A drought can cause the level of the local water supply to drop a few inches each week. Suppose the level of water supply drops 2 inches each week. How many will it change in 4 weeks?
if a data set has 16 data values the number of values in the upper quartile is
Answer:
its 4
Step-by-step explanation:
lester and kari are playing a number pattern game. kari wrote the following pattern. 45.5,49,52.5,__,59.5
what is the unknown number in the pattern kari wrote?
show work
Eleven minus the quotient of a number and 8 is 15
x/8-11=15
Quotient means to divide. So, the question is asking you to divide a number and 8. Then, subtract it from 8 to get the answer 15.
100 envelopes cost you .70 what would 250 envelopes cost you
at a park, there are 38 people playing tennis some or playing doubles and some are playing singles there are 13 matches in progress, A doubles match requires 4 players and a singles match requires 2 players.
a. write a system of two equations that represents the number of singles and doubles matches going on.
b. how many matches of each kind are in progress
The math team sold 42 hamburger meals and 15 ribs meals at the pep rally for a total of $243. At the game that night, they sold 36 hamburger meals and 30 ribs meals for a total of $294. What is the cost of 1 rib meal?
Answer:
$5.
Step-by-step explanation:
Let h be the cost of each hamburger meal and r be the cost of each rib meal.
We have been given that the math team math team sold 42 hamburger meals and 15 ribs meals at the pep rally for a total of $243. We can represent this information in an equation as:
[tex]42h+15r=243...(1)[/tex]
We are also told that math team also sold 36 hamburger meals and 30 ribs meals for a total of $294. We can represent this information in an equation as:
[tex]36h+30r=294...(2)[/tex]
We will use substitution method to solve our system of equations. From equation (1) we will get,
[tex]h=\frac{243-15r}{42}[/tex]
Substituting this value in equation (2) we will get,
[tex]36(\frac{243-15r}{42})+30r=294[/tex]
[tex]6(\frac{243-15r}{7})+30r=294[/tex]
[tex]\frac{1458-90r}{7}+30r=294[/tex]
Now let us have a common denominator.
[tex]\frac{1458-90r}{7}+\frac{7*30r}{7}=294[/tex]
[tex]\frac{1458-90r}{7}+\frac{210r}{7}=294[/tex]
[tex]\frac{1458-90r+210r}{7}=294[/tex]
[tex]\frac{1458+120r}{7}=294[/tex]
[tex]\frac{1458+120r}{7}\times 7=294\times 7[/tex]
[tex]1458+120r=2058[/tex]
[tex]1458-1458+120r=2058-1458[/tex]
[tex]120r=600[/tex]
[tex]\frac{120r}{120}=\frac{600}{120}[/tex]
[tex]r=5[/tex]
Therefore, the cost of 1 rib meal is $5.
Find the greatest factor of 70, 30 and 50
cat weigh 12.37 pounds whats is the word formfor the value of the 7 in 12.37
The value of '7' in the number '12.37' is seven-hundredths (0.07).
Explanation:The student is asking for the word form for the value of 7 in the decimal number 12.37. In any decimal number, the first digit after the decimal point represents the 'tenths' place, and the second digit represents the 'hundredths' place. Thus, the '7' in 12.37 represents seven-hundredths. In another words, the digit 7 here carries the value of 0.07.
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Multiply.
(3.5×10−5)(3×10−10)
Express your answer in scientific notation.
A. 1.05×10−15
B. 1.05×10−14
C. 1.05×10−13
D. 1.05×1015
Answer:
option B
Step-by-step explanation:
Multiply.
[tex](3.5 \cdot 10^{-5})(3 \cdot 10^{-10})[/tex]
To multiply it we apply exponential property
First we multiply the number 3.5 and 3
3.5 times 3 is 10.5
Now we apply exponential property to multiply the exponents
[tex]a^m \cdot a^n = a^{m+n}[/tex]
[tex]10^{-5} \cdot 10^{-10}= a^{-5-10}=10^{-15}[/tex]
[tex](3.5 \cdot 10^{-5})(3 \cdot 10^{-10})[/tex]
[tex]10.5 \cdot 10^{-15}[/tex]
To get the expression in scientific notation we move the decimal point 1 units to the left
[tex]1.05 \cdot 10^{-14}[/tex]
At basketball camp, Kyle scored 4 more than one fifth as many points as Kurt. If Kyle scored 12 points, how many points did Kurt score?
in order for Brady to earn a b in his biology course, his test scores must average at 80%. ON the first 5 tests, he has an average of 77%. There is one test remaining in the course. What is the minimum score Brady needs to earn on the last test to receive a b in the class?
Answer:
Brady needs to earn a 95% on the final test
Step-by-step explanation:
Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.
Before we can actually solve this we need to create a formula that calculates the grade of the last test in order to get an average of 80%. Since he got a 77% average for his first 5 tests, we can multiply 0.77 by 5, add the final test and then divide by the total amount of tests taken. Like so,
[tex]0.80 = \frac{(0.77*5)+x}{6}[/tex]
[tex]0.80 = \frac{3.85+x}{6}[/tex] .... multiply both sides by 6
[tex]4.8 = 3.85+x[/tex] ... subtract both sides by 3.85
[tex]0.95 = x[/tex]
Finally, we can see that Brady needs to earn a 95% on the final test in order to increase his overall average to 80%.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
256804 to nearest hundred thousand
How can the statement be written as a conditional statement in if-then form? Lines on a coordinate plane are perpendicular if they have opposite reciprocal slopes.
A) If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular.
B) If lines are on a coordinate plane, then they are perpendicular.
C) If lines are on a coordinate plane, then they have opposite reciprocal slopes.
D) If lines have opposite reciprocal slopes and are perpendicular, then they are on a coordinate plane.
the answer IS A. got it right on e2020
The correct conditional statement in if-then form for the given statement is 'If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular', which is option (A).
Explanation:The given statement can be written as a conditional statement in if-then form: 'If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular'. This represents the option (A). Here, the 'if' part presents the condition of lines on a coordinate plane having opposite reciprocal slopes, and the 'then' part gives the conclusion that they are perpendicular. It's called conditional since the conclusion depends on the condition being true.
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What is 90 x 4 Divided bye 38
A home repair service company earned $990 performing annual inspections. They charged $55 for each inspection. How many inspections did they perform? 18 19 20 22
Answer:
I'm 100% sure that the answer is A. 18 (The first option)
Give an example of how prime factorization could be used in the real world.
Answer:
Prime Factorization can be used when we eat a cake. You have to figure out how many slices you need for each person. Also how many slices they eat, you will have to use math to come up with some daily life tasks.
Step-by-step explanation:
6+8x/2 = 5x what is x?
Answer:
x=3
Step-by-step explanation:
6+8x/2=5x
6+8x/2*2=5x*2
6+8x=10x
6+8x-8x=10x-8x
6=2x
6/2=2x/2
3=x
Also I took the test so I know this is right
A polygon is regular if each of its sides has the same length. Find the perimeter of the regular polygon. #36
The perimeter of the triangle is 3 unit.
What is a Triangle?
A triangle is a polygon with three sides, angles and vertices.
The triangle is classified into various types on the basis of the angle and on the basis of the equality of the length of the sides, as obtuse , acute and right angled triangle and scalene, isosceles and equilateral triangle.
A polygon is called regular if it has all sides equal.
The figure shows a triangle.
The two sides of the triangle are 5-2x and -4x+9
When all the sides of the triangle is equal, it is called an equilateral triangle.
5-2x = -4x +9
Taking the like terms on one side,
-2x +4x = 9 -5
2x = 4
x = 2
The measure of each side is,
5 - 2*2 = 1
-4x +9 = -4 * 2 +9 = 1
The side length is 1 unit.
The perimeter of a triangle is the sum of all sides, as all the sides are equal, the perimeter is equal to 3 * side.
Perimeter = 3 * 1
Perimeter = 3 unit.
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I need help with this one problem pls help I’m estimating quotients
which equation has an a-value of 1, a b value of -3 and a c- value of -5?
The equation that has an a-value of 1, a b-value of -3, and a c-value of -5 is x^2 - 3x - 5 = 0.
The student is asking for the equation of a quadratic in the form ax^2 + bx + c = 0, where the coefficients match the given values: a = 1, b = -3, and c = -5. Therefore, the equation that fits these criteria is x^2 - 3x - 5 = 0. This is a typical problem where a student is expected to understand the standard form of a quadratic equation and identify or construct the equation based on given coefficients.
Naomi is two-thirds as tall as her father. If Naomi is 54 inches tall, how tall is her father?
Answer:
Naomi's father is 81 inches tall.
Step-by-step explanation:
Naomi is two-thirds as tall as her father.
Let "x" be the Naomi's father height.
Naomi is 54 inches tall.
[tex]\frac{2}{3}.x = 54[/tex]
We need to solve for x.
To solve for x, multiply both sides by the reciprocal of [tex]\frac{2}{3}[/tex].
The reciprocal of [tex]\frac{2}{3}[/tex] is [tex]\frac{3}{2}[/tex].
[tex]\frac{3}{2} . \frac{2}{3} . x = 54.\frac{3}{2}[/tex]
x = [tex]54.\frac{3}{2}[/tex]
x = 27.3
x = 81
So, Naomi's father is 81 inches tall.
Leroy works part time for a moving company. One day he had to move 34 boxes from a truck to inside a house. After moving some boxes, he took a break and told his boss that he has only 15 more boxes to move. Which equation can be solved to find how many boxes Leroy moved before his break?
Answer:
15 - x = 34
Step-by-step explanation:
What is 23.3 divided by 119?
What is 11 divided by 3
PLS HELP!!!!!
Which pair of fractions shows 5/6 and 3/8 correctly converted with their least common denominator? A. 5/48 and 3/48 B. 40/48 and 18/48 C. 5/24 and 3/24 D. 20/24 and 9/24
PLS HELP!!!!!
Chris wants to order DVD’s over the internet.Each dvd cost $15.99 and shipping the entire order costs $9.99.If he can spend no more than $100,how many DVD’s could he buy (please so all work)
Answer: There are 3 DVD s that can be bought with under $100.
Step-by-step explanation:
Since we have given that
Cost of DVD = $15.99
Cost of Shipping = $ 9.99
Total cost per DVD would be
$15.99 + $9.99 = $ 25.98
Amount he has to spend no more than $ 100.
So, number of DVDs would be
100 ÷ 25.98 = 3.84
Hence, there are 3 DVD s that can be bought with under $100.
Chris can order 3 DVDs over the internet, if he spent $100.
Given here,
Cost of DVD = $15.99
Shipping Cost = $ 9.99
Amount spend = $ 100.
Total cost per DVD,
$15.99 + $9.99 = $ 25.98
So, number of DVDs would be buy,
100 ÷ 25.98 = 3.84
Therefore, Chris can order 3 DVDs over the internet, if he spent $100.
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Chase answers 3/4 of his math questions correctly. There were 40 questions on the test.
a. How many did he get right?
b. How many did he miss?
I need the answer to RACING in Blue
Thanks
HELP ME PLEASE!!!!!!!! Evaluate. 2⋅(5855)
The explanation provides a step-by-step process to determine the minimum trips required for the miners to cross the river.
To determine the minimum number of trips required for the miners to cross the river, we need to carefully consider the constraints given.
First, A and B can cross together because the maximum combined weight of their cargoes is 90 kg (40 + 50) which is less than 100 kg.
Then, A returns alone, carrying B's cargo, leaving B and C on the other side. B and C cross together as the combined weight of their cargoes is 40 kg (20 + 20) which is less than 100 kg.
Finally, B returns and takes A's cargo, crossing with C's cargo. In total, the minimum number of trips needed is 9 (Option A).