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jeka94
3 years ago
11

Nathan has two types of stamps:

Mathematics
1 answer:
Maurinko [17]3 years ago
4 0
A. He could use 5 of the 8<span>¢ Stamps 
    He could use 10 of the 4</span><span>¢  Stamps 

B. You can be sure that you have found all of the possible combinations because those are the only sets of those specific numbers that equals 40</span><span>¢ <span>

C. If Nathan used 40</span></span>¢ worth of stamps in postage, given that 40¢ is all that Nathan is willing to spend, he would have only used the 8¢ variety of the stamps he owns. You can explain this reasoning in the fact that 8 x 5 = 40 and he spends 40<span>¢.</span>
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Y = x² + 7x - 5 Can be written in the form y = ( x + a )² + b. Find the value of a and the value of b.
Mamont248 [21]

Answer:

a=\dfrac{7}{2} \\\\b=\dfrac{49}{4} \\

Step-by-step explanation:

y=x^2+7x-5\\\\=x^2+2*\dfrac{7}{2}*x +\dfrac{49}{4} -\dfrac{49}{4} -\dfrac{20}{4} \\\\=(x+\dfrac{7}{2} )^2+\dfrac{69}{4} \\\\a=\dfrac{7}{2} \\\\b=\dfrac{49}{4} \\

8 0
2 years ago
Recipe calls for 2 parts grape juice and 6 parts water. Make 80 ounces of grape drink. How many ounces of grape juice and ounces
Marysya12 [62]
First, see how many parts in total (6+2=8) then divide 80 by 8 which is ten. you then know that each part must be 10 ounces so 2 parts becomes 20 ounces of grape juice and 6 parts becomes 60 ounces of water
5 0
3 years ago
In a ten pin bowling the highest possible score in a single game is 300. At one point in the season, John had an average score o
Sindrei [870]

Answer:

John need to get 293 in his next game to bring his average up to 183.

Step-by-step explanation:

John starts with N games played and averaging 177 points per game.

In game N+1, John scored 199 points.

\frac{177N + 199}{N+1}=178\\177N+199=178N+178\\N=21\\

So, John has now played (N+1) = 22 games.

We need to know what score John needs in game 23 to bring his average to 183.

\frac{177*21 + 199+Y}{23}=183\\3916+Y=4209\\Y=293\\

8 0
2 years ago
I need some help please
zvonat [6]
10 x 10 = 100  80 x 80 =6400 6400-100= 6300 so that would have to be  3150ft.

5 0
3 years ago
I don’t understand how to get the answer
vesna_86 [32]
128.1 / 92.5 * 100 = 140%
6 0
3 years ago
Read 2 more answers
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