If x = 3 and y = 5, work out the value of a) 4x - 2y
b) 2x2 + 3y2

If X = 3 And Y = 5, Work Out The Value Of A) 4x - 2yb) 2x2 + 3y2

Answers

Answer 1

Answer:

A) 12-10

B)36+225

Step-by-step explanation:

A) 3x4=12, 5x2= 10= 12-10

B) 3x2=6x6=36, 3x5=15x15=225=36+225

Answer 2

For x = 3 and y = 5 the values of the given expressions are (a) 4x - 2y = 2 and (b) 2x² + 3y² = 93.

What is substitution?

Substitution is a mathemaical technique for replacing variables with specific or covnient values according to the context.

When the values of variables are given to solve an equation we just have to replace those numerical values in place of the given variables.

Given, x = 3 and y = 5.

∴ 4x - 2y is,

= 4(3) - 2(5).

= 12 - 10.

= 2.

And

2x² + 3y².

= 2(3²) + 3(5²).

= 2(9) + 3(25).

= 18 + 75.

= 93.

learn more about substitution here :

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Related Questions

Dara's computer monitor is 20 inches wide and 12 inches high. Which measurement is closest to the length of the diagonal of Dara's monitor?

A) 15 inches

B) 16 inches

C) 23 inches

D) 32 inches

Answers

B) 16 inches because
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Answer:

C) 23

Step-by-step explanation:

If the computer monitor is 20 inches wide, and 12 inches high, we can solve for the diagonal by using the Pythagorean theorem.

Let a = the width, let b= the height, let c = the diagonal.

a^2 + b^2 = c^2

20^2 +12^2 =c^2

400 + 144 = c^2

544 = c^2

C is approximately equal to 23 inches.

Let me know if this helps!

Someone plz help I already know the answer put how can I put the diagram can you guys help me can u put the picture how u did it plz giving brainliest

Answers

Answer:

therws this random chart from the internet, I think that's what they want, but not sure

Please help, and i will mark you BRAINLIEST
Mary is baking cookies, and the recipe calls for 1 1/2 cups of sugar. If she has 6 1/3 cups of sugar left after she bakes the cookies, how much sugar (s) did she have before she started baking cookies? Which equation would you use to solve for (s)? *

s + 1 1/2 = 6 1/3
6 1/3 - s = 1 1/2
s - 1 1/2 = 6 1/3
1 1/2 + s = 6 1/3

Answers

Answer: 4 5/6

Step-by-step explanation: 4 5/6+ 1 3/6(aka 1 1/2)= 6 2/6 (aka 6 1/3)


Work:
Using the formula of Cdm or C=20, determine the
circumference of the shape.
BICYCLES A bicycle tire has
a radius of 14 inches. How
far will the bicycle travel in 40
rotations of the tire? Round to
the nearest tenth.
131 in.
Diameter:
Radius:

Answers

Answer:

Radius-16

Diameter-32

Step-by-step explanation:

I think

evalie is making snak bags for her class she can fill 5/8 snak bags 1 2/3 cups of pretezles how many cups of preteele did she need

Answers

Answer:

5/12 cups

Step-by-step explanation:

1 bag = 2/3 cup

5/8 bag = 2/3 × 5/8

= 10/24 = 5/12

Find the area of the figure. Round your answer to the nearest tenth.

Answers

Answer:

11.5 m^2

Step-by-step explanation:

The area of a parallelogram is base * height, so you have to find the height.

You can see on the left there's a 30 - 60 - 90 triangle with a hypotenuse of 4. Using the proportion rule, you know that the 2nd side is 4/[tex]\sqrt{3}[/tex] = [tex]4\sqrt{3}/3[/tex].

Then, find the area, so do base * height = 5 * [tex]4\sqrt{3} /3[/tex] = [tex]20\sqrt{3}/3[/tex].

Put this in a calculator and you get: 11.5 m^2

Mr farmer has 33 students in her class this is 11 more students than Ms Prince has how many more students does Miss Prince have​

Answers

Answer:

I believe its 22 if im not mistaken

Step-by-step explanation:

One rabbit eats 8 carrots every day.

How many carrots does a rabbit eat in 7 days?

Answers

Answer:

56 carrots

Step-by-step explanation:

Because 7 x 8 is 56

Ana cuenta una noticia a 5 personas. A la hora siguiente, cada una de ellas se la cuenta a otras 5, y así sucesivamente. ¿Cuánto tardan en conocerla 3 000 personas?

Answers

Answer:

3 horas si se toma apartir de lo que se dice en el problema

PLEASE HELP. I need this as soon as possible!!! I will give brainiest and lots of points.

A number is at most 0 and greater than −10
The least possible integer value of this number is negative 9
The greatest possible integer value of this number is.

Answers

Answer:

Greatest possible integer value is 0

Step-by-step explanation:

idek i did it in my head

Type your response in the box.
Solve the equation x^2 – 5 = √ x – 2 by using successive approximation-

Answers

9514 1404 393

Answer:

  x ≈ 2.367796

Step-by-step explanation:

There are a number of ways to use "successive approximation" to find a solution to an equation. You have not specified the method or the required accuracy.

__

One of the more tedious is the bisection method, which computes the value of the function at the midpoint of an interval, to see if that midpoint should be a new interval bound. This method requires about 3 iterations per decimal place of the answer.

Another method is the secant method. It computes the x-intercept of the secant line joining the points at the ends of the interval containing the solution. The function value at this x-intercept is used to see if that point should be a new interval bound. This method converges slightly faster than the bisection method. It is speeded by adjusting both ends of the interval.

Newton's method iteration converges at a quadratic rate, nearly doubling the number of correct decimal digits at each iteration. This works in a fashion similar to the secant method, except the x-intercept is computed from the function value and its derivative, not from points at the ends of an interval.

__

We assume you want the solution to ...

  x^2 -5 = √(x -2)

This is conveniently reformulated to ...

  x^2 -5 -√(x -2) = 0

so that we're seeking a zero of the function on the left.

The attached shows several iterations of the secant method. The function g is used to compute the x-intercept point on the line between (x1, f(x1)) and (x2, f(x2)). Then f(g( )) computes the function value at that x-intercept. We have used that to decide what the next interval limits (x1, x2) could be.

Our final guess at x is ...

  x ≈ 2.367796 . . . . secant method

which gives an error less than 10^-5 between the left- and right-sides of the equation.

_____

Additional comments

At the bottom of the attachment is the Newton's Method iterator. The nice thing about this graphing calculator is that it displays the result of computing h(x) even as the value of x is being typed. This means you can type what you see and achieve full calculator precision for the solution in basically one pass. This method gives x = 2.36779701571.

Some hand-held graphing calculators have a derivative function built-in, so it is practical to use them to perform Newton's method iteration in substantially the same way.

Find two integers whose sum is -3 and product is -70

Answers

Answer:

(-10) and 7

Step-by-step explanation:

-3 = (-10) +(7)= -3 (because + and - give you a - )

-70 = (-10) x (7)= -70

hope it answers your question correctly.

A line passes through the point (-9,8) and has a slope of -4/3. Write an equation in point slope form for this line​

Answers

Answer:

y-8=-4/3(x+9)

Step-by-step explanation:

y-y1=m(x-x1)

y-8=-4/3(x-(-9))

y-8=-4/3(x+9)

PLS HELP!!!!!!!
30 MINS LEFT!!!!!!!
WILL MARK BRAINLIEST!!!!
JUST ANSWER THE CORRECT ANSWER!!!


Which property was used to simplify the expression?
3C+9+4C = 3C+4C+9
A. distributive property
B. commutative property
C. associative property
D. inverse property

Answers

Tis communitive property.

Okeh bye

The commutative property states that the numbers on which we operate can be moved or swapped from their position without making any difference to the answer. The property holds for Addition and Multiplication, but not for subtraction and division.

B. commutative property

o.o

Cindy goes to school in a 7-story building. Her first class is on the first floor.
She goes up 3 floors for her second class and down 2 floors for her third
class. For her fourth class Cindy goes up 5 floors and for her final class
Cindy goes down 1 floor. What floor is Cindy on during her final class?

Answers

1: 1
2: 1 + 3 = 4
3: 4 - 2 = 2
4: 2 + 5 = 7
5: 7 - 1 = 6

A person earns ​$17,000 one year and gets a​ 5% raise in salary. Calculate the new yearly salary using a percent greater than 100.

Answers

Answer:

$17850

Step-by-step explanation:

Adding 5% of a number to that number is the same as taking 105% of the number.

Taking 105% of a number is the same as multiplying it by 1.05

This means that 105% of 17,000 is:

17,000*1.05 = 17850

Plz help!
I have 30 minutes to complete it !!

Answers

Answer:

kite: a quadrilateral whose two pairs of adjacent sides are congruent and whose opposite sides are not congruent.

parallelogram: a quadrilateral in which both pairs of opposite sides are congruent.

polygon: in a plane, a closed figure formed from three or more line segments such that each segment intersects exactly two other segments, one at each endpoint, and no segments with a common endpoint are collinear.

quadrilateral: a polygon with four sides. [quad is a prefix meaning "four"]

rhombus: a quadrilateral with four congruent sides.

Step-by-step explanation:

I know I ran a tad late. I'm sorry. But I helped anyways, so you can turn it in. My hint for this was to use context clues. Please, have a good day!

Please help ASAP!

There are 10 girls and 16 boys in a class. The teacher has sticks with each students name on the bag. What is the probability of selecting sticks with a boy’s name and then a girl’s name if the first stick is not replaced?

Answers

The probability of pulling a boys name first is 8/13. Then the probably of pulling a girls second is 2/5.

What is 312\245 simplified?

Answers

Answer:

127/100

Step-by-step explanation:

Solve for x

-4 + x _< 9

Answers

Answer:

Step-by-step explanation:

what is the underscore for?

Answer:

your answer should be x < 13

Step-by-step explanation:

Hope this helps and have a nice day :)

the cube root of a number is 6. find the number​

Answers

Answer:

the number is 216

Step-by-step explanation:

if the cube root of the number is 6 then you have to do 6^3

6 x 6 x 6 = 216

Answer:

216

Step-by-step explanation:

6 · 6 · 6 = 216

The cost for a pair of jeans to the store is $5.50. The markup percent is 75%. What is the selling price?

Answers

Answer:

$9.63

Step-by-step explanation:

100 + 75 = 175

5.50/100 X 175 = 9.625

monetary unit round to 2dp

9.63

4. Which property of operations is used to write 15x + 9 as 9 + 15x?

Answers

Solution: The commutative property of addition states that when two numbers are being added, their order can be changed without affecting the sum.


Find the GCF and rewrite and equivalent expression using
Distributive Property
24-96

Answers

Answer:

GCF(24, 96) = 24

Step-by-step explanation:

Steps:

Prime factorization of the numbers:

24 = 2 × 2 × 2 × 3

96 = 2 × 2 × 2 × 2 × 2 × 3

GCF(24, 96)

= 2 × 2 × 2 × 3

= 24

(hope this helps can i plz have brainlist :D hehe)

An item has a listed price of $95. If the sales tax rate is 3% ,how much is the sales tax (in dollars )

Answers

Answer:

2.85

you multiply the price by the rate translated to a decimal

so

95*.03

=

2.85

Can somebody help me please? thank you.

Answers

13/16 it goes up by 16th
hope this helps :)

Ms. Rios mowed

2

7

of her lawn. Her son mowed

1

4

of it. Who mowed most of the lawn? How much of the lawn still needs to be mowed?
(little sister needs answer)

Answers

Answer: I believe Ms. Rios mowed more, hope this helps!

what is the value of p so that the expession 6x+3-(8x-5) is equivalent to (px+8)?​

Answers

Answer:

-2

Step-by-step explanation:

The first equation simplifies to -2x+8 so p should be replaced with -2

The value of p so that the expression 6x+3-(8x-5) is equivalent to (px+8) is, -2

What are expressions?

An expression is a sentence with at least two numbers or variables having mathematical operation. Math operations can be addition, subtraction, multiplication, division.

For example, 2x+3

Given that,

An expression,  6x+3-(8x-5)

another expression, (px+8)

Value of p for which both the expressions are equivalent = ?

So now, we can compare both the expressions

⇒   6x+3-(8x-5)

⇒  6x+3-8x+5

⇒  -2x+8

if compare it with (px+8)

then, p = -2

Hence, the values of p is -2

To know more about Expressions check:

brainly.com/question/16804733

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What is the value of x of the acute angles of a right triangle measure 8x and 12x?
A.2
B. 4.5
C. 7
D. 9.5

Answers

Answer:

B. 4.5

Step-by-step explanation:

The sum of all interior angles of a triangle is 180 degrees

Since we know it is a right triangle, there is one angle that is 90 degrees

The acute angles are given as 8x and 12x

Add them up and isolate x to find the value of it

8x + 12x + 90 = 180   1. Add like terms

20x + 90 = 180           2. Subtract by 90 on both sides

20x = 90                       3. Divide by 20 on both sides

x = 4.5

I need help ASAP! Thank you!

Answers

sin60=x/44
44sin60=x
X=38.1
D is the answer: 22 root 3
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