evaluate 13+ab,when a= 2.5 and b=3.
19= X+5*Z-12
what is X and Z?
Answer:
X = -5Z + 31
Step-by-step explanation:
Subtract 5Z5Z from both sides.
19 - 5Z = X - 12
19 − 5Z = X − 12
2 Add 1212 to both sides.
19 - 5Z + 12= X
19 − 5Z + 12= X
3 Simplify 19-5Z+1219−5Z+12 to -5Z+31−5Z+31.
-5Z + 31 = X
−5Z + 31 = X
4 Switch sides.
X = -5Z + 31
X = −5Z + 31
Answer:
19=x+5*z-12
19+12=x+5*z
31=x+5*z
then x=26 z=1
i give brainiest how do i multiply 5/6 x 4/6
Answer:
Multiply the numinators together then the denominators. Answer 20/36 then simplify. Hope this helps :)
Step-by-step explanation:
OOops, answered the wrong question-
5/6 x 4/6 = 20/36 as simplified as 5/9 in fraction form.
Step 1
Multiply both numerators
= 5 x 4
= 20
step 2
Multiply both denominators
= 6 x 6
= 36
step 3
Use above values of step 2 & 3, and rewrite as below
= 20/36
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP AND NI FILES
I hate files that give you viruses, anyways I'm going to do this question.
Though, can you give me more information please?
Answer:
Melinda saves 2 less dollars than Marcus each week.
Step-by-step explanation:
Y = 12x + 75 is Melinda's equation. Y = 14x + 25 is Marcus's equation. First we'll disregard how much money they have saved already to see how much they save weekly. So Melinda's new equation is Y = 12x, and Marcus's new equation is Y = 14x. Now we'll do Marcus's equation (14x) - Melinda's equation (12x) to see how much more money Marcus saves each week, which will in turn will tell us how much less money Melinda saves each week.
14 x - 12x = 2. (x-x=0) This tells us Marcus saves 2 more dollars than Melinda each week.
Which gives us our answer, Melinda saves 2 less dollars than Marcus each week.
A summer camp cookout is planned for the campers and their families. There is room for 200 people. Each adult costs $4, and each camper costs $3. There is a maximum budget of $750. Write the system of inequalities to represent this real-world scenario, where x is the number of adults and y is the number of campers. x + y ≤ 200 4x + 3y ≤ 750 x + y ≤ 750 4x + 3y ≤ 200 x + y ≤ 200 3x + 4y ≤ 750 x + y ≤ 750 3x + 4y ≤ 200
Answer:
I think its A
Step-by-step explanation:
The required system of inequalities is x + y ≤ 200 and 4x + 3y ≤ 750. Hence, the first option is the correct choice.
What is inequality?Inequality is a non-equal relation between two expressions involving variables and constants.
The sign of the inequality can be, less than (<), greater than (>), less than or equal to (≤), or greater than or equal to (≥).
How to solve the question?In the question, we are asked to write the system of inequalities to represent the given scenario, where x is the number of adults and y is the number of campers.
We are informed that there is a room for 200 people.
Thus, the total number of people, that is, the number of adults + the number of campers, or, x + y should be less than or equal to 200.
This gives us an inequality:
x + y ≤ 200.
We are informed that the cost of an adult is $4 and the cost for a camper is $3, and the total budget is $750.
Thus, the total cost, that is, the cost of all adults + the cost of all campers, or, 4x + 3y should be less than or equal to 750.
This gives us an inequality:
4x + 3y ≤ 750.
Thus, the required system of inequalities is x + y ≤ 200 and 4x + 3y ≤ 750. Hence, the first option is the correct choice.
Learn more about writing inequalities at
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Is the sequence arithmetic, geometric or neither? Then, find the next three terms. 0, 3, 6, 9, 12, ___, ___, ____
Answer:
arithmetic (+3)
15, 18, 21
Step-by-step explanation:
Answer:
15,18,21
Step-by-step explanation:
What is 4 3/10 plus (-6.2) in decimal form
Answer:
Step-by-step explanation:
First change 4 3/10 to 4.3. Then you change 4.3 + -6.2 to 4.3 - 6.2.
Then you do 4.3 - 6.2 and you should get - 1.9.
Answer:
The answer is (-1.9)
Step-by-step explanation:
4 3/10 = 4 × 10 + 3/10 = 43/10 = 4.3
Now,
4.3 - 6.2 = -1.9
Thus, The answer is (-1.9)
-TheUnknownScientist 72
How do i find a mean in a data set?
Answer:
Add them all up then divided by how many numbers there are
Step-by-step explanation: :)
Answer:
How do you find the mean?
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
Step-by-step explanation:
How can I improve my skills in math?
Answer:
You can practice a lot and reliable resources to help get answers.
Step-by-step explanation:
a couple of sites to practice on is IXL, khan academy, and aleks. hope this helps. :)
Four friends purchase a pineapple for $2.89 and 18.4 pounds of peaches. The peaches cost $1.75 per pound. The friends share the total cost equally.
What amount does each person pay?
Answer: $3.00
Step-by-step explanation:
Answer:
$8.77
Step-by-step explanation:
18.4 pounds x $1.75 = $32.2
After that we add the pineapple cost
$32.2 + $2.89 = $35.09
So now we for the 4 friends
$35.09/4 = $8.77
Done the first two but i dont know how to do the mean of it
To find mean:
1) Add up all data values to get the sum
2) Count the number of values in your data set
3) Divide the sum by the count
First we have to find all the data values. We do this by finding all of the peas, not just the information numbers of peas in a pod.
4 x 2 = 8
5 x 10 = 50
6 x 18 = 108
7 x 14 = 98
8 x 6 = 48
8 + 50 + 108 + 98 + 48 = 312 total number of peas
2 + 10 + 18 + 14 + 6 = 50
312 / 50 = 6.24 peas per pod
So in our example the mean number of peas in a pod is 6.24.
I hope this helps! :)
The mass of 1 L of water is 1 kg. The mass of gasoline is 0.68 times the mass of water. What is the mass of the gasoline in a full tank that holds 75 L.
Hence, the mass of the gasoline in a full tank that holds [tex]75L[/tex] is [tex]680[/tex]grams.
What is the mass?
Mass refers to the quantity of matter in an object. Mass is generally measured by how much something weighs. The more matter something has, the more it will weigh.
Here given that,
The mass of [tex]1[/tex] L of water is [tex]1[/tex] kg. The mass of gasoline is [tex]0.68[/tex] times the mass of water.
As we know,
[tex]1L=1000ml[/tex]
So, [tex]0.68[/tex]×[tex]1000=680grams[/tex]
As per this the mass of water is greater than the mass of gasoline.
Hence, the mass of the gasoline in a full tank that holds [tex]75L[/tex] is [tex]680[/tex]grams.
To know more about the mass
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The sum of the interior angles of any triangle is equal to:
A. 90°
B.120°
C. 180°
D.240°
E. 360°
PLEASE give me the answer im really stuck and tried so many times this is for a grade!! Thanks :)
The answer is c. 180
Why is taking a census better than taking samples in a survey?
4 pounds of grapes cost $5. 7 pounds of grapes cost $8.75. What is the cost per pound?
Answer:
$1.25 per pound
Step-by-step explanation:
$5 ÷ 4 = $1.25
$8.75 ÷ 7 = $1.25
Determine the number of solutions in this equation:
5x + 3 - 3x = 2 ( x + 3 ) - 5
Answer:
No solutions
Step-by-step explanation:
2x+3=2x+6-5
2x+3=2x+1
The two x's cancel out, so you get
3=1
Subtract 3 from each side to get
0=-2
So the answer is no solutions
The trip from Carville to Planesborough takes 4 1/2 hours when traveling at a constant speed of 70 miles per hour. How long, in hours, does the trip take when traveling at a constant speed of 60 miles per hour?
Answer:
5h 15 min
Step-by-step explanation:
70 mph * 4,5 = 315 miles
315 / 60 = 5,25h
5,25h = 5 1/4h = 5h 15 min
Answer:
6.8
Step-by-step explanation:
i hope tis helps
Linda is comparing the density of materials. The redwood is 2x10^ -2 pounds per cubic unit. The stainless steel is 3 x 10^ -3
Answer:
Step-by-step explanation:
5x10
I need help with this
Answer: 2.5
Step-by-step explanation: to find the unit rate/slope we need to pick 2 points and subtract the y's and x's
i picked (2, 5) and (1, 2.5)
5 - 2.5 = 2.5
2 - 1 = 1
2.5/1 = 2.5
2.5 is the slope
Answer:
1.25 I think
Step-by-step explanation:
CANUHELPMEPLAESE PLZ
Answer:
The answer is 8$ less
Step-by-step explanation:
find 15% of 40 = 6 and 35% of 40 = 14
Subtract 6 from 40 and 14 from 40
get 34 and 26
subtract 26 from 34
taadaa
Write an equation in slope intercept form for the graph of the line.
Answer:
y = mx + b
Step-by-step explanation:
A boat went downstream and traveled a distance in 3 hours. the return took 3 hours and 40 min. find the speed of the water current of the speed of the boat in still water is 18
Answer:
Step-by-step explanation
:
PLS ANSWER ASAP MEANING RIGHT NOW ;-; i'm losing brain cells
Suppose Enrique has two building blocks. The area of one face of one of the blocks is 4 square centimeters and the area of the face of the other block is 100 square centimeters. What is the scale factor from the smaller block to the larger block?
Answer:
I think the larger block has a scale 25 times bigger than the smaller block since 100 divided by 4 equals 25
Please tell me if I'm wrong
I hope this helps
:D
Answer:
The Scale factor is 5.
Step-by-step explanation:
Because the area has cm^2 to find the scale factor you find the number it takes to get from one area to the next and take the square root.
4X = 100
X = 100/4
X = 25 (Take the sqrt because of area)
X = sqrt(25)
X = 5
The Scale factor is 5.
i need help please....
Answer:x=-7
Step-by-step explanation:
If the perimeter of a regular pentagon can be expressed as 10s - 20, determine the length of each side.
50 s - 100
5 s - 10
s - 2
2 s - 4
pleaze hurry
Answer:
50 s - 100
Step-by-step explanation:
Answer:
50 s - 100
Step-by-step explanation:
please help me thanksssssss
Answer:
your welcomeeeeeeeeeeee
Step-by-step explanation:
:)
The sum on both sides need to be equal to be balanced. Because the right side is being multiplied then also multiply the left side.
Answer: 3rd choice: f1 x d1
What is the value of the expression when c=0 and d=-6 ?
cd-d2/4
Answer:
-9
Step-by-step explanation:
This what you wrote:
[tex] cd - \dfrac{d^2}{4} = [/tex]
[tex] = (0)(-6) - \dfrac{(-6)^2}{4} [/tex]
[tex] = 0 - \dfrac{36}{4} [/tex]
[tex] = -\dfrac{36}{4} [/tex]
[tex] = -9 [/tex]
Maybe this is what you meant to write:
[tex] \dfrac{cd - d^2}{4} = [/tex]
[tex] = \dfrac{(0)(-6) - (-6)^2}{4} [/tex]
[tex] = \dfrac{-36}{4} [/tex]
[tex] = -9 [/tex]
Can someone answer this for me?
Answer:
24.75
Step-by-step explanation:
divide 33.00 by 4 and multiply the sum by 3
Answer:
57.75
Step-by-step explanation:
Which expression is equivalent to 4( x + 3)?
Answer:
B.
Step-by-step explanation:
use distributive property
4*x + 4*3 = 4x+12
Answer:
4x + 12
Step-by-step explanation:
If you distribute the 4 by multiplying then its 4 times x so 4x
plus 3 times 4 so 12! Hope this helps ( :
how do I do 6,413-764 show your work, I will give brainliest
(I'm in middle school but i have long term memory and I forget how to do subtraction please help me)
Answer:
the answer is 5649
Step-by-step explanation: