MATHEMATICS MIDDLE SCHOOL

One-half cup of black beans provides 15% of the potassium you need daily. You must get the remaining 2890 milligrams from other sources.

Answers

Answer 1

Answer:

Answers:

The amount of potassium from black beans is 510 mg

The total amount of potassium needed daily is 3400 mg

Explanation:

1- getting the total amount of potassium needed daily:

Assume that the total amount needed daily is x

We know that:

We can get 15% of the potassium needs from half a cup of black beans.

This means that:

remaining amount = 100% - 15% = 85%

We are given that the remaining amount is 2890 mg, therefore:

85% x = 2890 mg

0.85x = 2890 mg

x = 3400 mg of potassium

2- getting the amount of potassium in black beans:

We know that:

one half of a cup provides 15% of the daily needs

We have calculated that:

Total daily need = 3400 mg

Therefore:

half a cup would provide = 15% * 3400

half a cup would provide = 0.15 *3400

half a cup would provide = 510 mg of potassium

Hope this helps :)

Answer 2

Answer: not 100% sure on what you are asking but i think i got it. If you are looking for the amount of K (potassium) in milligrams then you need to first know that 85%=2890 milligrams. if you divide 2890 by 17 you get 5%=170 mg. multiply this by 3 to get 15%=510 mg. so one half cup of black beans has 510 milligrams of K. the total amount of K needed daily is 510+2890=3400 milligrams or 34 grams

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Priya drew a circle whose circumference is 25 cm. Clare drew a circle whose diameter is 3 times the diameter or Priya’s circle. What is the circumference of Clare’s circle?

Answers

Answer: 75 cm

Step-by-step explanation:

We know that the circumference of a circle is given by :-

$\text{Circumference}= \pi d$ , where d= diameter.

Given : Priya drew a circle whose circumference is 25 cm.

Substitute Circumference= 25 in the formula , we get

$25= \pi d\n\n\Rightarrow\ d=(25)/(\pi)$

If Clare draw a circle whose diameter is 3 times the diameter or Priya’s circle.

Then, the diameter of Clare's circle = $d'=3d=3(25)/(\pi)=(75)/(\pi)$

Now , the circumference of Clare’s circle :

$\text{Circumference}= \pi d'\n\n=\pi *(75)/(\pi)=75\ cm$

Hence, the circumference of Clare’s circle = 75 cm

What Fraction Is Bigger 8/15 or 14/25?

Answers

The first thing to do is to make the denominators the same:
8/15 = 40/75
14/25 = 42/75

42/75 is bigger than 40/75. Therefore, 14/25 is bigger than 8/15.

In order to solve these problems, you would have to change the fractions so that they have equal denominators. In order to do so, you must find the LCM of the denominators, in this case 15 and 25.

The LCM is 75 for these two numbers. Now, you change the fractions based on their new denominators.

8/15 = 40/75
14/25 = 42/75

I got this by dividing 75 by the previous denominators and multiplying that result by the original numerators. (i.e. 75/25 = 3 * 14 = 42)

So, now that you've changed both fractions to have equal denominators, you can see, by the numerators, which of the two is bigger.

Your answer is 14/25.

Hope this is clear and helps you out for future problems :)

Solve 4y-70=12y+2 explain

Answers

4y-70=12y+2
-8y=72
y=-9

4(-9)-70=12(-9)+2
-36-70=-108+2
-106=-106

Answer:

y=-9

Step-by-step explanation:

Write an equation to represent the proportional relationship between the # of Vegetable Plants (x) and the # of Flowers (y).

Answers

Answer:

Proprortional Value is equal to 2/3 or 2:3

Step-by-step explanation:

4/6=2/3

6/9=2/3

8/12=2/3

10/15=2/3

14/21=2/3

What property is shown? –12 + (27 + 12) = –12 + (12 + 27)

A.associative property
B.commutative property
C.distributive property
D.opposite of a sum property

Answers

commutative property is
a+b=b+a
we see the only difference between -12+(27+12) and -12+(12+27) is they are switched

so it would be commutative
it's not associatve because associative deals with moving parenthasees

Correct option B commutative property
The numbers are just switched, there is no difference in it.
a + b is same as b+a
Similarly,
-12 + 27+12 = -12 + 39 = 27
-12+12+27 = 27
See, no change takes place,just the positions of the numbers are changed

A father requires his son to do chores for 4 to 6 hours a week. If the son wants to dochores daily, how many hours per day is this (in interval notation)?

Answers

Answer:

I believe the answer is the first one [4/7 ,6/7].

I used process of elimination

The fourth one is unreasonable and impossible.

The third one is more than the weekly requirement.

The second one is the weekly requirement.

The first one would have to be in reason because of that.

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