I need help
Help please
22 points

Answer:

1.51

Step-by-step explanation:

4.26-2.75=1.51

Answer:

1.5

Step-by-step explanation:

All you have to do is subtract 4.26 from 2.75.

Answer:

this is to hard and I like math

Answer:

C

Step-by-step explanation:

Answer:

x > 65/3

Step-by-step explanation:

Answer:

(x+2)(2x-1)

Step-by-step explanation:

I used a little guess and check for this so bear with me :P

The final answer would always have to be two brackets with x and the relevant variables.

2x²: You know the possible factors that can be multiplied together would be 2x and x. Each factor would have to be in different brackets, so we get (x + smth else)(2x +smth else)

When factorising quadratic expressions, you need to find the correct pair of factors, that when multiplied together, becomes (-2). They also need to become 3x when they are multiplied with the term in the bracket (either x or 2x) and then added together.

Possible factors:

1. 1 × (-2) = (-2)

2. -1 × 2 = (-2)

Assume (x+1)(2x-2) = 2x² -2x +2x -2

                               = 2x² +0 - 2 (Wrong)

Assume (x-2)(2x+1) = 2x² +x -4x -2

                               = 2x² -3x -2 (Wrong)

Assume (x-1)(2x+2) = 2x² +2x -2x -2

                               = 2x² +0 - 2 (Wrong)

Assume (x+2)(2x-1) = 2x² -x +4x -2

                               = 2x² +3x -2 (Correct!)

Thus, (x+2)(2x-1) is the answer.

QUESTION:

Factorise 2x^2+3x-2

ANSWER:

[tex]\green{{(x + 2) × (2x - 1)}}[/tex]

STEP-BY-STEP EXPLANATION:

Write [tex]{3x}[/tex] as a diffrence

2x² + [tex]\red{{3x}}[/tex] - 2

2x² + [tex]\red{{4x - x}}[/tex] - 2

Factor out [tex]{2x}[/tex] from the expression

[tex]\red{{2x² + 4x}}[/tex] - x - 2

[tex]\red{{2x×(x + 2)}}[/tex] - x - 2

Factor out the negative sign from the expression

2x² + 4x - [tex]\red{{x - 2}}[/tex]

2x × (x + 2) - [tex]\red{{(x + 4)}}[/tex]

Factor out [tex]{x + 2}[/tex] from the expression

[tex]\red{{2x× (x + 2) - (x + 2}}[/tex]

[tex]\green{\boxed{(x + 2) × (2x - 1)}}[/tex]

hope it's helps

===============================================

Work Shown:

x = smaller integer

x+1 = larger integer

x and x+1 are consecutive integers since the larger follows right after the smaller

5*(smaller) - 3*(larger) = 51

5*(x) - 3*(x+1) = 51

5x - 3x - 3 = 51

2x - 3 = 51

2x = 51+3

2x = 54

x = 54/2

x = 27

x+1 = 27+1 = 28

The two consecutive integers are 27 and 28.

Let us consider two integers to be x and x+1:

x = smaller integer

x+1 = larger integer

Given: x and x+1 are consecutive integers.

[tex]5*(smaller) - 3*(larger) = 51\\\\5*(x) - 3*(x+1) = 51\\\\5x - 3x - 3 = 51\\\\2x - 3 = 51\\\\2x = 51+3\\\\2x = 54\\\\x = 54/2\\\\x = 27[/tex]

The value of x i.e. smaller integer comes out to be 27

Thus, x+1 = 27+1 = 28

Therefore, the two consecutive integers are 27 and 28.

Learn more:

brainly.com/question/17695139

Question Completion:

Evaluate the two investments, assuming shares of ABC were sold at $10.00 each, while those of DEF were sold at $15 each.  Which investments yielded the higher return?

Answer:

Tim Jones

Investment in DEF yielded the higher return of $1,225 (net proceeds) than ABC's return of $1,000.

Step-by-step explanation:

a) Data and Calculations:

Investments in ABC and DEF:

                                          ABC           DEF

Investment (shares)          100           100

Unit price of shares         $5.25        $6.00

Total investments            $525        $600

Selling price per share    $10           $15

Sales proceeds              $1,000     $1,500

Investment commission   ($0)        ($275)

Net proceeds from sale $1,000     $1,225

b)  The above calculations show clearly that the investment in DEF with a load of $275 yielded the higher returns than investment in ABC with no load.  This result suggests that the investment load may not be the only factor for rejecting an investment, but its net proceeds.

Answer:

What is the question that you need help with?

Answer:

Sum. If the problem asks to add the two fractions, the result is:

[tex]\frac{29}{24}[/tex]

Step-by-step explanation:

If you mean to simply state whether this is a sum or a difference, it's a sum.

This is because of the + sign present between the two fractions which indicates it's an addition.

If it was a - it would indicate it was a subtraction problem (or difference)

In order to solve this, we will have to get a common denominator on both fractions. In this case, to do this, we can multiply each denominator to the other fraction, such that:

[tex]3(\frac{7}{8}) + 8(\frac{1}{3})\\\\\frac{21}{24} + \frac{8}{24}\\\\\frac{21 + 8}{24}\\\\\frac{29}{24}\\[/tex]

This can't be simplified further,  but can be represented in decimal form as 1.20833.

Good luck!

Answer:

Step-by-step explanation:

we can have infinite similar triangles with different side lengths but if the  base length is same then two triangles on the opposite side of base.

On one side of base  only one triangle can be formed.

Step-by-step explanation:

Discriminant = 16k² - 4(2)(-5k)

Since 16k² + 40k < 0, 2k² + 5k < 0, k(2k + 5) < 0.

Therefore -5/2 < k < 0.

9514 1404 393

Answer:

Step-by-step explanation:

If the original price is x, taking 20% off gives a discounted price (d) of ...

 d = x - 20% · x = x(1 -20%) = 0.80x . . . . discounted price

__

Then for an original price of $18, the discounted price is ...

  0.80×$18 = $14.40 . . . discounted price

Answer:

1

Step-by-step explanation:

The greatest common factor is 1

all even numbers are composite except for 2

A composite number has factors in addition to one and itself. The numbers 0 and 1 are neither prime nor composite. All even numbers are divisible by two and so all even numbers greater than two are composite numbers. ... Therefore all numbers that end with five and are greater than five are composite numbers.

Answer:

B. c // d

Step-by-step explanation:

When ∠1 = ∠3, it means that they are corresponding angles and for that to be true, there must be a pair of parallel lines and one line to cut across both of the lines. Thus, we can conclude that c and d are the parallel lines and a is the line that cut across both of them, creating the corresponding angles.

Answer:

[tex]f^{-1}=\frac{x-4}{3}[/tex]

Step-by-step explanation:

[tex]f(x)=3x+4[/tex]

Change f(x) to y

[tex]y=3x+4[/tex]

Switch the x and y

[tex]x=3y+4[/tex]

Solve for y

[tex]x-4=3y\\\frac{x-4}{3} =y[/tex]

Hope this helped!

(Please mark Brainliest)

Answer:

Shannon has to make 41 trips to cycle a total of 50 kilometers.

Step-by-step explanation:

Given that

Shannon has cycled 9 kilometers this year

Let x be the number of trips that Shannon will make during the year

As she cycles 1km per trip, the total distance in trips will be: 1x

She has to cycle 50 kilometers in a year so the equation for this problem is:

[tex]9+x = 50[/tex]

Solving this equation will give us the number of trips she has to make

[tex]9+x = 50\\x = 50-9\\x = 41[/tex]

Hence,

Shannon has to make 41 trips to cycle a total of 50 kilometers.

Answer:

14°

Step-by-step explanation:

Angle DCE is congruent to Angle GDF

To find the measure of Angle CDF, you need to find the measure of Angle DCE first.

360° = 76° + 90° + Angle DCE + 90°

360° = 256° + Angle DCE

Angle DCE = 104°

Then you subtract 90° from 104° (Angle DCE) to get the measure of Angle CDF

104° - 90° = 14°

Angle CDF = 14°

Answer:

C. 26 degrees

Step-by-step explanation:

Just did the review on Edg (2021)!!

Answer:

$39.96

Step-by-step explanation:

4 x 9.99 = 39.96

Answer:

13.32

Step-by-step explanation:

3 apples cost $9.99, so 1 apple is 9.99 divided by 3 so:

9.99/3 = 3.33

1 apple is $3.33, so to find 4 apples just multiply 3.33 with 4:

$3.33 · 4 = $13.32

Complete question :

The annual rainfall in a certain region is approximately normally distributed with mean 41.4 inches and standard deviation 5.7 inches. Round answers to the nearest tenth of a percent. a) What percentage of years will have an annual rainfall of less than 43 inches? b) What percentage of years will have an annual rainfall of more than 39 inches? c) What percentage of years will have an annual rainfall of between 38 inches and 42 inches?

Answer:

0.61053

0.66314

0.26647

Step-by-step explanation:

Given that :

Mean (m) = 41.4 inches

Standard deviation (s) = 5.7 inches

a) What percentage of years will have an annual rainfall of less than 43 inches?

P(x < 43)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (43 - 41.4) / 5.7 = 0.2807017

p(Z < 0.2807) = 0.61053 ( Z probability calculator)

b) What percentage of years will have an annual rainfall of more than 39 inches? c)

P(x > 39)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (39 - 41.4) / 5.7 = −0.421052

p(Z > −0.421052) = 0.66314 ( Z probability calculator)

What percentage of years will have an annual rainfall of between 38 inches and 42 inches?

P(x < 38)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (38 - 41.4) / 5.7 = −0.596491

p(Z < −0.596491) = 0.27545 ( Z probability calculator)

P(x < 42)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (42 - 41.4) / 5.7 = 0.1052631

p(Z < 0.1052631) = 0.54192 ( Z probability calculator)

0.54192 - 0.27545 = 0.26647

Answer:

the equation y=mx+b

The y intercept is the point on a line that passes through the y line.

To solve the y intercept, solve y=mx+b.

m being slope

y being a y point

x being a x point

and b being y intercept.

Step-by-step explanation:

Answer:

E

X + 11 i think that is the answer of this question

Answer:

The only value in the interval (-2, 5) which satisfies the inequality is:

Step-by-step explanation:

Given the inequality

The integer values lie in the interval (-2, 5) = -1, 0, 1, 2, 3, 4

Let us substitute all the integer values lie in the interval

substitute x = -1

-4x – 1 > 1

-4(-1) - 1 > 1

4 - 1 > 1

3 > 1

TRUE

substitute x = 0

-4x – 1 > 1

-4(0) - 1 > 1

0 - 1 > 1

-1 > 1

FALSE

substitute x = 1

-4x – 1 > 1

-4(1) - 1 > 1

-4 - 1 > 1

-5 > 1

FALSE

substitute x = 2

-4x – 1 > 1

-4(2) - 1 > 1

-8 - 1 > 1

-7 > 1

FALSE

substitute x = 3

-4x – 1 > 1

-4(3) - 1 > 1

-12 - 1 > 1

-13 > 1

FALSE

substitute x = 4

-4x – 1 > 1

-4(4) - 1 > 1

-16 - 1 > 1

-17 > 1

FALSE

Therefore, the only value in the interval (-2, 5) which satisfies the inequality is:

Answer:

The slopes are perpendicular.

Step-by-step explanation:

First we are going to find the slope-inercept form from the equation, -5x + 10y = 5.

Solve for y.

-5x + 10y = 5

+5x. =+5x

10y = 5x + 5

[tex] \frac{10y}{10} = \frac{5x + 5}{10} \\ y = \frac{1}{2}x + \frac{1}{2} [/tex]

So we now have

[tex]y = \frac{1}{2}x + \frac{1}{2} \\ and \\ y = - 2x + 4 [/tex]

Looking at the equation above, the slopes are perpendicular.

Answer:

-24/140

Step-by-step explanation:

((-2)×(-4)×(-2))/(4×7×5)

-24/140

Answer:

125

Step-by-step explanation:

If map uses a scale of 1 inch equals 25 miles, then miles represented for 5 inches on the map would be,  125 miles,  So option (D) is correct.

To measure and compare various things we use one term which is known as unit. When all of the measuring units are the same, comparison is simple. Depending on their intended usage, different units can be categorized.

e.g.  For length measurement we use units like:- meter, centimeter, inch, miles.

Given that,

A  map uses a scale of 1 inch equals 25 miles,

So for 5 inches, 25 will be added 5 times

And we get 125,

Hence,  The scale value is 125 miles.

To know more about Units check:

https://brainly.com/question/30168372

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Answer:

The solutions are -2 and 3

Step-by-step explanation:

You can find the solutions to a quadratic by looking at where the line/arch intersects the x-axis. In this case, the quadratic intersected it at -2,0 and 3,0.

Answer:

Step-by-step explanation:it cant be A or B because its not negative so it has to be C or D and its not D because its not in the 3s its in the ones still it did not evean have a 3.

so the best answer i whould have to say C

plz give brainlynis

Answer:

This is the correction of the other person who answered the answer is D

Step-by-step explanation: