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ololo11 [35]
3 years ago
12

MissSmartiez, when you're done please answer these questions.:)

Mathematics
2 answers:
BabaBlast [244]3 years ago
7 0
The first one is number 2 the second one is 185.(could you also say what is in the drop down menu for the third one. The last one is Part A is 376 and part B is 1,3,4.Hoped it helped a bit :)
Alex_Xolod [135]3 years ago
4 0
First attachment:
Indication words: each, gives, left.
> Each indicates multiplication
> left and gives indicate subtraction.

''5 packs obtains 4 cards each. 3 cards are given away,'' translates to 5 * 4 - 3

Therefore B = 5 * 4 - 3

Second attachment: 
Indication words: more, gives.
> More signifies addition 
> Gives signifies subtraction.

 The equation would be 229 + 35 - 149 = ?

Use PEMDAS. Note that you do addition first since it's before subtraction when we read this equation question left to right. 
229 + 35 - 149 = ? ⇒(229 + 35) - 149 = ? ⇒ 264 - 149 = 115; ? is 115

Answer: 115

Third attachment: 
I cannot answer; I don't know the choices in the choose boxes. 

Fourth attachment: 
You are incorrect for Part A. Raising 9 dollars EACH (*) day for a week (7 days) translates to, in mathematical terms, 9 * 7. 9 multiplied by 7 equals 63. 
The goal was to get to 439 dollars. If they have 63, how much MORE (+) do they need? To solve this, we do inverse operations of addition which is subtraction. Take 439 and subtract it by 63. 439 - 63 = 376. Check our work: 376 + 63 = 439? Yes. 

In conclusion the answer for Part A is A; $376.  

Part B - 
Answer 1: 9 book covers (9 * 8 = 72 ) + 1 calculator (1 * 9 = 9) = 81. Do not check this off because the result is not exactly 80.
Answer 2: 1 binder (1 * 4=4) + 8 calculators (8 * 9= 72) = 76. Do not check this off because the result is not exactly 80.
Answer 3: 1 book cover (1 * 8 = 8) + 8 calculators (8 * 9 = 72) = 80. Check this because the result is exactly 80.
Answer 4: 7 calculators (7 * 9 = 63) + 1 stapler (1 * 17) = 80. Check this because the result is exactly 80.

Answer 3 and 4 are correct in summary. 
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She wants to create a rectangular area of 1,600 square feet for her pet and can afford to purchase 160 feet of fence. In two or
kap26 [50]

Answer: x = 40  and  y = 40

Step-by-step explanation:

We can write the equation for the area as: x*y = 1600

We can write the equation for the perimeter as: 2x + 2y = 160

An easy way to solve a question like this is to graph both equations on a graphing calculator, if you don't have one on you you can use Desmos

Graph both: y = 1600/x

                             and

                     y =  80 - x

Turns out you get x = 40 and y = 40

8 0
2 years ago
What is -4-4 (n-3) = 16
Ilia_Sergeevich [38]
Is n= -2 ..............
4 0
3 years ago
A scientist needs 10 liters of a 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the
tamaranim1 [39]

Answer:

The volume of 40% solution= 4.3L

The volume of 5% solution= 10L - 4.3L= 5.7L

Step-by-step explanation:

From the given information:

Let consider  x to be the of volume 40% solution

therefore the volume of 5% is said to be:

10 L= 40% solution volume + 5% solution volume

10 L= (x + 5%) solution volume

making 5% solution volume the subject; we have

5% solution volume= 10 L - x

To estimate the value of the volume, we now have:

Volume  of 20% × Concentration of  20%= (Volume of 40%  × concentration40%) + (Volume of 5% × Concentration of 5% )

∴

10L  ×  20%= (x) L × 35% + 10 L × 5%

(x) L × 35 = 10L × 20 - 10 L × 5 = 10 L × 15

x L = 10L \times \dfrac{15}{35}

x = 4.28 L

x \simeq 4.3L

∴

The volume of 40% solution= 4.3L

The volume of 5% solution= 10L - 4.3L= 5.7L

8 0
3 years ago
Which quantity is proportional to 40⁄8?
storchak [24]

Answer:

the answer is not on here but it is 5 other than that it might be 5/1.

so D

and B.

Step-by-step explanation:

4 0
3 years ago
Roberto wants to display his 18 sports cards in an album. Some pages hold 2 cards and others hold 3 cards. How many different wa
Amiraneli [1.4K]
Let x = number of pages holding 2 cards,
y = number of pages holding 3 cards.

So his total number of card would be 2x + 3y, which is given as 18. So we get this equation.

2x + 3y = 18

Subtract 3y from both sides:

2x  = 18 – 3y

Divide both sides by 2:

x = (18 – 3y)/2

x must be an integer. So 18–3y must be a multiple of 2. Since 18 is a multiple of 2, 3y is also a multiple of 2. Then y must be a multiple of 2 too.

Let's start with y = 0.
When y = 0, x = (18 – 3(0))/2 = 9.
When y = 2, x = (18 – 3(2))/2 = 6.
When y = 4, x = (18 – 3(4))/2 = 3.
When y = 6, x = (18 – 3(6))/2 = 0.

Thus there are 4 ways to display his figures.

3 0
3 years ago
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