Answer: x > 3
Step-by-step explanation:
In order to find x, we must isolate it first.
Add one to both sides. It's now 4x < 12.
Now we divide both sides by 4, remember that every time we divide or multiply we must flip the inequality symbol.
The final answer is x > 3
Find the surface area of the pyramid below. You do not need to include units. 8 cm 5 cm
Answer:
A=lw+l(w
2)2+h2+w(l
2)2+h2Step-by-step explanation:
Answer:
40
Step-by-step explanation:
well I need the 3rd number but right now the answer is 40
Reflection across the line y=2
Answer:
-2,0
Step-by-step explanation:
2 is the line of reflection so, you count to it 4-2 is 2, so you go under the line of reflection 2 times which would get you to -2,0 I would've had a more confident answer if I seen the choices to choose from but it's good.
Re-write the quadratic function below in Standard Form
y = -9(x - 1)(x + 2)
Answer:
-9x^2 - 9x + 18
Step-by-step explanation:
-9 • (x - 1) • (x + 2)
-9x + 9 • (x + 2)
-9x^2 -18x + 9x + 18
-9x^2 - 9x + 18
Answer:
y = - 9x² - 9x + 18
Step-by-step explanation:
y = - 9(x - 1)(x + 2) ← expand factors using FOIL
= - 9(x² + x - 2) ← distribute parenthesis by - 9
y = - 9x² - 9x + 18 ← in standard form
HELP I WILL MARK BRAINLIEST
Answer:
#5 - C
#7 - A
Step-by-step explanation:
If two items are similar, it means that the angles and figure itself have not changed, just the size. The two objects are prototional to each other.
In order to find the length of one side, we have to find what the size difference is, if that makes sense. We have to figure out the number that the smaller size is multiplied by in order to get the bigger number (or the other way around).
#5:
Side LK and side DE are preportional. We can divide 35 by 10 to figure out the proportion size. 35/10=3.5. Then we can take that and use it to find the other side. MK and FD are proportional. We can now take 22 and multiply it by 3.5 to get the new side length. 22x3.5=77
#7:
Same thing. 12/8=1.5, which is the proportional size change. We can now take the already exisiting number and multiply it. 5x1.5=7.5
Mônica pagou a mensalidade da escola de seu filho com alguns dias de atraso com uma multa de 6%. Se a mensalidade era de 800 reais, o valor total pago, com acréscimo da multa foi: a)40 b)840 c)856 d)848
Answer:
d)848
Step-by-step explanation:
Em virtude do atraso, Mônica teve de pagar 100% + 6% = 106% da mensalidade do seu filho.
Coeficiente:
O coeficiente de 106% é 106%/100% = 1.06, ou seja, para encotrarmos 106% de um valor, multiplica-se este valor por 1.06.
Se a mensalidade era de 800 reais, o valor total pago, com acréscimo da multa foi:
106% de 800, então:
1.06*800 = 848.
A resposta correta é dada pela alternativa d.
ASAP! Which number is a factor of the prime factorization of 60?
Answer:
So the prime factorization of 60 is 2 × 2 × 3 × 5, which can be written as 2 2 × 3 × 5. The actual prime factors of 60 are 2, 3, and 5.
Answer:
The Prime Factorization is:
2 x 2 x 3 x 5
In Exponential Form:
2^2 x 3^1 x 5^1
A bakery uses 6 cups of flour for each batch of bread and spread another cup of flour on the counter write an algebraic expression using C to represent the cups of flour that are used.
Answer:
6c = b
Step-by-step explanation:
6 cups of flour for each batch of bread, so 6c;
b is the batch of bread.
So basically,
6c = b
algebra help pls answer
Find the equation of a line that passes through points (1, -8) and (4, 4).
a. y=4x+12
b. y=-4x-12
c. y=4x-12
d. y=-4x+12
Answer:
D igjdghhhgghgjgyigtyytttttrttuu
Answer:
C y = 4x - 12
Step-by-step explanation:
(1,-8) means x=1, y=-8
(4,4) means x=4, y=4
so, for which of the offered equations are both pairs right ?
a -8 = 4x1 + 12 = 16 wrong already for the first pair
b -8 = -4x1 - 12 = -16 wrong already for the first pair
c -8 = 4x1 - 12 = -8 hey, right !
4 = 4x4 - 12 = 16 - 12 = 4. hey, right
d -8 = -4x4 + 12 = -16 + 12 = -4. wrong already for the first pair
so, C describes an equation that covers both points. it is a linear function (no squares or so), and so it is a line function passing through both points.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
I don't want links.
I don't want links.
I don't want links.
Answer:
B
Step-by-step explanation:
According to Order of Operations, you always do exponents first
Solve the following system. y = 2x2 - 3x - 4 and y + x = 8. Enter the solution with the smaller x value first. The solutions are ( , ) and ( , )
The solutions of the nonlinear system of equations are the points (x₁, y₁) = (- 2, 10) and (x₂, y₂) = (3, 5).
How to solve a system of algebraic equationsWe find in this place a non-linear system formed by a quadratic equation and a linear equation, which can be solved by algebra properties. The complete procedure is shown below:
y = 2 · x² - 3 · x - 4 (1)
y + x = 8 (2)
By (2) in (1):
2 · x² - 3 · x - 4 + x = 8
2 · x² - 2 · x - 12 = 0
2 · (x² - x - 6) = 0
2 · (x - 3) · (x + 2) = 0
x = 3 ∨ x = - 2
y = 8 - 3 ∨ y = 8 - (- 2)
y = 5 ∨ y = 10
The solutions of the nonlinear system of equations are the points (x₁, y₁) = (- 2, 10) and (x₂, y₂) = (3, 5).
To learn more on quadratic equations: https://brainly.com/question/17177510
#SPJ1
A clothing store donated a percent of every sale to charity. The total sales were $8850, so the store donated $531 what percent of $8850 was donated to charity?
Answer:
6%
Step-by-step explanation:
[tex]\frac{531}{8850} *\frac{x}{100} \\531*100= 5310053100/8850= 6%[/tex]
(No links) HELP ME THIS IS THE LAST QUESTION
Part 1
Answer: (x+5)(x+10) - 50 = 126Other answers are possible.
-------------
Explanation:
The old width was 5, but then it increases to x+5. The old length was 10, but now it's x+10.
The area of any rectangle is length times width.
So the area of the larger rectangle is (x+5)(x+10). Subtract off the old area of 5*10 = 50 and we get (x+5)(x+10) - 50 as the area of the L shape. Set this equal to 126 to finish setting up the equation. This is one possible answer out of many others. This is because we could expand out the (x+5)(x+10) into x^2+10x+5x+50 or simplify that to x^2+15x+50, as two possible options.
==========================================================
Part 2
Answer: x = 6-------------
Explanation:
Solve the equation we set up in the previous part
(x+5)(x+10) - 50 = 126
x^2+10x+5x+50-50 = 126
x^2+15x = 126
x^2+15x-126 = 0
Apply the quadratic formula from here
[tex]x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(15)\pm\sqrt{(15)^2-4(1)(-126)}}{2(1)}\\\\x = \frac{-15\pm\sqrt{729}}{2}\\\\x = \frac{-15\pm27}{2}\\\\x = \frac{-15+27}{2} \ \text{ or } \ x = \frac{-15-27}{2}\\\\x = \frac{12}{2} \ \text{ or } \ x = \frac{-42}{2}\\\\x = 6 \ \text{ or } \ x = -21\\\\[/tex]
Another method you could use is factoring, so you could say:
x^2+15x-126 = 0
(x-6)(x+21) = 0
x-6 = 0 or x+21 = 0
x = 6 or x = -21
The issue with this is that it may take a while to do this trial and error approach.
Whichever method you used, you'll end up with two solutions. One of those solutions doesn't make sense though. We can't have a negative length or distance value, so we ignore x = -21.
The only practical solution is x = 6
If x = 6, then the old height goes from 5 to x+5 = 6+5 = 11
If x = 6, then the old length goes from 10 to x+10 = 6+10 = 16
The new larger rectangle is 11*16 = 176 sq ft, in which we subtract off the 50 sq ft to get 176-50 = 126 sq ft, and this matches with the 126 given to us. Therefore, the answer is confirmed.
Can someone please help me!
Answer:
A)
Step-by-step explanation:
it is clearly reduced so you can eliminate the middle two options as answers;
reduction is always going to be a value less than 1 because a value greater than 1 would not be a reduction
-) A floor plan shows that a tiny house has a length of 30 feet and a width of 20 feet.
1) Which expression represents the area
of the tiny house?
30. 20
30 – 20
30 : 20
30 + 20
Answer:30*20
Step-by-step explanation:
Re-write the quadratic function below in Standard Form
y = 6(x + 2)(x + 6)
Answer:
y = 6x^2 + 48x + 72.
Step-by-step explanation:
y = 6(x + 2)(x + 6)
y = 6(x^2 + 6x + 2x + 12)
y = 6(x^2 + 8x + 12)
y = 6x^2 + 48x + 72.
Answer:
see explanation
Step-by-step explanation:
6(x²+6x+2x+12)
6(x²+8x+12)
6x²+48x+72
Find the length side of W
Answer:
17.99
Step-by-step explanation:
Trig Ratios:
Sin = Opposite over Hypotenuse
Cos = Adjacent over Hypotenuse
Tan = Opposite over Tangent
We can use trig ratio sine as we are given an angle ( 40° )and the hypotenuse (28) and we need to find its opposite side (w)
Recall that sin = opposite over hypotenuse
That being said we want to create an equation to solve for w
[tex]sin(40)=\frac{w}{28}[/tex]
Now we solve for w
Step 1 multiply each side by 28
[tex]\frac{w}{28} *28=w\\sin(40)*28=28sin(20) = 17.99[/tex]
we're left with w = 17.99
A spinner has 4 blue sections, 6 red sections
and 2 green sections. It is spun 24 times.
For numbers 2a - 2c, circle YES or NO to
indicate whether you would expect the
spinner to land on the given color the
number of times stated.
2a. 8 times on blue
YES
NO
2b. 18 times on red
YES
NO
2c. 4 times on green
YES
NO
Answer:
2a.) 8 times on blue. 2b.) 18 times on red. 2c. ) 4 times on green.
Step-by-step explanation) the answer for 8 times on blue. is yes The answer for 18 times on red. Is yes. The answer for 4 times on green. Is no
Find the surface area of the composite figure.
Answer:
470
Step-by-step explanation:
there are several surface areas.
1. the 4 side walls of the big block = 4*12*7 = 336
2. top and bottom of the big block = 2* 7*7 = 98
3. subtract the small rectangular area from the top area covered by the small block = 2*7 = 14
4. the 3 (visible) side walls of the small block on top =
3* 2*7 = 42
5. the small top and bottom areas of the small block =
2* 2*2 = 8
so, 1.+2.-3.+4.+5. = 470
x<-7 on a number line
Answer:
mark -7 on the line then draw a line to the left of it
A 95 percent confidence interval for the difference between the proportion of high school seniors who play a varsity sport in the school district and high school juniors who play a varsity sport in the school district is to be calculated. What is the standard error of the difference
Answer: Hello your question is incomplete below is the complete question
In a large school district, 16 of 85 randomly selected high school seniors play a varsity sport. in the same district, 19 of 67 randomly selected high school juniors play a varsity sport. a 95 percent confidence interval for the difference between the proportion of high school seniors who play a varsity sport in the school district and high school juniors who play a varsity sport in the school district is to be calculated. What is the standard error of the difference
answer : 0.0695
Step-by-step explanation:
First step : Determine the sample proportions
For P1 = 16 / 85 = 0.188
For P2 = 19 / 67 = 0.284
Next determine the Standard error of the difference using the relation below
Standard Error = [tex]\sqrt{\frac{p1(1 - p1)}{n1} + \frac{p2(1-p2)}{n2} }[/tex] ------- ( 1 )
where : P1 = 0.188
P2 = 0.284
n1 = 85 high school seniors
n2 = 67 high school juniors
Input values into equation 1
Standard error of the difference = 0.0695
Help! What is the answer. Please, help ASAP.
Find the length of the missing side. Round to the nearest hundredth if necessary
a=6
b=3
what is c
Answer:
6.71
Step-by-step explanation:
Pythagorean theorem
a^2+b^2=c^2
6^2+3^2=c^2
36+9=c^2
45=c^2
6.71=c
Sally went to the video game store and bought 2 used video games for $22.50 each, one new game for $55, and a gaming magazine for $12.95. There was 6.5% tax on the purchase. What was the total purchase price after tax?
Answer:
$120.29
Step-by-step explanation:
first you add the normal prices of what sally bought, then add 6.5% of the price she paid.
22.5(2) + 55 + 12.95 = 112.95
6.5 x
----- = -----
100 112.95
6.5(112.95) = 100x
734.175/100 = 100x/100
7.35 ≅ x
112.95 + 7.35 = 120.30
I think that's it! Let me know if it is! If so, please maybe consider giving me Brainliest! It would really help me out!
similfy the following ratio 1) 20:45 2) 12:32:20 3) 5m:350cm
Answer:
1) 20/45= 4/9=4:9
2) 3:8:5
3) 10:7
What is the volume of this retangular prism
Answer:
27
Step-by-step explanation:
3 times 3 times 3
length times width times height
I hope this helped!
Answer:
27
Step-by-step explanation:
Factor
x
3
+
6
x
2
+
2
x
+
12
Answer:
♿⚠️⛔☢☣⬆️↗️➡️↘️⬇️↙️⤵️⤴️↪↩↔️↕️↖️⬅️
50 POINTS!!! HELP ME PLEASE!!!!
Step-by-step explanation:
1. 3.6 x 10^-1
2. 3.1 x 10^6
3. 5.3 x 10^-6
4. 4.2 x 10^-1
h+6.9+11.4
a
4.0
b
4.5
c
5.0
d
5.5
Could you please express this question better, I don't seem to understand the objective.
Ms. Barnsley separates her class into two groups. She gives each student the same 25-question math quiz. Group A uses a calculator, while Group B does not. The table shows the completion times, in minutes, of students in each group.
Which statement is true about the distributions of completion times?
The students in Group A tended to complete the quiz in less time.
The median of Group A is greater than the median of Group B.
The means of both groups are about the same.
The standard deviation of Group B is less than the standard deviation of Group A.
Answer:
The median of Group A is greater than the median of Group B.
Step-by-step explanation:
Given
[tex]\begin{array}{cccccccccc}{Group\ A} & 4.5 & 4.8 & 4.6 & 5.0 & 4.8 & 4.4 & 4.7 & 5.2 & 3.9 \ \\ {Group\ B} & 5.5 & 4.9 & 4.0 & 4.2 & 4.8 & 4.1 & 3.5 & 4.6 & 4.3 \ \end{array}[/tex]
Required
Which of the options is true
(a) Group A complete in less time
To do this, we calculate the average of both using:
[tex]\bar x = \frac{\sum x}{n}[/tex]
Where
[tex]n = 9[/tex]
So, we have:
[tex]\bar x_A = \frac{4.5 + 4.8 + 4.6 + 5.0 + 4.8 + 4.4 + 4.7 + 5.2 + 3.9}{9}[/tex]
[tex]\bar x_A = \frac{41.9}{9}[/tex]
[tex]\bar x_A = 4.66[/tex]
[tex]\bar x_B =\frac{5.5 + 4.9 + 4.0 + 4.2 + 4.8 + 4.1 + 3.5 + 4.6 + 4.3}{9}[/tex]
[tex]\bar x_B =\frac{39.9}{9}[/tex]
[tex]\bar x_B =4.43[/tex]
The average time of Group A is higher than that of B, this means that Group A spend more time, on average.
(b) Group A has a greater median
First, we sort the given data in ascending order
[tex]\begin{array}{cccccccccc}{Group\ A} & 3.9 & 4.4 & 4.5 & 4.6 & 4.7 & 4.8 & 4.8 & 5.0 & 5.2 \ \\ {Group\ B} & 3.5 & 4.0 & 4.1 & 4.2 & 4.3 & 4.6 & 4.8 & 4.9 & 5.5 \ \end{array}[/tex]
The median is then calculated using:
[tex]Median = \frac{n + 1}{2}th[/tex]
This gives:
[tex]Median = \frac{9 + 1}{2}th[/tex]
[tex]Median = \frac{10}{2}th[/tex]
[tex]Median = 5th[/tex]
The median is the fifth item for both groups.
So, we have:
[tex]A =4.7[/tex]
[tex]B =4.3[/tex]
4.7 is greater than 4.3
Hence, (b) is true
Since (b) is true and only one option is correct, then (c) and (d) are incorrect
Answer:
b
Step-by-step explanation: