help please! will give brainliest :)

Answer:

Step 1 is incorrect.

Answer:

The solution for x + y = 7 & 2x + 3y = 10 is at (11,-4)

Answer: (11,-4)

Hope this helps!

Answer:

2 and 1/12

Step-by-step explanation:

you need to take 2 1/2 and convert it to the common denominator of 6

so 1/2 * 3 = 3/6. and 2*6 = 12. add the 12 and 3 to get 15/6. which is equivalent to 2 1/2

so multiply 15/6 * 5/6 and get 75/36 to get or 2 and 3/36. reduce down to 2 and 1/12

Answer & Step-by-step explanation:

In order to simplify a square root, you need to find a number that multiplied times itself equals the number in the radical. Now 7×7 is 49. Also, -7×-7 is 49 as well. But there is no number times itself that makes -49. No number times itself makes a negative number.

(You will, in time learn imaginary numbers in order to simplify this, but that can be for another day!)

Answer:

1)   [tex]x=\dfrac12[/tex]

2)   [tex]n = -3 \ \ \textsf{and} \ \ m = -4[/tex]

3)  see below

4)  A:  0 = 1

Step-by-step explanation:

Question 1

[tex]15-0.5(4x-2)+4x=17[/tex]

[tex]\implies 15-2x+1+4x=17[/tex]

[tex]\implies 2x+16=17[/tex]

[tex]\implies 2x=1[/tex]

[tex]\implies x=\dfrac12[/tex]

Question 2

[tex]\textsf{rearrange} \ n=m+1 :[/tex]

[tex]\implies -m=-n+1[/tex]

[tex]\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\[/tex]

[tex]\implies0=n+3[/tex]

[tex]\implies n=-3[/tex]

[tex]\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:[/tex]

[tex]\implies m=-3-1[/tex]

[tex]\implies m=-4[/tex]

Question 3

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

solve for x

Question 4

[tex]3j=k[/tex]

[tex]k=3j+1[/tex]

[tex]\textsf{rearrange} \ 3j=k :[/tex]

[tex]\implies -k=-3j[/tex]

[tex]\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:[/tex]

[tex]\implies 0=1[/tex]

Solution = A

Answer:

i do not now the answer for 1 question but the answer for 2 question is

1.24/3 =.41      and       13.75/15=.91    interest the first month.

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex](a^{m})^{n}=a^{m*n}\\\\\dfrac{a^{m}}{a^{n}}=a^{m-n}\\\\\\a^{m}*a^{n}=a^{m+n}\\\\\\[/tex]

[tex]\dfrac{(2^{3})^{3}}{2^{4}*2^{3}}=\dfrac{2^{3*3}}{2^{4+3}}\\\\\\=\dfrac{2^{9}}{2^{7}}\\\\\\=2^{9-7}\\\\=2^{2}\\\\=4[/tex]

Answer: 4

Step-by-step explanation:

[tex]\frac{2^{9} }{2^{7} } = 2^{2} = 4[/tex]

Answer:

your answer is d i do beleive i hope i helped:) and also please mark me brainlest

Step-by-step explanation:

Answer:

D is wrong And so is A i just did the test

Step-by-step explanation:

I'm sure its either B or C

Answer:

7:2

350:100

[tex] \frac{7}{9} \times 450kg = 350kg[/tex]

[tex] \frac{2}{9} \times 450g = 100kg[/tex]

Answer:

24 hours

Step-by-step explanation:

Answer:

4 hours sound good

Answer:

Second Line

Step-by-step explanation:

x/-1 > -6

x < 6

Answer:

[tex]area = length \times width \\ length = \frac{area}{width } \\ length = \frac{(56 {x}^{2} + 108x + 36) {m}^{2} }{(14x + 6)m} \\ length = (4x + 6)m[/tex]

Answer:

a. 9 b. 18

Step-by-step explanation:

Answer:

A: 6/8 B: 1 2/8

Step-by-step explanation:

1) Count the number on spaces between the lines and then you get your denominator (bottom number of a fraction or in all)

2) Count to the line the letter is on and that will get your numerator (top number of a fraction or part of the denominator)

Note: I didn't know how to explain the numerator so...

Answer:

d=10

Step-by-step explanation:

first you divide 5d by 5 to cancel it self out and make it only d.

Then divide 10 by 5.

you should then get 2

Answer:

n = 3

XY = 39 ft

XZ = 39 ft

Step-by-step explanation:

     If we rotate the triangle 90° to the right we can see that the congruent angles are now on the bottom, making it the "more commonly seen isosceles triangle" we know.

     This means that the two legs will be congruent to each other, so we can set them equal and solve for n:

(9n + 12) = (15n - 6)

9n + 12 = 15n - 6

9n + 18 = 15n

18 = 6n

6n = 18

n = 3

     Now we can plug this value of n (3) into one of the expressions to solve for the legs. Since they will be the same length we only need to do one, but I will do both to make sure my work is as correct as possible:

XY

9n + 12

9(3) + 12

27 + 12 = 39

XZ

15n - 6

15(3) - 6

45 - 6 = 39

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

1)

2)

3)

4)

5)

6)

7)

8)

Answer:

24t = 432

Step-by-step explanation:

I solved this by dividing 432 by 24, which would give you t.

That however is not an option so i just switched it around :)

Answer:

x = -5

x = 5

x = -3, 3 is the incorrect answer

Hey there!

ASSUMING!

-3/7m = 12

IF SO!

DIVIDE -7/3 to BOTH SIDES

-7/3 * -3/7m = 12 * 7/3

CANCEL out: -7/3 * (-3/7) because it give you 1

KEEP: 12 * (-7/3) because it give you the m-value

NEW EQUATION: m = 12 * (-7/3)

SIMPLIFY IT!

m = -28

Therefore, your answer is: m = -28

(Option A)

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

1. F:$33.60

2. E:$96

3. H:$2400

4. C98.40

Step-by-step explanation:

when a variable depends on the product or quotient of two or more variables, it is a joint variation like in our case here.

F (e.g. gravity) varies directly with the masses of 2 objects (like 2 planets) and varies inversely with the distance to or between these objects.

so, the gravity between 2 planets gets stronger the more mass the planets have, but gets weaker the more distance there is between them.

there is only one constant considered in a joint variation statement. in our case : k

Answer:

25

Explanation:

By Using Pythagoras Theorem,

h^2=p^2+b^2

or, x^2=(24)^2+7^2

or, x^2=576+49

or, x^2=625

or, x=√625

•°• x=25

Hey there!

2n + 5 = 9

SUBTRACT 5 to BOTH SIDES

2n + 5 - 5 = 9 - 5

CANCEL out: 5 - 5 because it gives you 0

KEEP: 9 - 5 because it help solve for the n-value

NEW EQUATION: 2n = 9 - 5

SIMPLIFY IT!

2n = 4

DIVIDE 2 to BOTH SIDES

2n/2 = 4/2

CANCEL out: 2/2 because it give you 1

KEEP: 4/2 because it give you the n-value

NEW EQUATION: n = 4/2

SIMPLIFY IT!

n = 2

Therefore, your answer is: n = 2

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

y = tan(pi x) Write the composite function in the form f(g(x)). Identify the inner function u = g(x) and the outer function y =f(u). Then find the derivative dy/

Step-by-step explanation:

Hopes this helps : )