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trapecia [35]
3 years ago
11

The product of -12 and a number is 60​

Mathematics
2 answers:
rewona [7]3 years ago
8 0
The answer to this question is 20
Elza [17]3 years ago
7 0

<u>Given :- </u>

Product of a number and -12 is 60.

<u>To find :- </u>

The required number.

<u>Solution:-</u>

Let the number be x.

  • According to question.

→x \times -12 = 60

→-12 x = 60

  • Transform -12 on right side.

→x = \dfrac{-60}{12}

→x = -5

hence,

<u>The required number is -5.</u>

<h2><u>Verification.</u></h2>

  • Multiply -5 by -12 we get ,

-5 \times -12 = 60

60 = 60

  • L.H.S = R.H.S

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Which equation is equivalent to f(x)=16x^4-81=0
Talja [164]
I'm pretty sure you are looking for factored forms as an equivalent equation, so here is how you do it. 
This equation would be solved by difference of squares. 16, x^4, and 81 are all perfect squares ( which means that it is a number multiplied by itself, 16 is 4 x4 for example). So the first thing you want to do is recall the formula which is
(a^2 - b^2) = (a - b)*(a + b) 
(16x^4 - 81)= 0
Find the sq. root of 16 which is 4, and of x^4 which is x^2, and 81 which is 9. Now re write it in the (a - b)*(a + b) format. ----> (4x^2 - 9)*(4x^2 + 9) = 0
7 0
3 years ago
Read 2 more answers
The function D(t)=18t2−130t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take f
Assoli18 [71]

The time it will take for the car to skid for 150 feet is 8.23 seconds.

<h3>How to find the time the car will skid?</h3>

The function D(t) = 18t² − 130t gives the distance a car going a certain speed will skid in t seconds.

The time the it would take for the car to skid for 150 feet can be calculated as follows:

Therefore,

D(t) = 18t² - 130t

150 =  18t² - 130t

18t² - 130t - 150 = 0

divide by 3

9t² - 65t - 75 = 0

Hence,

t = 65 ± 5√277 / 18

t = 8.23425471586 or -1.01166666667

Hence,

t = 8.23 seconds.

Therefore, the time it will take for the car to skid for 150 feet is 8.23 seconds.

learn more on function here: brainly.com/question/13927655

#SPJ1

7 0
2 years ago
A 4​-ft vertical post casts a 20​-in shadow at the same time a nearby cell phone tower casts a 120​-ft shadow. How tall is the c
Sedaia [141]

change 20 in  to ft

20/12 = 1 2/3 ft


4 ft                               x ft

-------                     =    ---------------

5 /3 ft  shadow           120 ft


using cross products

4 * 120 = 5/3 x

480 = 5/3 x

multiply each side by 3/5

480 * 3/5 = x

288 ft

7 0
4 years ago
Can someone solve this
navik [9.2K]

Answer:

482.84 cm

Step-by-step explanation:

8 0
3 years ago
13. Higher Order Thinking Eve and Gerard
ella [17]

Answer:

Gerard's blue section is larger.

Step-by-step explanation:

Eve  divided her half into 6 equal sections and painted one section blue.

So, the blue-painted part will be of size (\frac{1}{2} \times \frac{1}{6}) = \frac{1}{12} part of the whole poster.

Again, Gerard  divided her half into 5 equal sections and painted one section blue.

So, the blue-painted part will be of size (\frac{1}{2} \times \frac{1}{5}) = \frac{1}{10} part of the whole poster.

Now, since 12 > 10, so, \frac{1}{12} < \frac{1}{10}

Therefore, Gerard's blue section is larger. (Answer)

6 0
3 years ago
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