Solve for x.
Enter the solutions from least to greatest.
—4x2 – 7 = -11
lesser x =
greater x =
Answers
Answer:
lesser x = - 1 , greater x = 1
Step-by-step explanation:
- 4x² - 7 = - 11 ( add 7 to both sides )
- 4x² = - 4 ( divide both sides by - 4 )
x² = 1 ( take square root of both sides )
x = ± [tex]\sqrt{1}[/tex] = ± 1
then
lesser x = - 1
greater x = 1
Related Questions
Which survey question could have been asked to produce this data display?
A How much does your dog weigh?
B How many times do you feed your dog each day?
C How many bags of dog food do you buy each month?
D How much does your bag of dog food weigh?
Answers
Answer:
D.
Step-by-step explanation:
I did the test, and the previous answers were incorrect :)
Answer:
The correct answer to this question would be B:
Step-by-step explanation: Have a good day
Multiply.
12x^4 (-5/6x^3y^2)
Answers
Answer:
-10[tex]x^{7}[/tex][tex]y^{2}[/tex]
Step-by-step explanation:
12[tex]x^{4}[/tex]([tex]-\frac{5}{6} x^{3}[/tex][tex]y^{2}[/tex])
First multiply 12 * - [tex]\frac{5}{6}[/tex] , solving this you get -10
Next multiply [tex]x^{4}[/tex] by [tex]x^{3}[/tex] , solving this you get [tex]x^{7}[/tex]
Finally you have [tex]y^{2}[/tex], and nothing to multiply it by. So it stays as [tex]y^{2}[/tex]
Put is all together and you get -10[tex]x^{7}[/tex][tex]y^{2}[/tex]
-10x^7y^2
i do k12 i just took that test
Solve using elimination. Write your answer as an ordered pair (x,y).
3x - 4y = -29
and
6x + 5y = -32
Answers
Answer:
x=-7,y=2
Step-by-step explanation:
3x - 4y = - 29
and 6x + 5y = - 32
3x - 4y = - 29 (1)
6x + 5y = -32 (2)
equation (1) x 2
6x-8y = -58
equation (2) × 1
6x + 5y = - 32
Substracting → - 13y = -26
13y = 26.
26/ 13 ⇒ y =
⇒ yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy = 2
Putting y = 2 in equation (1), we have
3x - 4(2) = - 20
→ 3x = -29 +8
→3x = -21
→ X = -7
x = - 7
In the study of vacuum tubes, the equation y + (0.4)(y^ -1) y' y 0 is encountered. Find the Taylor polynomial of degree 4 approximating the solution with initial values y(0)= 1, y'(0) 0 P4 (x)=
Answers
Answer: let me get back with you after
Step-by-step explanation:
factor the expression k^2+16k+64
Answers
Answer:
[tex]\huge\boxed{\sf (k + 8)(k + 8)}[/tex]
Step-by-step explanation:
Given expression:
[tex]k^2+16k+64[/tex]
We can write it as:
[tex]=(k)^2+2(k)(8)+(8)^2[/tex]
Using formula [tex]\bold{a^2+2ab+b^2=(a+b)^2}[/tex]
[tex]=(k+8)^2[/tex]
= (k + 8)(k + 8)
[tex]\rule[225]{225}{2}[/tex]
15)
Common Metals
Name Melting Point Density (w/cm)
Zinc
419.53 °C 7.134
Nickel 1455°C 8.912
Copper 1084.62°C 8.96
Silver 961.78°C 10.501
Gold 1064.18°C 19.282
You are hired as a scrap metal dealer. A customer wants to sell you a piece of precious scrap metal. You know it is one of these
common metals. You slowly heat the metal and it melts at 962 °C. You also take the density of the metal and find it to be roughly
10.5 g/cm? What is the MOST LIKELY identity of the metal?
copper
A)
B
B)
gold
C)
silver
D)
zinc
Answers
The data given are
melting point density
Zinc 419.53 oC 7.134
Nickel 1455oC 8.912
Copper 1084.62oC 8.96
Silver 961.78oC 10.501
Gold 1064.18oC 19.282
density is the mass per unit volume. Melting point is determined by the intermolecular forces between particles in the solids.
We have been asked to find which cube weighs the most
density = mass/volume
when volume is constant for all the metals, then density is directly proportional to mass. Therefore metal with highest density has the highest mass.
from the given metals, metal with highest density is Gold.
correct answer is Gold.
Let's Apply Solve for the surface area of the following figures.
please i need this rn
Answers
Answer:
Step-by-step explanation:
1) Surface area of a square = s*s = 12*12 = 144 in
2) Surface area of a Cone = A=πr(r+h2+r2) = 3.142*4(4+22*2+4*2) = 351.904 cm^2
3) S.A of a Cylinder =2πrh+2πr2 = 2*3.142*2*14 + 2*3.142*2*2 = 201.088 m^2
4) S.A of a square Pyramid = a^2 + 2a squareroot (a^2/4 + h^2) = 516.5m^2
5) S.A of a Sphere = 4*pie*r^2 = 4* 3.142*15^2 = 2827.8mm^2
Construct the indicated confidence interval for the population mean using the t-distribution. Assume the population is normally distributed.
picture of question below
Answers
Using the t-distribution, it is found that the confidence interval is (14.2, 14.8).
What is a t-distribution confidence interval?The confidence interval is:
[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 18 - 1 = 17 df, is t = 2.1098.
The other parameters are given by:
[tex]\overline{x} = 14.5, s = 0.68, n = 18[/tex].
Hence, the bounds of the interval are given by:
[tex]\overline{x} - t\frac{s}{\sqrt{n}} = 14.5 - 2.1098\frac{0.68}{\sqrt{18}} = 14.2[/tex]
[tex]\overline{x} + t\frac{s}{\sqrt{n}} = 14.5 + 2.1098\frac{0.68}{\sqrt{18}} = 14.8[/tex]
The confidence interval is (14.2, 14.8).
More can be learned about the t-distribution at https://brainly.com/question/16162795
please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
C
Step-by-step explanation:
because 2.5x2.5=5 min so in a another 2 page which is 2.5 min so it C
Pat bounced a basketball 25 times in 30 seconds. At that rate, approximately how many times will Pat bounce the ball in 150 seconds?
Answers
Answer:
125
Please mark brainliest!
Step-by-step explanation:
To get this answer, we multiply 25 by 5, because 5 = 150 divided by 30.
25 x 5 = 125, so the answer is 125.
Which of the following has eight faces?
ОО
O A. octahedron
O B. tetrahedron
O C. icosahedron
O D. dodecahedron
Answers
WORTH 75 POINTS WILL MARK BRAINLYEST HELP ME PLEASE 75 75 POINTS
Answers
Your answer is [tex]\frac{d^7}{c}[/tex]
Yw :D
Answer:
d⁷/c
Step-by-step explanation:
djsjdnsjjwndjaojc
I need help! what is this equation in factored form and how do you solve it using the X-method (or really any other method?)
y = -3x^2 - x + 2
Answers
Answer:
See below
Step-by-step explanation:
Part 1:
Factored: y = (-3x+2)(x+1)
Part 2:
Not exactly sure what the "x" method is after your explaination, so ill just use the quadratic formula.
Quadratic Formula:
[tex]x = \frac{-b+/-\sqrt{b^2-4ac} }{2a}[/tex]
Also:
[tex]x^2=a\\x=b\\2=c[/tex]
So if you solve (not showing work):
Your x-ints are:
-1
2/3
Find the least common denominator (LCD) 8/9 and 4/5
Answers
Answer:
45
Step-by-step explanation:
First we write the first 10 multiples of 9 (the first denominator) :
9,18,27,36,45,54,63,72,81,90
Now we write the first 10 multiples of 5 (the second denominator) :
5,10,15,20,25,30,35,40,45,50
As we can see 45 is the lowest number that appears in both list.
Therefore 45 is the LCD of 8/9 and 4/5
Answer:
45
Step-by-step explanation:
So since we are finding the LCD, we only look at the denominators, 9 and 5.
We can count until we find the denominator:
[tex]9,18,27,36,45\\5,10,15,20,25,30,35,40,45[/tex]
So the LCD would be 45.
Which congruence theorem can be used to prove △WXS ≅ △YZS? Triangles W X S and Y Z S are connected at point S. Angles W X S and S Z Y are right angles. Sides X S and S Z are congruent. SSS ASA SAS HL
Answers
Answer: ASA
Step-by-step explanation:
6 more than x is less than 4
Answers
Answer:
how
Step-by-step explanation:
Answer:
6×4?
Step-by-step explanation:
6 is more than 4 bro
what need to do here
In a class of 26 students, 14 have a cat and 7 have a dog. There are 5
students who have a cat and a dog. What is the probability that a
student chosen randomly from the class does not have a dog?
Answers
Now, 14/26 only own a cat. So you can do a cross multiplication (as shown in the picture) to find the probability.
Final answer: 53.8%
Solve for x: 3(x + 1) = 2(x - 1)
0-5
What’s the answer?
Answers
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
x=−8/3
Decimal Form:
x=−2.6
Mixed Number Form:
x=−2 2/3
hope this helps
3x+3=2x-2
3x+3-2x=-2
3x-2x=-2-3
x=-2-3 because 2+3 is five so it’s -2 so it would be - five(-5) just - turns into plus
x=-5
Prior to June 1, Sandler Company had no treasury stock transactions. Then, on June 1, the company paid $5,000 to purchase 100 shares of its common stock on the open market. On July 1, the company sold 50 of these shares at $52 per share. Then, on August 1, the company sold the remaining 50 shares at $46 per share. Prepare the journal entry
Answers
Answer:
Explanation:
The journal entries are shown below:
On June 1Treasury Stock A/c Dr $5,000 (50 shares × $100)
To Cash A/c $5,000
(Being treasure stock is purchased)
On July 1Cash A/c Dr $2,600 (50 shares × $52)
To Treasury Stock A/c $2,500 (50 shares × $50) To Paid in capital - Treasury stock $100(Being treasury stock is sold at higher price and the remaining amount would be credited to the paid in capital account)
On August 1Cash A/c Dr $2,300 (50 shares × $46)
Paid in capital - Treasury stock $100
Retained Earnings A/c Dr $100
To Treasury Stock A/c $2,500 (50 shares × $50)(Being treasury stock is sold at lower price and the remaining amount would be debited to the retained earning account)
Endeye needs to split 1/5 of the dinner left over from last week to feed her 3 siblings. What fraction of the original dinner will each sibling have to eat tonight?
Answers
Answer:
They each had 1/20 of the original meal
Step-by-step explanation:
To begin, there are 4 people. Her siblings, and herself. She is splitting the 1/5 leftover to feed them. To do this, we simply take 1/5 and put it into a fraction to get 0.2. Next, we can put 0.2 / 4 into a calculator to get how much each person can get.
0.2 / 4 = 0.05.
Now, we need to turn it into a fraction to find out how much they had in fraction form of the original.
0.05 = 1/20
They each had 1/20 of the original meal
How is Fibonacci seen in nature
Answers
Simplify 16 - 8 + 5x- 3x
8+8 x
10 x
8 + 2 x
16 + 2 x
Answers
Answer:
8 + 2x
Step-by-step explanation:
To simplify this expression, combine like terms.
16 - 8 = 8
5x - 3x = 2x
8 + 2x
hope this helps :)
Answer:
Because of the x between the 5 and 3 u have to put them in a bracket form or group like terms. After that u subtract the 16 from 8 and the 5x from the 3x so the answer will be equal to 8 +2x because 16-8=8 and 5x-3x=2x so it will be 8+2x
2. Expand the following expression: 7 (1 + f)
Answers
Hello!! I'm always here to help!!!
_____________________
7 (1+f) = 7 · 1 + 7f
= 7 · 1 + 7f
_____________________
Have a great day!!
9) Write the equation of the given line in slope-intercept form:
Answers
Answer:
[tex]y = - 3x - 1[/tex]
Step-by-step explanation:
shown in attachment
To rent a certain meeting room, a college charges a reservation fee of $19 and an additional fee of $6 per hour. The chemistry club wants to spend at most $49 on renting the room. What are the possible numbers of hours the chemistry club could rent the meeting room?
Use t for the number of hours.
Write your answer as an inequality solved for t.
Answers
Answer:
t >= 5
Step-by-step explanation:
PLSS I NEED HELP ASAPPP!!!
Mary had 12 eggs. She ate 2 eggs per day (x). Choose all of the points that would lie on a graph of the line representing the number of eggs remaining, y, after x days. O A. (2,4) B. (2,8) C. (2,10) D. (4,2) E. (4.4) G F. (4,8)
Answers
Answer:
B. (2,8)
E. (4,4)
Explanation:
equation that can be created: y = 12 - 2(x)
where y is the remaining eggs and x is days
sequence: coordinates:
1st day: 12 - 2 = 10 (1,10)
2nd day: 10 - 2 = 8 (2,8)
3rd day: 8 - 2 = 6 (3,6)
4th day: 6 - 2 = 4 (4,4)
5th day: 4 - 2 = 2 (5,2)
6th day: 2 - 2 = 0 (6,0)
Explain why 16 to the power of 1/2 is equal to 4. Give as much detail as possible. FIRST ONE TO ANSWER GETS BRAINLIEST
Answers
Answer:
4
Step-by-step explanation:
16^1/2 = sqrt(16) = 4
4*4 = 16
OLZ HELP ILL MARK AS BRAINLEST
Use the excerpt to answer the question. As Melanie climbed down into the 2 points rowboat, Gina scooted over on the bench to make room for her. "We have to pick up Jacob now," Gina said, handing Melanie one of the oars. “And we should hurry so we can be long gone before the patrol barge comes by." Gina hadn't told Mom where she was going. Her mother had been smoothing a washcloth over Brandon's forehead as Gina had headed out. When her mother had asked where she was off to, Gina had tossed out some vague explanation. It was better for Mom not to worry. She had enough to worry about these days. They all did. Which statement conveys the main idea of the excerpt?
Gina, Melanie, and Jacob are worried to leave Brandon when they take their rowboat out because they know his mother has been fussing over him a lot lately.
Gina and Melanie need to get Jacob before they are caught, and Gina doesn't want her mother to know where she is going so as not to worry her.
Gina's mom is worrying about her and Melanie because they are going to pick up Jacob in their rowboat.
Jacob is missing, and his friends Melanie and Gina decide to go looking for him without telling anyone
Answers
Answer:
the second one
Step-by-step explanation:
Gina's mom does not know where she is, meaning that Gina did not tell her and implyling she did not want to worry her.
6×8×<10×5 is it true or false
Answers
Answer:
True
Step-by-step explanation:
6 × 8 = 48
10 × 5 = 50
48 < 50
hope this helps :)
What is the discriminant of the polynomial below?
9x^2 - 18x + 9
A. 0
B. 648
C. -306
D. -18