Mr. Whittaker’s science class uses tide gauges to measure annual variations in water levels at different parts of a river, and then compares those variations to the average annual trend. Matea recorded that the water level in one part of the river fell 1.05 millimeters per year for 2.48 years. This data will be compared to the average annual trend, which shows the water level rising 1.8 mm/year. Which number represents the rate at which the water level fell? Which number should the rate be multiplied by to find the total variation in water level?

Answer: He is correct , equal to, equal to

Step-by-step explanation:

I think

Answer: 320 miles

Step-by-step explanation:

First, we need to make an equation. However, we can’t fight to label the variables:

t = total number of miles

h = number of hours

Now let’s set up our equation:

t = 50h + 65h

The good thing is that we know how many hours each speed was held for, so we can substitute it in the equation.

t = 50(2.5) + 65(3)

t = 125 + 195

t = 320

Therefore, the total number of miles traveled is 320.

The total distance in miles that Kylie’s family traveled during this time is 320 miles.

An equation is an expression that shows the relationship between two or more numbers and variables.

Given that Kylie traveled at an average speed of 50 miles per hour for 2.5 hours and then traveled at an average speed of 65 miles per hour for 3 hours.

First, we need to make an equation thus we have;

t = total number of miles

h = number of hours

Now let’s set up our equation as;

t = 50h + 65h

Now we can substitute it in the equation.

t = 50(2.5) + 65(3)

t = 125 + 195

t = 320

Therefore, the total number of miles traveled is; 320 miles.

Learn more about equations here;

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Answer:

B for the first one

Step-by-step explanation:

Answer: B.

Step-by-step explanation:

Answer:

True?

Step-by-step explanation:

Answer:

143°

Step-by-step explanation:

supplementary = add to 180°

180°-37°=143°

Hope this helps :)

Luis drank 48 quarts of juice. This is calculated by multiplying the known quantity of 12 gallons by the conversion factor of 4 quarts per gallon.

This question involves a unit conversion from gallons to quarts. In the US customary measurement system, we know that 1 gallon is equal to 4 quarts. Since Luis drank 12 gallons of juice, to find out how many quarts Luis drank we would perform the following multiplication:

12 gallons x 4 quarts/gallon = 48 quarts

Therefore, Luis drank 48 quarts of juice.

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Answer:

Use a protractor

Step-by-step explanation:

Im still working on it give me a sec.

Answer:

130.3 ft²

Step-by-step explanation:

Surface area is the sum of areas of outer faces

2 rectangles + 2 triangles + curved surface area of the cylinder

2(4×6) + 2(½×6×5) + 2×3.14×(2/2)×4

48 + 30 + 25.12

103.12 ft²

Answer:

The answer is C

Step-by-step explanation:

I did the math

Answer:

hey try photomath

Step-by-step explanation:

.

Answer:

Step-by-step explanation:

[tex]\frac{1}{2}(4a+2b+2)=\frac{1}{2}*2*(2a+b+1)\\\\=2a+b+1[/tex]

Answer:

How many siblings does the average 6th-grade student have?

Step-by-step explanation:

In order to know the average, you need to collect all the amounts of siblings 6th grade students have and then you need to add them all together and divide by how much numbers there are and you'll get your average.

5/2 = 2.5

4/16 = 0.25

2.5/0.25 = 10

Your answer would be 10

hope it helps!

Answer:

20/81.

Step-by-step explanation:

There are 5 odd numbers in 1 to 9 and 4 even ones.

Prob(Odd number on first spin) = 5/9

Prob(Not flipping heads on second) = 1/2

Prob(Not spinning a 6 on third ) =  8/9

The compound probability is found by multiplying the above ( because each trial is independent of the others):

Answer = 5/9 * 1/2 * 8/9

= 40/162

= 20/81.

Answer:  f(x) = (x + 3)(x – 7)

Step-by-step explanation:  Use "standard form" of the function and insert values given: vertex (2,-25) intercept point (7,0)

f(x) = a(x-h)² + k   from vertex, h is 2   y is -25   from intercept,  x is 7  f(x) is 0

to find a,  0 = a(7-2)² +(-25)   0 = a(7-2)² -25  add 25 to both sides

25 = a(5)²  25 = 25a  25/25 = a  1=a  (seems useless but verifies implied "a"coefficient is 1)

f(x) = a(x-h)² + k solve to get the quadratic form

f(x) = (x-2)² -25     (x - 2)² is x² -4x +4

f(x) = x² -4x +4 -25  simplify

f(x) = x² -4x - 21   then factor

f(x) = (x + 3)(x - 7)

Answer:

f(x) = (x + 3)(x - 7)

Answer:

4

Step-by-step explanation:

trust me bro

Answer:

i'm pretty sure it's B. X=-24 and x=24

Step-by-step explanation:

Answer:

3.6 cm

Step-by-step explanation:

The area of a trapezoid is found by

A = 1/2 (b1+b2)*h

We know the area of 4.5  and the top is 1 and the bottom is 1.5

4.5 = 1/2 (1+1.5) h

4.5 = 1/2 (2.5) h

4.5 =1.25h

Divide each side by 1.25

4.5/1.25 = 1.25h/1.25

3.6 =h

Answer:

[tex]3.6 \: \: cm[/tex]

Step-by-step explanation:

[tex]area \\ 4.5 = \frac{1}{2}(a + b ) \times h \\ 4.5 = \frac{1}{2} (1 + 1.5) \times h \\ 4.5 = \frac{1}{2} \times 2.5 \times h \\ 4.5 = \frac{2.5h}{2} \\ 4.5 = 1.25h \\ \frac{4.5}{1.25} = \frac{1.25h}{1.25} \\ h = 3.6 \: cm[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

x = 39

Step-by-step explanation:

To solve for x, we have to get it by itself in the equation.

In this problem, we have to do the opposite of subtraction and add 36 to the left and right side of the equation.

3 + 36 = x - 36 + 36

36 + 3 is equal to 39 and -36 + 36 cancels out.

This leaves us with 39 = x.

Answer:

( -5,-1, 0, 1, 3, 10,16)

Step-by-step explanation:

Order of number from least to greatest is thus

( -5,-1, 0, 1, 3, 10,16).

Answer: 8 hours

Step-by-step explanation:

60$/7.5$ = 8

Answer:

8 hours

Step-by-step explanation:

60/7.5 = 8

Answer:

5.94

Step-by-step explanation:

Given the following information:

Ages of 4 zebras from a wildlife

=> the sample mean of this date is

= [tex]\bar X = \frac{\sum_{i=1}^n X_i}{n}[/tex]

=[tex]\bar X = \frac{2+9+14+15}{4}= 10[/tex]

The standard deviation can be determined by using this formula:

[tex]s = \sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}[/tex]

<=> [tex]s = \sqrt{\frac{(2-10)^2 +(9-10)^2 +(14-10)^2 +(15-10)^2}{4-1}} =5.94[/tex]

Answer:

138 m

Step-by-step explanation:

Answer:

6k^3(2 - 5k)

Step-by-step explanation:

12k^3 - 30k^4

Factor out 6k^3

6k^3(2 - 5k)

Answer:

[tex]6k^3(2-5k)[/tex]

Step-by-step explanation:

Find the GCF, 6.

Factor out [tex]6k^3[/tex]:

[tex]12k^3-30k^4\\6k^3(2-5k)[/tex]

Finito.

Answer:

Yes that would be correct!

Step-by-step explanation:

You need 5a and 34 are needed in the equation and so is the x symbol

Answer:

Step-by-step explanation:

Answer:

500 cm2

Step-by-step explanation:

The dimensions of the prism are 7 cm, 9 cm and 20 cm.

So the three areas we want to find are three rectangles, with the sides:

7 cm and 20 cm, 9 cm and 20 cm, 9 cm and 20 cm

The area of each rectangle is:

rectangle_1 = 7 * 20 = 140 cm2

rectangle_2 = 9 * 20 = 180 cm2

rectangle_3 = 9 * 20 = 180 cm2

Summing all these three areas, we have:

Total area = 140 + 180 + 180 = 500 cm2

Answer:

500 Square Centimeters

Answer:

980.6

Step-by-step explanation:

V=πr2h

3=π·11.12·7.6

3≈980.5916

Answer:

980.6 in³

Step-by-step explanation:

V=[tex]\frac{1}{3} \pi r^{2} h\\[/tex]

H=7.6          R=11.1

V=[tex]\frac{1}{3} \pi r^{2} h[/tex]

V=[tex]\frac{1}{3} \pi (11.1)^{2} (7.6)[/tex]

V=980.59159815

V=980.6 in³

Answer:

The answer is B.

Step-by-step explanation:

9 : 12 = 3 : 4

12 : 16 = 3 : 4

Known :

LMNOP ~ QRSTU

OP = 12

LM = 9

QR = 12

Asked :

TU = ...?

Answer :

[tex] \frac{op}{tu} = \frac{lm}{qr} \\ \frac{12}{tu} = \frac{9}{12} \\ tu = \frac{12 \times 12}{9} \\ tu = \frac{12 \times 12}{3 \times 3} \\ tu = 4 \times 4 \\ tu = 16[/tex]

So, the side of TU is 16 (B)

Hope it helpful and useful :)