Help... 1[tex]\frac{2}{5}[/tex] + 1[tex]\frac{1}{2}[/tex] = ?

Answer:

The claim that students spend the majority of their money buying music is not valid. The survey Ximena conducted is not representative of the entire population of students, as it only surveyed 80 students randomly chosen as they left the school. Therefore, the results of the survey cannot be used to make a general statement about how all students spend their money.

Step-by-step explanation:

Answer:

THE ANSWER IS C BECAUSE THE TWO CALCULATIONS ARE EUQAL AND DIVIDED BY 2

Step-by-step explanation:

Answer:

The scale is 1/2 a meter per centimeter.

Step-by-step explanation:

7 is half of 14.

Answer:

4%

Step-by-step explanation:

I believe four percent she rolled 100 times in total but out of 100 times she only got an even number 4 times

Answer: 70%

Step-by-step explanation:

The total answers count 30 - it's 100%, so to get a 1% value, divide 30 by 100 to get 0.30. Next, calculate the percentage of 21: divide 21 by 1% value (0.30), and you get 70.00%

Answer:

12

Step-by-step explanation:

Answer:

8x to the power three to the power 12

Step-by-step explanation:

Answer:

the correct answer is B 2x + 1 = 7

Answer:

x = 2

is not a solution for (B)

as 2(2) = 4

4 + 1 = 5

Step-by-step explanation:

The solution of for the system of linear equations shown in the graph is x = -1/2 and y = 3/2.

Given points of two lines:-

Line 1 : (0,0) , (1,-3)

Line 2 : (0,2) , (-1,1)

Let the Equation of Line 1 : y = mx + c

m = (-3-0)/(1-0) = -3/1 = -3

Putting (0,0) in  y = mx + c, we get

0 = -3*0 + c

0 = 0 + c

c = 0

Hence,

Equation of Line 1 : y = -3x or y + 3x = 0  ...(1)

Similarly, we can find,

Equation of Line 2 : y = x + 2 or y - x = 2  ...(2)

(1) - (2),

4x = -2

x = -2/4 = -1/2

Putting the value of x in (2), we get,

y - (-1/2) = 2

y + 1/2 = 2

y = 2-(1/2)

y = 3/2

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Answer:80

Step-by-step explanation:

what you do is since there’s a whole and a present multiply them and then divide by 100 and there’s your answer.So Sasha was wrong.(btw I’m in 6th grade and this is exactly what we are working on so I know lol)

Answer: k - 15 = 33

Step-by-step explanation:

So basically you just translate the problem into math form. 33 is a #, is is an = sign so, 33 = so far. Then 15 is less than k, which is not 15 - k but k - 15. There's a difference. Say k is 30, so 30 - 15 and not 15 - 30. So then you have 33 = k - 15, then I just switched it around to look better and done.

Answer:

k-15=33

Step-by-step explanation:

Answer: .32

Step-by-step explanation:

1.6

X0.2

——-

.32

So the trick here is to look at the decimals. We can solve this problem like it’s 16×2, as long as we add the decimal points back in. so in this case the decimal points are in the tenths spot so we move them twice in the 32. I hope the picture helps too. Hope this helped!

Answer:

option- A

Step-by-step explanation:

the typical value is greater in set B . The spread is greater is set A.

Answer:

n = 24

Step-by-step explanation:

first put the equation into fraction form and cross multiply:

12/18 = n/36

12(36) = n(18)

432 = 18n

now isolate the variable:

432/18 = 18n/18

24 = n

Answer:

Im very confused

1) 9 (whole)

2) 8 (whole)

3) 38.08 (part)

4) 24 (whole)

A = part

B = whole

C = part

D = whole

Answer:

original price = $84

discount percent = 8.33%

discount = 8.33% of $84 = 8.33 × 84 / 100 = $7

Sale price = $84 - $7 = $77

Answer: j=7*6

Step-by-step explanation:

Answer:

3.04

Step-by-step explanation:

4.4/11 = 0.4

0.4•7.6 = 3.04

The table will give you an ordered pair for each row.

For the first row, it is (4,-2).
Find a point on the graph that corresponds to the ordered pair. Thereafter, find a point that corresponds to the table.

Answer:

A) X = 4 - 7Y

B) Independent Variable: Y, Dependent Variable: X

Step-by-step explanation:

Explanation for A:

We form a simple equation, knowing that if he drinks y liters each day after one week it would be 7Y. Then, we'd subtract it from 4

So equation would be X = 4 - 7Y

Explanation for B:

The independent is Y because doesn't change or get affected by another variable, and the dependent variable is X because depending on the value of Y, X will change accordingly.

9 the rolls will result in a sum greater than 10 if the experiment is repeated 108 times.

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

The theoretical probability of both rolls equaling a sum greater than 10 is 3 over 36.

As, Expected number of outcomes = theoretical probability * number of trials

Expected number of outcomes = 3/36 x 108

                                                    = 9

Thus, the required value is 9.

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5x +2

hope it helps

.....

Answer:

d

Step-by-step explanation:

because because because because because

Answer:

Step-by-step explanation:

its 1000

Answer:

n=63

Step-by-step explanation:

have great day :D

Answer:

Step-by-step explanation:2,4

Answer:

Step-by-step explanation:

#18 complementary

3x +45 = 90

3x + 45-45 = 90 -45

3x = 45

Divide both sides by 3

3x/3 = 45/3

x = 15

#20 supplementary

2x + 3x + 25 = 180

5x + 25 = 180

5x + 25 - 25 = 180 -25

5x = 155

Divide both sides by 5

5x/5 = 155/5

x = 31

#15 - vertical

4x - 25 = 75

4x - 25 + 25 = 75 + 25

4x = 100

Divide both sides by 4

4x/4 = 100/4

x = 25

#16 - complementary

4x + 2x = 90

6x = 90

divide by 6 each side

x = 15

#19 complementary

x -20 + x = 90

2x -20 = 90

2x -20 + 20 =90 +20

2x = 110

Divide both sides by 2

2x / 2 = 110/2

x = 55

Answer: o

Step-by-step explanation:

The lengths of sides BC, DE, and EC in triangle DEC are given as [tex]4[/tex] feet, [tex]1.8 feet,[/tex] and 0.8 foot, respectively. The length of side [tex]AB[/tex] is approximately [tex]3.36[/tex] feet.

Part A:

To draw triangles  [tex]ABC[/tex] and  [tex]DEC[/tex] separately, follow the steps below:

Draw a straight line segment DE with length  [tex]1.8[/tex] feet.

From point D, draw a line segment DC perpendicular to DE with length 4 feet.

Connect point E and point C with a straight line segment EC.

From point B, draw a line segment BE perpendicular to BC with length 0.8 foot.

Draw a straight line segment BC that intersects line segment DC at point A.

Connect point A and point B with a straight line segment AB.

The lengths of sides BC, DE, and EC in triangle DEC are given as [tex]4[/tex] feet, [tex]1.8 feet,[/tex] and 0.8 foot, respectively.

Part B:

Since triangles  [tex]ABC[/tex] and [tex]DEC[/tex] are similar, their corresponding sides are proportional. Let x be the length of side AB. Then we have:

[tex]AB/DE = BC/EC[/tex]

Substituting the given values, we get:

[tex]x/1.8 = BC/0.8[/tex]

Solving for BC, we get:

[tex]BC = 0.8x/1.8[/tex]

Since BC and EC are the two legs of a right triangle DEC, we can use the Pythagorean theorem to find BC:

[tex]BC^2 + EC^2 = DE^2[/tex]

Substituting the given values, we get:

[tex](0.8x/1.8)^2 + 4^2 = 1.8^2[/tex]

Solving for x, we get:

[tex]x = 1.8 * (sqrt(1.8^2 - 4^2)) / 0.8[/tex]

[tex]x \approx 3.36 feet[/tex]

Therefore, the length of side [tex]AB[/tex] is approximately [tex]3.36[/tex]  feet.

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