Ratio question. Please see picture

Answer:

67%

Step-by-step explanation:

First of all, we must find the decrease;

39 - 13

=26

Then we can find the percentage decrease

26/13 ×100 =66.666..which can be written as 67.

9514 1404 393

Answer:

  d.  60

Step-by-step explanation:

Rotation is CCW and is more than 30°. The only reasonable answer choice is 60° (d).

Answer:

0.55

Step-by-step explanation:

Standard Error of the mean= Standard deviation/sample size

[tex]=\frac{3.26}{\sqrt{35} }[/tex]

[tex]=\frac{3.26}{5.916}[/tex]

[tex]=0.55104057[/tex]

About 0.55

Please give me brainliest, I really need it.

Answer:

B. 0.55

Step-by-step explanation:

correct on plato:)

Answer:

thank you

Step-by-step explanation:

Answer:

(245 / (6^2 - 1)) + 15 = 22

Step-by-step explanation:

Well we need to divide 245 by something - and by something that divides it, otherwise we can't solve this. It's not divisible by 6^2 = 36, it's not divisible by 6^2 - 1 + 15 = 50 and it's not divisible by 6^2 - (1 + 15) = 20. Our only option is (6^2 - 1) = 35

245/35 = 7 and we notice that 7 + 15 = 22, so we've solved it.

Answer:

D: 5(9a-2b)

Step-by-step explanation:

Each expression in the choices is factored, so we need to see how to factor the given expression.

To factor the given expression, you need to factor out the greatest common factor of both terms.

The terms are 45a and -10b.

The GCF of 45 and -10 is 5.

The GCF of a and b is 1. There is no common factor other than 1.

The GCF of the 2 terms is 5, so we factor out a 5.

45a - 10b = 5(9a - 2b)

Answer: D: 5(9a-2b)

Answer:

y= -2x+4

Step-by-step explanation:

1) if they want an equation where y depends on x, then you need to write the equation in slope-intercept form.  Or... y=mx+b  where m is the slope and b in the y-intercept.

2) looking at the line, it intercepts y at 4, so that is your intercepts or "b"

3) the slope is the change in the y values over the change in the x values for any two points.  Notice if you choose the point (0,4) and (2,0) the change in the y values is -4 and the change in the x values is 2.  Therefore, the slope is -4/2 or -2.  -2 is your m.

4) once you plug those values in to y=mx+b, you have y= -2x+4

Answer:

x = 3.5

Step-by-step explanation:

Using the Pythagorean theorem:

x² = 2.5² + 2.5² = 6.25 + 6.25 = 12.5

x = √12.5 = 3.54

Answer:

22 miles in 11 hours!

Step-by-step explanation:

We already know a ghost crab can travel 12 miles in 6 hours.

Now, we just need to find the how many miles per hour the crab walks.

We simply divide 12 miles by 6 hours which gives us 2 miles in 1 hour.

That means, we multiply 11 by 2 which gives us 22 miles!

The ghost crab can travel 22 miles in 11 hours. When you find the rate of change by dividing 12 by 6, it gives you 2 m/h. That enables you to find the amount of miles by multiplying 11 hours by two which gives you 22!

Answer:

1.171078646

Step-by-step explanation:

Answer:

7 and 3

Step-by-step explanation:

Answer: x  =  2  ,  − 2.5

since both equations are equal to y...

y = 2x + 10

y = -4x - 2

2x + 10 = y = -4x - 2

2x + 10 = -4x - 2

2x + (4x) = -2 + (-10)

6x = -12

x = -2

______________________________

plug in x = -2 into one of those equations: I will use y = 2x + 10

y = 2(-2) + 10

y = -4 + 10

y = 6

______________________________

okay, so I rechecked my answers several times, and I still got (-2,6)

That MC question has an error since none of the answer choices fit.

Inform your teacher about this.

(I'd say choose that (-3,4) since it works only for one equation y = 2x +10 .... maybe your teacher was supposed to use the other equation instead of y = -4x - 2)

Answer:

yes

Step-by-step explanation:

1 is smaller than ten

Answer:

10, 20, 40 and 50

5, 10, 20, 40

10, 50

Answer:

B (second one)

Step-by-step explanation:

2 x 2 = 4

4 x 1.5 or 1 1/2= 6

hope this helps

Answer:

1 1/2, 2 ,2,

also known as the second option

Step-by-step explanation:

Like A to C, also 6 units for C to B/ B to C.

Answer:

You didn't attach a picture of the models?

Answer:

b or d

Step-by-step explanation:

Answer:

it is located in quadrant II (2)

Answer:

point s

Step-by-step explanation:

it has s p r q  if you look at the s it shows 21 all you need to do is subtract it by 10 which gets you 11 when you look at it with 11 it match with s

Answer:

x=1/-3

Step-by-step explanation:

2×2-3x-5=0

4-3x-5=0

4-5-3x=0

-1-3x=0

-3x=0+1

-3x=1

x=1/-3

Answer:

5n=1m

Step-by-step explanation:

Answer:

5n=1m

Step-by-step explanation:

Answer:

[tex]A=(x+4)^2\text{ or } A=x^2+8x+16[/tex]

Step-by-step explanation:

We have a square garden. One side of the garden has a length of (x + 4).

And we want to write an expression that could represent the area of the garden.

Remember that for a square, all sides have equivalent lengths. So, every side measures (x + 4). The area of a square is given by:

[tex]A=s^2[/tex]

Where s is the length of one side.

Substitute:

[tex]A=(x+4)^2[/tex]

Expand if desired. Hence, the expression for the area is:

[tex]A=x^2+8x+16[/tex]

Answer: i think its b

Step-by-step explanation:

Answer:

Step-by-step explanation:

order of PEMDAS

therefore

Answer:

d=-1

Step-by-step explanation:

10(1+3d)= -20

divide both sides by 10

1+3d=-2

move the costant to the right, change the sign

3d=-2-1

caclulate

3d=-3

divide both sides by 3

d=-1