2 years ago

7x + 12 = 6 solve for x

Mathematics

1 answer:

Dima020 [189]2 years ago

4 0

Answer:

-6/7

Step-by-step explanation:

math

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Let f(x)=x^4-3x^3+5x-3, f(-2)

BabaBlast [244]

$f(-2)=(-2)^4-3(-2)^3+5(-2)-3
\\f(-2)= 16+24-10-3\\
f(-2)=30-10-3\\
f(-2)=17$

8 0

3 years ago

jasmine took four 20 points quizzes in her math class. if her scores were,18,15,20,15, what was her mean quiz score

g100num [7]

Answer: 17

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3 years ago

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olga55 [171]

Answer:

6 7/8

Step-by-step explanation:

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3 years ago

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the number of students in the four sixth-grade classs at northside school are 26, 19,34 and 21. Use properties to find the total

Aleks04 [339]

In this case all you do is add all the numbers, answer is 100

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3 years ago

On the first part of a journey, Alan drove a distance of x km and his car used 6 litres of fuel.

irinina [24]

Answer:

$\frac{600}{x+20}\text{ litres per 100 km}$

Step-by-step explanation:

Given,

The number of litres consumed by car in (x+20) km = 6,

So, number of litres consumed by car in 1 km = $\frac{6}{x+20}$ ,

Now, number of litres consumed by car in 100 km = 100 × litres consumed by car in 1 km

$=100\times \frac{6}{x+20}$

$=\frac{600}{x+20}$

Hence, the rate of fuel used by his car would be $\frac{600}{x+20}$ litres per 100 km.

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3 years ago