If a=2, b=-1 and c= 1, then find the value of:
A- a+b-c²
B- a³-b+c
C- a-b-c

Answers

Answer 1

A- a+b-c²

=2+(-1-1)^2

=1-1

=0

B-a³-b+c

2^3-(-1+1)

=8+1+1

= 10

C-a-b-c

2-(-1-1)

=2+1-1

=2


Related Questions

PLEASE HELP ME IM TIMED
ONLY THE SECOND QUESTJON PLEQSE

Answers

Answer:

2.

A. GCF: 5x

B. GCF: 1

3.

A. 12x² + 38x - 14

B. 9x² - 6x + 1

C. 3x² + 4x - 5

Step-by-step explanation:

2.

a.

5x² - 30x

5x (x - 6)

GCF: 5x

b.

-12x² - 3xy - 4y²

GCF: 1

3.

a.

(2x + 7)(6x - 2)

2x(6x - 2) + 7(6x - 2)

12x² - 4x + 42x - 14

12x² + 38x - 14

b.

(3x - 1)²

(3x - 1)(3x - 1)

3x(3x - 1) - 1(3x - 1)

9x² - 3x - 3x + 1

9x² - 6x + 1

c.

(x + 3)(3x - 2) - (3x - 1)

3x(x + 3) - 2(x + 3)

3x² + 9x - 2x - 6

3x² + 7x - 6 - (3x - 1)

3x² + 7x - 6 - 3x + 1

3x² + 4x - 5

I hope this helps!

Consider the equations y = 3x and y = -12- x.
Complete the table of values for the equation y = 3x.
Х
-7
-5
-3

Answers

Answer:

x | -7      -5     -3  

y | -21    -15    -9

Step-by-step explanation:

y = 3x

If x = -7  then y = 3 × (-7) = -21

  x = -5  then y = 3 × (-5) = -15

  x = -3  then y = 3 × (-3) = -9

The circumference of a circle is 14 cm. Find the radius of this circle

Answers

2.23 should be the radius

Answer:

r ≈ 2.23 cm

Step-by-step explanation:

the circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

given C = 14 , then

2πr = 14 ( divide both sides by 2 )

πr = 7 ( divide both sides by π )

r = [tex]\frac{7}{\pi }[/tex] ≈ 2.23 cm ( to 2 dec. places )

The length of a rectangular frame is represented by the expression 2x 4, and the width of the rectangular frame is represented by the expression 2x 10. write an equation to solve for the width of a rectangular frame that has a total area of 120 square inches. 2x2 20x − 80 = 0 4x2 28x 40 = 0 4x2 28x − 80 = 0 x2 8x 20 = 0

Answers

The equation that can be ued to solve for the width of the rectangular frame is 2x² + 14x - 40 = 0.

What is the equation that can be used to solve for the width?

A rectangle is a 2-dimensional quadrilateral with four right angles.

Area of a rectangle = length x width

(2x + 4) x (2x + 10) = 120

Expand the brackets

4x² + 20x + 8x + 40 = 120

Add similar terms

4x² +28x + 40 = 120

4x² +28x - 80 = 0

Divide through by 2

2x² + 14x - 40 = 0

To learn more about how to calculate the area of a rectangle, please check: https://brainly.com/question/16595449

NEED HELP ASAPPPPPP!!!!!!

Answers

Answer:

D

Step-by-step explanation:

K/1 = (QD)/(AT)

(K)(A)(T) = (Q)(D)

A = QD/KT

Cathys playing a board game the game pieces are each in the shape of a triangle a triangle has a base of 1.5 inches in height of 2 inches what is the area of the pieces

Answers

Answer:

1.5

Step-by-step explanation:

Area of a Triangle = b x h /2

2 times 1.5 is 3, divided by 2 is 1.5

i should know how to do this but its spring break and im scared and bored 8th grade math

Answers

Answer:

19 is B

Step-by-step explanation:

7/8 x 8x = 7x

7/8 x 16 = 14

graph the function
f(x)=-2/3 x+1

Answers

The y intercept would be 1
The slope would be down 2 left 3

Answer:

At the bottom!

Step-by-step explanation:

I took the quiz! :)

HELP HELP I GIVE BRANLISEST

Answers

Area of triangle:-

1/2(6)(12)6(6)=36cm²

Area of rectangle (Including semicircle)

12(21)252cm²

Area of semicircle

πr²/2π(6)²/218πcm²56.52cm²

TOTAL area:-

36+252-56.52288-56.52231.48cm²

Answer:

231.48 cm²

Step-by-step explanation:

Formulae

Area of a rectangle = width × length

Area of a triangle = 1/2 × base × height

Area of a semicircle = 1/2 πr²

To find the shaded area:

Find the area of the rectangle. Subtract the area of the semicircle from the rectangle. Add this to the area of the triangle.

Area of the rectangle:

= 12 x 21

= 252 cm²

Area of the semicircle:

= 1/2 π(12 ÷ 2)²

= 1/2 · 3.14 · 6²

= 1/2 · 3.14 · 36

= 56.52 cm²

Area of the triangle:

= 1/2 x 6 x 12

= 36 cm²

Shaded area:

= area of rectangle - area of semicircle + area of triangle

= 252 - 56.52 + 36

= 194.48 + 36

= 231.48 cm²

What is the value of the expression? Show your work.

Answers

[tex]\dfrac{7^{12} \cdot 7^9}{\left(7^6 \right)^3}\\\\\\=\dfrac{7^{12+9}}{7^{18}}\\\\\\=\dfrac{7^{21}}{7^{18}}\\\\\\=7^{21-18}\\\\\\=7^3\\\\\\=343[/tex]

Answer:

342.9385905398

I’m too lazy to put in any more so ya

Step-by-step explanation:

We solve the top first.

7^12 x 7^9

13,841,287,201 x 40,353,607

558,545,864,083,284,007


The bottom is (7^6)^3

(7^6)^3

(7^18)

1,628,413,597,910,449

558,445,864,083,284,007 divided by 1,628,413,597,910,449

342.9385905398

I’m too lazy to put in any more so ya

Timothy has a model of an armoured vehicle created using a scale of 1 : 72. If the length of the model is 3.3 inches, what is the actual length of the ed. e Limit vehicle, in feet?

Answers

Answer:

Length of armoured vehicle:  19.8 ft

Step-by-step explanation:

1 is to 3.3 in as 72 is to x:

   1         72

-------- = --------

 3.3         x

This yields x = 237.6 (inches), which corresponds to 237.6/12 (feet):

Length of armoured vehicle:  19.8 ft

What is the fourth term of the geometric sequence whose first term is 7 and has a common ratio of -2

Answers

Answer:

  -56

Step-by-step explanation:

It is often easiest to find terms of a sequence by simply writing each one based on the previous one. Here, the common ratio of -2 tells you that each term is -2 times the previous term.

The first four terms are ...

  7, -14, 28, -56

The fourth term is -56.

triangle ABC is similar to triangle DEF. The ratio of the lengths of the corresponding sides of triangle ABC to triangle DEF is 2:3 what is the measure of DF

Answers

The ratio of the lengths of the corresponding sides of triangle ABC to triangle DEF is 2:3, and since side AC is the corresponding side of side DF -> Side DF = 3/2 side AC

-> Side DF = 2.5 x 3/2 = 3.75 cm.

What is the area of the playground shown? The edges of the playground meet at right angles, except for the edge whose length is not given. Show all work.

Answers

Answer:

520,000

Step-by-step explanation:

1400 x 200 = 280000

(400 + 800) x 400 /2 = 240000

240000 + 280000 = 520000

The area of the playground is 520000 square feet.

What is the area?

The area is the amount of area occupied by an object's flat (2-D) surface or shape.

Given that the edges of the playground meet at right angles, except for the edge whose length is not given.

And to find the area of the composite figure,

find all the areas separately.

There is a square with a side length of 400 feet.

A rectangle with dimensions 200 feet by 600 feet.

Another rectangle with dimensions 1400- 600 = 800 feet by 200 feet.

And a triangle with a base of 400 feet and a height of 400 feet.

The area of the playground = (400 x 400) + (200 x 600) + (800 x 200) + (1/2 x 400 x 400)

The area of the playground = 160000 + 280000 + 80000

The area of the playground is 520000 square feet.

Therefore, the area is 520000 square feet.

To learn more about the area;

https://brainly.com/question/27683633

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q . (a + y) = 67y + 93

Answers

if we are solving for why you would get an answer of
y= -93-a/66

Mariko has a bedroom wall that is shaped like a trapezoid with a height of 8 ft, a top base of 10 ft, and a bottom base of 13 ft. in the middle of this wall is a circular window whose radius is 2 ft. what is the area of the wall without the window? use 3.14 for pi. enter your answer as a decimal in the box. ft²

Answers

Answer:

79.44 ft²

Step-by-step explanation:

Area (wall)

Area (trapezoid) - Area (circle)1/2 x (10 + 13) x 8 - 3.14 x 2²4 x 23 - 12.5692 - 12.5679.44 ft²

What is
8 divided by 4 (3-1)

Answers

Answer:

[tex]8 \div 4(3 - 1)[/tex]

let's follow BODMAS for solving this expression ~

the BODMAS rule states the order for solving a given question and the order lies in its full form which is as follows ~

B - brackets

O - of

D - division

M - multiplication

A - addition

S - subtraction

using the order , let's move to the expression given now ~

[tex]\dashrightarrow \: 8 \div 4(3 - 1) \\ \\ as \: the \: rule \: states \: , \: we \: will \: solve \: the \: brackets \: first \\ \\\dashrightarrow 8 \div 4(2) \\ \\ brackets \: again \\ \\ \dashrightarrow \: 8 \div 8 \\ \\ and \: finally \: divison \\ \\ \dashrightarrow \: 1[/tex]

hope helpful :D

The value of expression 8 divided by 4 (3-1) would be equal to 1

How can we interpret the division?

When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.

We need to find the expression of 8 divided by 4 (3-1)

A negative divided by a negative is positive, therefore,

8 / 4 (3-1)

8 / 4(2)

8/8 = 1

Therefore, The value of 8 divided by 4 (3-1) is; 1

Learn more about division here:

brainly.com/question/26411682

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I need an answer for all those please!

Answers

Ok so, number one is ……………….number two is ……………….

Please answer the question

Answers

Answer:

a = 104

Step-by-step explanation:

126 + 26 = 152

360 - 152 = 208

208 / 2 = 104

104 = a

Hope this helps :)

(If you need the explanation in words just let me know)

Step-by-step explanation:

Let's find

add up

a+a+26+126=3602a+152=3602a=360-1522a=208a=104

I need answers NOW!
BRAINLIEST FOR WHO CAN ANSWER!

Answers

Where is the diagram though???

express 1.284 in form of p/q

Answers

Step-by-step explanation:

1.284=1284/1000

divide both by 4

=321/250

Mrs. Hall spends 1 hour and 30 minutes doing yardwork. She spends 40 minutes cutting the grass. She divides the rest of her time evenly between planting a new bush and pulling weeds. How long does she spend pulling weeds?

Answers

Answer:

1 hour and 5 minutes

Step-by-step explanation:

1 hour equals 60 minutes

60 plus 30 equals 90

90 plus 40 equals 130

130 divided by 2 is 65

65 is turned into 1 hour and 5 minutes

Hope this helps

Welcome to Brainly Community


Drag each tile to the correct box. Not all tiles will be used.
The table represents the balance of Sylvia's loan, y, over a period of 24 months, x. She used technology to create the scatter plot shown and
determined the best fit equation to model the data, y=-382.05x +
25,077.40. Determine how long it will take to reach the given balances

Answers

Using the given linear function, it is found that:

The balance will be of approximately $17,000 in month 21.The balance will be of approximately $0 in month 66.

What is the function for the balance?

The balance after x months is modeled by:

y = -382.05x + 25077.4.

Hence, it will be of approximately $17,000 at x for which y = 17000, hence:

17000 = -382.05x + 25077.4

x = (25077.4 - 17000)/382.05

x = 21.

We apply the same logic to find when it will be of approximately 0.

0 = -382.05x + 25077.4

x = (25077.4 - 0)/382.05

x = 66.

More can be learned about linear functions at https://brainly.com/question/24808124

find the area please and thank you

Answers

Answer:

60 cm²

Step-by-step explanation:

area of trapezium = 1/2(a + b) × h

= 1/2(6+14) × 6

= 20/2 × 6 = 10 × 6

= 60 cm²

The reporter wants to test the store's claim against the alternative hypothesis that the wait time is actually greater than 60 minutes. what is the critical value for z for a hypothesis test using a 5% significance level? z* =

Answers

The critical value for z for a hypothesis test using a 5% significance level is 1.65

It is given that the reporter wants to test the store's claim against the alternative hypothesis that the wait time is actually greater than 60 minutes.

It is required to find the critical value for z for a hypothesis test using a 5% significance level.

What is a normal distribution?

It is defined as the continuous distribution probability curve which is most likely symmetric around the mean. At Z=0, the probability is 50-50% on the Z curve. It is also called a bell-shaped curve.

We have a hypothesis H1 that wait time is actually greater than 60 minutes.

H1(T>60)

This is the case of the right-tailed hypothesis.

We have a significance level = 5% ⇒ 0.05

The statistics follow a normal distribution curve

Critical value = 1.6449 ≈ 1.65  (from the table at 5% significance level)

Thus, the critical value for z for a hypothesis test using a 5% significance level is 1.65

Know more about the normal distribution here:

brainly.com/question/12421652

Given:
f(x)=x^2
g(x)=x-1
Find f(g(2))+g(f(-1))

Answers

Answer:

-1

Step-by-step explanation:

First, we need to work out the left-hand side.

find g(2) → g(2) = 2 - 1 which is 1next, find f(1) → f(1) = 1³ which is 1

Now, we can work out the right hand side.

find f(-1) → f(-1) = -1³ which is -1then, find g(-1) → g(-1) = -1 - 1 = -2

Finally we can work out the full sum: 1 + -2 = -1.

Hope this helps!

Is the following shape a rectangle? How do you know?

Answers

Answer:

B.Yes,the adjacent sides are perpendicular,and the opposite sides are parallel

Answer:

B. Yes, the opposite sides are perpedicular, and the opposite sides are parallel

Step-by-step explanation:

This is because for a rectangle to be a rectangle, it has to have four sides whose opposite sides are equal (so parallel) and adjacent sides meets at 90° (so perpendicular), both of which this shape is shown to be.

Hope this helps. If you have any further questions, let me know!

- profparis

What is the surface area of a square pyramid with a base with a width 6 and a triangular height of 8?

Answers

Answer:

A≈138.53

Step-by-step explanation:

A=a^2+2a √a^2/4+h2

6. A pond has 150 fish, and the population
decreases by 8% each day. Find the
population after 4 days.

Answers

102
Explanation: 8% of 150 is 12. 12 x 4= 48. 48-150= 102

Leo buys pasta for 12 people,
(a)
Each person eats 100 grams of pasta.
One packet has 500 grams of pasta.
How many packets must Leo buy?

Answers

Answer:

3

Step-by-step explanation:

If each packet has 500 grams, and each person eats 100 grams, then one packet will feed five people (500/100=5). Since he will be buying pasta for 12 people, he will need to buy three packets, because 3*500=1500 grams. While there is some extra, buying only two packets would result in not enough pasta.

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