solve this maths problem​

Answer:

3.

Step-by-step explanation:

1/x = (x+3)/(2x^2), where x ≠ 0.

Cross-multiply to give 2x^2 = x(x+3).

2x^2 - x^2 - 3x = 0

x^2 - 3x = 0

x(x - 3) = 0

x = 3 or x = 0 (rejected because equation will be undefined)

Answer:

d

Step-by-step explanation:

Answer:

w < 22

Step-by-step explanation:

w - 5 < 17

Add 5 to both sides:

w - 5 + 5 < 17 + 5

w < 22

Answer:

Mia's test score is 44 if she got 3 questions wrong.

Mia's test score is (50-2x) if she got x questions wrong.

Step-by-step explanation:

It is given that, Mia is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 2 points.

If she got 3 questions wrong, then

Deducted marks [tex]=2\times 3=6[/tex]

Marks obtained by Mia = Total marks - Deducted marks

                                      [tex]=50-6[/tex]

                                     [tex]=44[/tex]

So, Mia's test score is 44 if she got 3 questions wrong.

If she got x questions wrong, then

Deducted marks [tex]=2\times x=2x[/tex]

Marks obtained by Mia = Total marks - Deducted marks

                                      [tex]=50-2x[/tex]

So, Mia's test score is (50-2x) if she got x questions wrong.

Answer:

y(t) = 494 (1.03)^t

y(10) = 663,89

Step-by-step explanation:

An increase in population by 3% each year means that at the end of each year, the population is 1.03 times what it was at the start of the year

This increase in population continues for t years

Exponential growth model that represents the population y (in thousands) t years after the beginning of the decade is

y(t) = 494 (1.03)^t

Where,

y = population

t = number of years

Find y when t = 10

y(t) = 494 (1.03)^t

y(10) = 494 (1.03)^10

= 494 ( 1.3439)

= 663.8866

Approximately y(10) = 663.89

This means that after 10 years from when the population was 494,000, it increased to 663,89.

Answer:

[tex] \boxed{ \bold{ { \boxed{ \sf{2 {c}^{4} + 3 {c}^{3} - {13c}^{2} - 18c + 6}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{( {c}^{2} - 6)(2 {c}^{2} + 3c - 1)}[/tex]

Use distributive property

[tex]{ \sf{ {c}^{2} (2 {c}^{2} + 3c - 1) - 6(2 {c}^{2} + 3c - 1)}}[/tex]

[tex] \sf{2 {c}^{4} + 3 {c}^{3} - {c}^{2} - 12 {c}^{2} - 18c + 6}[/tex]

Collect like terms

[tex] \sf{2 {c}^{4} + 3 {c}^{3} - 13 {c}^{2} - 18c + 6} [/tex]

Hope I helped!

Best regards! :D

Step-by-step explanation:

f(x) = x - 2

f(-1) = -1 -2

= -3

Answer:

x=3

Step-by-step explanation:

2/3x -4 = -2

2/3x = 2

(3/2)*(2/3x) = (2*3/2)

x=3

Answer:

x=3 I hate asking for things but may  i have brainliest I need to rank up

Step-by-step explanation:

Step 1: Add 4 to both sides.

2/3x−4+4=−2+4

2/3x=2

Step 2: Multiply both sides by 3/2.

(3/2)*(2/3x)=(3/2)*(2)

then you get x=3

Answer:

Step-by-step explanation:

9x - 6y = 42

5x + 6y = 42

14x = 84

x = 6

30 + 6y = 42

6y = 12

y = 2

(6, 2)

Answer:

  $800

Step-by-step explanation:

We are told that ...

  0.90 × (weekly income) = $720

Dividing by 0.90 gives ...

  (weekly income) = $720/0.9 = $800

Sally's weekly income is $800.

Answer:

5.3× 10⁴= ?

Step-by-step explanation:

10⁴ can also be written as 10×10×10×10= 10000

so, 5.3 × 10000= 53000

Scientific notations are the way through which a very small or a very large number can be written in shorthand. The value of 5.3×10⁴ in standard form is equal to 53,000.

Scientific notations is the way through which a very small or a very large number can be written in shorthand.  In scientific notations when a number between 1 and 10s is multiplied by a power of 10.

For example, 6,500,000,000,000 can be written as 6.5e+12.

Given the numerical value 5.3×10⁴ which is needed to be written in the standard form, therefore, we can write,

5.3 × 10⁴

= 5.3 × 10,000

= 53,000

Hence, the value of 5.3×10⁴ in standard form is equal to 53,000.

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Answer:

Circle

Step-by-step explanation:

just took test and got it correct

Circle is the set of all points in a plane is equidistant at a given distance from a point.

A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “center”.

Since, we know that

A two dimensional figure in which the set of all the points in a plane is equidistant from a given is called circle.

Therefore, option B is correct.

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Answer:

18

Step-by-step explanation:

12(3/2)=36/2=18

Answer:

Step-by-step explanation:

[tex]12\left(\frac{3}{2}\right)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=12\times \frac{3}{2}\\\\\mathrm{Multiply\:fractions}:\quad \:a\times\frac{b}{c}=\frac{a\:\times\:b}{c}\\=\frac{3\times\:12}{2}\\\\\mathrm{Multiply\:the\:numbers:}\:3\times\:12=36\\=\frac{36}{2}\\\\\mathrm{Divide\:the\:numbers:}\:\frac{36}{2}=18[/tex]

Answer:

[tex]\mathtt{\Delta K.E = 10500 \ J}[/tex]

Step-by-step explanation:

Given that:

the expression for the change in kinetic energy = [tex]\dfrac{1}{2} \times 350 \times ( 122 -62)[/tex]

Recall that

Kinetic energy K.E = [tex]\dfrac{1}{2}mv^2[/tex]

where,

m = mass of the horse

v = velocity of the horse

The change in kinetic energy between  two instant times can be expressed by the relation

[tex]\Delta K.E = K.E_2 - K.E_1[/tex]

[tex]\Delta K.E =\dfrac{1}{2}mv^2_2- \dfrac{1}{2}mv^2_1[/tex]

[tex]\Delta K.E =\dfrac{1}{2}m(v^2_2-v^2_1)[/tex]

where;

m = 350

[tex]v_2[/tex] = 122

[tex]v_1[/tex]= 62

[tex]\Delta K.E =\dfrac{1}{2} \times 350 \times (122-62)[/tex]

[tex]\Delta K.E =\dfrac{1}{2} \times 350 \times (60)[/tex]

[tex]\Delta K.E = 350 \times 30[/tex]

[tex]\mathtt{\Delta K.E = 10500 \ J}[/tex]

Answer:

D.

Step-by-step explanation:

√49 = 7 by definition of square root.

7 is an integer, and all integers are real numbers.

7 is also rational as all integers are rational.

√49 is not an irrational number.

if youre soliving to get x

      2

-4x         - 7x

-16x-7=-23

Answer:

[See Below]

Step-by-step explanation:

✦ First simplify parts of the equation to make it easier:

  ✧ 2⁵ = 32

  ✧ 3² = 9

✦ Rewrite and solve parenthesis:

  ✧ (32 ÷ 9)⁴ = 3.55555556⁴

✦ Now solve the exponent:

  ✧ 3.55555556⁴ = 159.819541

✦ Simplify your answer:

  ✧ 159.82 (I rounded to the nearest hundredths)

~Hope this helps Mate. If you need anything feel free to message me.

Answer:

D

Step-by-step explanation:

Step-by-step explanation:

D

p(x)=o

p(x+2-2)=o

p(x)=o

Answer:

B = 90

Step-by-step explanation:

cause math lol.

Answer:

2 3/4 gallons in each container

Step-by-step explanation:

Gallons of water = 11

Containers = 4

Larry pours 11 gallons of water equally into 4 containers

Gallons of water in each container = Total gallons of water / number of containers

= 11 / 4

= 2 3/4

There are 2 3/4 gallons of water in each containers

The equation is

Gallons of water in each container = Total gallons of water / number of containers

Answer:

This is the expression: c +( 0.11*c)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

To answer a multiple choice question process of elimination can be very helpful

A isnt correct because CED is 90 degrees

B isnt correct since the line equals 180 degrees

C is correct because CED and AEC are a linear pair that add up to 180 degrees so if CED is 90 then so is AEC

Answer:

i did not understand it either

Step-by-step explanation:

but it means so like you would see what statement is ture so like say ced measured right then you would say it is right, you want to see what angel is right with this question your answer is the third answer

hope this help

Answer:

4t-5

Step-by-step explanation:

Answer:

4t-5

Step-by-step explanation:

8t+1+(-4t)+(-6)

= 8t+(-4t)+1+(-6)

=(8t-4t)+(1-6)

=(8-4)t+(-5)

=(4)t+(-5)

=4t-5

Answer:

x = 7.5

Step-by-step explanation:

Step 1: Subtract x from both sides.

1.5x−0.5−x=x+3.25−x

0.5x−0.5=3.25

Step 2: Add 0.5 to both sides.

0.5x−0.5+0.5=3.25+0.5

0.5x=3.75

Step 3: Divide both sides by 0.5

0.5x ÷ 0.5 = 3.75 ÷ 0.5

Hoped this helped!

☆*: .｡. o(≧▽≦)o .｡.:*☆

Answer:

C

Step-by-step explanation:

you can add that they meet at a 90° angle

Answer:

Nick get = $10

Pam get = $28.25

Step-by-step explanation:

Given:

Total amount paid = $38.25

Nick work = 1 hour 5 minutes = 1.0833 hr

Pam work = 3 hour

Find:

Amount they get

Computation:

Assume each get x in 1 hour

So,

3x + 1.0833x = 38.25

4.0833x = 38.25

x = 9.3674

Nick get = 1.0833(9.3674) = 10.14 = $10

Pam get = $38.25 - $10 = $28.25

Answer:

Step-by-step explanation:

(-2+3)/2 = 1/2

(5 - 17)/2 =  -12/6= -2

(1/2, -2)

Answer:

Find the coordinates of the midpoint of a segment with the given endpoints. (-3,5) (7,-1)

Step-by-step explanation:

The equation for break even is 8P = 48

An equation is an expression that states the equality of two things expressed in different form.

In the given question

Conard spent $48 for art supplies

Canvas costs $2

He plans to sell his painting for $10

∴ Without the canvas his paintings costs $(10 - 2)

= $8

So, no. of paintings (P) to break even he needs to sell

8P = 48

P = 6

∴ Conard needs to sell 6 paintings to break even.

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