CAN SOMEONE PLZ HELP ME ON THIS ONE

Answer:

2.60

Step-by-step explanation:

z-score is the difference between the score and mean, divided by the standard deviation.

[tex]z = \frac{x - \mu}{\sigma}[/tex]

[tex]z = \frac{91-77.5}{5.2} = \frac{13.5}{5.2} \approx 2.596[/tex]

So 2.6 is an answer close enough.

Answer:

33 degrees Fahrenheit.

Step-by-step explanation:

If the temperature was 48 degrees, and it dropped 15, that means the initial temperature was subtracted by 15.

48 - 15 = 33.

Answer:

33°F

Step-by-step explanation:

The initial temperature was 48°F. Then, it dropped by 15°.

I am assuming that both values are given in the same unit.

48 - 15 = 33

The temperature should be 33 degrees now.

Hope this helps.

Answer:

C

Step-by-step explanation:

i dont really know anything about angles but it looks like the 3x is the exact same angle as 30 degrees on the other side of it

3x=30

x=10

~Answer~

Substitute your numbers:

y = 5x

For the first one, y equals 5, so substitute 5 for y.

So, 5 = 5x.

What multiplied by 5 gives 5? The answer is 1.

So, the first one is 1.

Do the same for all the others.

So, 4 = 5x.

4 = 5(4/5)

As a decimal that equals 0.8.

For the last one, I can't tell if that is saying 2 or .2 so I'll do both.

for 2, you will do 2 = 5x and for .2, you will do .2 or 0.2 = 5x.

For 2, it would be 2/5 or 0.4.

For .2 or 0.2, it would be 0.04.

So,

x                                                             y

1                                                             5

4/5 or 0.8                                             4

0.4 if it is 2 and 0.04 if it is 0.2.        2

(looking back, I'm pretty sure it was just 2 and not .2)

I hope this is what u were looking for, if not I'm so sorry for a useless answer.  I wasn't completely sure whether I was doing it right since I haven't done these types of math problems in some time.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Answer:

What kind of Equation?

Quadratic Equation.

Linear Equation.

Radical Equation.

Exponential Equation.

Rational Equation.

You don't need help my dude, you already have all of the right answer. Good job!!!

Answer:

2/3 divided by 4/5 = 5/6

Step-by-step explanation:

Arianna working:

2/3 divided by 4/5

= 2/3 x 4/5

= 8/15

Correct working:

2/3 divided by 4/5

= 2/3 ÷ 4/5

Multiply 2/3 by the reciprocal of 4/5

= 2/3 × 5/4

= (2*5) / (3*4)

= 10/12

= 5/6

2/3 divided by 4/5 = 5/6

Arianna's mistake was she didn't multiply by the reciprocal of 4/5

Answer:

x = 1, x = -1

Step-by-step explanation:

-x² = -1

x² = 1

x = ±1

Answer:

The answer is 8.66054037 as a decimal. It's asking for a root though.

Step-by-step explanation:

Answer:

its b

Step-by-step explanation:

got it right on edge

The volume of the metal in the cylinderical pipe given the dimensions of the larger and smaller cylinders is 271.30 mm³.

A cylinder is a three-dimensional object. It is a prism with a circular base.

Volume of a cylinder = nr^2h

Where:

The volume of the metal in the cylinderical pipe = 3.14 x 10 x [(8.4/2)² - 6/2)²] = 271.30 mm³

To learn more about to determine the volume of a cylinder, check: https://brainly.com/question/9624219

#SPJ2

Answer:

x=0

y=7

Step-by-step explanation:

Divide 6x-4y=-28 by -2..... -3x+2y=14

3x+5y=35

-3x+2y=14

--------------

7y=49

y=7

6x-4*7=-28

x=0

Step-by-step explanation:

For #7 and #8, they have given you the answer of the product but without decimals.

You can just add up all the decimal places for this kind of multiplication.

For example, 6.543 and 2.6 have 4 decimal places in total (underlined), so just count four: 17.0118.

Answer:

$17.64

Step-by-step explanation:

First multiply 2.94 and 1.5 to find the price for 1.5 gallon os milk.

2.94 x 1.5 = 4.41

Then you multpily by 4 to see the balance after 4 weeks

4.41 x 4 = 17.64

Answer:

$40

Step-by-step explanation:

convert gallons to quart

1 gallon = 4 quarts

5 x 4 = 20 quarts

total cost = 20 x 2 = $40

Answer:

t is less  than or equal to 19

Step-by-step explanation:

t-7<12

+7

t is less than or equal to 19

Answer:

42  .. isn't that the answer to everything?   :P

Step-by-step explanation:

==========================================================

Explanation:

Let's use (x,y) notation to denote the results of the two dice. So x is the first dice value and y is the second. Something like (2,1) means we rolled a '2' on the first die, and a '1' on the second die. The order matters.

We want both x and y to be odd, and we also want x+y < 5.

Here are all of the ways to fit those conditions:

There are 3 ways to achieve this goal out of 6*6 = 36 ways to roll two dice without any restriction. The probability we're aiming for is 3/36 = 1/12

Side note: 1/12 = 0.0833 = 8.33% approximately.

Answer:

41 purple marbles

Step-by-step explanation:

x= amount of purple marbles

3x+x=164

4x=164

x=164/4=41

Answer:

Step-by-step explanation:

Answer:

2.99 cm

Step-by-step explanation:

V= [tex]\frac{4}{3}[/tex](pi)(r^3)=113.04cm^3

113.04/ [tex]\frac{4}{3}[/tex](pi) = r^3 = 26.99

r=[tex]\sqrt[3]{26.99}[/tex] = 2.99cm

Answer:

Step-by-step explanation:

Answer is 3

Answer:

option d

Step-by-step explanation:

First we find the probability of getting green, then we can subtract the result from 1 to find the probability of not getting the green crayon

P( green )    

[tex]\frac{12}{45+12+25+8} \\= \frac{2}{15}[/tex]

P '(green) = 1 - 2/15

= 13/15

Answer:

see explanation

Step-by-step explanation:

(a)

The area is calculated as length × breadth

area = 2x(2x + 6) ← distribute

       = 4x² + 12x

(b)

area = x(x + 4) ← distribute

       = x² + 4x

(c)

shaded area = 4x² + 12x - (x² + 4x)

                      = 4x² + 12x - x² - 4x ← collect like terms

                      = 3x² + 8x

Answer: It is 23,000 Millimeters

Step-by-step explanation:

23 Meters =  23,000 Millimeters

Answer: maybe 2mm?

Step-by-step explanation:

Answer:

1. 192 or 12^4       13. 4c^7 d^13

2. 8x^6                 14. 16f^10 g^22

3. x^8                    15. x^4y^4

4. 4x^5                  16. xy

5. 6^2                    17. x^12/64y^9

6. 1/x^3                  18. x^8/256y^16

7. 1                         19. 1/y^7

8. -1                        20. 1/49

9. y^12                    21. x^5

10. x^8y^4              22. 16

11. 3x^3                   23. x^4

12. 2x^3                  24. 1/x^6

                               25. x^2

                               26. 1/j^3

Hope this helps! :)

Answer:

134.1 ft²

Step-by-step explanation:

Fine the area of the square first, then subtract the area of the circle to find the area of the shaded part.

The area of the square

= 25²

= 625 ft²

The radius of the circle

= 25 ÷ 2

= 12.5 ft

The area of the circle

= π × 12.5²

= 490.87385...

= 490.9 ft² (rounded up to the nearest tenth)

The area of the shaded part

= 625 - 490.9

= 134.1 ft²

Answer:

a)47/8

b)53/12

c)31/6

d)53/6

e)68/5

f)64/9

Step-by-step explanation:

Answer:

First add the fraction then the whole number

Step-by-step explanation:

a)47/8

b)53/12

c)31/6

d)53/6

e)68/5

f)64/9

Answer:

2.6 in^2

Step-by-step explanation:

A=a+b

2h=0.6+2

2·2=2.6

Answer: 2.6

Step-by-step explanation:

A= h(b1+b2)

Answer:

it's 128 x 72 =9,216

Step-by-step explanation:

N = 560