Dany bought a total of 20 game cards some of which cost $0.25 each and some of which cost $0.15 each. If dany spent $4.20to buy these cards,how many cards of each type did he buy?
Answers
For this case we have to:
x: Represents the $ 0.25 game cards
y: Represents the $ 0.15 game cards
We have then:
From the second equation we have:
Substituting in the first equation:
So, I buy 8 game cards for $ 0.15
On the other hand we have:
So, I buy 12 game cards for $0.25
Answer:
Buy 8 game cards for $0.15
Buy 12 game cards for $0.25
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Lennon has a checking account.He withdrew $130 from an ATM Tuesday.Wednesday he deposited $240.Friday he wrote a check for $56.What was the total change in lennons account?
On the first of each month, Stacie runs a 5k race. She keeps track of her times to track her progress. Her time in minutes is recorded in the table: Jan 41.55 July 36.38 Feb 42.51 Aug 38.48 Mar 43.01 Sept 41.87 Apr 39.76 Oct 51.32 May 37.32 Nov 42.59 June 35.28 Dec 43.71 Determine the difference between the mean of the data, including the outlier and excluding the outlier. Round to the hundredths place. 1.21 0.93 40.98 40.22
Hannah has a grid of squares that had 12 rows with 15 squares in each row. She colors 5 rows of 8 squares in the middle of the grid blue. She colors the rest of the squares red. How many squares does Hannah color red?
Answers
Answer:
x<-3
Step-by-step explanation:
- given, 4 - 3x > 13
adding 3x on both sides,
4>13+3x
subtracting 13 from both sides,
4-13>3x
-9>3x
dividing both the sides by 3,
-3>x
therefore solution: x<-3
- the required graph is shown in the attachment
- so any x value lesser than -3 satisfies the inequality. [ y can be any value]
- since you have asked about which number line, take y=0 and then it will be x-axis with values lesser than -3. this is the required number line.
A. Transitive Property
B. Multiplicative Identity
C. Communicative Property of Multiplication
D. Reflexive Property
Answers
Answer:
A. Transitive Property
Answers
so in 2 quarts, 2 × 2 = 4 pints
4 pints are there in 2 quarts.
-2(8/-10)-5=8(8/-10)+3
Answers
You have to do the parentheses first for each side of the equation.
-2 * (8 / -10) - 5 = 8 (8 / -10) + 3 ==> -2 * -0.8 - 5 = 8 * -0.8 + 3
Now, we do the multiplication of both sides.
-2 * -0.8 - 5 = 8 * -0.8 + 3 ==> -1.2 - 5 = -6.4 + 3
Finally, we do the addition and subtraction on both sides.
-1.2 - 5 = -6.4 + 3 ==> -6.2 = -3.4
-6.2 = -3.4 is false.
Hope this helped!! ☺♥
Answers
624 divided by 12 equals 52
answer:
52 dozens
Final answer:
Given a stock of 624 eggs and knowing 1 dozen equals 12 eggs, there are 52 dozen eggs in the store.
Explanation:
The subject of this question pertains to Mathematics, specifically a real world application of division. In the given query, a grocery store only sells eggs by the dozen, meaning twelve eggs. The store has in stock, 624 eggs. The task is therefore to determine how many dozens make up this total number of eggs available.
To find the answer, we divide the total number of eggs by the number of eggs in one dozen. That is 624 (total number of eggs) divided by 12 (number of eggs in a dozen). This equals 52 dozens. Thus, the grocery store has 52 dozens of eggs in stock.
Learn more about Division here:
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Answers
treat as equaiton, but flip sign when dividng or muliplying by negaitve
isolate x
first distribute
7+3x<8(3+x)
7+3x<24+8x
minus 3x both sides
7<24+5x
minus 24 both sides
-17<5x
divide both sides by 5
-17/5<x