1 Which of the following statements is true?​

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

Answer:

correct answer is 7 years

Step-by-step explanation:

A+56=9(A)

56+9A

A=7

he will be 7 years old he is pretty old

Answer:

Kevin is 7 years old right now.

Step-by-step explanation:

Let x be Kevin's age right now, that's what we're trying to find.

In 56 years, he'll be 9 times older than he is now, so we can say:

x + 56 = 9x

Now we can get the x values on the right side of the equation so that:

56 = 8x

Now solve for x and you have his current age which is 7.

Answer:

15

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Double negatives are POSITIVE!

Always add the opposite when you see double negatives:

w-(-6) can also be written as w+6

Therefore

w+6=17

  -6   -6

w=11

Answer:

Answer:

The equation is: \(5c-2=9\)

Step-by-step explanation:

Since 2 less than the product of 5 and a number c is equal to 9, it follows:

\(5c-2=9\)

Step-by-step explanation:

The QUESTION is not well presented

Name the sets of numbers to which the given number belongs.

\(\sqrt{25}\)

N represents Natural Numbers

W represents Whole Numbers

Z represents Integers

QR represents Rational Numbers

IR represents Irrational Numbers

Answer:

a. N, W, Z, QR

Step-by-step explanation:

Given

\(\sqrt{25}\)

Required

Select the set of number belongs to;

First, the expression needs to be evaluated

\(Expression = \sqrt{25}\)

\(Expression = \±5\)

Comparing the result of the expression to the given categories;

\(\±5\) is a natural number

\(\±5\) is a whole number

\(\±5\) is an integer

\(\±5\)  is rational because it can be expressed as ratios

Since \(\±5\) is rational, it can't be irrational;

Hence, the correct option is A.

Answer:

1/32

Step-by-step explanation:

The probability of rolling a 6 on a 6-sided die is 1/6, and the probability of rolling a 4 on a 6-sided die is also 1/6.

Assuming that the rolls are independent (i.e., the outcome of one roll does not affect the outcome of the other roll), the probability of rolling a 6 and then a 4 is the product of the probabilities of each individual event:

Probability of rolling a 6 and then a 4 = (Probability of rolling a 6) x (Probability of rolling a 4)

= (1/6) x (1/6)

= 1/36

Therefore, the probability of rolling a 6 and then a 4 on a 6-sided die rolled twice is 1/36, or approximately 0.0278 (2.78%).

Answer:

I'm pretty sure that the answers would go, Wrong, increased, 9 1/2 points, 6 5/8 points, dropped, 12 3/4 points.

Step-by-step explanation:

The reason why it would be wrong is because the amount of points lost was less than the total amount of points gained.

In week one and two the company gained 9 1/2 points and 6 5/8 points. When you add them together, you get 16 1/8 points.

In week three the company lost 12 3/4 points. If you multiply the fraction to change the denominator to 8, the mixed fraction becomes 12 6/8.

16 1/8 - 12 6/8 = 3 3/8

As you can see, there are still points left over.

In the fourth week, they ended up losing all of their points and then some more, but from my understanding it's just asking about the third week.

Hope that this helps!

Answer:

EASY PEASY

Step-by-step explanation:

9²

HOPE IT HELPS YOU

Answer:

\(9^{2}\)

Step-by-step explanation:any number multiplied by itself usining an exponent is just the original number squared for example

"x" multiplied by "x" using an exponent is \(x^{2}\)

Answer:

X | Y

4 | 2

8 | 3

12 | 4

Step-by-step explanation:

Answer:

(0, 10)  = YES

(1, 7) = YES

(2, 4) = YES

(2, -6) = NO

(1, 10) = NO

(3, 1) = YES

Step-by-step explanation:

Given

slope = m = -3

y-intercept = b = 10

We know that the slope-intercept of line equation is

\(y = mx+b\)

where m is the slope and b is the y-intercept

substituting m = -3 and b = 10 in the slope-intercept of line equation

y = mx+b

y = -3x + 10

Thus, the equation of line is:

y = -3x + 10

Now let us check all the points to determine whether each point appears on the line with the given slope and y−intercept.

For (0, 10)

y = -3x + 10

10 = -3(0) + 10

10 = 0+10

10 = 10

True

Yes for (0, 10)

For (1, 7)

y = -3x + 10

7 = -3(1) + 10

7 = -3 +10

7 = 7

True

Yes for (1, 7)

For (2, 4)

y = -3x + 10

4 = -3(2) + 10

4 = -6 + 10

4 = 4

True

Yes for (2, 4)

For (2, -6)

y = -3x + 10

-6 = -3(2) + 10

-6 = -6 + 10

-6 = 4

False

No for (2, -6)

For (1, 10)

y = -3x + 10

10 = -3(1) + 10

10 = -3 + 10

10 = -7

False

No for (1, 10)

For (3, 1)

y = -3x + 10

1 = -3(3) + 10

1 = -9 + 10

1 = 1

True

Yes for (3, 1)

Summary:

(0, 10)  = YES

(1, 7) = YES

(2, 4) = YES

(2, -6) = NO

(1, 10) = NO

(3, 1) = YES

Answer:

⁷⁰¿⁸⁷⁵⁹³⁰⁰³⁷

583

Step-by-step explanation:

7393 he and

Answer: Michael's median

Step-by-step explanation:

Michael's grades mean (%) = data's sum(80+76+...)/total data (7)

80+76+73+70+40+25+10/7

374/7

53.4% (right)

Michael's grades median (%) = (data's sum + 1)/2

(374 + 1)/2

data - 187 and data - 188

= 73% (wrong)

Melissa grades mean (%) = data's sum(88+83+...)/total data (7)

503/7

71.85% = 71.9% (right)

Melissa grades median (%) = (data's sum + 1)/2

(503+1)/2

504/2

data - 252

= 70% (right)

Answer:

Question 1(Multiple Choice Worth 5 points)

Solve for x: 5x + 15 = 28

                       -15     -15

                   5X=13

                 /5      /5

            X=13/5

forty-three over five

thirteen over five

13

43

Question 2(Multiple Choice Worth 5 points)

When solving negative one over eight (x + 35) = −7, what is the correct sequence of operations?

Multiply each side by negative one over eight , add 35 to each side

Multiply each side by negative one over eight , subtract 35 from each side

Multiply each side by −8, subtract 35 from each side

Multiply each side by −8, add 35 to each side

Question 3(Multiple Choice Worth 5 points)

Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.

−5x − 25 = 78

Step 1: −5x − 25 − 25 = 78 − 25

Step 2: −5x = 53

Step 3: negative five times x over negative five = fifty-three over negative five

Step 4: x = negative fifty-three over five

Step 1: She should have added 25 to each side.

Step 1: She should have divided both sides by −5.

Step 3: She should have divided both sides by −5.

Step 3: She should have multiplied both sides by −5.

Question 4(Multiple Choice Worth 5 points)

Solve for x: one over eight (8x + 15) = 24

9

49

one hundred seventy-seven over eight

two hundred seven over eight

Step-by-step explanation:

Answer:

1. A

2. A

Step-by-step explanation:

Answer:

x=5

Step-by-step explanation:

step1: subtraction 7 from both sides (from 7 itself and 22)

step 2: divide both sides by 3

3x +7 =22

     -7 =-7

     3x=15

3x/3 = 25/3

   x=5

Answer:

1/3

Step-by-step explanation:

just convert it?

3/10

Step-by-step explanation:

60% is the same as 60/100

90% is the same as 90/100

90-60=30

30/100

30/100 is divided by 10 on each side to simplify it to 3/10

Answer

The answer is 500 miles

Step-by-step explanation:

So, 500 x 0.40 is equal to $200. And if we add the $40 a day fee it's now $240.

And the other company charges $0.30 a mile. So that equation is:

500 x 0.30 = $150 plus the $90 fee is $240.

Answer:

C

Step-by-step explanation:

Answer:

-2/3

Step-by-step explanation:

Since there are 3 units from 0 to -1 and the mark is on the 2nd one it's 2/3

don't know

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Answer: Range and mean = 8 of both

variance of Set X= 4.7

variance of Set Y= 4.6

Step-by-step explanation:

Two sets of data, set X and set Y are given

a.) Range is the difference of the highest value and the lowest value,

Therefore, Range of set X = 12-4=8

Range of set Y = 12-4=8

Now, Mean of a given data set is the average of all the terms present in the given data set

Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8

Mean of set Y= (4+5+7+32+20+12)/10= 8

Therefore, both the data sets has same range and mean.

b.) Standard deviation tells about the variability of the date and is given by,

S.D= σ = √∑ ( X − μ )^2/n

S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7

S.D of set Y= √(16+9+1+0+4+16)/10= √4.6

Variance is the square of S.D, that is, σ^2

Therefore, variance of set X=4.6

variance of set Y= 4.7

c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.  

To learn more about S.D and variance,

https://brainly.com/question/15858152

https://brainly.com/question/12402189

Answer: Range and mean = 8 of both

variance of Set X= 4.7

variance of Set Y= 4.6

Step-by-step explanation:

We know

a.) Range is the difference of the highest value and the lowest value,

Therefore, Range of set X = 12-4=8

Range of set Y = 12-4=8

Now, Mean of a given data set is the average of all the terms present in the given data set

Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8

Mean of set Y= (4+5+7+32+20+12)/10= 8

also

b.) Standard deviation tells about the variability of the date and is given by,

S.D= σ = √∑ ( X − μ )^2/n

S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7

S.D of set Y= √(16+9+1+0+4+16)/10= √4.6

Variance is the square of S.D, that is, σ^2

Therefore, variance of set X=4.6

variance of set Y= 4.7

c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.

The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:

2/8 = j/18

This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:

2/8 = j/18

218 = 8j

36 = 8*j

j = 36/8

j = 4.5

Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.

Answer:

Step-by-step explanation
2 over 8 equals j over 18

This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.

So, the correct proportion is:

Answer:

Step-by-step explanation:

3. (2,4) ?

Answer:

The answer is C because as the time on the treadmill increases, the calories burned increases.

Answer:

B

Step-by-step explanation:

brainliest please, i'm trying to rank up, only if u dont mind

Answer:

translation up

Step-by-step explanation: