the sum of x and 7 .............

Answer:

12

Step-by-step explanation:

Answer:

4x - 5 > 7 = [3,∞)

Step-by-step explanation:

Move all terms not containing x to the right side of the inequality.

4x > 12

Divide each term by 4 and simplify.

x > 3

Convert the inequality to interval notation.

[3,∞)

I hope this helps

if you could, feel free to mark me Brainliest it would be much appreciated :D

Answer:

2300

Step-by-step explanation:

Answer:

The symbol stands for an unknown number, the symbol y stands for an unknown number and the symbol 2 stands for a known number, two. In algebra when two symbols that stand for a number are placed beside each other the operation between them is taken to be multiplication.

Step-by-step explanation:

Answer:

3w+2w= 10

5w= 10

w = 10/5

w = 2

Answer:

w = 2

Step-by-step explanation:

3w+2w= 10

Combine like terms

5w = 10

Divide each side by 5

5w/5 = 10/5

w = 2

Answer:

The least common denominator would be 30.

Step-by-step explanation:

5- 5, 10, 15, 20, 25, 30, 35, 40

6- 6, 12, 18, 24, 30, 36 42, 48

Answer:

83.85%

Step-by-step explanation:

The formula for confidence interval

= Mean ±( z × Standard deviation/√n)

Confidence Interval = Mean ± Margin of Error

Mean = 4.20mm

n = 87

Standard deviation = 0.10mm

z = ????

Hence:

Confidence Interval = Mean ± Margin of Error

Step 1

We find the Margin of Error

(4.185, 4.215) = 4.20 ± Margin of Error

4.20 - 4.185 = 0.015

4.215 - 4.20 = 0.015

Hence, Margin of Error = ± 0.015

Step 2

We find the z score

Margin of Error = z × Standard deviation/√n

±0.015 = z × 0.10/√87

± 0.015 = 0.0107211253z

z = ±0.015/0.0107211253

z = 1.39910686428

z score ≈ 1.4

Step 3

We find the confidence interval that corresponds to 1.4

Using the z table to find the Probability

P(z = 1.4) = 83.85%

Therefore, the level of the confidence interval (4.185, 4.215) is 83.85%

Answer:

[4.1mm to 4.3mm]

Step-by-step explanation:

Sample size = 87 glass sheets

Sample mean = 4.2mm

Sample standard deviation = 0.1mm

Confidence interval or level = the range from lower limit of sample mean to upper limit of sample mean

[4.2 - 0.1] to [4.2 + 0.1]  = [4.1mm to 4.3mm]

Answer:

It will take 6.66 minutes to complete one lap.

Answer:

7 bottles

$10

Step-by-step explanation:

multiply

1/6×42= 7 bottles

5/9×18= $10

Answer:

12 hours

Step-by-step explanation:

15/2=7.5

90/7.5 = 12

Answer:

B

Step-by-step explanation:

Please mark brainliest if I helped.

A line segment that forms a right angle with another segment at its midpoint is a perpendicular bisector.

Option B is the correct answer.

A line segment is part of a line that is bounded by two distinct endpoints and contains every point on the line between its endpoints.

It can be measured by its length and is finite in size.

We have,

A perpendicular bisector is a line or line segment that cuts another line segment into two equal parts and forms a right angle with it.

The midpoint of the line segment is the point where the perpendicular bisector intersects it.

Therefore, if a line segment forms a right angle with another segment at its midpoint, it is a perpendicular bisector since it cuts the segment into two equal parts and forms a right angle with it.

Thus,

A line segment that forms a right angle with another segment at its midpoint is a perpendicular bisector.

Learn more about line segments here:

https://brainly.com/question/17006091

#SPJ5

Answer:

2.5y=amount spent on drinks

Step-by-step explanation:

If chips are $2 and drinks are $2.50 and we do not know how many he bought of each, we put this into an equation which is

2x+2.5y

x=number of bags of chips while the 2 is two dollars per bag

so, if he bought 2 bags of chips 2(2)= $4 spent.

y= number of drinks and 2.5 is $2.5 per drink, so if he bought 4 drinks:

2.5(4)= $10 spent on drinks.

Answer: Cost of  a giant cookies = $1.39

Cost of a cake= $6.95

Cost of a pie= $4.95

Step-by-step explanation:

Let price of a giant cookie = x

Then,

price of a cake = 5x

Price of a pie = 5x-2

Cost of  30 cakes, 40 pies, and 200 giant cookies = 30 (5x)+40(5x-2)+200x

= 150x+200x-80+200x   [By distributive property a(b+c)=ab+ac]

= 550x-80

Given cost = $684.50

[tex]\Rightarrow\ 550x-80=684.50\\\\\Rightarrow\ 550x= 684.50+80[/tex]

[tex]\Rightarrow\ 550x=764.50\\\\\Rightarrow\ x=\dfrac{764.50}{550}\\\\\Rightarrow\ x=1.39[/tex]

Cost of  a giant cookies = $1.39

Cost of a cake = 5 x $1.39  = $6.95

Cost of a pie = $6.95 -  $2 = $4.95

Answer:

[tex]\large\boxed{\mathtt{x=-1}}[/tex]

Step-by-step explanation:

[tex]\textsf{For this problem, we are asked to solve the equation for x.}[/tex]

[tex]\textsf{Note that there are lines in between both expressions, this is asking for the \underline{Absolute Value}.}[/tex]

[tex]\large\underline{\textsf{What is Absolute Value?}}[/tex]

[tex]\textsf{Absolute Value is exactly how it sounds like, it's the real value of a term.}[/tex]

[tex]\textsf{Absolute Value turns negative numbers into positive numbers.}[/tex]

[tex]\textsf{*A Negative Value isn't really the real value of a number. A Positive Value is.}[/tex]

[tex]\underline{\textsf{Example;}}[/tex]

[tex]\tt {Change \ from \ Negative \ to \ Positive.} \atop \boxed{{|-5| \rightarrow 5.}}[/tex]

[tex]\large\underline{\textsf{Keep the Absolute Values!}}[/tex]

[tex]\textsf{We shouldn't try to find the absolute value of the expressions first.}[/tex]

[tex]\textsf{Instead, identify 2 possible equations using Absolute Value.}[/tex]

[tex]\textsf{There could be 2 possible solutions for x.}[/tex]

[tex]\tt x-2=4+x[/tex]

[tex]\underline{\textsf{Or;}}[/tex]

[tex]\tt x-2=-(4+x)[/tex]

[tex]\large\underline{\textsf{Solve the First equation;}}[/tex]

[tex]\tt x-2=4+x[/tex]

[tex]\underline{\textsf{Add 2 to both sides of the equation;}}[/tex]

[tex]\tt x=6+x[/tex]

[tex]\textsf{There is \underline{no} solution for this equation. We should look at the second equation.}[/tex]

[tex]\large\underline{\textsf{Solve the Second equation;}}[/tex]

[tex]\tt x-2=-4-x[/tex]

[tex]\underline{\textsf{Add 4 to both sides of the equation;}}[/tex]

[tex]\tt x=-x-2[/tex]

[tex]\underline{\textsf{Add x to both sides of the equation;}}[/tex]

[tex]\tt 2x=-2[/tex]

[tex]\underline{\textsf{Divide each side by 2;}}[/tex]

[tex]\large\boxed{\mathtt{x=-1}}[/tex]

[tex]\textsf{Using Absolute Value, x = -1.}[/tex]

 the answer is 154 count by 4's

Step-by-step explanation:

14,18,22,26,30,34,38,42,46,50,54,58,62,66,70,74,78,82,86,90,94,98,102,106,110,114,118,122,126,130,134,138,142,146,150,154,158,162

Answer:

the answer is 154

Step-by-step explanation:

you add 4 every time

Answer:

y = -7/3x + 5

Step-by-step explanation:

7x + 3y = 15

- subtract 7x from both sides

3y = -7x + 15

- divide both sides by 3

y = -7/3x + 5

Answer:

(a) The difference between Kate's IQ and the mean is 21

(b) The z score is 1.4

Step-by-step explanation:

Here is the complete question:

IQ scores have a mean of 100 and a standard deviation of 15. Kate has an IQ of 121. (a) What is the difference between Kate's IQ and the mean (b) Convert Kate's IQ score to a z score.

Step-by-step explanation:

(a) To determine the difference between Kate's IQ and the mean, this can be done by subtracting the mean from Kate's IQ.

Mean = 100

Kate's IQ = 121

Difference between Kate's IQ and the mean = 121 - 100 = 21

Hence, the difference between Kate's IQ and the mean is 21.

(b) To convert Kate's IQ score to a z score,

z score is given by the formula

[tex]z =\frac{x - \mu}{\sigma}[/tex]

Where [tex]x[/tex] is the score

[tex]\mu[/tex] is the mean

and [tex]\sigma[/tex] is the standard deviation

From the question,

[tex]x[/tex] = 121

[tex]\mu[/tex] = 100

[tex]\sigma[/tex] = 15

Then, the z score is

[tex]z =\frac{x - \mu}{\sigma}[/tex]

[tex]z =\frac{121 - 100}{15}[/tex]

[tex]z =\frac{21}{15}[/tex]

[tex]z =\frac{7}{5}[/tex]

z = 1.4

Hence, the z score is 1.4.

Answer:

a: Tanθ = x/y

Step-by-step explanation:

We should recall the trigonometric ratios:

A way to remember this is SOH, CAH, TOA

To solve, we test each option and see if they align with the trigonometric ratios

(see image)

Answer:

.079 is the smallest

Answer:

.079 would be smaller than .12.

Step-by-step explanation:

Since the tenths place in .079 has a zero and tenths place in .12 has a 1, .12 would be larger.

Answer:

If she rounds 88 to the nearest hundred and 12 to the nearest ten, her estimate will be 1,000 because if you take 88x12, your answer is 1056. so knowing that the closest answer to 1056 is 1000 not 900.

Hope it helped!

Answer:

If she rounds 88 to the nearest hundred and 12 to the nearest ten, her estimate will be 1,000.

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

The absolute value of any number is just its distance from 0.

-4 is 4 away from 0, so its absolute value is 4.

-5 is 5 away from 0, so its absolute value is 5.

Therefore, the equation is basically just asking what is 4 + 5, which is 9 :D.

Answer:

9

Step-by-step explanation:

The bars around the two numbers imply that it wants you to find the absolute value. Absolute value is the distance a number is from zero since distance is always positive to find the answer just make the number positive. Following this rule l-4l=4 and l-5l=5. Then add them together 4+5=9.

Answer:

31.25%

Step-by-step explanation:

You would be facing Northeast.

Answer:

10:4

35:14

55:22