All categories

3 years ago

7+2x/3=5 please give me an answer as soon as you can

Mathematics

1 answer:

Lena [83]3 years ago

5 0

Answer:

x = -3

Step-by-step explanation:

7 + 2x/3 = 5

3 . 7 + 2x

-------------- = 5

21 + 2x

----------- = 5

You might be interested in

I NEED HELP ASAP PLS :(

Vitek1552 [10]

Answer:

Step-by-step explanation:

8 0

3 years ago

3 pens cost $2.70. What is the cost per pen?

marissa [1.9K]

2, 70$ : 3 = 0, 9o $The total cost for each pen
_____________

3 0

4 years ago

Determine if the statement is always, sometimes, or never true. A square is a rhombus.

Rasek [7]

a Rhombus is has four equal sides but NO right angles, therefore, NO

4 0

3 years ago

Suppose a certain study reported that 27.7% of high school students smoke.

Norma-Jean [14]

<u>Given</u>:

Probability of student smoke,

P = 27.7%

= 0.277

Number of students,

n = 632

$q = 1-p$

$=1-0.277$

$=0.723$

(i)

Here,

Number of students (n) = 60

then,

⇒ $n_P=60\times 0.277$

$=16.62$

⇒ $n_q=60\times 0.723$

$=43.38$

We can see that $n_P > 10$ and $n_q>10$ so the normal approximation condition are met.

Now,

$\mu = n_P= 16.62$

$\sigma = \sqrt{n_{Pq}}$

$= \sqrt{60\times 0.277\times 0.723}$

$=3.9664$

Now,

⇒ $P(X$

$=P(Z_{18.5})$

The Z-score is:

= $\frac{18.5-16.62}{3.4664}$

= $0.5423$

hence,

The probability will be:

⇒ $P(Z_{18.5}) = 0.7062$

or,

⇒ $P(Z$

(ii)

Here,

Number of students (n) = 75

$\mu = n_P = 75\times 0.277$

$=20.775$

$\sigma = \sqrt{n_{Pq}}$

$=\sqrt{75\times 0.277\times 0.723}$

$=3.8756$

Now,

⇒ $P(X>17) = P(X> 17.5)$

$=1-P(X \leq 17.5)$

$=1-P(Z_{17.5})$

The Z-score is:

= $\frac{17.5-20.775}{3.8756}$

= $-0.9740$

then, $P(Z_{17.5}) = 0.165$

hence,

The probability will be:

⇒ $P(X>17) = 1-0.165$

$=0.835$

Learn more about probability here:

brainly.com/question/9825651

4 0

3 years ago

Determine the correct equation of the following graph.

Vladimir [108]

The equation of the given sine graph is gotten as; y = 4 sin [(0.4(x + 2.5)] - 1

<h3>How to find the equation of a sine graph?</h3>

We know that the general formula for equation of a sine graph is;

y = A sin [(B(x - D)] + C

where;

A is Amplitude

Period = 2π/B.

Phase Shift = -C/B.

Vertical Shift = D.

From the graph;

A = 4

B = 2π/5π = 2/5

C = -1

D = -5/2

Thus;

y = 4 sin [(0.4(x + 2.5)] - 1

Read more about sine graph at; brainly.com/question/16262155

#SPJ1

5 0

2 years ago