Answer:
That is the formula for solving quadratic equations like:
ax^2+bx+c = 0
You substitute the variables from your quadratic equation to solve them.
Graph the following word problem and then write an equation: Jamal started with $4 in his savings and makes an additional $3 per week.
Answer:
use desmos
Step-by-step explanation:
put y=3x+4 and make a graph from that its really helpful trust me
The graph shows the number of cases of bottles of water and the total number of bottles of water.
Bottles of Water
Write an equation that you can use to determine the number of bottles of water in the store if you know then number of cases of water.
Answer:
b = 24c
Step-by-step explanation:
what is 13 % of 120.00 dollars and why
Answer:
15.6
0.13 times 120=15.6
Answer:
15.60
Step-by-step explanation:
You multiply 13% and 120.00 to get the answer I hoped that I helped you have a nice day or nigh!
Please help!! I need the answer asap
Mr. Starnes wondered what proportion of Katy Perry's Twitter followers are
female, so he selected a random sample of 500 of Katy Perry's followers. In the
sample, 308 are female. Construct and interpret a 90% confidence interval for the
true proportion of Katy Perry followers that are female.
Answer and Step-by-step explanation:
To calculate a confidence interval for a proportion:
1) Determine the proportion
[tex]p=\frac{308}{500}[/tex]
p = 0.616
2) A 90% confidence interval has z-score that is 1.645.
3) Calculate margin of error
[tex]ME=\sqrt{\frac{p(1-p)}{n} }[/tex]
where
n is the sample size
So
[tex]ME=\sqrt{\frac{0.616(1-0.616)}{500} }[/tex]
[tex]ME=\sqrt{\frac{0.616(0.384)}{500} }[/tex]
ME = 0.02175
Then the interval is given by
p ± z(ME)
0.62 ± 1.645(0.02175)
0.62 ± 0.035
The interval will be
0.585 < p < 0.655
What this means is that we are 90% confident that the true proportion of Katy Perry's Twitter female followers is between 0.585 and 0.655.
What is the value of point A ? ---------
Answer:
The answer is (5,3) because x=5 and y=3
Answer:
the answer is (5,3).
Step-by-step explanation:
5 by 3 is 15, so there are 15 squares or units.
Benita buys 2 shirts for the same price, s. The sales tax rate is 6.5%.
Write an expression to represent the total cost of the shirts in two different ways.
Enter the correct answers in the boxes.
Answer:
2S + 0.065(2S)
Step-by-step explanation:
Since S is the price of a shirt, the price of two shirts would be 2 x S = 2S
a tax is a compulsory sum levied on goods and services. tax increases the price of a good
The price of the 2 shirts would increase by the amount of tax ; 0.065(2S)
This gives = 2S + 0.065(2S)
Alternatively, since two shirts were purchased, the amount of tax would be twice 0.065 - 0.13 - S + S + 0.13S
We want to write two expressions that represent the total cost of the shirts, the expressions are:
Cost = P*(1.065) + P*(1.065)
cost = P*2.13
We know that Benita buys two shirts for the same price, P.
Then at this moment. the total cost is just:
cost = 2*P
Now we apply a 6.5% tax, then the price increases by 6.5%, this is written as:
P' = P*(1 + 6.5%/100%) = P*(1.065)
Then the total cost is twice that amount, written as:
Cost = P*(1.065) + P*(1.065)
This can be one of the two expressions.
Now to get the other expression, we just simplify the above one:
cost = 2*P*(1.065) = P*2.13
If you want to learn more, you can read:
https://brainly.com/question/20853486
Which statement is true about the slope of the graphed line?
Which equation can be used to determine the
value of x?
Answer:
The yellow one
Step-by-step explanation:
Answer:
the yellow one
is the answer
How many four-digit numbers can be made from the numerals 7, 6, 5, and 3?
24
4
12
Answer:
12 different four digit numbers
Step-by-step explanation:
Answer:
24
Step-by-step explanation:
permutations! order required
P(4,4) = [tex]\frac{4!}{(4-4)!} = \frac{4!}{0!} = \frac{24}{1}[/tex]
What’s the answer to this please? Thank u!
Answer:
I think the answer is C.
Step-by-step explanation:
Have a good day ;-).
Abdullah and Kanna are working on the same problem.
A juice box has 20% more juice in its new packaging.
The original packaging held 12 fluid ounces. How
much juice does the new packaging hold?
Whose double number line is correct?EXPLAIN YOUR THINKING!!!!!!!
Answer:
Abdullah is correct.
Step-by-step explanation:
The bottle contained originally 12 fl oz, so 12 fl oz is 100%.
The box now contains 20% more, so now it contains 120% of 12 fl oz.
120% * 12 fl oz = 1.2 * 12 fl oz = 14.4 fl oz
Also, 20% is 1/5. Abdullah divided 12 oz into 5 equal parts, and then he added one more 1/5. He interpreted the problem correctly. The amount in the new bottle is the amount of the old bottle plus 20% of that old amount.
Kanna considers the original amount to be 80%. When he adds another 20%, he is adding 1/4 of 12 which is too much. That is why he gets an incorrect answer that is to high. He interpreted the problem incorrectly. For him, the old bottle has 20% less than the new bottle. That is incorrect.
Abdullah is correct.
List 3 synonyms for the word input in math?
List 3 synonyms for the term outputs in math?
Please help this is due today and I really need help.
Synonyms for the word 'input' in math:
Domain and Range
Synonyms for the word 'output' in math:
Range of the function
Explanation:-
The input is the number you feed into the expression
The output is what you get after the look-up work or calculations are finished.
2. Given the equation of a circle in standard form, identify the center, radius, and graph the circle.
(x + 1)2 + (y - 2)2 = 36
Center:
Radius:
Answer:
Center: ( -1 , 2 )
Radius: 6
Step-by-step explanation:
The equation for a circle is given as follow:
[tex](x-h)^{2} +(y-k)^{2} =r^{2}[/tex]
Where,
the Center is: ( h , k ) (note that the signs of the number are different)
and the radius is: r
So if we compare the original circle equation to the equation in the question we can see that:
[tex](x+1)^{2} +(y-2)^{2} =36[/tex]
the Center is: (-1,2)
and the radius is: [tex]\sqrt{36}[/tex] = 6
2. To draw the graph find points that lay on the circle, it's better to take the values of x and y from the Center:
first sub y=2 in the equation to find the values for x:
[tex](x+1)^{2} +(y-2)^{2} =36[/tex]
[tex](x+1)^{2} +(2-2)^{2} =36[/tex]
[tex](x+1)^{2} +(0)^{2} =36[/tex]
[tex](x+1)^{2} =36[/tex]
[tex]x+1 =±\sqrt{36}[/tex]
[tex]x=6-1[/tex] AND [tex]x=-6-1[/tex]
[tex]x=5[/tex] AND [tex]x=-7[/tex]
The points are A(5,2) and B(-7,2)second sub x= -1 in the equation to find the values for y:
[tex](x+1)^{2} +(y-2)^{2} =36[/tex]
[tex](-1+1)^{2} +(y-2)^{2} =36[/tex]
[tex](0)^{2} +(y-2)^{2} =36[/tex]
[tex](y-2)^{2} =36[/tex]
[tex]y-2=±\sqrt{36}[/tex]
[tex]y=6+2[/tex] AND [tex]y=-6+2[/tex]
[tex]y=8[/tex] AND [tex]y=-4[/tex]
The points are D(-1,8) and E(-1,-4)After finding the points write them in the graph and match them together to get the like the circle in the picture below:
I also need help with this one
Answer:
perimeter=2(l+b)=2(16+24)=80
rate =$2per inch
total cost=perimeter ×rate=80×2=$160is your answer
10. What is the exponent in this equation: 5*(x-2) = 125 *
O
Х
X-2
5
O
125
Step-by-step explanationperdonbro solo quo ielos prutnos j
:
Answer:
Step-by-step explanation:
[tex]5^{(x-2)}=125\\ \\ 5^{(x-2)}=5^3\\ \\ x-2=3\\ \\ x=5\\ \\ \text{So the exponent is 3}[/tex]
Without graphing, tell if the coordinate (5,3) is a solution to
the inequality shown below by choosing TRUE or FALSE.
2x - y < 5
True
False
Verify the identity.
[tex]cos 4u = cos^{2} 2u - sin^{2} 2u[/tex]
Answer:
Yes, it is an identity
Step-by-step explanation:
Given △ACD and △CDF, what is FD?
Can i Get some help? 5 stars!
Answer:
FD is Congruent to DC
Step-by-step explanation:
Solve for x your answer must be simplified. -4+x<9
Answer:
x<13
Step-by-step explanation:
To solve this, we want to have the isolate the variable x on the left side, by itself without a coefficient. All we have to do to do this is add 4 to both sides, cancelling out the -4 and getting x<13
Answer:
x = 13 + y
Step-by-step explanation:
Simplify:
-4 + x = y + 9
Reorder the terms:
-4 + x = 9 + y
Move all terms containing x to the left all other terms to the right
Add 4 to each side of the equation
-4 + 4 + x = 9 + 4 + y
Combine like terms: -4 + 4 = 0
0 + x = 9 + 4 + y
x = 9 + 4 + y
9 + 4 = 13x = 13 + y
Answer:
x = 13 + y
Help me please!
I don’t get this question
Supplementary angles are angles that when you add them, make 180 degrees, which is a straight line. They are not to be joined together but added. So if one measures 90 degrees more than another, well what's the answer? I hope this helps.
If x = -6 and y= 2, evaluate the following expression:
x² + y²
Answer:
40
Step-by-step explanation:
-6 * -6 = 36
2 * 2 = 4
= 40
someone help okeseeee
Answer:
volume=lxbxh
=6*6*12
=432cm^2
6x - 5 = 5x What does x equal
Answer: x=5
Step-by-step explanation: u can just simplify it
Admission for adults is 12 dollars. Admission for kids is eight dollars.One day 575 people entered the cave paying 5600 how many adults into the cave
Answer:
Step-by-step explanation:
Admission for adults is 12 dollars. Admission for kids is eight dollars.One day 575 people entered the cave paying 5600 how many adults into the cave
What is the sum of the exterior angles of this octagon?
Answer: D: 360°
An octagon is supposed to have a total of 360°, each side being equivalent to 45°. In conclusion, the exterior angle of this octagon is equivalent to 360°
Evaluate the expression using properties of operations.
-1.2 ÷ 1/6 × 5 × (-2)
A) -72
B) 2
C) 72
D) 120
Please include explanation, thx!
Answer:
-72 is the correct answer
X 65° 20 round to the nearest tenth
Answer:
sorry
Step-by-step explanation:
What is 110% of 100,000
Answer:
It is 110000 your welcome
Step-by-step explanation:
No explanation need luv
Please help!!! Thank you so much!!
Answer:
45 inches
Step-by-step explanation:
If the larger rectangle is 72, then you divide it by 8 because that is the ratio of the bigger rectangle. 72/8 = 9 so that means that the scale value of the shapes is 9 because they are proportional. So, you multiply 9 time 5 to get 45 which is the smaller rectangle.