Evaluate this expression for a=2 and b=3. (a+5)-b/b-4+2(b+3)/a

Answers

Answer 1

Answer:

16

Step-by-step explanation:

[tex](a+5)-\frac{b}{b-4}+\frac{2(b+3)}{a}\\\\a=2\\\\b=3\\\\(2+5)-\frac{3}{3-4}+\frac{2(3+3)}{2}\\\\=7-\frac{3}{-1}+3+3\\\\=7+3+6\\\\=16[/tex]


Related Questions

Tired asl I need some help, thanks.

Answers

Answer:

C

Step-by-step explanation:

y=5-2x

3x-y=15

Substitute

3x-(5-2x)=15

the answer should be the 3rd choice.

Select all ordered pairs that satisfy the function y=4x+3.

Answers

I suppose that you should have given some pairs to choose from.

Anyway, I can tell you how to do it. Given a pair [tex](a,b)[/tex], you have to substitute [tex]a[/tex] and [tex]b[/tex] to [tex]x[/tex] and [tex]y[/tex] respectively, and see if you get something true.

For example, the pair [tex](1,7)[/tex] satisfies the function, because the substitution yields

[tex]7=4\cdot 1+3[/tex]

which is true. On the other hand, the pair [tex](19,3)[/tex] doesn't satisfy the function, because

[tex]3=4\cdot 19+3[/tex]

is clearly false.

If three empanadas and two drinks cost $9, and four empanadas and one drink costs $9.50, how much does a drink cost?

Answers

Answer:

A drink cost 1.50

Reasoning:

3×2=6

6+1.50=7.50

7.50+1.50=9

4×2=8

8+1.50=9.50

Determine the value of x and y

Answers

where is the question , without question how can we find the Values

Awww please just determine the function equation, y intercept and slope.

Answers

Answer:

y = 3x + 45  is the function equation of y intercept and slope.

Eber ran 3 miles. He stopped to take a break every {3}{4) mile.How many times did Eber stop, including his final stop at the end of the run?

Answers

Answer:

4 times

Step-by-step explanation:

The total model is 3 miles, divided by 3/4 equals the multiplication problem 3/1 times 3/4 but use the reciprocal of 3/4 which is 4/3 so it would be 3/1 times 4/3 which is 12/3 which is equivalent to 4. :)

There are 4 times did Eber stop.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Eber ran 3 miles.

And, He stopped to take a break every 3/4 mile.

Now,

Let number of times stop = x

So, We can formulate;

⇒ 3/4x = 3

⇒ x = 3 × 4 / 3

⇒ x = 12/3

⇒ x = 4

Thus, There are 4 times did Eber stop.

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HELPPPPPPP!!!!!!!!!!!!

Answers

Answer:

C

Step-by-step explanation:

As you saw in my comments, I explained it.

Thank you for letting me help!

Cheers!

- Kay :)

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Answers

Answer: so 5 out of 5 is like if it said 100 out of 100

soooo the answer is 100% ;)

Step-by-step explanation:

HELP PLEASE EXPERTS! the question is in the picture

Answers

Answer:

B) 6

Step-by-step explanation:÷

The area of a triangle = 1/2 b* h or [tex]\frac{b*h}{2}[/tex]

Line AB = 4

Line AC = 3

Line BC = x

b = 3

since it is at a right angle,

h = 4

[tex]\frac{3*4}{2}[/tex] = 6

A = 6

Area of a triangle = b•h•1/2

base = 3
height = 4

3•4•1/2 = 6

what is -5x + 3y= 12 in slope intercept form?

Answers

Answer:

y = (5/3)x + 4

Step-by-step explanation:

-5x + 3y = 12 (What you start with)

3y = 12 + 5x (Adding 5x to both sides)

y = (5/3)x + 4 (Dividing the equation by 3)

Which statements are ture about 5/6 and 7/10 ?Check all that apply

Answers

Answer:

is that all?

Step-by-step explanation:

isnt there more to the problem?

Marshall has $0.34 in dimes and pennies. He has 7 coins altogether. How many coins of each kind does he have?

Answers

Dimes are 0.10 each

Pennies are 0.01 each

You need 4 pennies to get the 0.04

Then you would have 3 dimes .

3 x 0.10 = 0.30

4 x 0.01 = 0.04

0.30 + 0.04 = 0.34

The figure is made up of a square and a rectangle. Find the area of the shaded region.

Answers

first we do

square is length 6 so base =6

10-6=4

the rectangle is 2 by 4

base=4

square is 6 by 6

rectangle is 4 by 2

split the triangles up

area of triangle=1/2base times height

rectangle triangle base=4

height=2, area=1/2 times 2 times 4=4

square triangle

flip 90 degrees clockwise so we have base=2

height=6

area=1/2 times 2 times 6=6

add

4+6=10

total area=10m^2

Yeah he got it right

find the unit rate round to the nearest hundredth calculator $170 for 14ft2

Answers

Answer:

don't expect people to help when you comment bs under their questions for points, mad weird

Jaxon is deciding between two landscaping companies for his place of business. Company A charges $45 per hour and a $150 equipment fee. Company B charges $35 per hour and a $200 equipment fee. Let
A
A represent the amount Company A would charge for
t
t hours of landscaping, and let
B
B represent the amount Company B would charge for
t
t hours of landscaping. Write an equation for each situation, in terms of
t
,
t, and determine the interval of hours,
t
,
t, for which Company A is cheaper than Company B.

Answers

Answer:

A

Step-by-step explanation:

It charges cheapeer

Demarcus' workout playlist consists of classic rock songs and rap songs.
His playlist contains a total of 47 songs,
Which of the following statements represent the number of classic rock
and rap songs on Demarcus' playlist? Select all that apply.
x+y = 47
24 and 24
43 and 4
x = y + 47
y=-x+ 47
13 and 34

Answers

It is (13 + 34), (43 + 4). Hope this helps!!! It couldn’t be the other ones because they don’t include all of the numerals.

A culture started with 6,000 bacteria. After hours, it grew to 7,200 bacteria. Predict how many bacteria will be present after 19 hours. Round your answer to the nearest whole number​

Answers

Answer:

that would be c i had that ques 5 mns ago

Step-by-step explanation:

Answer:

It’s 3600

Step-by-step explanation:

In a Create of 30 eggs
only 60 % is good how many
are bad?

Answers

Answer:

In my point of view 40% are bad

What is the volume of a cylinder with a radius of 2 cm and a height of 8 cm?​

Answers

Answer:

V = 100.531 cm³

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Geometry

Volume of a Cylinder: V = πr²h

Step-by-step explanation:

Step 1: Define Variables

r = 2 cm

h = 8 cm

Step 2: Find Volume

Substitute [Volume]:                    V = π(2 cm)²(8 cm)Exponents:                                   V = π(4 cm²)(8 cm)Multiply:                                        V = π(32 cm³)Multiply:                                        V = 100.531 cm³

Question 24 of 25
What is the measure of R?

Answers

68°
Because the two sides are equal, then the angles will be as well
I believe the answer is 68 degrees
Since both corresponding sides are the same on the isosceles triangle, the angles will also be the same

If I’m not mistaken

In a particular triathlon the athletes cover 1/24 of the total distance by
swimming, 1/3 of it by running, and the rest by bike. What is the ratio of
the distance covered by bike to the distance covered by running?​

Answers

Answer:

15/8

Step-by-step explanation:

Let "d" be the total distance, that is, the distance for swimming (s), running (r) and going by bike (b).

d = s + r + b   [1]

1/24 of the total distance is covered by  swimming.

s = 1/24 d   [2]

1/3 of the distance is covered by running.

r = 1/3 d  [3]

If we replace [2] and [3] in [1], we get

d = 1/24 d + 1/3 d + b

b = d - 1/24 d - 1/3 d

b = 24/24 d - 1/24 d - 8/24 d

b = 15/24 d = 5/8 d

The ratio of  the distance covered by bike to the distance covered by running is:

b/r = (5/8 d)/(1/3 d) = 15/8

Wall-mart had a laptop for $500. Best Buy was selling the same laptop for 15% more. What is price of the laptop at Best Buy?

Answers

Answer:

575

Step-by-step explanation:

15% of 500 = 75

500 + 75 = 575

Answer:

$425

Step-by-step explanation:

500*0.15=75

500-75=524

Solve the linear system using a table.
7a -b=-1
-4a - 2b = -2


A. (0,0)
B. (0,1)
C. (1,0)
D. (1,1)

Answers

The correct answer is:

B. (0,1)

Please answer I will give branliest

Answers

Answer:

Step-by-step explanation:

assuming that weekends are only sat and sunday

24 students

or

if were assuming that friday is included

30 students

hope this helps <3

Answer:

24 students prefer weekend days C:

Step-by-step explanation:

Ten percent of the items produced by a machine are defective. Suppose that twenty items are randomly chosen. Use this information to answer the following three questions. What is the probability that exactly 3 of the items are defective

Answers

Answer:

15%

Step-by-step explanation:

if 10% is to 20 then 15% is to 30

In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:

Answers

Answer:

Analysis of variance

Step-by-step explanation:

The appropriate statistical tool for this is the analysis of variance. The analysis of variance, also known as the ANOVA, is a statistical method which has the ability to separate data from observed variance into various components which is then use for more tests.

The anova gives an analysis of the differences that are in the group means of a sample.

The appropriate statistical test for comparing these means is Analysis of variance.

ANOVA stand for Analysis of variance. It is a statistical models and its associated estimation procedures are used to analyze the differences among means.

It simply provides a statistical test for two or more population to check if the means are equal or not, and therefore generalizes the t-test beyond two means.

Hence, the appropriate statistical test for comparing these means is Analysis of variance.

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HELP QUICK! 20 POINTS PLEASE GET IT CORRECT

Answers


We can conclude that Collin will have £3691.41 in his account after 10 years.

Find x =
Please help I’ll give brainiest answer

Answers

Answer:

The Answer is 6

Need help with these following questions

Answers

Answer:

there are 13 of them brother from another mother

what is parallel to y=3x+1
you can only use the numbers 3,-2,1,4,-1,0,2,5 and put it in y= x +

Answers

Answer:

y=3x+1

Step-by-step explanation:

A parallel line has the same slope as the other line.

y=mx+b, m is the slope

Thus in y=3x+1, m =3

y = 3x + b

plug in points (1, 4) to determine b

4 = 3(1) + b

4 = 3 + b

subtract 3 on both sides

4 - 3 = b

b = 1

y = 3x + 1

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