Ask question

Ask question

All categories

2 years ago

14

Study the equation below 25= 2x + 3

1 answer:

photoshop1234 [79]2 years ago

3 0

Let's solve 'em all!

Original Equation:
25 = 2x + 3
-3 -3
22 = 2x
/2 /2
11 = x (So now we are looking for an equation that has the solution: 11)

A.
28 = 2x
/2 /2
14 = x

B
22 = 2x
/2 /2
11 = x

C
50 = x + 3
-3 -3
47 = x

D
25/2 = x + 3
12.5 = x + 3
-3 -3
9.5 = x

Thus, the answer is B since both 25 = 2x + 3 and 22 = 2x both are equivalent to 11.

You might be interested in

The table represents the function 7 = 5x- Output ) Input (3) -2 -18 8 x 1 2 2 12 8 2 2. What is the input when the output is 12

notsponge [240]

$y_{-2}=5\cdot(-2)-8=-10-8=-18$ $y=5x-8$ $12=5x-8$ $12+8=5x$ $20=5x$ $x=\frac{20}{5}$ $x=4$

6 0

1 year ago

A plumber's daily earnings have a mean of $145 per day with a standard deviation of $16.50.

avanturin [10]

Step-by-step explanation:

The plumber's daily earnings have a mean of $145 per day with a standard deviation of

$16.50.

We want to find the probability that the plumber earns between $135 and

$175 on a given day, if the daily earnings follow a normal distribution.

That is we want to find P(135 <X<175).

Let us convert to z-scores using

$z = \frac{x - \mu}{ \sigma}$

This means that:

$P(135 \: < \: X \: < \: 175) = P( \frac{135 - 145}{16.5} \: < \: z \: < \frac{175 - 145}{ 16.5} )$

We simplify to get:

$P(135 \: < \: X \: < \: 175) = P( - 0.61\: < \: z \: < 1.82 )$

From the standard n normal distribution table,

P(z<1.82)=0.9656

P(z<-0.61)=0.2709

To find the area between the two z-scores, we subtract to obtain:

P(-0.61<z<1.82)=0.9656-0.2709=0.6947

This means that:

$P(135 \: < \: X \: < \: 175) =0.69$

The correct choice is C.

7 0

2 years ago

The volume of a cylinder is 375 pi m^3. if r= 5 m, find its height.

pishuonlain [190]

Answer:

Step-by-step explanation:

$V=h\pi r^2\\ \\ h=\frac{V}{\pi r^2}\\ \\ h={375\pi}{25\pi}\\ \\ h=15m$

3 0

2 years ago

Solve m=10x-1x for x

saveliy_v [14]

Answer:

x = 1/9m good luck........

6 0

2 years ago

Read 2 more answers

What is 4 5/6 as a decimal ? - show work plz:(

bulgar [2K]

Turn the fraction into a improper fraction.

4 5/6 -> 29/6

Divide both numbers.

29 / 6 = 4.833...

Best of Luck!

4 0

3 years ago

Read 2 more answers