Step-by-step explanation:
x^2+(x+9)^2=90
x^2+(x+9)^2-90=0
x^2+x^2+9^2+2*x*9-90=0
x^2+x^2+81+18x-90=0
2x^2+18x-9=0
Diego pours 8 ounces of water from a full bottle of 36 ounces. What is the percent of decrease of water in the bottle?
Answer:
The answer is 22%.
Step-by-step explanation:
All you need to do to figure this out is to divide 36 by 8.
8/36=.222222
Hope this helps!
A farmer fed 9 bags of food to his 5 cows. Each cow ate the same amount of food. How many bags of food did each cow eat?
Answer:
1.8 bags
Step-by-step explanation:
you just divide 9 by 5
The number of bags of food that each cow eats will be 1.80 bags.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
A farmer fed 9 bags of food to his 5 cows. Each cow ate the same amount of food.
Then the number of bags of food that each cow eats will be given as,
⇒ 9 / 5
⇒ 1.80 bags
The number of bags of food that each cow eats will be 1.80 bags.
More about the Algebra link is given below.
https://brainly.com/question/953809
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I know it's very trifling of me to ask this but, I do not understand. If can so much as help me with just a few that would save me a lot.
Answer:
Percent increase
1. [tex]60[/tex] %
2. [tex]50[/tex] %
3. [tex]74.42[/tex] %
4. [tex]11.46[/tex] %
5. [tex]220[/tex] %
Step-by-step explanation:
1. $5 to $8
[tex]\frac{8-5}{5} * 100 = 60[/tex] %
2. From 20 students to 30 students
[tex]\frac{30-20}{20} * 100 = 50[/tex] %
3. From 86 books to 150 books
[tex]\frac{150-86}{86} * 100 = 74.42[/tex] %
4. From $3.49 to $ 3.89
[tex]\frac{3.89-3.49}{3.49} * 100 = 11.46[/tex] %
5. From 5 mile to 16 mile
[tex]\frac{16-5}{5} * 100 = 220[/tex] %
14d - 22 + 5d = 12d - 8
Answer:
d = 2
Step-by-step explanation:
14d - 22 +5d = 12d - 8
19d -22 = 12d - 8
+22 +22
19d = 12d + 14
-12d -12d
7d = 14
/7 /7
d = 2
Answer:
d = 2
Step-by-step explanation:
Simplifying
14d + -22 + 5d = 12d + -8
Reorder the terms:
-22 + 14d + 5d = 12d + -8
Combine like terms: 14d + 5d = 19d
-22 + 19d = 12d + -8
Reorder the terms:
-22 + 19d = -8 + 12d
Solving
-22 + 19d = -8 + 12d
Solving for variable 'd'.
Move all terms containing d to the left, all other terms to the right.
Add '-12d' to each side of the equation.
-22 + 19d + -12d = -8 + 12d + -12d
Combine like terms: 19d + -12d = 7d
-22 + 7d = -8 + 12d + -12d
Combine like terms: 12d + -12d = 0
-22 + 7d = -8 + 0
-22 + 7d = -8
Add '22' to each side of the equation.
-22 + 22 + 7d = -8 + 22
Combine like terms: -22 + 22 = 0
0 + 7d = -8 + 22
7d = -8 + 22
Combine like terms: -8 + 22 = 14
7d = 14
Divide each side by '7'.
d = 2
Simplifying
d = 2
Evaluate the expression when n = 2.3. 5(n − 2) + 9 =
Answer:n=2.3.5(n-2)+9=n=44.6
Find 55% of 85.
a) 46.75
b) 154.55
c) 4675
d) 45.65
Answer:
46.75
Step-by-step explanation:
55% × 85 = 46.75
If you don't know what 55% is in decimal then it is 0.55. You also do this way and will give you the same answer.
0.55 × 85 = 46.75
Hope this helps, thank you !!
Answer:
46.75.
Hope this helps! :)
me need help whit math
Answer:
0.39%
hope this helps
Mariah ordered 50 beads. 8 of the beads were blue. What percent of the beads were blue?
Answer:
16%
Step-by-step explanation:
Hope this helps :D
25/35 Marks
Find the midpoint of A and B where A has coordinates (8, 2)
and B has coordinates (3,8).
Answer:
[tex]\displaystyle (\frac{11}{2},5)[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Coordinates (x, y)Midpoint Formula: [tex]\displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]Step-by-step explanation:
Step 1: Define
Point A(8, 2) → x₁ = 8, y₁ = 2
Point B(3, 8) → x₂ = 3, y₂ = 8
Step 2: Find Midpoint
Simply plug in your coordinates into the midpoint formula to find midpoint
Substitute in points [Midpoint Formula]: [tex]\displaystyle (\frac{8+3}{2},\frac{2+8}{2})[/tex][Midpoint] [Fraction] Add: [tex]\displaystyle (\frac{11}{2},\frac{10}{2})[/tex][Midpoint] Divide: [tex]\displaystyle (\frac{11}{2},5)[/tex]Write the polynomial in standard form: x^2+4-3x
Answer:
x^2-3x+4
Step-by-step explanation:
good at math & need points? help!!
Answer:
D
Step-by-step explanation:
-6p-3=9 what does p equal
Answer:
-2
Explanation:
-6 x -2 = 12
12 - 3 = 9
Answer:
p=-2
Step-by-step explanation:
Move the -3 to the other side by adding 3 on both sides:
-6p-3+3=9+3
The equation now looks like this:
-6p=12
Divide -6 on both sides:
-6p/-6=12/-6
The equation now looks like this:
p=-2 which is the answer
Hope this helps!
6) Which of the following are solutions to the inequality: m > 4? (Choose all that apply.)
A. 10
B. 4
C. 7
D. 5
7) Which of the following values would NOT be in the solution set for the inequality: 3m > 12
A. 10
B. 4
C. 7
D. 5
Answer:
c
a
Step-by-step explanation:
Answer:6) A:10 7) B:4
Step-by-step explanation:
m=input value, correct? So,
4 is NOT greater than 4, so the answer must be 10
3(4) is NOT greater than 12
Explain how to do this please!
Answer:
4 children per counselor
Step-by-step explanation:
Since the question is asking children per counselor, divide the children/counselor. Check all of the rows by dividing the children by counselor to make sure the constant of proportionality is correct. If you divide correctly, the constant of proportionality you get is 4.
Hope it helps!
Answer:
there is 4 students per conceler.
Step-by-step explanation:
please mark as brainllist.
A circle has a diameter of 6ft. What is the area of the circle?
Very easy!! (i think-_-) A≈28.27 ft2 :))
passes through (-1, -5) and (2, 6)
Answer:
[tex]y = \frac{11}{3}x + -\frac{4}{3}[/tex]
Step-by-step explanation:
[tex]y = mx + b\\m = \frac{-5 - 6}{-1 - 2} = \frac{-11}{-3} = \frac{11}{3} \\\\y = \frac{11}{3}x + b\\6 = \frac{11}{3}(2) + b\\6 = \frac{22}{3} + b \\6 - \frac{22}{3} = b \\b = -\frac{4}{3}\\\\y = \frac{11}{3}x + -\frac{4}{3}[/tex]
3sin60°+xcos30°.tan45°=xcot30°
Answer:
x = (6[tex]\sqrt{2}[/tex])/(4[tex]\sqrt{2}[/tex] -3)
Step-by-step explanation:
sin60 degree = [tex]\sqrt{3}[/tex] /2
cos30 degree = 1/2
tan 45 degree = sin45 degree / cos45 degree = ([tex]\sqrt{2}[/tex]/2)/([tex]\sqrt{2}[/tex] /2) = 1
cot 30 degree = cos30 / sin30 = ([tex]\sqrt{3}[/tex] /2)/(1/2) = [tex]\sqrt{3}[/tex]
so, let us plug the above values in the given eqution and solve for x
3([tex]\sqrt{3}[/tex] /2 ) + x(1/2) *1 = x([tex]\sqrt{3}[/tex])
3([tex]\sqrt{3}[/tex] /2 ) = x([tex]\sqrt{3}[/tex]) -x(1/2)
3([tex]\sqrt{3}[/tex] /2 ) = x(([tex]\sqrt{3}[/tex])-(1/2)) (by taking x as a common factor)
3([tex]\sqrt{3}[/tex] /2 ) = x(((2[tex]\sqrt{3}[/tex])-(1))/2)) (making the same common denominator
now devide both sides by (((2[tex]\sqrt{3}[/tex])-(1))/2))
x = 3([tex]\sqrt{3}[/tex] /2 ) / (((2[tex]\sqrt{3}[/tex])-(1))/2))
x = 3([tex]\sqrt{3}[/tex] ) / ((2[tex]\sqrt{3}[/tex])-(1))
does 9/20 and 18/30 form a proportion
Answer:
No, they don't.
Step-by-step explanation:
I'm going to divide 18 by 9 and 30 by 20. If the quotients are the same, then we do have a proportion.
18 ÷ 9 = 2
30 ÷ 20 = 1.5
The quotients aren't the same. Same thing if you convert the fractions to decimals:
9 ÷ 20 = 0.45
18 ÷ 30 = 0.6
This means the two values do NOT form a proportion.
Hope this helps! Have a great day!
Answer:
No.
Step-by-step explanation:
9/20=18/30
9*30=20*18
120=360
If you would like to know how this works please do not hesitate to ask.
The radius of a circle is 10 feet. What is the angle measure of an arc bounding a sector with area 15 square feet?
17/8x+3/4x+1/6-7/12x+18/3 simplify
Answer:
55x + 148/24
Explanation:
Solve the system of equations.
- 5y + 8x = -18
5y + 2x = 58
х=
y =
Answer:
x = 4 and y = 10
Step-by-step explanation:
-5y + 8x = -18
5y + 2x = 58
First you will want to get rid of y from both equations, so you add both equations together.
You will get 10x = 40, then subtract 10 from both sides and you get x = 4.
Now substitute x as 4 in any of the equations to get y.
-5y + 32 = -18
-5y = -50
y= 10
Answer:
x = 4
y = 10
What is the least common denominator of the rational expressions below?
2/7 - 7/4x^2+12x
O A. 4x^2(x + 3)
O B. x^2(x + 3)
O c. x^2(x + 3)
O D. 4x^2(x+3)
Answer:
A. 4x^2(c+3)
Step-by-step explanation:
please help me will give you brainliest!!
Answer:
yes, no, no, yes
Step-by-step explanation:
Plug in each point into both equations to see which ones fit.
For the first point, (4,1) it works for both equations.
1=-2( 4 ) + 9, 1= -8 + 9, 1=1
4( 4 )+2( 1 )=18, 16 + 2 = 18, 18 = 18
Do it for the rest of the points and plug them in and you get,
no for (5,-3) because -1 does not equal to -3
no for (6,0) because -3 does not equal to 0
(-5,19) is yes because 19=19 and 18=18
Please mark me brainliest
Find the value of f(-9).
y = f(x)
Benjamin uses a $20 bill to pay for his lunch. He received more than $5 in change. Which number line shows the possible cost of Benjamin's lunch?
Answer:
i dont see a number line, attach a pic pls
Step-by-step explanation:
Aldo's scores on four tests are 88, 85, 100, and 86. What must the score be on the fifth test for her average to be 90?
x=5th test score
(88+85+100+86+x)/5=90
(359+x)/5=90
71.8+x/5=90
-71.8 -71.8
x/5=18.2
*5 *5
x=91
the fith test score has to be 91 in order for the average to be 90
What is the perimeter of this figure
40 in.
10 in.
50 in.
18 in.
Answer:
236
Step-by-step explanation:
100+100+36=236
Answer:
C. 180
Step-by-step explanation:
Solve 2(x - 5) = 3(x + 7)
Answer:
x = -31
Step-by-step explanation:
2(x-5) = 3(x+7) 1. Use distributive property
2x - 10 = 3x + 21 2. Add 10 on both sides
2x = 3x + 31 3. Subtract 3x on both sides
-x = 31 4. Divide by -1
x = -31
explain what the Diameter is and how is the radius related to it.
What can the radius and Diameter help us find?
Answer:
The diameter is any straight line that passes through the center of the circle, which endpoints can lie on. The radius is half the diameter. They help us find the circumference of a circle
Answer:
The diameter is the length of the line through the center that touches two points on the edge of the circle. It is related to the radius because whatever the diameter is is double what the radius is. In differential geometry, the diameter is an important global Riemannian invariant.
Step-by-step explanation:
-(x-3)=-7 I need help with this equation
Answer:
x = 10
Step-by-step explanation:
Given
- (x - 3) = - 7 ( divide both sides by - 1 )
x - 3 = 7 ( add 3 to both sides )
x = 10