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Lemur [1.5K]
3 years ago
10

2.2x-10=0.2x +14 and -4x+5=x-5

Mathematics
1 answer:
Tcecarenko [31]3 years ago
5 0

Answer:x=12 and x=2

Step-by-step explanation:

2.2x-10=0.2x+14

2.2x-10-(0.2x+14)=0

2.2x-0.2x-14-10=0

2x-24=0

2x=24

x=24/2

x=12

-4x+5=x-5

-4x+5-(x-5)=0

-4x-x+5+5=0

-5x+10=0

-5x=-10

x=-10/-5

x=2

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Maria lives 56 mile from the mall. On Saturday, she walked from her house to the mall and then back again. At the mall, she walk
ASHA 777 [7]
56 mile should be 5/6 mile
14 mile should be 1/4 mile

5/6 + 5/6 + 1/4 = 1 11/12 miles.

5/6 is added twice becaue Maria walked the path twice. Going to the mall and Coming from the mall.

(5/6 * 2/2) + (5/6 *2/2) + (1/4 *3/3) = 10/12 + 10/12 + 3/12 = 23/12
<span>23/12 = </span>1 11/12 miles.

Maria did not walk more than 2 miles. She only walked 1 11/12 miles.


6 0
3 years ago
Read 2 more answers
Ok so I just need to match the letter with the definition but I don’t get it help please!
mr Goodwill [35]

Answer:

m = slope  

b = y-intercept  

y = output  

x = input

y = mx + b

y2 - y1 / x2 - x1

8 0
3 years ago
How many positive integers between 1000 and 9999 inclusive
bekas [8.4K]

Answer:

Step-by-step explanation:

a.

first number is  1000-1+9=1008

9)1000(1

    9

-------

     10

       9

    -----

       10

         9

       ----

         1

       ----

last number is 9999

9| 9999

  ---------

    1111 |0

    --------

9999=1008+(n-1)9

9999-1008=(n-1)9

n-1=8991/9=999

n=999+1=1000

b.

first digit=1000

last digit=9999-1=9998

2 |9999

  ---------

  |4999|1

9998=1000+(n-1)2

(n-1)2=9998-1000=8998

n-1=4499

n=4499=1=5000

c.not sure

d.

total  numbers=9000

9999=1000+(n-1)1

9999-1000=n-1

n=8999+1=9000

numbers divisible by 3=3000

first number=1002

last number=9999

9999=1002+(n-1)3

(n-1)3=9999-1002=8997

n-1=2999

n=2999+1=3000

numbers not divisible by 3=9000-3000=6000

e.

numbers divisible by 5=1800

first number=1000

last number=9995

9995=1000+(n-1)5

(n-1)5=9995-1000=8995

n-1=1799

n=1799+1=1800

numbers divisible by 7=1286

7 | 1000

  ---------

  |  142-6

1000-6+7=1001

7 | 9999

  |---------

    1428-3

9999-3=9996

first digit=1001

last digit=9996

9996=1001+(n-1)7

(n-1)7=9996-1001=8995

n-1=1285

n=1285+1=1286

numbers divisible by 35=257

first digit=1015

35 ) 1000 ( 28

        70

       ----

        300

        280

        ------

           20

           ---

1000-20+35=1015

35)9999(285

     70

    ----

     299

     280

     -----

        199

        175

        ----

          24

         ----

last digit=9999-24=9975

9975=1015+(n-1)35

(n-1)35=9975-1015=8960

n-1=8960/35=256

n=257

reqd. numbers=1800+1286-257=3019

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Answer:

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Step-by-step explanation:

8 0
2 years ago
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Please help me I’m stuck.
Svetlanka [38]

Answer:

Step-by-step explanation:

We will use the general area formula for finding the area of triangle when you are given information for SAS, which we have been.

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a = 17, b = 15 and C = 35 degrees.  Filling in:

A=\frac{1}{2}(17)(15)sin35

Do that on your calculator in degree mode and you'll find the area to be

73.1 meters squared

6 0
3 years ago
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