Answer:
x=\frac{7+\sqrt{249}}{10},\:x=\frac{7-\sqrt{249}}{10}
Step-by-step explanation:
Answer:
f(x) = 5x^2−7x−10
Step-by-step explanation:
Quadratic equation standard form is f(x) = ax^2 +bx + c . All you had to do was add 3 to both sides of the equation to change this into standard form. :)
Help plz. I don't get this.
Answer:
6/4
Step-by-step explanation:
up 6 and over 4
° • .°• ✯
° • .°• ✯ ★ * ° °·
° • .°• ✯ ★ * ° °· . • ° ★ • ☄
° • .°• ✯ ★ * ° °· . • ° ★ • ☄▁▂▃▄▅▆▇▇▆▅▄▃▁▂
Make a triangle to find c, the hypotenuse.
Using the Pythagorean Theorem:
a^2+b^2=c^2
4^2+6^2=c^2
16+36=c^2
52=c^2
7.211102550927=c
7.2~c
which inequality is true if p = 3.4
Researchers were investigating whether there is a significant difference between two medications, R and S, designed to reduce fleas found on cats. From a sample of 300 cat owners, the researchers randomly assigned 150 cat owners to use medication R on their cats and the remaining cat owners to use medication S. For the cats using medication R, 88 percent had no fleas. For the cats using medication S, 90 percent had no fleas. Which of the following is the most appropriate method for analyzing the results?
A two-sample z -test for a difference in population proportions
A two-sample z-test for a difference in sample proportions
A one-sample z-test for a sample proportion
A one-sample z-test for a population proportion
A one-sample z-test for a difference in sample proportions
Answer:
A) A two-sample z -test for a difference in population proportions
Step-by-step explanation:
To determine whether a difference in proportions is significant, the two-sample z-test for a difference in population proportions is the most appropriate method for the analysis.
The most appropriate method for analyzing the results is A. A two-sample z-test for a difference in population proportions.
What is the hypothesis?In statistics, hypothesis testing is the process by which an analyst tests an assumption about a population's parameter.
In this scenario, we have two different treatments (medication R and S) applied to two separate samples (150 cat owners each) and we want to determine if there is a significant difference in the proportion of cats with no fleas between the two groups.
This is a classic scenario for a two-sample z-test for a difference in population proportions, which tests the hypothesis that the difference in proportions between two independent populations is equal to zero.
Thus, a two-sample z-test for a difference in population proportions.
Hence, the correct answer would be option (A)
To learn more about the z-test statistic click here:
brainly.com/question/29692242
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RECREATION An instructor at a swimming pool asked her students if they would be interested in a n advanced swimming course, and 60% stated that they would. Is the sample method valid? If so, suppose there are 870 pool members. How many peoplecan theinstructorexpecttotakethecourse?
8(4n + 3) = – 72
show your work
Answer: n= −3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
8(4n+3)=−72
(8)(4n)+(8)(3)=−72(Distribute)
32n+24=−72
Step 2: Subtract 24 from both sides.
32n+24−24=−72−24
32n=−96
Step 3: Divide both sides by 32.
32n/32 = −96/32
n=−3
Answer:
n= -3
Step-by-step explanation:
32n+24=-72
(subtract 24)
32n=-96
(divide by 3)
n=-3
Find the value of x.
Answer:
The answer is 148 or D
Step-by-step explanation:
The line has 180 degrees total, to find the answer you subtact 32 from 180. This leaves you with 148.
Answer: x = 148°
Step-by-step explanation: All supplementary angles equal 180°. So you subtract 32° from 180° (180°-32°) and get your answer.
for each line, determine whether the slope is positive, negative, zero or undefined. (this is homework.)
Answer:
I think 1 is negative, 2 undefined, 3 negative, 4 positive
Step-by-step explanation:
Answer:
1. zero
2. undefined
3. negative
4. positive
Your mom is throwing a huge party for your graduation! Her total budget for the party is $1050. She must pay a fee of $400 to hold your party at Dave & Buster's. She is responsible for paying $50 for each guest so that they can eat and play. How many guests, g, can you invite to your graduation party?
Step-by-step explanation:
She has 1050
400 of that is the DB fee
Now she has 650 dollars
650/50 per person is 13
She can have 13 people
Please help ;-;
2(3x -8y) - 6 =
Answer:
6x - 16 y -6
Step-by-step explanation:
okay so first you have to distribute the 2 to the number inside the parenthesis
2(3x-8y) -6
you do 2 x 3x, which is 6x
then 2 x -8y, which is -16y
Now the new equation is 6x - 16 y -6
There you go!!
Please write a persuasive essay on why parents are more important than peers.
10 - 6z = -104 *pls help me
Answer:
z=19
Step-by-step explanation:
PLEASE HELLPP!!!!! Don’t know what it is
Answer:
I think of having straight line
how long is the shorter ladder
What’s the value of x?
Answer:
6*15 = 5(x+5)
90 = 5x + 25
65 = 5x
x = 13
Step-by-step explanation:
I've gone ahead and labeled some points.
There is a formula that says PA*PB = PC*PD, this is what you use. If you would like me to show why this works I would be happy to.
So what we have is PA = 6, PB = 9+6 = 15, PC = 5 PD = 5+x so let;s writ ethe formula with these values
6*15 = 5(x+5)
90 = 5x + 25
65 = 5x
x = 13
EDIT: Here is the explanation for the formula
If you form triangles PCB and PAD you can find angle D and angle B are the same, because they are inscribed angles that intersect the same arc of the circle. Also angle P is the same on both triangles since they are the same angle, so this means both triangles are similar.
This means DA is similar to BC, AP is similar to CP and PD is similar to PB. Similar sides means if you can multiply one side by a number to get to its similar side, then you can multiply all sides by that value to get all sides of that similar triangle.
This also means if you divide one side by its similar side you get the scale value, so this means if you do it to two different sets of similar sides you get the same number
[tex]\frac{PA}{PC}=\frac{PD}{PB}\\PA*PB = PC*PD[/tex]
Determine whether the equation has one solution, no solution, or infinite solutions.
Explain your reasoning.
9x + 2 = -4(x + 6)
Answer:
x=4.4
Step-by-step explanation:
9x+2 = 4x+ 24
5x+2 = 24
5x = 22
5x/5 = 22/5
x=4.4
i got one solution scream at me if im wrong
Can you help me with this? (easy)
Answer:
6. 18
7. 8
do the rainbow method
Answer:
The GCF of 36 and 90 is 18
The GCF of 16, 24, and 40 is 8
Step-by-step explanation:
can I get help with my homework
Find the solution of the system of equations.
10x+6y= 16
−10x+5y= 50
Answer:
( − 2 , 6 )
x = − 2
y = 6
Step-by-step explanation:
Evaluate the expression 6.2 - (-9.1).
Answer: 15.1
Step-by-step explanation: subtracting a negative (ex. 1 - (-1)) just change to addition (prev. ex. would be 1+1) (also adding decimals is like adding normal numbers just remember the place values
what is x? (7x+1)=(9x-7)
Step-by-step explanation:
Given
7x + 1 = 9x - 7
9x - 7x = 1 + 7
2x = 8
x = 8 / 2
x = 4
Hope it will help :)❤
PLZZZZZZZZZ Help Me Cuz
Answer:
1.54
2.t greater or equal to -4
3.12>9
Answer:
2. t is less than or equal to -4.
3. 12+n
4. 40 10/21
5. 3/32 pounds
Step-by-step explanation:
If this answer has helped you, please mark as brainliest
(In picture) “Explain how you know you know using proportional lengths”
9514 1404 393
Answer:
yes
Step-by-step explanation:
If GH║FE, then ∆DEF ~ ∆DHG.
In similar triangles, corresponding sides have the same ratios.
The ratios of corresponding sides are ...
DG/DF = DH/DE
DG/(DG + GF) = 18/(18+36)
(1/2GF)/((1/2GF +GF) = 1/3
(1/2)/(3/2) = 1/3
1/3 = 1/3
Corresponding sides are proportional. Angle D is congruent to itself, so ∆DEF ~ ∆DHG by the SAS similarity postulate. Angles DGH and DFE are therefore congruent and GH║FE.
16 1/4 divided by 3.25
Someone pls help
Answer:
20
Step-by-step explanation:
16 1/4 ÷ 3.25
16×4=64+1=65
65/3.25=20
Answer:
The answer is 5.
Step-by-step explanation:
you do this by converting the decimal 3.25 into a fraction. This would equal 3 1/4 (simplified) now since that both fractions have the same denominator we can solve by dividing the fractions.
HELP PLEASE ANSWER NOW
Solve the following system of equations algebraically using the ELIMINATION METHOD. Show all work.
x-3y=1
3x-5y=11
Answer:
(7,2)
Step-by-step explanation:
Multiply the first equation by -3
(x-3y=1) = -3x+9y=-3
Combine like terms with the new equation and the second equation
(-3x+9y=-3) + (3x-5y=11) = 4y=8
Divide each side by 4
4y/4=8/4
y=2
Plug in 2 for y in any equation. It doesn’t matter which one
x-3(2)=1
Distribute
x-6=1
Add 6 to both sides
x-6=1
+6 +6
x=7
Answer: x = 7 y = 2
(7, 2)
Step-by-step explanation:
Multiply the first equation by -3 and the second by 1:
-3(x - 3y = 1)
1(3x - 5y = 11)
Becomes:
-3x + 9y = -3
3x - 5y = 11
Add the equations to eliminate x:
-3x + 9y = -3
3x - 5y = 11
4y = 8
Solve for y by dividing by 4:
4y/4 = 8/4
y = 2
Now we plug in y to the first equation:
x - 3 ( 2 ) = 1
x - 6 = 1
Add 6 to both sides:
x - 6 + 6 = 1 + 6
x = 7
Item 5
Find the area of the circle. Round your answer to the nearest hundredth.
area: about
cm2
The base and the height of Triangle A are half the base and the height of Triangle B. How many times greater is the area of Triangle B?
The area of Triangle B is
times greater
Answer:
Let's say that the base of triangle a is 2 and the height is 3. That makes the base and height of triangle b 4 and 6. To find the area of a triangle, use the formula 1/2 multiplied by height multiplied by base. So the area of triangle a is 2 multiplied by 3 multiplied by 1/2 giving us 3. The area of triangle b is 1/2 multiplied by 4 multiplied by 6 giving us 12. Since 12 divided by 3 is 4, the area of triangle b is 4 times greater than the area of triangle a.
I need help with number 2
Answer: Area= 10
Step-by-step explanation:
The length is 2 the width is 5 2x5 equals 10 :D
Answer:
If its in inches, than the area is 10.
Step-by-step explanation:
I need help pls help
Answer:
I could be wrong, but I think it's D
if your answer is -2 what is my solution
Answer:
is there a photo ? or something
Marty and Adam want to share 8/10 feet of rope, equally. What amount of rope should each person get?
Answer: 2/5 feet
Step-by-step explanation:
From the question, we are informed that Marty and Adam want to share 8/10 feet of rope, equally.
The amount of rope that each person would get would be calculated by dividing 8/10 by 2. This will be:
= 8/10 ÷ 2
= 8/10 × 1/2
= 8/20
= 2/5
Therefore, each person gets 2/5 feet of rope.