Please help me with this math

Answer:

la app es la mejor gracias

Step-by-step explanation:

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Step-by-step explanation:

Given-

5.1 km/hr

Relation bween mph and km :-

[tex]1 \: mph = 1.609 \: km[/tex]

So,

[tex] \frac{5.1 \: km}{1 \: h} \times \frac{1 \: km}{1.609} = 3.17 \: mph[/tex]

Therefore, the answer is 3.17 mph.

Answer:

y = - 3x - 1

Step-by-step explanation:

Slope = 3/-1 = -3 (rise/run)

y-intercept= -1

y = -3x - 1

Answer:

{5 + [-5(2 - 4) : 2]}.4 = 40/ 1  = 40

Step-by-step explanation:

Subtract: 2 - 4 = -2

Multiple: -5 * the result of step No. 1 = -5 * (-2) = 10

Divide: the result of step No. 2 : 2 = 10 : 2 = 5

Add: 5 + the result of step No. 3 = 5 + 5 = 10

Multiple: the result of step No. 4 * 4 = 10 * 4 = 40

i hope this helps :)

Answer:

100

Step-by-step explanation:

Answer:

9.45 (Jill)

Step-by-step explanation:

2.7 x 3.5 = 9.45

Lisa put the decimal in the wrong spot.

Answer:

-3/y+3 +1/-2y

x-2>3

9(-10-10y)

9514 1404 393

Answer:

  (x, y, z) = (-9, -1, 8)

Step-by-step explanation:

My calculator tells me the reduced row-echelon form of ...

  [tex]\left[\begin{array}{ccc|c}-3&-2&-3&5\\1&2&-1&-19\\-2&1&-2&1\end{array}\right][/tex]

is ...

  [tex]\left[\begin{array}{ccc|c}1&0&0&-9\\0&1&0&-1\\0&0&1&8\end{array}\right][/tex]

This means the solution is (x, y, z) = (-9, -1, 8).

_____

Additional comment

In case you haven't learned how to use your graphing calculator to solve matrix equations, you can solve this system easily as follows:

Subtract 2 times the first equation from 3 times the third equation. This eliminates the x and z terms and gives you the value of y. (y=-1)

Substitute that value into the first and second equations. This gives you two equations in the sum and difference of x and z. (You may need to divide the coefficients by the common factor.) Add these sum and difference equations to find one of the variables, then substitute to find the other.

Answer: C

Step-by-step explanation:

No matter how big the number you are dividing by you cannot go below 0.

(positive division)

so that rules out A & B.

(D) 10 - 100 = -90.

(C) 1 - 100 = -99.

C has the least value.

Answer:

D. 13 x 9

Step-by-step explanation:

12 11/16 is closer to 13 than 12.

8 3/4 is closer to 9 than 8.

Hopefully this helps!

Brainliest please?

the answer is 33 because 3+3=6*10-35+2

Answer:

A:-18

B:-20

C:18

Step-by-step explanation:

Answer:

= -25x-19/10

Step-by-step explanation:

Answer:

800.10

Step-by-step explanation:

every part after than and is behind a decimal point.

Answer:

Step-by-step explanation:

We actually don't need to know all of the restrictions.

We know that a vertical stretch factor of 4 means multiplying a square root function by [tex]4[/tex]. So, the answer will be in the form [tex]y=4\sqrt{x+c}+k[/tex], where c and k are real numbers.

Aha! Only one of these conditions satisfy the restrictions, so we have that [tex]\boxed{y=4\sqrt{x+3}+7}[/tex] has to be the answer.

Answer:

225

Step-by-step explanation:

(90000÷325)×65=18000

18000÷80=225

reading rate of 225 words per minutes

Answer:

[tex] \frac{9 - 15}{2 - 0} = \frac{3 - 9}{4 - 2} = - \frac{6}{2} = - 3[/tex]

Answer:

52.5 Km

Step-by-step explanation:

90:60*35=

1.5 * 35=

52.5 Km

Answer:

52.5 km/h

Step-by-step explanation:

convert in m/s

90km×1000m=90000m

1hr=3600sec

9000m÷3600sec÷35m/s

35m/s×60÷2100

35m/s×2100÷52500

52500m÷1000m=52.5km

Answer:

t and the tree is the relationship of

A brick of himalayan salt measures 20 x 10 x 4 and weighs 1 kg and 600 gs. then the density will be; 0.002 kg/cubic unit.

Density is like rate. It tells you how much of a thing is available for each unit other thing which contains the first thing. Suppose that a finite amount of substance is there having its properties as:

mass of substance = m kg

density of substance = d kg/m³

volume of that substance = v m³

Then, they are related as:

d = m/v

Given that a brick of himalayan salt measures 20 x 10 x 4 and weighs 1 kg and 600 gs.

Density = Mass / Volume

Density = 1.6 kg / 20 x 10 x 4

= 0.002 kg/cubic unit.

Learn more about mass, volume and density relation here:

https://brainly.com/question/952755

#SPJ2

Answer:

The slope of (1,-11) should be 3 and the slope of (-2,-4) should be 0

Step-by-step explanation:

Actually im unsure please dont use this I thought I knew!

The question is an illustration of solving equations using estimates.

The student's strategy makes sense because he uses estimation to solve the given equation

The correct sequence of equation is as follows:

We have:

[tex]\mathbf{159 - 73}[/tex]

Add 0 to the equation

[tex]\mathbf{159 - 73 =159 + 0- 73}[/tex]

Express 0 as 1 - 1

[tex]\mathbf{159 - 73 =159 + 1 - 1- 73}[/tex]

[tex]\mathbf{159 - 73 =160 - 1- 73}[/tex]

Add another 0

[tex]\mathbf{159 - 73 =160 - 1- 73 + 0}[/tex]

Express 0 as 3 - 3

[tex]\mathbf{159 - 73 =160 - 1- 73 + 3 - 3}[/tex]

[tex]\mathbf{159 - 73 =160 - 1- 70 - 3}[/tex]

Rewrite as:

[tex]\mathbf{159 - 73 =160 - 70- 1 - 3}[/tex]

Solve

[tex]\mathbf{159 - 73 =90- 4}[/tex]

[tex]\mathbf{159 - 73 =86}[/tex]

Read more about estimation and equations at:

https://brainly.com/question/18454732

answer →a murder most heinous and a narrator who fights his insanity

Answer:

0,40789

Step-by-step explanation:

To pick 1 red marble (from 5 red) from all 20 marbles is 5/20 = 0.25

To pick 1 green marble (from 3 green) from 19 because we already took red marble is 3/19 = 0.15789

The probability of randomly choosing a green marble after you have chosen red is 3/68.

Given

A jar has 20 marbles: 3 green, 12 blue, 5 red.

In probability theory, an event is a set of outcomes of an experiment or a subset of the sample space.

The total number of marbles = 20

The number of green marbles= 3

The number of blue marbles = 12

The number of red marbles = 5

The probability of choosing a red marble = Number of red marbles / Total number of marbles

= 5/20

The probability of choosing a green marble is =  Number of green marbles / New total number of marbles

= 3/19

Therefore,

The probability of randomly choosing a green marble after you have chosen red is;

[tex]\rm=\dfrac{5}{20}\times \dfrac{3}{19}\\\\=\dfrac{1}{4}}\times \dfrac{3}{19}\\\\ = \dfrac{3}{68}[/tex]

Hence, the probability of randomly choosing a green marble after you have chosen red is 3/68.

To know more about probability click the link given below.

https://brainly.com/question/743546

Answer:

27

Step-by-step explanation:

15+40+10+40+30=135.

135÷5 I.e the total average of the number.

135÷5=27

Answer:

27

Step-by-step explanation:

15+40+10+40+30=135

135/5

Because 5 is the number of numbers

=27

Answer:

After depositing rs. 1500 ratan got rs. 7500 in his bank account. When he withdrew 1/3 of 7500, he withdrew rs. 2500 from his bank account.. so left amount in bank is 7500-2500= 5000 rupees

Step-by-step explanation:

brainliest

Answer:

17%

Step-by-step explanation:

2/12 or the eggs are cracked. That means 1/6 of the eggs are cracked.

1/6 approximately equals 0.167

So, it is approximately 16.7%, or if you round it up, 17%.

Answer:

16.67 %

Step-by-step explanation:

two of a dozen is 2/12 simplified is 1/6 and 1/6 in a percentage is 16.67%

Answer:

10:A 11:D

Step-by-step explanation:

10)

g([tex](\sqrt{x+1}^2+3)/(\sqrt{x+1} )[/tex]

rewrite [tex]\sqrt{x+1}^2[/tex] as x +1

g [tex](\sqrt{x+1}^2)[/tex] = [tex]\frac{x+1+3}{\sqrt{x+1} }[/tex]

add 1+3

g[tex](\sqrt{x+1}^2)[/tex]=[tex]\frac{x+4}{\sqrt{x+1} }[/tex]

combine and symplify

[tex]g{\sqrt{x+1} } *\frac{{x+4 (\sqrt{x+1}) } }{{x+1} }[/tex]

reorder factors of the second side

[tex]g{\sqrt{x+1} } *\frac{{\sqrt{x+1} (x+4) } }{{x+1} }[/tex]

take out the root x+1

and you are left with A

11.

f(g(x))

substitue g into f

f([tex]f{\sqrt{x+3} } =\((\sqrt{x+3})^2 +9}[/tex]

rewrite sqrroot x+3 as x+3

[tex]f{\sqrt{x+3} } =\(x+3 +9}[/tex]

Now add 3+9

[tex]f{\sqrt{x+3} } =\(x+12}[/tex]

we get x+12

Now for domain

[tex]f{\sqrt{x+3} } =\((\sqrt{x+3})^2 +9}[/tex]

set the radicand root sqr x+3 >= 0 to find the expression defined

[tex]x+3\geq 0[/tex]

subtract 3 from both sides

[tex]x\geq 3[/tex]

turn it into interval notation

[-3,+∞)

Answer:

Step-by-step explanation:

You can find the perfect squares that are closest to this by listing the perfect squares and seeing which two this square would be between, which is the square root of 36 and the square root of 49:

[tex]\sqrt{36} < \sqrt{40} < \sqrt{49}[/tex]