Answer:
20
Step-by-step explanation:
4^2 = 16
-2^2 =-4
16 -(-4) =20
Write the question the symbols represent, then solve it.
f(-2)=-3+2x^2
Answer:
f(-2) = 5
Step-by-step explanation:
Step 1: Define
f(x) = -3 + 2x²
f(-2) is x = -2
Step 2: Substitute and Evaluate
f(-2) = -3 + 2(-2)²
f(-2) = -3 + 2(4)
f(-2) = -3 + 8
f(-2) = 5
Decrease $820 by 32%
Answer:
557.6
Step-by-step explanation:
Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% is read p 'percent',
p% = p/100 = p ÷ 100.
32% = 32/100 = 32 ÷ 100 = 0.32.
100% = 100/100 = 100 ÷ 100 = 1.
Percentage decrease = 32% × 820
New value =
820 - Percentage decrease =
820 - (32% × 820) =
820 - 32% × 820 =
(1 - 32%) × 820 =
(100% - 32%) × 820 =
68% × 820 =
68 ÷ 100 × 820 =
68 × 820 ÷ 100 =
55,760 ÷ 100 =
557.6
Answer:
32/100 × 820
council the zeros
32/10 × 82
32× 82/10
2624/10
= 262.4
Step-by-step explanation:
there's ur answer
I will give Brain list plz help !!!!!
Answer:
140
Step-by-step explanation:
Evaluate 3x^2+1 when x=-1
Answer:
10
Step-by-step explanation:
3(-1)=-3
-3^2=9
9+1=10
. Three out of four students in school have at least one sibling. If there are 300 students in your school, how many would have at least one sibling?
Answer: 225 students would have at least one sibling.
Step-by-step explanation:
Three out of four is the same as 3/4 meaning that if there are 300 students in your school then 3/4 times 300 will give the number of students with at least one sibling.
3/4 * 300 = 225
This means 225 students would have at least one sibling.
hey i need help what is 3 squared 6x7
Answer:
378
Step-by-step explanation:
use the order of operations (PEMDAS)
3²6×7
9×6×7. solve the EXPONENT
54×7. MULTIPLY left to right
378. multiply one last time
Answer: 1512 maybe
Step-by-step explanation:
How many solutions does the following equation have ?
–42 – 7 + 10x = -7 + 62
2-2+5+1-3*55+12-33*98
Answer:
-3054
hdjsfahjkdhfjkdsaf
0.55 minute to 0.1 minute
Answer:
81.8182% decrease
Step-by-step explanation:
(V2−V1)|V1|×100
=(0.1−0.55)|0.55|×100
=−0.450.55×100
=−0.818182×100
=−81.8182%change
=81.8182%decrease
You are selling pizzas to raise money for a school field trip. Cheese pizza cost $8 and pepperoni pizza cost $9. You need to sell at least two of each kind of pizza, and you want to sell at least $180 worth of pizza. Write an inequality.
Answer: $180 ≤ 8c + 9p
guys what is 1 + 1
ive been trying to solve it all day
teachers give IMPOSSIBLE questions!!
Answer: AHHHHHH I WILL HELP
Step-by-step explanation:The statement which describes the meaning of the slope is " The boiling point decreases by 1.8 degrees as the altitude increases by 1,000 feet " ⇒ D
Step-by-step explanation:
The boiling point of water (measured in degrees), at altitude (measured in feet), is modeled by the function T(a) = −0.0018 a + 212, where
a is the altitude measured in feet
T(a) is the boiling point of water in degree
The form of the linear function is f(x) = mx + b, where m is slope (the rate of change), and b is the y-intercept (the value of f(x) at x = 0)
By comparing between the form of the function and the given function
∴ m = -0.0018 ⇒ degrees per foot
∵ The sign of the slope is negative
∵ The slope = Δf(x)/Δx
- That means T(a) is decreasing function
∴ The boiling point is decreases when the altitude increasing
∵ -0.0018 = degrees per feet
∴ The boiling point decreases by 18 degrees as the altitude
increases by 10,000 feet or the boiling point decreases by 1.8
degrees as the altitude increases by 1,000 feet
The statement which describes the meaning of the slope is " The boiling point decreases by 1.8 degrees as the altitude increases by 1,000 feet "
Learn more:
You can learn more about the linear function in brainly.com/question/9801816
ITS 2
$15,785,025 using words
Answer:
fifteen million, seven hundred eighty-five thousand, twenty-five dollars
Step-by-step explanation:
HOPE THIS HELPS!
GOOD LUCK!
Answer:
fifteen million, seven hundred eighty-four thousand, twenty-five
Step-by-step explanation:
Please show your work? Thank you 10 points.
Answer:
13
Step-by-step explanation:
12^2+5^2=x^2
144+25=x^2
169=x^2
Take the square root of 169 and get 13
-1.1 devide by -2 need help with this
Answer:
Step-by-step explanation:
-1.1 divided by -2 would be -3
Answer:
11/20 or 0.55
Step-by-step explanation:
-1.1÷-2=0.55
You have a party of four that requested separate checks. The table's checks were for $35, $28, 942, and $22. With tips
you collect $144 from the table. Tips of over 15% indicate the service is good. Did tipping indicate good service at this table?
a) Yes
b)No
Answer:
No
Step-by-step explanation:
Answer: no
The total bill amounts up to $1,027.00. Fifteen percent of $1,027.00 is $154.05. The waiter received $144.00. Therefore she did not indicate good service.
Plz mark brainliest:)
Were rotations or translations harder for you to learn? Please explain why.
Answer:
yes
Step-by-step explanation:
bc when u do rotations you have to do it step by step and if u miss a step u wont get in right
Answer: Rotations
Step-by-step explanation:
Because the conversions are a bit tricky to deal with.
A young sumo wrestler decided to go on a special high − -protein diet to gain weight rapidly. After 1 1 11 months, he weighed 1 4 0 k i l o g r a m s . 140 kilograms. He gained weight at a rate of 5 . 5 k i l o g r a m s 5.5 kilograms per month. Let y y represent the sumo wrestlers weight ( i n k i l o g r a m s ) (in kilograms) after x months. Whats the y-intercept?
Given:
After 11 months, sumo wrestler weighed 140 kilograms.
He gained weight at a rate of 5.5 kilograms per month.
To find:
The y-intercept of the equation which represents y the sumo wrestlers weight (in kilograms) after x months.
Solution:
Let y represent the sumo wrestlers weight (in kilograms) after x months.
It is given that he gained weight at a rate of 5.5 kilograms per month.
So, slope of the line is 5.5.
After 11 months, sumo wrestler weighed 140 kilograms. It means the line passes through the point (11,140).
The point slope form of the line is
[tex]y-y_1=m(x-x_1)[/tex]
where, m is slope of the line.
[tex]y-140=5.5(x-11)[/tex]
[tex]y-140=5.5x-60.5[/tex]
Add 140 on both sides.
[tex]y-140+140=5.5x-60.5+140[/tex]
[tex]y=5.5x+79.5[/tex]
Therefore, the required equation is [tex]y=5.5x+79.5[/tex].
Substitute x=0, to find the y-intercept of this equation.
[tex]y=5.5(0)+79.5[/tex]
[tex]y=79.5[/tex]
Therefore, the y-intercept is 79.5. It means initial weight of sumo is 79.5 kilograms.
Find 3 consecutive odd integers such that 1 less than 3 times the larger is equal to the sum of twice the first and twice the second number. Please explain why and with steps.
Answer:
7, 9, 11
Step-by-step explanation:
If x is the smallest of the integers, then x+2 is the next consecutive odd integer, and x+4 is the largest odd integer.
1 less than 3 times the largest is equal to the sum of twice the first and twice the second.
3(x+4) − 1 = 2x + 2(x+2)
3x + 12 − 1 = 2x + 2x + 4
3x + 11 = 4x + 4
7 = x
The integers are 7, 9, and 11.
HELP what is -12=f-7
Answer:
F = -5
Step-by-step explanation:
-5 - 7 = -12
Think of it like this if you see a problem that goes like -4 - 3 then changed the minus symbol to a plus sign and change the 3 to a negative 3.
Answer:
f= -5
Step-by-step explanation:
-12=f-7 than u subtract the f to the other side giving you -f-12=-7 than you add the 12 to the -7 giving you 5 but than you have -f=5 and you need f to be bye it self and it's not bye it self because, it have the negative with it so you need to divide -1 into 5 giving you f= -5
Please help thank you so much!<3
Answer:
A.) 1/16
Step-by-step explanation:
Remove parenthesis 2^-4
Use negative power rule 1/2^4
Simplify 2^4 to 16
Answer 1/16
Answer:
1/16 is the answer to that
Step-by-step explanation:
if the exponent is negative, you will bring it down with the whole number and change the sign to positive, hope this helps!! have an nice day!!
Points A, B, and C are collinear. Point B is between A and C. Solve for x
Find AC if BC=11x-1, AC=21x, and AB=11.
Bob needs to buy 300 pencils for
his class. If each box holds 25
pencils, how many boxes does he
need to buy?
Answer:
12
Step-by-step explanation:
300/25=12
12x25=300
29points!
Match the vocab word with the definition:
.1Devices, such as parentheses, brackets, and fraction bars, used to set apart an expression that should be simplified before other operations are performed
2.
An expression that consists of numbers, operations, and sometimes grouping symbol.
3.
The order in which operations must be computed when more than one operation is involve.
4.
A number representing how many times the base number should be multiplied by itself.
5.
A Symbol that represents a value that can change.
6.
A single number or variable, or numbers and variables multiplied together.
7.
The numerical factor in a term. A number being multiplied by a variable.
8.
A number on its own, it has a fixed value.
9.
A combination of variables, numbers, and operations.
10.
You replace, or substitute, all the variables with numbers and then simplify.
11.
A statement that the values of two math expressions are equal (indicated by the sign =).
12.
The relation between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.
13.
The symbol of a math operation.
plus, minus, times, divided by, equals
14.
An equation or inequality containing one or more variable
Open Sentence
Exponent (Power)
Numerical Expression
Operator
Term
Evaluate
Order of Operations
Grouping Symbol
Constant
Coefficient
Variable Expression
Equation
Inequality
Variable
A:8
B:14
C:3
D:11
E:7
F:4
G:1
H:12
J:9
K:10
L:2
M:6
N:5
O:13
how do you solve this equation shown?
5x - 3(x + 9) + 10 = 4
Answer:
[tex]x = \frac{21}{2}[/tex]
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
5x − 3(x+9) + 10 = 4
5x + (−3)(x) + (−3)(9) + 10 = 4 (Distribute)
5x + −3x + −27 + 10 = 4
(5x+−3x) + (−27+10) = 4 (Combine Like Terms)
2x + −17 = 4
2x − 17 = 4
Step 2: Add 17 to both sides.
2x − 17 + 17 = 4 + 17
2x = 21
Step 3: Divide both sides by 2.
[tex]\frac{2x}{2} = \frac{21}{2}[/tex]
[tex]x =\frac{21}{2}[/tex]
Hope it helps!!
22 elephants is 65% of what
number of elephants?
Answer:
The Answer Is: 33.846153846154
round to the digit needed
Step-by-step explanation:
64 ft of rope weighs 20 pounds 28 ft of rope weighs x pounds
Answer
89.6
Step-by-step explanation:
Each foot of rope weighs 3.2 so then mutiplied 3.2 by 28 and got that
Waich of the following is a true statement about perpendicular lines?
A. Perpendicular lines intersect to form a 45° angle.
B. Perpendicular lines can also be parallel lines.
C. Perpendicular lines cannot be parallel to each other.
D. Perpendicular lines intersect in at least two points.
Answer:
C
Step-by-step explanation:
perpendicular lines intersect at a 90 degree angle, meaning it is not answer choice A.
B is incorrect because perpendicular lines intersect, so they can not be parallel.
C is correct because parallel lines never intersect, so perpendicular lines can never be parallel to each other.
D is incorrect because perpendicular lines only intersect at one point and create four consistent right angles.
your letter grade is a function of your numerical grade. what is the independent variable
Answer:
a function of your numerical grade
Step-by-step explanation:
because the sentence can not stand on its own
Find the result when 68 is decreased by 50%
Answer:
34
Step-by-step explanation:
68÷2=34
Which linear equation has a slope of 3 and a y-intercept of -2?
y = 3x + 2
y=3x-2
y=-2x + 3
y = -2x - 3
Answer:
y=3x-2
Step-by-step explanation:
3 is the coefficient of x (slope)
-2 comes after (y-int)
linear equation y = 3x-2 has a slope of 3 and a y-intercept of -2.
What is the Slope of a line?A line's slope can be determined by looking at its slope. The slope is determined mathematically as "increase over run" (change in y divided by change in x). There are several ways to find the slope, including standard form, slope-intercept form, and point-intercept form.
Given, A linear equation that has a slope of 3 and a y-intercept of -2.
Y-intercept of -2 means at x = 0 y would be -2
The slope-intercept form of a line is
y = mx + c
where m = slope
c = constant
Substituting the values in the given equation
-2 = 0 * 3 + c
c = -2
thus, the equation of the line,
y = 3x -2
therefore, The y-intercept of the linear equation y = 3x-2 is -2, and its slope is 3.
Learn more bout slope here:
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