Mathematics Middle School

koperasi sekolah membeli 5 lusin buku tulis dengan harga 30.000 tiap lusin. dari hasil penjualan itu koperasi memperoleh untung sebesar 30.000, maka harga jual satu buah buku tulis adalah

Koperasi Sekolah Membeli 5 Lusin Buku Tulis Dengan Harga 30.000 Tiap Lusin. Dari Hasil Penjualan Itu

Answers

Answer 1

Answer:

c

Step-by-step explanation:

Answer 2

Answer:

letter C

Step-by-step explanation:

sorry if it's copy

Related Questions

Please help me i dont understand this is 15 points

Answers

Answer:

2. y =13x + 143

Step-by-step explanation:

plug in numbers in your calculator; go to stat → edit,then again to stat → calculate →linear reg→ enter and get a and b, round the numbers

a = 13 , b = 143

Help me on this last one

Answers

Answer:

The answer is A. [tex]g(x)=4x^2[/tex]

A distribution in which the mean, mode, and median are nearly equal is called a ___________
distribution

a. bimodal
b. flat
c.normal
d. skewed

Answers

Answer:

C) Normal distribution

Step-by-step explanation:

We are supposed to find A distribution in which the mean, mode, and median are nearly equal

A) bimodal

Bimodal distribution is a statistical pattern in which the frequencies of values in a sample have two distinct peaks, even though parts of the distribution may overlap.

B) Flat

A flat distribution can be said either to have no tails, or to have short tails.

C) Normal

A distribution in which the mean, mode, and median are nearly equal is called a normal distribution

D)Skewed

A left-skewed, negative distribution will have the mean to the left of the median.

A right-skewed distribution will have the mean to the right of the median.

Hence Option C is true

Answer:

its c on usatestprep

Can someone help me with these questions

Answers

Answer:

1. 1/40

2.9/50

3.1/5 =0.2= 20%

i dont know the rest sorry , but is that a dog behind it the paper ?

Veronica wants to check her work after evaluating -108 -(-6). What steps can she follow to verify her answer

Answers

1. Distribute the - into the -6 to get a positive 6.
2. Add -108 + 6 together
3. Get -102 as your answer!

Hope this helps :)

Answer:

Its C

Step-by-step explanation:

2) Michael makes a purchase of $3,500 for a new fridge using a credit card that has an APR of 15%. He makes monthly payments of $150. What is the total amount of interest based on the APR?

Answers

Answer:

I do believe the answer is $675

Step-by-step explanation: I just took 15% of 3,500 and added it to the monthly 150

Can someone help me on these two questions?

Answers

Answer:

So to find ratio for questions like these we do x/y

So the ratio for the first one is 5/7

The ratio for the second is 12/7 or 1 5/7

Step-by-step explanation:

How do you write the circumference of the circle in terms on 几

Answers

____________________________________

Hey!!!

The formula to find circumference of circle

=2 pi r

For eg:

Radius=4 cm

Circumference of circle=2 pi r

=2 *pi*4

=8 pi

Hope it helps..

Good luck on your assignment

#Stay safe#

__________________________________

A football is punted into the air. Its height h, in meters, after t seconds is given by the equation b) When will the ball reach a height of 30.4 meters?

Answers

Answer:

h = mt

Step-by-step explanation:

Find the area of the given triangle. Round your answer to the nearest tenth.

Answers

Answer:

x = 7.3

Step-by-step explanation:

We're going to use the formula for the area of a triangle:

Area = 1/2 x base x height

We can see that the height of the triangle is 10, but we don't know what the base length is.

We know that one of the angles is 54 °, so we're going to use SOH CAH TOA to work out the length of the base.

We're using the height and the base, which are the opposite (O) and adjacent  (A) sides relative to our angle. According to SOH CAH TOA we'll use tan (T).

The equation is tan(Ф°) = O/A, where Ф is our angle (54°), O is our opposite side (10), and A is our adjacent side. Since we don't know what A is we'll use x.

tan (54°) = 10/x

Multiply both sides of the equation by x.

x tan (54°) = 10

Divide both sides of the equation by tan(54°).

x = 10/tan(54°)

Use your calculator to solve for x.

x = 7.265

To the nearest tenth, x = 7.3

Please and thank you!! 25 points!!

Answers

Answer:

1. 5

2. 6

3. 1

4. 4

5. 2

6. 3

Step-by-step explanation:

→Number 1 is paired with explanation 5, because it explains how a certain pair can be associated with one another, and provides the example of corresponding angles.

→Number 2 is paired with explanation 6, because the explanation states how angles are paired with one another based on the correspondence between them.

→Number 3 is paired with explanation 1, because the explanation states how sides are paired with one another based on the correspondence between them.

→Number 4 is paired with explanation 4, because the explanation is talking about how figures can be congruent to one another.

→Number 5 is paired with explanation 2, because the explanation states the definition of an included angle.

→Number 6 is paired with explanation 3, because the explanation states the definition of an included side.

If Maria left a $10.16 tip on a breakfast that cost $86.89, approximately what percentage was the tip.

Answers

Answer:

11.6929451 %

Step-by-step explanation:

Take the amount of the tip over the total amount to find the percent left

10.16/86.89 =

.116929451

Multiply by 100 to put in percent form

11.6929451 %

Answer:

approx: 11.693%

Step-by-step explanation:

First divide the tip by the cost:

10.16/86.89

which =

0.11692945103

To get it to a percent we multiply by 100:

0.11692945103x100=

11.692945103

now all we need to do is add the percentage

11.692945103%

And it says approximately so that means round. A good place to round in a number as large as this is the thousandths place, so since the 9 next to the 2 is closer to 10 we make the 2 a 3 to fully complete the rounding.

= 11.693%

please mark brainliest and have a great day

Does (–2, 0) make the equation y = x true?

Answers

no. y=x would mean it would either be (-2,-2) or (0,0). basically they have to be the same.

write (2a)^4 without exponents

Answers

Answer: 2a*4*4*4*4= x (Vote me brainliest please)

Step-by-step explanation: Exponents are simply telling you to multiply the base number or expression by that many times.

Answer:

[tex] = 16 {a}^{4} \\ [/tex]

Step-by-step explanation:

[tex](2a) ^{4} [/tex]

[tex]2a \times 2a \times 2a \times 2a \\ = 16 {a}^{4} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!


Please help with the question (it is the image lol) thanks!

Answers

Answer:

Volume of the liquid left in the container will be 80 ml.

Step-by-step explanation:

Two containers A and B having equal volumes of the liquid has been shown in the figure attached.

Let the volume of the liquid in each container = x ml

120 ml of the liquid was poured in container B from container A.

Volume of liquid in container B = 4 × Volume of the liquid in container A

x + 120 = 4(x - 120)

x + 120 = 4x - 480

4x - x = 480 + 120

3x = 600

x = 200 ml

Volume of the liquid left in container A = 200 - 120

                                                                    = 80 ml

Therefore, volume of the liquid left in the container A will be 80 ml.

What is the equation of the line that passes through the point (-7,-1) and has a slope of 1?

Answers

Answer:

Step-by-step explanation:

y + 1 = 1(x + 7)

y + 1 = x + 7

y = x + 6

Which ordered pair would form a proportional relationship with the point graphed below?

Answers

Answer:

B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Option B falls inside of the line, keeping it proportional

Maya is building a wooden box with a rectangular base that is 20 in and by 14 in tall. If she wants an open box without a top how much wood will Maya use?

Answers

Area of one face = 280 inches squared
Area of 5 faces = 280 x 5

= 1400 inches squared worth of wood

what does DE equal to ?

Answers

The answer to your question should be EF

An insurance company uses the formula T = 3.5n + 5 to work out the cost, T pounds, for insuring a customer for n days. Work out the cost for travel insurance for 4 days.

Answers

Answer:

19

Step-by-step explanation:

T=3.5n+5 -------- T= 3.5(4)+5

3.5*4 = 14  -------- T=14+5

            T=19

The cost of travel insurance for 4 days is 19 currency units

The expression T = 3.5n + 5 shows the cost of insuring a customer for n days.

The question wants to know the cost of insuring a customer for 4 days. You should therefore replace the n in the expression with 4.

= 3.5n + 5

= 3.5 x 4 + 5

= 14 + 5

= 19 currency units

The cost of travel insurance for 4 days is therefore 19 currency units.

Find out more at https://brainly.com/question/16871646.

A worker bee has a mass of 1*10^-4. There are 4*10^4 worker bees living in one hive. What is the mass of all the worker bees in the hive together? Write your answer in scientific notation.

Answers

Answer:

[tex]4[/tex]

Step-by-step explanation:

[tex]1 \times 10^{-4} \times 4 \times 10^{4}[/tex]

[tex]4 \times 1 \times 10^{-4} \times 10^{4}[/tex]

[tex]4 \times 10^{-4+4}[/tex]

[tex]4 \times 10^{0}[/tex]

[tex]4[/tex]

Answer:

4 x 10^0

Step-by-step explanation: That is the correct answer on khan academy

Deandre bought 4 CDs that were each the same price. Including sales tax, he paid a total of $69.20. Of that total,was $3.60 tax. What was the price of each CD before tax?

Answers

$16.40 each cd before tax. I subtracted $3.60 from the total because that is the total worth tax. Then I divided by 4 and got each cd price before tax was added.

i need help guys ):

Answers

Answer:

It is a dilation. You know because when you see the shapes form left to right, the shape increases in size.

Dialation because the shape size increases

What is the constant in 15-8y
A 15
B 8
C-8
D -15

Answers

Simplifying
15 + 8y = 15

Add '-15' to each side of the equation.
15 + -15 + 8y = 15 + -15

Combine like terms: 15 + -15 = 0
0 + 8y = 15 + -15
8y = 15 + -15

Combine like terms: 15 + -15 = 0
8y = 0

Solving
8y = 0

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Divide each side by '8'.
y = 0

Simplifying
y = 0

what point is located on the graph of any proportional relationship​

Answers

Answer:

At the end

Step-by-step explanation:

16
h(x)=−(x−2)
2
+16

Answers

Answer: -24

Step-by-step explanation:

Terrell wrote that 5-4.2=8. Which statement about this answer is true?

Answers

Answer:

No.

Step-by-step explanation:

No. 5 - 4.2 = 0.8

Answer: 8 is wrong because a number gets smaller, not larger, when you take 4.2 from it.

Step-by-step explanation: I had this on my Imagine Math. The reason why this is wrong is because 5 – 4.2  doesn't not equal 8!Estimation might help. 5 doesn't need to be rounded. 4.2 is rounded to 4...5-4 = 1The Actual answer is actually 0.8.

I hope this helps :)

What value is a discontinuity of x squared plus 2 x plus 3, all over x squared minus x minus 12?

x = −1
x = −2
x = −3
x = −4

Answers

The answer that you’re looking for to this question is x = -4

Answer:

x=-2

hope this helped

Steven paid $52 in sales tax. The retail price of the item was $966. What is the sales tax percentage?

Answers

Answer:

5.38%

966/52 = 0.05383022774

Step-by-step explanation:

5.38 can also be 5.4%

As proved.

We can write this as 52>52.2

To find  52>52.49 we only have to divide it by the larger number.

52.49/966 = 0.05433747412

or multiply to check.

966 x 0.054 = 52.164   sales tax  =  5.4% paid

966 x 0.053835 = 52.00461 = 5.38 % paid  

Both these amounts or in-between would be sales tax percentage

But exact would be 5.38%

Answer:

5.383%

Step-by-step explanation:

To find what percent a part is of a number, divide the part by the number and multiply by 100%.

part = 52

number = 966

percent = 52/966 * 100% = 5.383%

The picture is up there (thank you!)

Answers

Answer:

$7.52

Step-by-step explanation:

It adds 0.34 dollars every month...

Hope this helps (:

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