3 years ago

Given: -5x+2/7=-4 Prove: x=6

Mathematics

1 answer:

lara [203]3 years ago

7 0

Step-by-step explanation:

$-5x+\frac{2}{7} =-4$

$or,-5x+2=-28\\$

$or,-5x=-30$

$or,x=6$

You might be interested in

2(3x+1)≤20 and 4(x−1)<2.

JulsSmile [24]

Answer:

this Answer is

Step-by-step explanation:

2(3x+1) ≤ 20

6x+1≤20

6x≤19

x≤19/6

4(x−1)<2

4x-1<2

4x< 3

x< 3/ 4

8 0

2 years ago

A bag contains blue marbles and red marbles, 107 in total. The number of blue marbles is 7 more than 4 times the number of red m

Alecsey [184]

Answer: blue= 93.625

Step-by-step explanation:

Let the red ball be y

Four times of red is 4y

And blue is seven times of red which means 7(4y)

4y+7(4y)=107

Open the bracket

4y+28y=107

32y=107

y=107/32

Make y the subject of formula

y=3.34

Therefore,blue is

7(4(3.34))

Blue= 93.625

6 0

3 years ago

A school aditorium has 200 seats and 156 of them are occupide.What percentage of the seats are occupide

marusya05 [52]

78% of the seats are occupied.

5 0

3 years ago

Read 2 more answers

3,094 write the decimal in words

Diano4ka-milaya [45]

Answer:

three thousand and ninty-four

Step-by-step explanation:

I think thats the right answer :)

5 0

3 years ago

Compute Δy and dy for the given values of x and dx = Δx. (Round your answers to three decimal places.) y = ex, x = 0, Δx = 0.4

kobusy [5.1K]

Answer:

0.492

Step-by-step explanation:

According to the given situation, the calculation of Δy and dy is shown below:-

$y = e^x, x = o, \Delta x = 0.6$

$dy = f'(x) = e^x$

$dy = e^x dx$

$= e^x (0.4)$

$dy = 0.4e^x$

$\Delta y = f(0.4) - f(0)$

$= e^{0.4} - e^0$

Now we use the scientific calculator or spreadsheet to determine the exponential value

= 1.491824698 - 1

= 0.491824698

= 0.492

Therefore for computing the Δy and dy we simply applied the above formula.

Hence, the answer is 0.4918

5 0

3 years ago