1. The sum of two numbers is 81. The difference
is 13. Find the two numbers.

Answer:

Mika

Step-by-step explanation:

Jack's water is 1/3 salty water while Mika's water is 4/9 salty water and 1/3 = 3/9. 4/9 is greater than 3/9 so mika's is saltier.

Answer:

i think 2.7

Step-by-step explanation:

if not have a great life

Answer:

$49.5

Step-by-step explanation:

Divide 45 by 10 = 4.5

Add 0.45 to 45 =49.5

Answer:

5

Step-by-step explanation:

4/x=80/100 cross multiply (4 and 100, 80 and x)

80x/80=400/80

=5

Step-by-step explanation:

[tex] \tt{(6 {x}^{3} + 3 {x}^{2} + 3) + (2 {x}^{3} - 5x + 1) }[/tex]

Remove the unnecessary parentheses

⟶ [tex] \tt{6 {x}^{3} + 3 {x}^{2} + 3 + 2 {x}^{3} - 5x + 1 }[/tex]

Combine like terms. Like terms are those which have the same base. Remember that only coefficients of like terms can be added or subtracted and their bases remains the same.

⟶ [tex] \tt{6 {x}^{3} + 2 {x}^{3} +3 {x}^{2} + 3 + 1 - 5x}[/tex]

⟶ [tex] \tt{8 {x}^{3} + 3 {x}^{2} + 4 - 5x}[/tex]

In standard form , the expression should be written in a way that power of variables goes from highest to lowest.

[tex] \red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed {\underline{ \tt{8 {x}^{3} + 3 {x}^{2} - 5x + 4}}}}}}}[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Answer:

The scale is of 1:6336000

Step-by-step explanation:

The scale is given dividing the distance on the map by the real distance, in the same unit.

Each mile has 63360 inches.

We have that:

Distance on the map: 1.8 in

Real distance: 180 miles = 180*63360 = 11404800 in

Scale:

We have that 11404800/1.8 = 6,336,000, so the scale is of

1.8:11404800 = 1:6336000

Answer:

B.

Step-by-step explanation:

Both sides of equation are the same, making the amount of solutions infinite.

Answer:

5301

Step-by-step explanation:

There are 9 companies that needed to print 589 coupons each. Multiply the two numbers:

9 * 589 = 5301

Answer:

1232

Step-by-step explanation:

1232 6th grades went on the trip because 160p multiplied by .77, the amount of chaired covered by 6th graders, is equal to 1232.

Answer:

c

Step-by-step explanation:

Matrix B is [tex]\left[\begin{array}{ccc}12&1\\13&5&\\\end{array}\right][/tex].

Here, given condition is,

[tex]A = \left[\begin{array}{ccc}-2&5\\7&6&\\\end{array}\right][/tex]

And, l B l = - l A l

What is Matrix?

Matrix is an ordered rectangular arrangement of numbers.

Now,

[tex]A = \left[\begin{array}{ccc}-2&5\\7&6&\\\end{array}\right][/tex]

⇒ l A l = 6 x -2 - 5 x 7 = -12 - 35 = -47

Clearly, by option B;

[tex]B = \left[\begin{array}{ccc}12&1\\13&5&\\\end{array}\right][/tex]

⇒ l B l = 12 x 5 - 1 x 13

          = 60 - 13 = 47

Hence,  l B l = - l A l

So, Matrix B is [tex]\left[\begin{array}{ccc}12&1\\13&5&\\\end{array}\right][/tex].

Learn more about the matrix visit:

https://brainly.in/question/23669553

#SPJ2

Answer:

x=1/2, y=4

Step-by-step explanation:

Double both sides of the top equation:

4x+6y=26

Now subtract boths sides of the second one from the first one:

(4x+6y) - (4x-y) = 26 - (-2)

7y = 28

so y = 4

4x-y=-2 so 4x-4=-2

4x=2

x=1/2

Answer:

[tex]5.971\ cm[/tex]

Step-by-step explanation:

The computation of x is given below:

As we know that

[tex]Area = \pi r^2\\\\56 = \pi r^2\\\\r^2 = \frac{56}{\pi} \\\\r = \sqrt{\frac{56}{\pi} }[/tex]

= 4.22

Now the diameter of the square would be similar to the diameter of the circle

So,

[tex]x\sqrt{2} = 2\times r \\\\x = \frac{2\times r}{\sqrt{2} } \\\\= \frac{2\times 4.22}{\sqrt{2} } \\\\= 5.971\ cm[/tex]

Answer:

Step-by-step explanation:

3x - 42 = 2x + 9

x - 42 = 9

x = 51

Answer:

Geometric sequence

Step-by-step explanation:

A geometric sequence is when you multiply or divide with a constant number. So in 1, 5, 25, 125, and 625, we're multiplying by 5 every time. I hope this helped :)

C.) Segment YZ

Step-by-step explanation:

If you map Trapezoid WXYZ into Trapezoid MNOP, Segment OP would correspond with Segment YZ.

Answer:

B, bc I'm a b

════════ ∘◦❁◦∘ ════════

• Line A = 4

• Line B = (-2)

═══════════════════════

[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]

══════════════════════════

•Line A

x1 = 0

y1 = -6

x2 =5

y2 = 14

• Line B

x1 = 7

y1 = -6

x2 = -3

y2 = 14

══════════════════════════

•Line A

[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{14 - ( - 6)}{5 - 0} = \frac{20}{5} = 4[/tex]

•Line B

[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{14 - ( - 6)}{( - 3) - 7} = \frac{20}{ - 10} = ( - 2)[/tex]

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#Moderators please don't be mean, dont delete my answers just for approval from your senior or just to get the biggest moderation daily rank. This answer is long and take a lot of my time, how can you just instanly delete this? :(

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Answer:

her mistake was at 12-6+4

instead of adding 4 to negative six she subtracted it really should by 10-2 ad her answer should be 8

Step-by-step explanation:

Answer:

B (4,2)

Step-by-step explanation:

This coordinate pair would make the relation not a function because there would be two X values that are the same.

Answer:

B

Step-by-step explanation:

Answer:

z= 160

Explanation

Answer:

z=160

Step-by-step explanation:

you simply just have to do this

72×100÷45

Answer:

your añswer is c) I hope it helps!

Answer:

C

Step-by-step explanation:

Answer:

[tex] \frac{dy}{dx} = \frac{ - x + 2}{y - 6} [/tex]

answer

Answer:

the second, fourth and fifth

Answer:

[tex]y = \frac{3}{4} x + 10[/tex]

Step-by-step explanation:

no idea how to explain it but just trust. if you test it and say:

[tex]y = \frac{3}{4}*4 + 10[/tex]

then y would equal 13.

x is 4 on the table and y is 13 below it, so my answer, therefore, is correct.

Answer: Rs. 25,300

Step-by-step explanation:

First find the original price of the plot:

Assume this price is x:

x * ( 1 - 15%) = 18,700

0.85x = 18,700

x = 18,700/0.85

x = Rs. 22,000

To make a gain of 15%, sell at:

= 22,000 * (1 + 15%)

= 22,000 * 1.15

= Rs. 25,300

Answer: LN 40

Step-by-step explanation: Because thin of the answers and how to do it

Answer: LN 40

Step-by-step explanation:

Answer:

The answer is C y=5000(0.8)

Step-by-step explanation:

MARK BRAINLIEST PLEASE

5000x0.8=4000

4000x0.8=3200

3200x0.8=2560

So on and so forth