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Lynna [10]
3 years ago
11

Find the value of -7 - 8 - (-8) - 7. A) -30 B) 14 C) 0 D) -14

Mathematics
2 answers:
sergey [27]3 years ago
8 0
I got c but I might be wrong
sergejj [24]3 years ago
4 0

Answer:

A

Step-by-step explanation:

You might be interested in
Work out the value of: 5x - 2y when x = 3 and y = 4
KATRIN_1 [288]
The expression is 5x - 2y
Use PEMDAS and work out the rest
x = 3 and y = 4
5 x = 5 x 3 = 15
2 y = 2 x 4 = 8
15( x ) - 8 (y) = 7
The answer is 7

Hope This Helps You!
Good Luck Studying :)
4 0
3 years ago
Read 2 more answers
Find the average rate of change for the given function from x = 1 to x = 2.
Nadusha1986 [10]

Answer:

2

Step-by-step explanation:

The average rate of change from x=1 to x=2 is the same as finding the slope of a line at x=1 and x=2.

So we are going to need to corresponding y coordinates.

What y corresponds to x=1? y=3

What y corresponds to x=2? y=5

So we have the ordered pairs (1,3) and (2,5).

Line the points up vertically and subtract vertically then put 2nd difference over 1st difference.

(2 , 5)

-(1  , 3)

-----------

1      2

The average rate of change is 2/1 or just 2.

Now since we were asked to find the average rate of change given the function was a line, it really didn't matter what two points you used on that line.

7 0
3 years ago
Read 2 more answers
I just need the answer
dangina [55]

SOLUTION:

The best graph that fit the given description is option A

6 0
1 year ago
IM BEGGING YOU PLEASE HELP PLEASE HELP I NEED HELP PLEASE
I am Lyosha [343]

Answer:

area of shaded region: 21.07 ft²

<u>Given for semi circle:</u>

  • radius of semi-circle: 7 ft

<u>Given for rectangle:</u>

  • width: 7 ft
  • length: 14 ft

<u>Find area of rectangle:</u>

Length * Width

14 * 7

98 ft²

<u>Find the area of semi circle:</u>

1/2 * π * r²

1/2 * 3.14 * (7)²

76.93 ft²

<u>Area of shaded region:</u>

area of rectangle - area of semi-circle

98 ft² - 76.93 ft²

21.07 ft²

8 0
2 years ago
Calculate the fuel economy of your family or personal car in terms of gallons per mile and the total cost for one fill-up git hu
iren [92.7K]

Answer:

0.028 Gallons/mile

Step-by-step explanation:

1 Gallon = 3.78541 Litres

1 Mile    = 1.60934 Km

Total Fuel Expenditure (Dec 2019) = PKR 7,000

Fuel cost / Litre = 114Litre/Km

Total Fuel consumption = (7000/114)

                                      = 61.40 Litres or 16.22 Gallons

Total Distance Travelled in Dec 2019 = 921 Km or 572.28 miles

Fuel Economy = 16.22/572.28

                       = 0.028 Gallons/mile

One time tank fill up cost = PKR 1,500

6 0
3 years ago
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