simply 7y2 - 5y + 9y - 5y2

Answer:

"Sighs" should be "Sighed"

Answer: 76b2

Step-by-step explanation: hope this helps!!!!

Answer:

C

Step-by-step explanation:

(-4b)(-19b)

76b^2

PEMDAS

ANSWER:

[tex]y=3x+5[/tex]

draw a point at (0,-5). then move up 3 units, and right one unit. draw a pont there. using a ruler, connect the dots and draw arrows on each end to show it continues.

[tex]y=-\frac{3}{2} x+3[/tex]

draw a point at (0,3). move down 3 units, and right 2 units. draw a point there. connect them as before

EXPLANATION:

[tex]y=mx+b[/tex] is the slope-intercept form of an equation, where m is the slope, and b is the y-intercept.

i used desmos, a web application, for the graph

Answer:

y=3x+5

Step-by-step explanation:

The number of blue marbles in the jar are 8.

Given,  the total number of marbles in the jar = 24.

therefore, total number of all possible outcomes = 24.

Let the number of green marbles in Jar be x.

therefore, the number of favourable outcomes = x.

The probability that the marble drawn is green  = x/24

But we have the probability of drawing a green marble = 2/3

x/24 = 2/3

3x = 2 (24)

x = 16

Thus , the number of green marbles in the jar = 16

The number of blue marbles = 24 - 16 = 8

Hence, the number of blue marbles in the jar is 8.

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Your question is incomplete.Please find the missing content below.

There are 24 marbles in a jar out of them some are green and remaining are blue. If a marble is drawn from the jar at random, the probability that the green marble drawn is 2/3.Find the number of blue marbles in the jar.

Answer:

If the question is 5+4x(8-6)+2,then the answer is 15

Step-by-step explanation:

Using the percentage concept, it is found that:

a) Her tolerance is of (60 ±  6 minutes).

b) As a percentage, her tolerance times are of 60 minutes (± 10%).

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

[tex]P = \frac{a}{b} \times 100\%[/tex]

For this problem, the interval is between 54 and 66 minutes, that are both within 6 minutes of the mean of 60 minutes, thus:

a) Her tolerance is of (60 ±  6 minutes).

For item b, we want to find the tolerance as a percentage, that is, the percentage that the tolerance of 6 minutes is from the time of 60 minutes, hence:

P = 6/60 x 100% = 0.1 x 100% = 100%.

Hence:

b) As a percentage, her tolerance times are of 60 minutes (± 10%).

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The value of the expression 3x + 5y will be 47.

It should be noted that an equation is used in Mathematics to show the relationship the exist between different variables.

The given equations are:

x - 4y = -10 ...... i

2x + 9y= -3 ....... ii

Multiply equation i by 2

Multiply equation ii by 1

2x - 8y = -20 ...... iii

2x + 9y = -3. ..... iv

Subtract equation iv from iii

(2x - 2x) (-8y - 9y) = (-20 + 3)

-17y = -17

Then, we have to divide by the coefficient.

y = -17/-17

y = 1

Since x - 4y = -10.

We will then put the value of y = 1 into the equation

x - 4(1) = 10

x = 10 + 4

x = 14

Therefore, 3x + 5y will be:

=3(14) + 5(1)

= 42 + 5

= 47.

In conclusion, the value of 3x + 5y is 47.

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Al must score 96 in his final test to get an average of 81.

An average or mean is one number chosen to represent a group of numbers; it is often the sum of the numbers divided by the number of numbers in the group.

If every number in a list is the same number, then the average of the numbers in the list is also this number. Every one of the diverse varieties of average shares this characteristic.

The sum of the  of the numbers 2, 3, 4, 7, and 9 is 25, the average of the numbers is equal to 25 divided by 5=5.

Let Al scores x on final test.

Average score on first 3 tests=76

Total score on first 3 tests=76×3=228

Total score in 4 tests=228+x

Average score of 4 tests=(228+x)÷4

Average to be obtained in 4 tests=81

therefore we can equate the two expressions to calculate x.

(228+x)÷4=81

or, 228+x=324

or,x=324-228

or, x=96

Hence Al needs to get 96 on his final test so that his average is 81.

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Answer:

a. 1.37

b. 1.37

c. 1.37

all of them are 1.37 or they are all 137

Step-by-step explanation:

The length and width of the rectangle are: 10 inches and 5 inches.

Rectangle refers to a plane shape, as opposed to a square, with four straight sides and four right angles, particularly one with uneven neighboring sides.

Given:

To find: the length and width of the rectangle.

Finding:

Let the width of the rectangle be 'x'

Then the length of the rectangle = x + 5

Now, area of the rectangle = width (length)

=> 104 = x ( x + 5)

=> x² + 5x - 104 = 0

=> x² + 13x - 5x - 104 = 0

=> (x + 13) (x - 5) = 0

Since the lengths can't be negative, x = 5, i.e., the width of the rectangle = 5 inches

=> Length = 5 + 5 = 10 inches

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If O is the midpoint of LN and P is the midpoint of MN and if OP = 31 - 2x, and LM = 38 + 4x, then the measure of LM = 88

As per the question statement, Triangle LMN where O is the midpoint of LN and P is the midpoint of MN and if OP = 31 - 2x, and LM = 38 + 4x, we are supposed to find the measure of LM.

As O is the mid point of LN and P is the midpoint of OP the using the Mid point theorem, we can say that in Triangle LMN

[tex]OP=\frac{LM}{2}[/tex]

Substituting values,

[tex]31-2x=\frac{38+4x}{2} \\2(31-2x)=38+4x\\62-4x=38+4x \\8x = 100\\x=12.5[/tex]

LM =  38 + 4x

[tex]LM = 38 + 4(12.5)\\LM=38 + 50\\LM=88[/tex]

Hence value of LM is 88

This question is a classic example of how to solve linear equations.

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Answer:

Step-by-step explanation: His final position relative to ground level should be -3. If he starts out 6 feet under ground that is a negative number. So we have -6. Then he climbs up 14 feet. So we are going to add -6+14 which equals 8. Next it says he climbs down 11 feet. So we have a -11 and we will do 8-11=-3.

So -3 is the answer

Hope this helps.

Step-by-step explanation:

B: translated across the y axis and shifted upwards 2 units.

Answer:D

Step-by-step explanation:

Answer:B (8)

Step-by-step explanation:

OVER 50 means anything higher than 50, NOT OLDER THAN 70 means anything that's 70 or lower. So we have a range of 51-70. Now, when we look at the diagram, we can tell that there are 4 people who are 51-60 years old which fits to the range we are looking for. Same with the 4 people in the 61-70 range.

The values of A, B and C are 36, 7 and 3, respectively.

In this problem we have the addition of two positive integers that are divisible to 2. First, we proceed to decompose each element of the addition as a product of prime numbers:

252 = 2² × 3² × 7

108 = 2² × 3³

The greatest common factor is the greatest integer that can be removed from the addition by distributive property. Then, the greatest common factor is 2² × 3² = 36 and finally:

(2² × 3²) · (7 + 3)

36 · (7 + 3)

The values of A, B and C are 36, 7 and 3, respectively.

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Answer:

[tex]y = 120x [/tex]

Step-by-step explanation:

Equation of a straight line is

[tex]y = mx + b[/tex]

m= slope of line = rise/run which can be computed by taking two points on the line, finding the difference I the y coordinate values and dividing by the correspoding difference in their x coordinate values

b is the y-intercept where the line crosses the y-sxis

Looking at the graph we can see that the line crosses the y-sxis at the origin (0, 0) so the y-intercept is at y=0

The slope is determined by examining the two highlighted points (3, 360) and (2, 240)

Slope =

[tex] \frac{360 - 240}{3 - 2} = \frac{120 }{1} = 120[/tex]

So equation of line is

[tex]y = 120x + 0[/tex]

or

[tex]y = 120x[/tex]

Answer:

81.9 inches, 63.7 inches, 45.5 inches respectively

Step-by-step explanation:

Total number of units = 9+7+5 = 21

21 units = 191.1 inches

1 unit = 191.1/21 = 9.1 inches

9 units = 9.1 x 9 = 81.9 inches

7 units = 9.1 x 7 = 63.7 inches

5 units = 9.1 x 5 = 45.5 inches

Answer: 6x=40

x=40/6

x=6+2/3

Step-by-step explanation: hope this helps!!!

Step-by-step explanation:

4.50+1.50=55-15

6=40 ........

2 3/8 gallons of paint will cover 950 square feet by unitary method.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

By unitary method,

1 gallon paint covers 400 sq feet.

2 3/8 = [tex]\frac{19}{8}[/tex] gallons of paint will cover: [tex]400(\frac{19}{8})[/tex] = 950 sq. feet

Hence, 2 3/8 gallons of paint will cover 950 square feet by unitary method.

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Answer: Equation: 3x-2=4

               Solutoin: x=2

Step-by-step explanation:

[tex]x+x+x-1-1=1+1+1+1\\3x-2=4\\3x-2+2=4+2\\3x=6[/tex]

Divide both parts of the equation by 3:

[tex]x=2[/tex]

Algebra is a universal language used in communicating ideas, and it therefore improves how people can teach or learn ideas from others

Algebra is the mathematics representation of ideas, problems, situation or solutions using mathematical expressions.

Algebra makes use of numbers, variables, and operators to give value or convey information.

Algebra is therefore an indispensable communication tool that is used in all walks of life to improve understanding of disseminated information, from the original source, to the intended destination and beyond, without, losslessly losing any substance, value or understanding.

With algebra, a doctor speaking a foreign language in a remote location can perform complex and emergency operational procedures based on guidance from another doctor communicating through the internet to his exact location and a local robot that is able translate verbal information into action based on algebraic relationships.

Algebra allows the foreign doctor to obtain or look for specific health metrics and indicators.

It allows the foreign doctor to understand the cost implications as well as to avoid dangerous situations and risk factors which are best specified by algebraic relation, that is understandable to all languages, given that it is based on numbers and variables.

Algebra therefore is one of the main means through which one person can teach another or communicate ideas.

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Answer:

7,000

Step-by-step explanation:

6,842 is more than 6,500 so u round to 7,000

Answer:

m = e/c^2

Step-by-step explanation:

e = mc^2

m = e/c^2

Answer:

100 times more

Answer:

13 hours

Step-by-step explanation:

536/8=67

871/67=13

Answer:

I think 7.5 answer is right

Answer:

2.5 cm.

Step-by-step explanation:

7.5 - 5

= 2.5

If the cost of car is $26000 and it depreciates by one half every 7 years, then the cost of car will reach to $8800 after 10 years.

Given that the cost of car is $26000 and it depreciates by one half every 7 years.

We are required to find the number of years after which the cost of car will reach $8800.

Because the method of depreciation is not given in question, so we will apply straight line method of depreciation.

Depreciation is the gradual or permanent decrease in the cost of asset due to passage of time and many factors.

Depreciation of 7 years=26000*R*7

13000=26000*R*7

R=13000/26000*7

=7.14%

The cost of car will be $8800,so the depreciation charged will be 26000-8800=$17200

17200=26000*7.14/100 *N

N=1720000/26000*7.14

=9.2652

Because it is slightly larger than 9 so we can approx it as 10 years.

Hence if the cost of car is $26000 and it depreciates by one half every 7 years, then the cost of car will reach to $8800 after 10 years.

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Answer:

m = 0.5

Step-by-step explanation:

Step 1 : Take the cube root of it.

Basically what this means is that you multiply the reciprocal of it to the 0.125

Like this:

m^3 = 0.125   --------->       m = 0.125 (1/3)

Step 2: Solve

m = 0.125 (1/3)

m = 0.5

I hope this helps!

Answer:

linear

Step-by-step explanation:

Answer:

31 oz.

Step-by-step explanation:

8.37/0.27 = 31

if one ounce equals $0.27, then Maria bought 31 ounces with the $8.37

unless she had to pay taxes on it, which wasn;t mentioned so I guess she didn't pay taxes :)