have to isolate x
then you have to add 3 on the other side.
so yeahh!!
I don’t understand I’m struggling with it
Answer:
(B)
Step-by-step explanation:
If you count, there'd be 16 blue chairs.
Therefore, B
Answer:
The answer is b
Step-by-step explanation:
When there is only 2 squares it wil be 2(4) (for 2 squares) and then 2(2) for the single square lw
So adding in another square will make it 2(6)+2(2)
=16 chairs
-32=-7x-8y slope intercept form
Answer:
y = [tex]-\frac{7}{8}[/tex]x + 4
Step-by-step explanation:
-32 = -7x - 8y
Slope-intercept: y=mx+b
First, we can add 8y on both sides so we can get u by itself.
8y - 32 = -7x
Now, we can add 32 to both sides.
8y = -7x + 32
Now, we divide 8 on both sides of the equation so we can get y by itself just like in the slope-intercept formula.
y = [tex]\frac{-7}{8}[/tex]x + [tex]\frac{32}{8}[/tex]
Lastly, we can simplify and you will have your answer.
y = [tex]-\frac{7}{8}[/tex]x + 4
HELP PLEASE thank you due todayyy
Answer:
18.85 feet
Step-by-step explanation:
C = 2 x 3.14 x 6/2
Answer:
C≈18.84
Step-by-step explanation:
Formula is 2πr
D = 6 ft
Radius is D/2 = 3
2π3 = 18.84955592153875943077586029967701730518301639625063492584
Is there an outlier in this data set: 26, 30, 22, 15, 51, 21, 24, 28, 32, 24, 25, 18, 35? *
Yes
No
Answer:
Yes, 51 is an outlier.
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
Help me plzzzzzzz!!!!
Answer:
x =5
y = 35
Step-by-step explanation:
y = 7x
y = 3x+20
Since they both equal y, we can set them equal to each other
7x = 3x+20
Subtract 3x from each side
7x-3x = 3x+20-3x
4x= 20
Divide each side by 4
4x/4 =20/4
x = 5
Now find y
y = 7x
y = 7(5)
y = 35
A study in which neither the subjects nor the experimenters know which
subjects have received a placebo is called a ______ experiment.
A. Control
B. double-blind
C. Response-variable
D. Biased
Answer:
B. double-blind
Step-by-step explanation:
Answer:
AB
Step-by-step explanation:
below are the distances from jamar house to each of the the four restaurant in his town in kilometer 0.4,0.2,0.4,0.6 find the absolute deviation (MAD) of the data set
Answer:
[tex] \bar X = \frac{0.4+0.2+0.4+0.6}{4}= 0.4[/tex]
Now we can calculate the absolute deviations from the mean for each value:
|0.4-0.4|=0
|0.2-0.4|=0.2
|0.4-0.4|=0
|0.6-0.4|=0.2
And adding these 4 values and dividing by 4we got the MAD on this case:
[tex]MAD = \frac{0+ 0.2+0 +0.2}{4}=0.1[/tex]
Step-by-step explanation:
We have the following dataset given:
0.4,0.2,0.4,0.6
In order to calculate the MAD we need to calculate the sample mean first with this formula:
[tex]\bar X = \frac{\sum_{i=1}^n X_i}{n}[/tex]
Replacing we got:
[tex] \bar X = \frac{0.4+0.2+0.4+0.6}{4}= 0.4[/tex]
Now we can calculate the absolute deviations from the mean for each value:
|0.4-0.4|=0
|0.2-0.4|=0.2
|0.4-0.4|=0
|0.6-0.4|=0.2
And adding these 4 values and dividing by 4we got the MAD on this case:
[tex]MAD = \frac{0+ 0.2+0 +0.2}{4}=0.1[/tex]
Answer:
0.1
Step-by-step explanation:
Khan Academy
All of the following expressions are equivalent except _____.
1.)x - 7
2.)7 + (- x)
3.)7 - x
4.)- x + 7
What is the measure of arc WYZ?
A)231
B)200
C)255
D)168
Answer:
The answer is A. 231
Step-by-step explanation:
I took the test on quizizz.
Evaluate 16 to the power of 1/2 x 2 to the power of -3
Give your answer as a fraction in its simplest form.
If you get it right then i will give you 5 stars 1 thank you and mark you Brainallist
Answer:
1/2
Step-by-step explanation:
We want to evaluate 16 to the power of 1/2 multiplied by 2 to the power of -3. That is:
[tex]16 ^{1/2} * 2^{-3}[/tex]
Simplifying:
=> [tex]4 * \frac{1}{2^3}[/tex]
[tex]4 * \frac{1}{8} = \frac{1}{2}[/tex]
The answer is 1/2.
2⋅10^ 4 −7 ^3 =? First person to solve gets 10 Points and will also be rewarding branliest answer (Btw already know this answer just giving points and being nice)
Answer:
19657
Step-by-step explanation:
[tex]2\cdot 10^4 - 7^3=20000-343=19657[/tex]
Hope this helps!
Will mark as brainliest if correct
Answer :10X
Step-by-step explanation:
Answer:
x = 10
12 logx= 12
12 x logx = 12
12 x log10 = 12
12 x 1 = 12
En un cajón hay 10 pares de calcetines negros y 6 pares de calcetines blancos. Si se extraen 2 pares de calcetines aleatoriamente, que probabilidad hay
Answer:
Formas de elegir cualquier 2 calcetines de 24 calcetines a 24C2
Formas de elegir 2 calcetines NEGROS de 12 calcetines NEGROS 12C2
Probabilidad de recoger 2 calcetines NEGROS (P1) 12C2 / 24C2 a 66/276
Probabilidad de recoger 2 calcetines BLANCOS (P2) 12C2 / 24C2 a 66/276
Probabilidad de elegir los 2 calcetines del mismo color: P1+P2 a 66/276 + 66/276 a 11/23.
esto le dará una pista
Step-by-step explanation:
Find the area of the trapezoid.
The trapezoid has an area of
m2.
4 m
1
16m
-
-
8 m
Answer:
The area of trapezoid is 36 [tex]m^2[/tex].
Step-by-step explanation:
To find the area of a trapezoid, you need this formula:
[tex]A = \frac{(a+b)}{2} \times h[/tex]
[tex]a =[/tex] long base
[tex]b =[/tex]short base
[tex]h =[/tex] altitude (height)
-Use the following measures of trapezoid for the formula:
[tex]A = \frac{(8+4)}{2} \times 6[/tex]
-Then, you solve the formula:
[tex]A = \frac{(8+4)}{2} \times 6[/tex]
[tex]A = \frac{12}{2} \times 6[/tex]
[tex]A = 6 \times 6[/tex]
[tex]A = 36[/tex]
So, therefore, the area of a trapezoid is 36 [tex]m^2[/tex].
Answer:
first one right
Step-by-step explanation:
Given f(x)=x^2, after performing the following transformations: shift upward 74 units and shift 39 units to the right, the new function g(x)=
Answer:
g(x) = (x -39)^2 +74
Step-by-step explanation:
Given f(x)=x^2, after performing the following transformations: shift upward 74 units and shift 39 units to the right, the new function g(x) = (x -39)^2 +74
What is a transformation?
In mathematics, a transformation is a feature f, typically with a few geometrical underpinnings, that maps a fixed X to itself, i.e. f: X → X.
What are the 4 transformations in maths?
Translation, rotation, reflectiondilation.
Learn more about transformations here https://brainly.com/question/4289712
#SPJ2
Alculate the amount of heat transferred when 710 grams of water warms from an initial temperature of 4.0 ºC to a final temperature of 25.0 ºC. The specific heat capacity of liquid water is 4.184 J/g ºC. Please express you answer as a number in units of kJ, and be careful about the sign (is the answer a positive or negative number?) since that shows the direction of heat flow.
Answer:
The Quantity of heat require is [tex]0.062kJ[/tex]
Step-by-step explanation:
This problem bothers on the topic of heat capacity.
Given data
mass of water m= [tex]710 grams[/tex]
converting from grams to kg we have =[tex]\frac{710}{1000} = 0.71kg[/tex]
initial temperature T1= 4°C
final temperature T2= 25°C
heat capacity of water = [tex]4.184 J/g[/tex]
The expression for the quantity of heat required is given has
[tex]Q= mc(T2-T1)[/tex]
substituting our given data we have
[tex]Q= 0.71*4.184*(25-4)\\Q= 2.97*(21)\\Q= 62.38J\\[/tex]
In kilograms we have to divide by [tex]1000[/tex]
[tex]Q= \frac{62.38}{1000} = 0.062kJ[/tex]
5a squared - 6ab
i need help
Answer:
a (5a - 6b)
Step-by-step explanation:
Factor a
5a^2 - 6ab
a (5a - 6b)
A punch recipe calls for a lemonade to soda ratio of
3:5. If there are 120 gallons of punch, how many
gallons of lemonade were used?
Answer:
45 gallons
Step-by-step explanation:
You have to do 3x (lemonade)+5x (soda)=120
8x=120
x=15
now multiply the 15 with the 3 which will get you to 45
i really hope this helped!!
Can you please help with these algebra problems, having a mind blank right now.
Answer:
1. x= -1/2
3. a= 11
5.y= -14
7.x= 8
9.n=4
At local florists shop, yellow roses cost $2 and red roses cost $3. Steven wants to spend no more than $25 on a bouquet that includes both yellow and red roses. Let "x" represent the number of yellow roses and let "y" represent the number of red roses.
Answer:
2x + 3y ≤ 25
Completed question;
At local florists shop, yellow roses cost $2 and red roses cost $3. Steven wants to spend no more than $25 on a bouquet that includes both yellow and red roses. Let "x" represent the number of yellow roses and let "y" represent the number of red roses.
Represent the case with an equation.
Step-by-step explanation:
Given;
Cost of yellow roses = $2
Cost of red roses = $3
Maximum cost he can spend = $25
Let "x" represent the number of yellow roses
let "y" represent the number of red roses.
The total cost of yellow roses = 2 × x = 2x
The total cost of red roses = 3×y = 3y
Total = 2x + 3y
The equation for this case can be written as;
2x + 3y ≤ 25
Complete the ratio 8:40 = 1 : ?
Answer:
1:5
Step-by-step explanation:
Help! I don’t understand this and I need help! “What is the length of the missing side?” Also D was cut off but it says 90
Answer:
The missing side = 30 cm
Step-by-step explanation:
Pythagorean Theorem
a^2 + b^2 = c^2
40^2 + b^2 = 50^2
1600 + b^2 = 2500
-1600 -1600
b^2=900
square root of both sides
b=30 cm
In ΔABC, the measure of ∠C=90°, the measure of ∠A=47°, and BC = 3.5 feet. Find the length of AB to the nearest tenth of a foot.
Answer:
AB = 4.9 ft
Step-by-step explanation:
Here, we are to calculate the length of AB.
Firstly, please check the diagram of the triangle we have in the attachment.
From there we can see that what we are asked to calculate is the length of the hypotenuse(AB) while what we have is the length of the opposite and the angle.
Mathematically, when we have the opposite and the hypotenuse, the trigonometric ratio that links both is the sine
sine = opposite/hypotenuse
Sin 47 = 3.5/hypotenuse
hypotenuse = 3.5/sin 47
hypotenuse = 4.7856
To the nearest tenth of a foot AB = 4.8 ft
Please Hurry! What is the solution to log2_(9x)-log2_3=3?
Answer:
[tex] log_{2}(9x) - log_{2}(3) = 3 \\ 3 = log_{2}(8) or log_{2}( {2}^{3} ) \\ log_{2}( \frac{9x}{3} ) = log_{2}(8) \\ \frac{9x}{3} = 8 \\ 9x = 8 \times 3 \\ 9x = 24 \\ x = \frac{24}{9} \\ x = \frac{8}{3} \\ x = 2 \times \frac{2}{3} [/tex]
Answer:
[tex]\log _2\left(9x\right)-\log _2\left(3\right)=3 : x = \frac{8}{3}[/tex]
Decimal:
[tex]x = 2.66666...[/tex]
Step-by-step explanation:
[tex]\log _2\left(9x\right)-\log _2\left(3\right)=3[/tex]
Add [tex]log _2\left(3)[/tex] to both sides:
[tex]\log _2\left(9x\right)-\log _2\left(3\right)+\log _2\left(3\right)=3+\log _2\left(3\right)[/tex]
Simplify:
[tex]\log _2\left(9x\right)=3+\log _2\left(3\right)[/tex]
Use the logarithmic definition: If [tex]\log _a\left(b\right)=c\:\mathrm{then}\:b=a^c[/tex]
[tex]\log _2\left(9x\right)=3+\log _2\left(3\right)\quad \Rightarrow \quad \:9x=2^{3+\log _2\left(3\right)}[/tex]
[tex]9x=2^{3+\log _2\left(3\right)}[/tex]
Expand [tex]2^{3+\log _2\left(3\right)} : 24[/tex]
[tex]9x=24[/tex]
Solve: [tex]9x=24 : x = \frac{8}{3}[/tex]
[tex]x = \frac{8}{3}[/tex]
Verify solutions: [tex]x = \frac{8}{3}[/tex] : True
The solution is:
[tex]x=\frac{8}{3}[/tex]
Hope I helped. If so, may I get brainliest and a thanks?
Thank you, have a good day! =)
How many ways can you rearrange the letters in the word E-N-E-R-G-E-T-I-C?
Answer:60,480
Step-by-step explanation:
Given
Word ENERGETIC contains
[tex]3-E's[/tex]
[tex]1-N[/tex]
[tex]1-R[/tex]
[tex]1-G[/tex]
[tex]1-T[/tex]
[tex]1-I[/tex]
[tex]1-C[/tex]
i.e. there are 9 letters
So, no of ways of arranging 9 letters out of which 3 are same is given by
[tex]=\dfrac{9!}{3!}=60,480[/tex]
here 3! is for 3-E's