Answer:
16
Step-by-step explanation:
The sum of 3 and 13 would look like this as an equation, 3 + 13 = ? Just add 3 to 13 and you get 16 as your answer.
Simplify 2x2 - y for x= 3 and y=-2.
Answer:
20
Step-by-step explanation:
2x^2-y
x = 3 and y = -2
So then we have 2*3^2--2 which equals 20.
The solution to the algebraic expression 2x² - y for x= 3 and y=-2. is: 22
How to solve Algebra Expressions?An algebraic expression in mathematics is defined as an expression which is made up of variables and constants, along with algebraic operations
We are given the algebraic expression as:
2x² - y for x= 3 and y=-2.
Thus, plugging in 3 for x and -2 for y in the given equation and we have:
2(3)² - (-2)
= (2 * 9) + 4
= 18 + 4
= 22
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Any body know, 38 to the power of 5? i know its hard, it is for me.
38 to the power of 5 is written as 38^5
When a number is raised to a power, multiply that number by itself the number of the power:
38 x 38 x 38 x 38 x 38 = 79,235,168
Danielle can run one mile in 8.835 minutes Alex can run 1 mile and 9.75 minutes how much longer in minutes does it take for Alex to run 1 mile that it takes Danielle
Answer:
0.915 minutes
Step-by-step explanation:
First, take the 9.75 minutes that it takes Alex and the 8.835 minutes it takes Danielle.
Second, line up the numbers annexing zeros as placeholders as needed.
Third, subtract them
9.750
-8.835
-----------
0.915
Find the total cost to the nearest cent.
$9,000 car: 5% sales tax
Answer:
$9,450.00
Step-by-step explanation:
to take sales tax, you convert the % into a decimal ( in this case 5% is equal to 0.05) and multiply that by the cost of the product:
9,000 x 0.05 = 450
that is the amount that you pay in tax. In order to get the entire total add that amount to the original price:
9,000 + 450 = 9,450
find the value of 15 minus 8 divided by 2
Answer:
3.5
Step-by-step explanation:
15 - 8 = 7
7 / 2 = 3.5
If x= –4 and y= 3 , what is the value of x–3y2 ?
Answer:
-31
Step-by-step explanation:
(-4)-3(3)^2
-4-3(9)
-4-27=-31
Hey!
---------------------
Solution:
= x - 3y²
= (-4) - 3(3)²
= (-4) - 27
= -31
---------------------
Answer:
-31
---------------------
Hope This Helped! Good Luck!
What else would need to be congruent to show that ABC = XYZ by ASA?
Given:
Z=C
CB=ZY
A. Y=B
B. AC=XZ
C. BC=YZ
D Z=A
The answer would be A because line CB is equivalent to ZY tight? And angles Z and C are congruent. We also know that they are congruent by a ASA relationship, so then angles Y and B are congruent, the answer is A.
To establish that triangles ABC and XYZ are congruent by ASA, we need two pairs of angles and one pair of sides to be congruent. Given that angle Z equals angle C, side CB equals side ZY, the missing piece is option D: Z equals A.
Explanation:In the problem statement, we're given that triangle ABC = XYZ by ASA, which stands for Angle-Side-Angle congruence. To establish this, we require two angles and one side of the triangle to be congruent. The given details tell us that angle Z is congruent to angle C, and side CB is congruent to side ZY.
To complete the ASA proof, we need another pair of angles to be congruent. Based on the options presented in the question, option D Z=A will fulfill this requirement, thereby proving ABC = XYZ by ASA.
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Round the following numbers to 1 decimal place,
a)
68.75
b)
5.894
c) 634.9201
d)
89.99
Final answer:
The numbers 68.75, 5.894, 634.9201, and 89.99 when rounded to one decimal place become 68.8, 5.9, 634.9, and 90.0 respectively.
Explanation:
The student is asking for rounding to one decimal place. Here is how you round the given numbers:
68.75: The digit after the decimal point to keep is 7. The next digit is 5, so we round up. The result is 68.8.5.894: The first decimal digit is 8, and the next digit is 9, so we round up. The answer is 5.9.634.9201: After the decimal, the first digit is 9 and the next digit is 2, which does not affect the rounding. Therefore, we get 634.9.89.99: The first decimal digit is 9. The next digit is also 9, so we round up. This gives us 90.0.Help me please!!? Idk it
Answer:
do the area of the triangle formula the base × height ÷ 2
-2(4-1) = -16 +y
What does y equal
Answer:
10
Step-by-step explanation:
[tex]-2(4-1) = -16 +y\\-2(3) = -16 +y\\-6 = -16 +y\\y = 16 - 6\\y = 10[/tex]
(-7)2 (-5)3= evaluate
Answer:
Step-by-step explanation:
(-7)2 (-5)3 = -14 * -15 = 210
1. Convert the number to scientific notation.
265, 984, 325, 100
2.66 ×[tex]10^{11}[/tex]
Hope this helps
x square= 121 can anyone solve it
Answer:
Picture is the answer.
Step-by-step explanation:
What is the awnser to -12/-4=
[tex]\frac{-12}{-4}[/tex] is 3.
Answer:
-12/-4 is 3
Step-by-step explanation:
hope this helps !!
Nando is on a rehabilitation program following a car accident. For the first month, he needs to exercise at most five hours per week and must burn at least 2,000 calories per week. The exercise he is allowed to
do is brisk walking which burns about 350 calories per hour and biking at a moderate pace which burns
about 700 calories per hour. Which graph best represents the set of all points that satisfy the system
representing Nando's exercise options?
Answer:
See explanation
Step-by-step explanation:
Let x be the number of hours per week Nando is brisk walking and y be the number of hours per week Nando is biking at a moderate pace.
For the first month, he needs to exercise at most five hours per week, then
[tex]x+y\le 5[/tex]
Brisk walking burns about 350 calories per hour, then it burns 350x calories per x hours.
Biking at a moderate pace burns about 700 calories per hour, then it burns 700y calories per y hours.
Nando must burn at least 2,000 calories per week, so
[tex]350x+700y\ge 2,000[/tex]
You get the system of two inequalities:
[tex]\left\{\begin{array}{l}x+y\le 5\\ 350x+700y\ge 2,000\end{array}\right.[/tex]
The attached graph shows the solution set to this system of inequalities. In this diagram, red region represents the solution set to the first inequality, blue region represents the solution set to the second inequality and their intersection is the solution set to the system of two inequalities.
What is 118 rounded to the nearest hundred
Answer:
100.
Step-by-step explanation:
118 rounded to the nearest hundred is 100
When rounding 118 to the nearest hundred, we look at the tens digit (which is 1 in this case). Since this digit is less than 5, we round down to the nearest hundred. Therefore, 118 rounded to the nearest hundred is 100.
Bob cycles 5.4 km every morning. How many feet are in 5.4 km, given that 1 mile = 1.609 km and 1 mile =5,280 feet?
Answer:
17720 feet
Step-by-step explanation:
5.4 km × (1 mile / 1.609 km) × (5280 feet / mile) ≈ 17720 feet
Answer:
17,720.32
Step-by-step explanation:
Divide 5.4 by 1.609 x 5,280 = 17,720.32
The length of a rectangle is 2 km less than 3 times the width. If the perimeter is 68 km,What is the length of the rectangle
Answer:
The length of the rectangle is 25 km
Step-by-step explanation:
Let
x ----> the length of rectangle
y ----> the width of rectangle
we know that
The perimeter of rectangle is
[tex]P=2(x+y)[/tex]
we have
[tex]P=68\ km[/tex]
so
[tex]68=2(x+y)[/tex]
simplify
[tex]34=(x+y)[/tex]---- > equation A
[tex]x=3y-2[/tex] ---> equation B
substitute equation B in equation A and solve for y
[tex]34=(3y-2)+y[/tex]
[tex]34=4y-2[/tex]
[tex]4y=34+2[/tex]
[tex]4y=36[/tex]
[tex]y=9\ km[/tex]
Find the value of x
[tex]x=3(9)-2=25\ km[/tex]
therefore
The length of the rectangle is 25 km
OMG PLZ HELP RN
Five-eighths of a number decreased by twelve is the same as one-half of the number increased by two.
5/8x-12=1/2x+2
What is the answer?
Answer:
112
Step-by-step explanation:
The number is 112 if Five-eighths of a number decreased by twelve is the same as one-half of the number increased by two the answer is 112.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have:
Five-eighths of a number decreased by twelve is the same as one-half of the number increased by two.
Let x be the number:
From the question:
(5/8)x - 12 = (1/2)x + 2
The above equation is a linear equation in one variable:
After solving:
(5/8)x - (1/2)x = 12 + 2
(5-4)x/8 = 14
x = 14×8
x = 112
Thus, the number is 112 if Five-eighths of a number decreased by twelve is the same as one-half of the number increased by two the answer is 112.
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Simplify by combining like
terms:
--6x - 12 + 8y + 16x
The answer is 10x+8y-12 if the problem was -6x - 12 + 8y + 16x because you added an extra negative at the start.
send help plzzzzz •~•
b.3/5
c.three
d.three
1 3
- * -
5 5
the reason the bottom is 5 is bc its was a number
1. What number divided by 4 1/5 is of 100?
Answer:
420
Step-by-step explanation:
Let the number be x
x / (4 1/5 ) = 100
x / (21/5 ) = 100
x = 100 * (21 / 5) = 20 * 21 = 420
Hanna shops for socks that cost $2.99 for each pair and blouses that cost $12.99 each. Let x represent the number of pairs of socks purchased, and let y represent the number of blouses purchased. Which equation models the purchases she made with $43.92?
x + y = 15.98
x + y = 43.92
43.92x - 2.99y = 12.99
2.99x + 12.99y = 43.92
Answer:
2.99x + 12.99y = 43.92
Step-by-step explanation:
Because, 2.99 is for each pair of socks and she bought x number of that. Same for 12.99 (Y).
In conclusion her total was 43.92 and she could have bought many socks as she'd like and blouses.
These calculations are 100% correct! :)
Answer:
D.
Step-by-step explanation:
Oh Edge
Sketch a rectangle and label its dimensions that meets the following conditions perimeter 18 area 20
Answer:
4 units by 5 units
Step-by-step explanation:
To solve this problem, then we must develop two equations; one for the perimeter and another for the area of the rectangle.
The perimeter of a rectangle = 2(L +B)
The area of a rectangle = L x B
Let the length be represented by L while the breadth is denoted by B. Then, our equations are
2L + 2B =18 --- eq 1
and
LB = 20 ----- eq 2
From eq 2, then L = 20/B
We shall substitute this in equation 1 such that
2(20/B) + 2B =18
= 40/B + 2B = 18
= 40/B + 2B/1 = (40 + 2B^2) /B =18
We do cross multiplication by multiplying both sides of the equation by B.
We get
40 + 2B^2 = 18B
We then rearrange the equation as 2B^2- 18B + 40 = 0
Dividing both sides by 2, we get B^2- 9B =20 =0
We shall get the roots of the equation to be -4 and -5. Why?
-4B-5B =-9 and -4x-5 =20
Thus, B^2- 9B =20 =0 can be reworked as
(B-4) (B-5)= 0 From B-4=0, B= 4
From LB =20, If B =4, then L =20/4 = 5
From B-5=0; B=5
From LB =20, If B=5, L = 20/5 = 4
Thus, the dimensions of the rectangle are 5 units and 4 units.
A number cube, labeled 1 to 6, is rolled once. What is the theoretical probability that a 4 is rolled
Answer:
1 out of 6 chance
Step-by-step explanation:
Since there are 6 possible numbers that could be rolled, and 1 number, the number 4, the chances are a 1 out of 6 chance.
An airplane is at an elevation of 4,280 ft. It ascends 500 ft and later descends1,500 ft. What is its final elevation?
Answer: 5280
Step-by-step explanation: just do 4280-500=3780
and then add 1500 to 3780 and you get 3180+1500=5280 wich is your answer
What is the simplified version of 127/30
Answer:
Step-by-step explanation:
The simplified version of 127/30 is 4 7/30 (mixed number)
127/30 is basically 127 divided by 30, so if you divide 127 by 30, you get 4 and a remainder of 7. WAIT! That's not where I stop. The quotient is the whole number, the remainder is the numerator, and the divisor is the denominator. Therefore, the simplified version of 127/30 is 4 7/30.
Answer:
4 7/30
Step-by-step explanation:
This is an improper fraction.
30 goes into 127 four times with 7 left over.
You place 7 over the original denominator of 30
7/30 is a reduced fraction so ...
4 and 7/30 is your answer.
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Please help me!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
a. 81.9
b. 144.7
c. 110.2
d. 48
Step-by-step explanation:
a. 120/109.2 = 90/x
x = 81.9
b. 45.6/120 = 55/x
x = 144.7
c. 304.8/96 = 350/x
x = 110.2
d. 109.2/45.6 = 115/x
x = 48
Enter an inequality that represents the description, and then solve.
Nine more than seven times a number (x) is at least thirty.
Inequality:
The solution to the inequality is
Answer:
7x + 9 ≥ 30
x ≥ 3
Step-by-step explanation:
7x + 9 ≥ 30
7x ≥ 21
x ≥ 3
Final answer:
The inequality 7x + 9 ≥ 30 represents the description given, and the solution is x ≥ 3, meaning any number greater than or equal to 3 satisfies the inequality.
Explanation:
The inequality that represents the description 'nine more than seven times a number (x) is at least thirty' is written as 7x + 9 ≥ 30.
To solve this inequality:
Subtract 9 from both sides of the inequality: 7x ≥ 21.Divide both sides by 7 to isolate x: x ≥ 3.Therefore, the solution to the inequality is that x must be a number greater than or equal to 3.
3(x - 6) + 6 = 5x - 6. what is the solution
Answer:
x=-3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
3(x−6)+6=5x−6
(3)(x)+(3)(−6)+6=5x+−6(Distribute)
3x+−18+6=5x+−6
(3x)+(−18+6)=5x−6(Combine Like Terms)
3x+−12=5x−6
3x−12=5x−6
Step 2: Subtract 5x from both sides.
3x−12−5x=5x−6−5x
−2x−12=−6
Step 3: Add 12 to both sides.
−2x−12+12=−6+12
−2x=6
Step 4: Divide both sides by -2.
−2x
−2
=
6
−2
x=−3
Answer: x = -3
Step-by-step explanation:
1. Distribute the 3 into the parenthesis
3x - 18 + 6 = 5x - 6
2. Combine like terms (on the left side of the equation
3x - 12 = 5x - 6
3. Add 6 to both sides to get rid of the -6 on the right side
3x - 6 = 5x
4. Subtract 3x from both sides to get rid of the 3x from the left side
-6 = 2x
5. Divide both sides by 2
-3 = x