Gía trị của biểu thức A = ( 2x - 5)x(2x +5) - 4 x (x+2)x(x-2) + (10x + 7)

Answers

Answer 1

Answer:

language

Step-by-step explanation:


Related Questions



Which of the following comparisons is NOT true?
A 5,125.5 > 5,125.081
B 617.07 > 617.058
C 15.88 < 15.98
DC 14,109 > 14,21

Answers

Answer:

.

Step-by-step explanation:

Answer:

D.) is not true, though you didn't finish the whole number we can see that 14,109 is not greater than 14,21(0)... I hope this helped.

Kenya picked 18 flowers from her garden. If 3/5 of flowers in her garden remain unpicked, how many flowers are still in her garden?

Answers

Answer:

I think it's 27

Step-by-step explanation:

because if she picked 2/5 of the flowers if u divide 18 by 2 u get 9 so that's 1/5 I think and then if u times that by 3 u get 27 and like that's the 3/5

if Devaughn is 13 years older than Sydney. and The sum of their ages is 67 what is sydney's age

Answers

Answer:

27

Step-by-step explanation:

Sydney's age = x

x + 13 = Sydney's age

67 - 13 = 54

54 divided by 2 = 27

The graph of linear function k passes through the points (-3, 0) and (1, 8). Which statement must be true?
A. The x-Intercept of the graph of k is 8.

B. The slope of the graph of k is 2.

C. The graph of k passes through (-1, -8).

D. The zero of k is 3.

Fr someone help me

Answers

Answer:

B. The slope of the graph of k is 2.

Step-by-step explanation:

Find the equation of the line.

The slope is:

m = (8 - 0)/(1 + 3) = 2

The y-intercept is:

0 = -3*2 + bb = 6

The line is:

y = 2x + 6Now lets look at the answer options

A. The x-Intercept of the graph of k is 8.

The x- intercept is -3, False

B. The slope of the graph of k is 2.

m = 2, True

C. The graph of k passes through (-1, -8).

-8 = 2(-1) + 6-8 = 4, False

D. The zero of k is 3.

x = 0 ⇒ y = 0+ 6 = 6,  False

The slope of the graph of k is 2.

The correct statement is B.

Given that the graph of linear function k passes through the points (-3, 0) and (1, 8).

We need to check which option is correct.

To determine the correct statement, let's first find the equation of the linear function k using the given points (-3, 0) and (1, 8).

The slope of a linear function is given by:

slope = (change in y) / (change in x)

Using the points (-3, 0) and (1, 8):

slope = (8 - 0) / (1 - (-3))

slope = 8 / 4

slope = 2

So, the slope of the graph of k is 2.

Now we can write the equation of the linear function using the slope-intercept form: y = mx + b, where m is the slope, and b is the y-intercept.

Using the point (1, 8):

8 = 2 × 1 + b

8 = 2 + b

b = 8 - 2

b = 6

Now, the equation of the linear function k is:

y = 2x + 6

Now, let's evaluate the given statements:

A. The x-Intercept of the graph of k is 8.

To find the x-intercept, we set y = 0 and solve for x:

0 = 2x + 6

2x = -6

x = -3

The x-intercept is -3, not 8. So statement A is false.

B. The slope of the graph of k is 2.

We already found earlier that the slope of k is 2. So statement B is true.

C. The graph of k passes through (-1, -8).

Let's check if (-1, -8) satisfies the equation of k:

-8 = 2 × (-1) + 6

-8 = -2 + 6

-8 = 4

The equation is not satisfied, so statement C is false.

D. The zero of k is 3.

To find the zero of k (the x-value where y = 0), we set y = 0 and solve for x:

0 = 2x + 6

2x = -6

x = -3

The zero of k is -3, not 3. So statement D is false.

In conclusion:

Statement A is false.

Statement B is true.

Statement C is false.

Statement D is false.

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2 3/5 x 1 3/7=

i need help

Answers

Answer:

26/7 or 3 5/7

Step-by-step explanation:

Ronald wanted an allowance. his father gave him a choice of getting it on a weekly or on a daily basis. He said he would either pay him $1.25 a week or pay him in the following manner for a week: On Monday he would give him $0.01; On Tuesday $0.02; On Wednesday $0.04 and on through Sunday. What would you tell Ronald to do so he can get more allowance?

Answers

Step-by-step explanation:

Well the addition of ($0.01+$0.02+$0.04) would be $0.07

And he since he can get $1.25 a week if he chose the weekly option

Since $1.25>$0.07

I would tell Ronald to choose the weekly option for getting more allowance.

Given the function g ( x ) = x 2 + 10 x + 20 g(x)=x 2 +10x+20, determine the average rate of change of the function over the interval − 9 ≤ x ≤ − 3 −9≤x≤−3.

Answers

Step-by-step explanation:

the average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

so,

(g(-3) - g(-9)) / (-3 - -9)

g(-3) = (-3)² + 10×-3 + 20 = 9 - 30 + 20 = -1

g(-9) = (-9)² + 10×-9 + 20 = 81 - 90 + 20 = 11

-3 - -9 = -3 + 9 = 6

(-1 - 11) / 6

-12/6 = -2

the average change rate in this interval is -2 (or fully -2/1).

guys pls help me!!!!!!!

Answers

Your answer would be 154*. Reason being, if there are two parallel lines and a line running through them, you will only have 2 types of angles. The labeled 154* tells us that the angle to its right would be 26 degrees. Making  line m = to 180 degrees at that angle. Then if you did the same thing with line t, you would get angle x to be equal to 154 degrees.

It is complicated like that, or as simple as just taking the 154 and saying that x has the same angle. Due to the fact that both angles are adjacent, they are the same.

WHat is the square root of 76?

Answers

Answer:

It is 8.72 if it needs to be rounded up. If not, it is 8.71779788708

Step-by-step explanation:

A total of 176 valves were used for 8 cars as
they were being assembled. The same number
of valves were used for each car. How many
valves were used for each car?

Answers

ANSWER:

22

EXPLANATION:

BECAUSE IF YOU DIVIDE 176 TO 8 THE ANSWER WILL BE 22.

176÷8=22

HOPE IT HELPS YOU

divide 3x^3 -2x^2 -61x -20 by x-5

Answers

179/x-5 is the answer

5. The volume of a cube is 125 cubic centimeters. How many centimeters long iseach edge of the cube?5 centimeters11 centimeters15 centimeters42 centimeters

Answers

Answer: 5 cm

Step-by-step explanation:

A cube means all sides have an equal length. therefore you need to find what number times itself 3 times will equal 125

to do this you can also do the cube root(∛) of 125 which will give you 5 cm

to verify your answer, simply do 5 x 5 x 5 which is 125

Subtract and write your answer as a mixed number 9 4/5 - 7 1/2

Answers

The answer is 2 3/10

Please help me asap with explanation please ​

Answers

Answer:

[tex] \sqrt{5 \times 5 \times 2 \times {x}^{2} \times {y}^{2} \times y} = \\ 5xy \sqrt{2 \times y} [/tex]

If <1 and <2 are complementary angles, and m<1 = 74", find m<2
what’s the answer?

Answers

Answer:

m<2=16

Step-by-step explanation:

How much time is between 9:25am then return home at 7 :10pm

Answers

Answer: the answer is 9 hours 45 minutes

5x+3x-6=6x+12 what is the answer

Answers

Answer:

x=9

Step-by-step explanation:

1. Combine like terms

2. Add 6 to both sides

3. Simplify

What is the solution to the equation?



-6x - 3 = 21

Answers

Answer:

x = -4

Step-by-step explanation:

−6 − 3 = 21

−6 − 3 + 3 = 21 + 3

= −4

The solution to the equation -6x - 3 = 21 is x = -4.

We must separate the variable x on one side of the equation in order to determine the answer to the equation -6x - 3 = 21.

Here's how to accomplish that:

Step 1: Add 3 to both sides of the equation to start moving the constant term (in this example, -3), which is the first step:

-6x - 3 + 3 = 21 + 3

To put it simply, we have:

-6x = 24

Step 2: Subtract -6 from both sides of the equation to find the value of x:

(-6x) / -6 = 24 / -6

This can be written as x = -4.

Consequently, x = -4 is the answer.

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What is the slope of the line x = -2?

Answers

Answer:

Since x=−2 is a vertical line, there is no y-intercept and the slope is undefined.

Step-by-step explanation:

you are playing a card game. if you pull an ace you win $26, if you pull the king of hearts you win $204, if you pull a jack or queen you win $13, all other pulls you lose. what price should you be charged to make this a fair game?

A. $5
B. $7
C. $8
D. $6

Answers

How much money do you lose if you don’t get either of those options?
Specify?

Answer:

The answer is 8$- Took the test

Step-by-step explanation:

Iv'e been stuck on this question pls help

Answers

C. The corresponding sides of a triangle have the same slope

Solve for the value of y

Answers

8y-2 = 30 since that is a 90 degree and the above angle is 60 degrees. 90-60=30


8y=32
y=4
Given that the m < 60° and m < (8y — 2) add up to 90° because they are complementary angles:

We could simply establish the following formula to solve for y:

m < 60° + m < (8y — 2)° = 90°

60° + 8y — 2 = 90°

58° + 8y = 90°

Subtract 58° from both sides

58° — 58° + 8y = 90° — 58°

8y = 32°

Divide both sides by 8:

8y/8 = 32°/8

y = 4


Therefore, the value of y = 4°

Double check whether we derived with the correct answer:

m < 60° + m < (8y — 2)° = 90°

m < 60° + m < 8 (4)— 2° = 90°

m < 60° + m < 32 ° — 2° = 90°

m < 60° + m < 30° = 90°

m < 90° = 90° (True statement). Thus, we have the correct value for y.

Please mark my answers as the Brainliest if you find my explanations helpful :)

A team of explorers on an expedition was interrupted by bad weather on 20% of the days. If the weather was bad for 45 days, what was the total number of days the team was on its mission?

Answers

Answer:

a total of 9 days

Step-by-step explanation:

20% of 45 is 9

answer

=9days

step by step explanation

20% is always over 100,so you are to do 20 over a hundred of 45 days....since 45 can't divide 100 do 20

[tex] \times [/tex]

45 divide by one hundred and the final answer will be 9

Do you know what 0.009 x 75 is if you do can you help me

Answers

Answer:

.0675

Step-by-step explanation:

Cadence has cups of strawberries. She needs cup of strawberries to make a batch of tarts. How many batches can she make?

Answers

Answer:

How many cups does she have and how many does she need to make a batch? I do not think this questions is complete

Step-by-step explanation:

You and a friend are discussing how many sections you completed so far in algebra one you tell your friend I finish three times as many sections as you your friend replies you’ve only finished four more sections and I have how many sections have you and your friend completed

Answers

Answer:

4

Step-by-step explanation:

There are a total of 6 sections that have been completed by him and his friend.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,


Here,
Let the section be finished by one is y, and finished by his friend be x.

According to 1st condition,
y = 3x  - - - - - (1)
According to the second condition,
y = 4 + x
From equation 1
3x = 4 + x
2x = 4
x = 2

Now,
y = 3x
y = 3 * 2
y = 6

Thus, there are a total of 6 sections that have been completed by him and his friend.

Learn more about arithmetic here:

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An athlete drinks 448 ounces of water in 7 days. If the athlete drinks the same amount of water each day, how many ounces does the athlete drink in 1 day?

Answers

Answer:

64 ounces

Step-by-step explanation:

Divide the total number of ounces by the number of days.

448 / 7 = 64 ounces

64 ounces wrd2 !!!!!!!!!!!!

Write each power as repeated
multiplication. Calculate.
a) 25 c) 106 e) 1.22
b) 253 d) 34 f) 0.42

Answers

Answer:

a) 2⁵ = 2×2×2×2×2

b) 25³ = 25×25×25

c) 10⁶ = 10×10×10×10×10×10

d) 3⁴ = 3×3×3×3

e) 1.2² =1.2×1.2

f) 0.4²=0.4×0.4

Step-by-step explanation:

Which two numbers have a negative sum?

Answers

Answer:

C

Step-by-step explanation:

convert the fractions to decimals

are flies called flies because they fly- well if that's the case why aren't all other bugs that fly called fly's to that's not fair what if they want to be called by an amazing talent that they have to, smh- dragonfly's and flies get special treatment in the name game and it ait fair
( i was dared to post sum du.mb so yeah um )

Answers

Answer:

Fly is any of a large number of insects characterized by the use of only one pair of wings for flight and the reduction of the second pair of wings used for balance. The term fly is commonly used for almost any small flying insect

Step-by-step explanation

i just searched it up

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