Please help with this question I really need help

Answer:

[tex]Average\ Speed = 60 mi/hr[/tex]

Step-by-step explanation:

Given

[tex]Distance = 345\ miles[/tex]

[tex]Time = 5\ hours\ 45\ minutes[/tex]

Required

Determine the average speed

This is calculated as thus:

[tex]Average\ Speed = \frac{Distance}{Time}[/tex]

Convert time to hour:

[tex]Time = 5\ hours\ 45\ minutes[/tex]

[tex]Time = 5\ hours + \frac{45}{60}\ hour[/tex]

[tex]Time = 5\ hours + \frac{3}{4}\ hour[/tex]

[tex]Time = \frac{20 + 3}{4}\ hours[/tex]

[tex]Time = \frac{23}{4}\ hours[/tex]

[tex]Time = 5.75\ hours[/tex]

[tex]Average\ Speed = \frac{Distance}{Time}[/tex]

[tex]Average\ Speed = \frac{345}{5.75}[/tex]

[tex]Average\ Speed = 60 mi/hr[/tex]

Answer:

18

Step-by-step explanation:

3 3/8 becomes 27/8.

27/8 x 16/3=18

You have to flip 3/16 since you are dividing.

Answer:18

Step-by-step explanation:

3 3/8 devided by 3/16=18

18 + 7/9

14 + 7/8

First, rewrite each fraction in terms of a common denominator. 8 and 9 don't share a common multiple until 8 * 9 = 72, so we have

7/9 = (7/9) • (8/8) = (7 • 8)/(9 • 8) = 56/72

7/8 = (7/8) • (9/9) = (7 • 9)/(8 • 9) = 63/72

Next, write each whole number in terms of fractions with the same denominator. We have

18 • 72 = 1296  ==>  18 = 1296/72

14 • 72 = 1008  ==>  14 = 1008/72

Write each mixed number as an improper fraction:

18 + 7/9 = 1296/72 + 56/72 = (1296 + 56)/72 = 1352/72

14 + 7/8 = 1008/72 + 63/72 = (1008 + 63)/72 = 1071/72

If the backpack and book together weigh 18 + 7/9 pounds, and the backpack without the book weighs 14 + 7/8 pounds, then the book alone weighs the difference, call it b :

b = (18 + 7/9) - (14 + 7/8)

b = 1352/72 - 1071/72

b = (1352 - 1071)/72

b = 281/72

Convert this to a mixed number. 72 • 4 = 288, so 72 • 4 - 7 = 281:

b = (72 • 4 - 7)/72

b = (72 • 4)/72 - 7/72

b = 4 - 7/72

b = (3 + 1) - 7/72

b = 3 + (1 - 7/72)

b = 3 + 65/72

Answer:

1/15

Step-by-step explanation:

1. You can divide 1/3 by 5 by changing the division symbol to its reciprocal, multiplication, and also divide by the reciprocal of the number after the symbol, 5. The reciprocal of 5 is 1/5.

2. Now you can do 1/3 multiplied by 1/5. Multiply the numerators by the denominators. The numerators are 1 and 1, so you multiply 1 by 1 which equals 1. Now you multiply the denominators, 3 and 5, which is equal to 15. If the numerator is now 1, and the denominator is 15, the new fraction is 1/15, getting you to your answer

Answer:

4

Step-by-step explanation: You have to do y-y over x-x. So -1 minus-5 which equals 4. Then 5 minus 4 which equals 1. So you divide the answers you got 4÷1=4

Answer:

Step-by-step explanation:

Find the question attached.

Given the zero of the polynomial 5+3i and 0, this means that (x-0) and (x-(5+3i)) are factors

Multiplying the factors together we have;

= x((x-(5+3i))

= x(x-5-3i)

= x²-5x-3xi

Hence the polynomial expression of the zeros is x²-5x-3xi

Answer:

what are the answer chooice bc i cant see the picture

Step-by-step explanation:

Answer: 0=0

Step-by-step explanation: Simplify

Answer:

x = y/ 4  + 3

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helps :)

Answer:

VW = 36

Step-by-step explanation:

From the question, we are given:

VW = 5x - 4, UV = 2x,

UW = 52

Hence,

UV + VW= UW

2x + 5x - 4 = 52

7x = 52 + 4

7x = 56

x = 56/7

x = 8

VW = 5x - 4,

VW = 5(8) - 4

VW = 40 - 4

VW = 36

Answer:

C

Step-by-step explanation:

It's another way of saying where the lines cross. So if the input value (x) = 1 then both lines have an output value of 1.

Answer:

C   30(30 – x) = 540

Step-by-step explanation:

I did it on edg

Answer:

3) 30(30-x)=540

Step-by-step explanation:

answer on edge

True.

When you break it down, it's 0.45 compared to 0.50, so 0.5 is greater than 0.45 by 0.05. Also, 0.5 is closer to 0.

Answer:

2.370

Step-by-step explanation:

In this, the word "and" means the decimal point so:

two and 3

=

2.3

so the tenths place would be the first number after the decimal point, you can think of it as counting backwards. 1000  100  10  "0"  0.1  0.01  0.001

                                                thousnd hundrd tn zro tnths hundrds thousndths

so the 3 hundred would be 0.3 and the sevenTY thousandths would be 0.070

so add that all up and you get:

2.370

or

two and three hundreds seventy thousandths

Hope this helped! Pls Brainliest! It would help and mean a lot! ; )

Answer:

freeeeeeeeeeeeeeeeeeeeeeeee

Step-by-step explanation:

trump 20202020202020020202020

Answer:

d. 16 and 6

Step-by-step explanation:

Triangle area = (base × height)/2

A = (8 × 12)/2 = 96/2 = 48

A = (16 × 6)/2 = 96/2 = 48

Answer:

7+(-11)

Step-by-step explanation:

because it starts from 0 to 7 then goes down 11

so 7+(-11)

brainlist pls ;>

Answer:

I don't see the screenshot and i'm not going to download it...

Step-by-step explanation:

yikes

Answer:

6.333

Step-by-step explanation:

Our triangle vertices are

(1,1)(5,1)(2,9)

We are to perform interpolation at point(3,5)

x and y values are interpolated

On vertices (5,1)(2,9)

x = 3

x1 = 5

X2 = 2

Y1 = 1

Y2 = 9

Formula for interpolation

Y = [y1+(x-x1)(y2-y1)]/x2-x

Y = 1+(3-5)(9-1)/2-5

Y = 1+[-2*8/-3]

Y = 1+16/3

From here we use use LCM to get:

19/3 = 6.333

Answer:

many take time and solve it step by step

Step-by-step explanation:

sorry I am lost

Answer: 23/99

Step-by-step explanation: I’m assuming it’s supposed to be repeating but if not the answer will be 2323/10000.

Answer:

above is right

Step-by-step explanation:

Answer:

(a) 15 - 4x

(b) 6.6

(c) 5.7143%

Step-by-step explanation:

The given problem is incomplete. Please find attachment of the complete description.

According to the question:

[tex]f(x)=11-x^2[/tex]

now,

(a)

[tex]f(a)=11-2^2[/tex]

       [tex]=7[/tex]

[tex]f'(x)=-2x[/tex]

[tex]f'(2)=-4[/tex]

[tex]f(x)=f(a)+f'(a)(x-a)[/tex]

       [tex]=7-4(x-2)[/tex]

       [tex]=7-4x+8[/tex]

       [tex]=15-4x[/tex]

(b)

[tex]f(2.1)=15-4\times 2.1[/tex]

         [tex]=6.6[/tex]

(c)

[tex]Error=\frac{100\times \left | 6.6-7 \right |}{7}[/tex]

          [tex]=5.7143[/tex]%

Answer:

8/15

Step-by-step explanation:

Answer:

89

eighty-nine

Answer:

Step-by-step explanation:

in this problem we are expected to solve for the diameter of each circle pendant and add them to get the height of the complete pendant.

we know that the circumference is given as

C=πd

for the small circle

C=6cm

6=3.142d

d=6/3.142

d=1.9cm

for the big circle

C=8cm

8=3.142d

d=8/3.142

d=2.5cm

the height then is 1.9+2.5=4.4cm