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horsena [70]
3 years ago
14

Question 17 The numbers in the circles go together in a certain way. Find the missing number marked by the question mark: 180, 1

4 120, 8 A:70 B: 80 C:60 D: Mr Sockman ?, 4 D:40
Mathematics
1 answer:
Mkey [24]3 years ago
5 0

Answer:

B. 80

Step-by-step explanation:

According To Question, We Have

(180,14) (120,8) (? , 4) (220,18)

  • it Clearly Visible That ( 180*a+b=14 ) only Possible when we Put a=1/10 & b=-4. Thus, (180*1/10)-4 ⇔ 18-4 = 14
  • Same For All (120*a+b=8)

        Thus, (120*1/10)-4 ⇔ 120-4 = 8

Now (?*1/10)-4=4 solve it .

Thus, ?*1/10=8⇔?=80 is Our Missing Number .

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Find the average speed of car if it travels 18km in 20 minutes.​
Lena [83]

Answer:

\boxed{\sf Average \ Speed = 54\ km/hr}

Step-by-step explanation:

<u><em>Given: </em></u>

Distance = S = 18 km

Time = t = 20 min = 20/60 = 0.33 hours

<u><em>Required:</em></u>

Average Speed = <v> = ?

<em><u>Formula:</u></em>

Average Speed = Total Distance Covered / Total Time Taken

<u><em>Solution:</em></u>

A . S = 18 / 0.33

A.S = 54 km/hr

3 0
3 years ago
Read 2 more answers
a rino can run at speeds about 28 miles per hour. what is that speed in feet per secsec, to the nearest whole number? (Remember
Solnce55 [7]

Remark

You can use  a method called unit analysis to solve this problem. You will use it many times in your education later on.

Solve

\dfrac{28 mile}{hour} *\dfrac{5280 feet}{mile}*\dfrac{1 hour}{60 min}*\dfrac{1 min}{60 sec}

Now sort out the numbers  in the numerator and those in the denominator and multiply them together.

<em><u>Numerator</u></em> 28 * 5280 * 1 * 1 = 147840

<em><u>Denominator:</u></em> 60 * 60 = 3600

Now divide the numerator by denominator

Answer = 147840 / 3600 = 41.1 Feet / second

28 miles per hour = 41.1 feet / second

7 0
4 years ago
Use long division to find the quotient below. (2x^3+x2+25)/(2x+5)
Contact [7]

Answer:

x^2               -2x              +5

Step-by-step explanation:

               x^2               -2x              +5

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

2x + 5  /    2x^3      +     x^2       +    0x         + 25

               -(2x^3      +   5x^2)

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

                                    -4x^2       +    0x        

                                  -( -4x^2      -    10x )

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

                                                           10x           + 25

                                                         -(10x            + 25)

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

                                                                                   0

The desired quotient is x^2               -2x              +5

3 0
3 years ago
Solve the equation below x
son4ous [18]

Answer:

A

Step-by-step explanation:

Given

cx - 4 = 7 ( isolate the term in x by adding 4 to both sides )

cx = 11 ( divide both sides by c )

x = \frac{11}{c} → A

6 0
3 years ago
Carsen loves to run. She runs 4 miles each day. If she wants to run a total of 56 miles how many days should she run? Write an e
VikaD [51]

Answer:

4 miles/1 day=56 miles/X days

X=56/4=14

Step-by-step explanation:

6 0
3 years ago
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