Answer:
5 - 1 = 4
Step-by-step explanation:
Find the missing number
45-9=46-
The answer is 10 because 45-9 is 36, so 46-x must be 36, which would result in 10
At midnight the temperature is -6°C. At midday the temperature is 9°C. By how much did the temperature rise?
Answer:
15 degrees
Step-by-step explanation:
It went from -6 to 0 which is 6 degrees of change then from 0 to 9 degrees which is 9 degrees of change 9+6=15
The amount of temperature that has been increased from midnight to midday is 15°C.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Midnight temperature = -6°C
Midday temperature = 9°C
The difference between the temperature.
= 9 - (-6)
= 9 + 6
= 15°C.
Thus,
The temperature is raised by 15°C.
Learn more about expressions here:
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I need help please and thank you
(A AND B ARE NOT ANSWERS THEY ARE SEPARATE PROBLEMS)
Answer:
Part a) Wayne's savings before he spent $28 was $31.08
Part b) Stef's savings after she spent $28 was $9.29
Step-by-step explanation:
Part a)
Let
x ----> original amount of Wayne's savings
y ----> original amount of Stef's savings
we know that
Original ratio
[tex]\frac{x}{y}=\frac{5}{6}[/tex]
[tex]x=\frac{5}{6}y[/tex] ----> equation A
After spending $28 each
[tex]\frac{x-28}{y-28}=\frac{1}{4}[/tex]
Multiply in cross
[tex]4x-112=y-25\\y=4x-112+25[/tex]
[tex]y=4x-87[/tex] ----> equation B
substitute equation A in equation B
[tex]y=4(\frac{5}{6}y)-87[/tex]
solve for y
[tex]\frac{20}{6}y-y=87[/tex]
[tex]\frac{7}{3}y=87[/tex]
[tex]y=37.29[/tex]
Find the value of x
[tex]x=\frac{5}{6}(37.29)=31.08[/tex]
so
The original amount of Wayne's savings was $31.08 and the original amount of Stef's savings was $37.29
therefore
Wayne's savings before he spent $28 was $31.08
Part b) Find Stef's savings after she spent $28
Subtract $28 from the original savings
so
$37.29-$28=$9.29
therefore
Stef's savings after she spent $28 was $9.29
Movies are on sale for 1/4 the original price. If the original price is $20, which expression gives the sale price?
10. A student studied 18 hours in 7 days, if he wants to study average 2 hours each day for 14 days. How many hours he needs to study for next 7 days?
Answer:
2 x 14 = 28
28 - 18 = 10
He needs to study for 10 hours that week or, about one and half hours per day.
Write an expression in simplest form to represent the area of the shaded region
3x+2 2x 3x 4x
The high temperature on Monday was -14 F.on Tuesday the high temperature was 24 F. What is the difference in high temperatures on theses 2 days
What is wrong with this solution?
-5m - 16 = 19
5m - 16 + 16 = 19 + 16
Step One:
Step Two:
Solution:
m = 7
Final answer:
The solution shown is incorrect because the equation is not simplified before performing operations.
Explanation:
The solution shown is incorrect. Let's go step by step to find the error:
Step One: -5m - 16 = 19
Step Two: 5m - 16 + 16 = 19 + 16
Step Three: 5m = 35
Step Four: Divide both sides by 5: m = 7
The mistake in the solution occurs in Step Two. The previous equation should be simplified to 5m = 35 before dividing by 5. The addition of 16 on both sides should be taken care of first by canceling it out, resulting in 5m = 35 instead of 5m + 0 = 35.
Therefore, the correct solution is m = 7.
Final answer:
The solution to the equation -5m - 16 = 19 is m = -7, not m = 7. The student initially misplaced the sign after dividing by -5.
Explanation:
The student has made a mistake in the initial steps of solving the equation -5m - 16 = 19. The correction process involves isolating the variable m on one side of the equation to find its value.
Step One
Add 16 to both sides of the equation to eliminate the -16:
-5m - 16 + 16 = 19 + 16
-5m = 35
Step Two
Divide both sides by -5 to solve for m:
-5m / -5 = 35 / -5
m = -7
The correct solution is m = -7, not m = 7. It is important to follow the addition rules and subtraction rules carefully and to remember to divide by the coefficient of m, which in this case is -5, resulting in changing the sign of the solution.
What is the scale factor on the map (10 points
Answer:
2785
Step-by-step explanation:
Eden spent half of her weekly allowance on candy. To earn more money her parents let her weed the garden for $5. What is her weekly allowance if she ended with 12?
Answer:
her weekly allowance would be 7
Step-by-step explanation:
Answer:
$24
Step-by-step explanation:
12 is 1/2 of 24.
So, when she weeds the garden, she will have $17.
If she gets her weekly allowance and the $5, she will have $41, assuming she doesn't spend any of the money she already has.
d - 10 - 2d + 7 = 8 + d - 10 - 30
Answer:
[tex]d=14.5[/tex]
Step-by-step explanation:
Given equation:
[tex]d - 10 - 2d + 7 = 8 + d - 10 - 30[/tex]
To solve the equation for 'd', take the terms of 'd' to one side and the constants to the other side.
[tex]d - 2d - d = 8 - 10 - 30- 7+10[/tex]
[tex]-2d=8-30-7\\-2d=1-30\\-2d=-29\\ d=\frac{29}{2}\\ d=14.5[/tex]
On, solving the equation the value of 'd' is [tex]d=14.5[/tex]
Find two consecutive even integers whose sum is 30
Answer:
14 & 16
Step-by-step explanation:
30÷2=15
15+15=30, so we can make the conclusion...
14+16=30
Max spent 35 minutes doing research on the internet. She finished at 7:10 P.M. At what time did max start her reserch
Answer:
6:35
Step-by-step explanation:
Answer: 6:35
Step-by-step explanation:
7:10 take 10 from 35 and you get down to 7:00 and then subtract 25 from 7:00 and get your answer
-2 square root 20- square root 125
Answer:-5.93958251....
Step-by-step explanation:
To simplify the expression -2√20 - √125, we first factored the square roots, realizing that √20 equals 2√5 and √125 equals 5√5. Plugging these back into the equation, we then combined like terms to get the final answer of -9√5.
The question asks to simplify the expression -2√20 - √125.
First, let's simplify the square roots by factoring out squares from under the radical:
√20 = √(4×5) = √4√5 = 2√5√125 = √(25×5) = √25√5 = 5√5Now let's substitute these simplified forms back into the original equation and simplify:
-2(2√5) - 5√5 = -4√5 - 5√5
Combine like terms to get the final simplified result:
-9√5
complete question given below:
simplify -2 square root 20- square root 125
I had 20 dollars and earned 15, leaving me with 35. What is the percent that it increased in pay?
Answer:
42.8%
Step-by-step explanation:
I asked Alexa lol
Answer:
The answer is 40%
Step By Step Explanation:
The reason why is because if you do 10 divided by 25 you get 0.40 and then if you multiply it you get 40 = 40%
The length of a rectangle is 2 units more than the width. The area is 63 units. What is the width, in units, of the rectangle?
Answer:
the width is 7. i just did this in deltamath
Step-by-step explanation:
The green dots must make up a triangle 1/3 of the original picture PLZ HELP
Consider Point P to be (0,0) count the grid lines to find the location of points A, B and C
A=. (-6,-3)
B = (-9,6)
C =(3,9)
Now the scale is 1/3. So divide all the points by 3 to get the new location and place the green dots on them:
A’=(-2,-1)
B’ =(-3,2)
C’ =(1,3)
You received an order for a 28-day supply for Propranolol HCI 120mg tablets po q.i.d. to prevent post M I reinfection How many tablets will be dispensed for the 28-day supply?
112 tablets will be dispensed for the 28-day supply.
Step-by-step explanation:
Given:
Received an order of 120 mg tablet po q.i.d. for a 28-day supply.
Here in medical prescription, the term 'po' and 'q.i.d' means a lot to understand the question.
In medical prescription, the term 'po' refers the treatment that should be taken orally. i.e. by opening mouth or the way of openingIn medical prescription, the term 'q.i.d' refers four times in a day.Therefore, to find the number of tablets need to be dispensed for 28- day supply is given by,
[tex]number\ of\ the\ tablet\ for\ 28- day \times number of tablets taken in a day =28 \times 4[/tex]
tablets to be dispensed for the 28-day supply = 112 tablets.
3. You want to leave a tip for a meal that
costs $17.95. If all you have is $3.00, what
percentage tip will you be able to leave?
Answer:
17%
Step-by-step explanation:
3/17.95 = 0.167
0.167 × 100 = 16.7 *rounding to 17
12.95 × 0.17 = 3.0515
an elephant eats about 2500 pounds of food in 10 days. About how muck food does an elephant eat in 1000 days
Final answer:
An elephant that eats about 2500 pounds of food in 10 days would eat approximately 250,000 pounds in 1000 days. You find this by dividing 2500 pounds by 10 to get a daily consumption rate and then multiply that rate by 1000 days.
Explanation:
If an elephant eats about 2500 pounds of food in 10 days, to find out how much food it eats in 1000 days, you should first calculate how much it eats per day and then multiply that number by the total number of days (1000). To find the daily food consumption, you divide the total food consumed in 10 days by the number of days:
2500 pounds ÷ 10 days = 250 pounds per day.
Now multiply the daily consumption by 1000 days to find the total amount for that period:
250 pounds per day × 1000 days = 250,000 pounds.
So the elephant would eat approximately 250,000 pounds of food in 1000 days.
For what value of x is the rational expression below equal to zero?
X-4/x-6
Answer:
Step-by-step explanation:
When x equals to 4
4-4 = 0
-------------
4-6 = -2
0/-2 = 0
The rational expression X-4/x-6 equals zero when X equals 4, as long as the denominator is not zero, which avoids division by zero.
The question asks: For what value of x is the rational expression below equal to zero? The expression given is X-4/x-6. To find when this expression is equal to zero, we need to understand that a rational expression equals zero when its numerator is zero (and the denominator is not zero, to avoid division by zero).
To solve X-4 = 0, we simply add 4 to both sides of the equation, getting X = 4. This means that the rational expression is equal to zero when X equals 4, given that X is not equal to 6 to avoid making the denominator zero, which would be undefined. Hence, the value of X that satisfies the condition is 4.
29+x+41=90 and 113-y=90
29+x+41 = 90
x+70 = 90 ..... combine like terms
x+70-70 = 90-70 .... subtract 70 from both sides
x = 20 answer---------------------------------------
113 - y = 90
113 - y = 90 - 113 ... subtract 113 from both sides
-y = -23
y = 23 answer
Chang drove 315 miles in 5 hours.
At the same rate, how long would it take him to drive 567 miles?
I hours
Answer:
AROUND 6-7 HOURS
Step-by-step explanation:
use the completing the square method to solve the equation x^2 + 16x + 2.
x = - 0.12 or - 15.87
Step-by-step explanation:
Step 1: Divide the equation with the coefficient of [tex]x^{2}[/tex]. In this case, coefficient of Step 2: Move the number term to the right hand side of the equation. Now, the equation becomes [tex]x^{2} + 16x = -2[/tex]Step 3: Complete the square in the left hand side of the equation and then add the same number to the right hand side to balance the equation. Now, equation becomes [tex]x^{2} +16x+64 = -2+64[/tex] So, [tex]x^{2} +16x+64 = 62[/tex] [tex]ie, (x+8)^{2} = 62[/tex] Step 4: Take the square root of both sides. Therefore, [tex]x+8 = \sqrt{62}[/tex] So, [tex]x =[/tex] ± [tex]7.87 - 8[/tex]Therefore, [tex]x = -0.12, -15.87[/tex]
Solve the equation for y plz -1.2y-4.2y=-3.78
Answer:
y=0.7
Step-by-step explanation:
-1.2y-4.2y=-3.78
Simplify:
-5.4y=-3.78
5.4y=3.78
3.78/5.4=0.7
y=0.7
Find the missing side length of S
Answer:
s=12
Step-by-step explanation:
Since we know that triangle ABC is similar to XYZ, we know that the side lengths will be proportional to one another. As such, we should take a ratio to determine the side length of s.
[tex]\frac{XY}{AB}=\frac{XZ}{AC}\\\\\frac{9}{6} =\frac{s}{8}\\\frac{8*9}{6} =s\\s=72/6=12\\s=12[/tex]
the sum of 7 times a number and 9 is 4
What is 4 equal expressions to 4(2x^2+16)
Answer:
8x^2+64
Step-by-step explanation:
A principle of $20,000 is invested at $6.25 and earns $10,000 simple interest how long has the money been invested
Answer:
1600
Step-by-step explanation:
Assuming $6.25 is the interest earned annually,
Let n be the no. of years
Then,
6.25 × n = 10000
n = 10000/6.25
n = 1600
Solve for y.
2(-4y + x) = 4
Answer:
Step-by-step explanation:
-4y + X = 2
-4y = 2 - x
y = 2 - x/ -4
hope this helps!!
The value of y in terms of x is -1/2 + x/4.
To solve for y, we start with the equation 2(-4y + x) = 4.
Distribute the 2 inside the parentheses: -8y + 2x = 4.
Move the term with x over to the other side by subtracting 2x from both sides: -8y = 4 - 2x.
Isolate the y by dividing both sides by -8: y = (4 - 2x) / -8.
Simplify the right side by dividing both terms by -8: y = -1/2 + x/4.