someone please help me understand how to do this

Answer:

b

Step-by-step explanation:

After a bone, wood fragment, or shell is buried in sediment, it may be exposed to mineral-rich water that moves through the sediment. This water will deposit minerals into empty spaces, producing a fossil. Fossil dinosaur bones, petrified wood, and many marine fossils were formed by permineralization.

Answer: fossils can be formed only when a living thing is buried soon after it dies. If it is not buried soon enough, it decays. For this reason, most fossils are found in sedimentary rocks that were once under water.

Step-by-step explanation:

Answer:

$162

Step-by-step explanation:

Step 1: Multiply 540 by .3 (convert 30% to a decimal)

540 x 0.3= 162

Answer:

(4,3)

Step-by-step explanation:

2y = x + 2

x - 3y = -5

Rearrange the second equation to equal y.

x - 3y = -5

x + 5 = 3y

(x+5)/3 = y

Substitute into the first equation.

2y = x +2

2[(x+5)/3] = x + 2

(2x + 10)/3 = x + 2

2x + 10 = 3(x + 2)

2x + 10 = 3x + 6

10 - 6 = 3x - 2x

4 = x

Therefore, the correct ordered pair is (4,3) since x is equal to 4.

Answer:

Im sure that the answer is c

Answer:

C) 1 and 2

Plzzzz give me Brainliest!!!!!  

Answer:

1/3 × 6 = 2

Step-by-step explanation:

Probability of picking out a color is

23/138 + 23/138 = 46/138 = 23/69 = 1/3

Answer:

1:2

Step-by-step explanation:

You didn't really specify, but I'm going to assume you meant as simplified as possible. If you write it as a fraction, it will be ½ or as a decimal it will be 0.5.

Answer:

1:2

Step-by-step explanation:

Simplifying a ratio is like simplifying a fraction.

Simply put the number to the left as the numerator, and the number to the right as the denominator.

In this case, 3/6 = 1/2.

Hence, plug the numbers right back in and you get 1:2.

Hope this helped!

Answer:closed

Step-by-step explanation:

Answer:

[tex]\frac{\sqrt{2} }{8}[/tex]

Step-by-step explanation:

Using the exact values of the given trig functions, then

sin45° × sin30° × cos60°

= [tex]\frac{\sqrt{2} }{2}[/tex] × [tex]\frac{1}{2}[/tex] × [tex]\frac{1}{2}[/tex] = [tex]\frac{\sqrt{2} }{8}[/tex]

Answer:

(-4,7)

Step-by-step explanation:

(-4,-7) is in the bottom left corner on a graph. The x axis goes horizontal so if it reflects it would be at (-4,7)

Answer:

−5 /2 x + 3

Step-by-step explanation:

Answer:

2.5 or 5/2

Step-by-step explanation:

2x-3=2

2x=5 (both sides plus 3)

x=5/2 or 2.5(divid by 2 on both sides)

Answer:

180/7 or 25 5/7

Step-by-step explanation:

20/3 * 27/7

cross multiply 3 and 27, 20/1 * 9/7 is left. Then, cannot simplify anymore.

So the answer come out.

180/7 or 25 5/7

Answer:

(A = 2,3)(B = -2,-5)(C = 4,4)(D = -6,8)(E = 8,-6)(F = -8,-6)(G = 3, 2.5)

Answer: 4

Step-by-step explanation:

36,48,80

80 = 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

48 = 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

36 = 1, 2, 3, 4, 6, 9, 12, 18, 36

Answer:

3  6/8

Step-by-step explanation:

Answer:

31

Step-by-step explanation:

Answer:

The jazz band visited 124 cities and the rock band visited 53 cities. The solution is viable.

Step-by-step explanation:

Answer:

The jazz band visited 124 cities and the rock band visited 53 cities. The solution is nonviable.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Y = 5/2x on edge

The steepest graph is given by y= 5/2x.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

First, y= -2x

Here the slope is -2.

Second, y = -1/2 x

Here the slope is -1/2.

Third, y= 3/2x

Here the slope is 3/2 or 1.5

Fourth, y= 5/2x

Here the slope is 5/2 or 2.5

As, we know A steeper slope in a graph means that the rate of change is faster.

Then, y= 5/2x have steeper slopes.

Learn more about Slope here:

https://brainly.com/question/3605446

#SPJ7

Answer: 0.24

Step-by-step explanation: m = -6 / -25 = 0.24

Answer:

0.24

Step-by-step explanation:

cuz m = -6 / -25 = 0.24

hope this helps am in 8th grade and plz pick me as brainless

Answer:

A) 0.889

B) 0.895

Step-by-step explanation:

Mean of 53.8 inches, and Standard deviation of 7.5 inches.

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

A) What is the probability that a randomly chosen child has a height of less than 62.95 inches?

For x < 62.95

z = 62.95 - 53.8/7.5

z = 1.22

Probabilityvalue from Z-Table:

P(x<62.95) = 0.88877

Approximately = 0.889

B) What is the probability that a randomly chosen child has a height of more than 44.4 inches?

For x > 44.4 inches

z = 44.4 - 53.8/7.5

z = -1.25333

Probability value from Z-Table:

P(x<44.4) = 0.10504

P(x>44.4) = 1 - P(x<44.4) = 0.89496

Approximately = 0.895

Answer:

£22.5

Step-by-step explanation:

We would have to split the ratio to 45:45/2 as 2:1 is 2:2/2

Which would give us the answer 45:22.5

Sarah got £22.5

Answer:

x = 3.5, y = 2

Step-by-step explanation:

This is a system of equations.

Original equations:

[tex]4x+5y=24\\3x+7y=21[/tex]

Substitute y and solve for x:

→ [tex]y=\frac{24-4x}{5} \\2x+7y=21[/tex]

Substitute the value for y and simplify:

→ [tex]2x+\frac{7(24-4x)}{5} =21[/tex]

→ [tex]2x + \frac{(168 - 28x)}{5}=21[/tex]

Multiply by 5 on both sides

→ [tex]10x + 168-28x = 105[/tex]

Simplify → [tex]-18x = -63[/tex]

→ [tex]x = 3.5[/tex]

Plug in the value for x into either equation:

→ [tex]4*3.5 + 5y=24[/tex]

→ [tex]14+5y=24[/tex]

→ [tex]5y=10[/tex]

→ [tex]y=2[/tex]

Answer:

k

Step-by-step explanation:

dw

Answer:

K

Step-by-step explanation:

Dw. Please give me like

Answer:

F(-2) = 12

Step-by-step explanation:

F(-2) = (-2)²- 2(-2) + 4

= 4 - (-4) + 4

= 4 + 4 + 4

= 12

The required value of function F(x) = x² − 2x + 4 at F( -2 ) is 12.

A quadratic function is given F(x) = x² − 2x + 4, value of the function is to be determined at x = -2.

What is a polynomial function?

A polynomial function is a function that applies only integer dominions or only positive integer powers of a value in an equation such as the quadratic equation, cubic equation, etc. ax+b is a polynomial.

F(x) = x² − 2x + 4
Above given function is a quadratic function,
in order to find F(-2) , we have to put x = -2 in above given function.

F( -2 ) = ( -2 )² − 2( -2 ) + 4
F( -2 ) =  4 + 4 + 4
F( -2 ) =   16

Thus, the required value of function F(x) = x² − 2x + 4 at F( -2 ) is 12.

Learn more about polynomial function here:
https://brainly.com/question/12976257
#SPJ2

Answer:

I believe the first is arithmetic because it has a difference Of 6 between each number. The second is geometric because each number is divided by 4 to get the next number

Step-by-step explanation:

5, 11, 17, 23, 29, 35. (Difference of 6)

4000, 1000, 250, 62.5, 15.62, 3.90 (divide by 4)

As for the formulas I’m not sure, but I I would guess something like

an=6n-1

an=n/4

I am not sure about the formulas though

Answer:

B. a picture of Knife Edge Mirror Two Piece

Step-by-step explanation:

pls give brainliest, u don't have to

Did it on edge, hope u have a good day :)

Answer:

b

Step-by-step explanation:

Answer:

The first is equation the second is expression the third is expression and the fourth is equation

Step-by-step explanation:

equations have equal signs and expressions dont

Answer:

4

Step-by-step explanation:

Because if you have 2 apples and add 2 apples to that, you'll have a total of 4.

Answer:

4

Step-by-step explanation: thank you

Answer:

f(x) = 7 . x=1 .

Answer:

Answer choice D

Step-by-step explanation:

You can see that the triangles have dashes on them. side DE has two and side AB also has 2. If you rotate triangle ABC, you can also see that AB and DE are congruent.