All categories

2 years ago

A math teacher in a middle school surveyed a random sample of students about their

Mathematics

1 answer:

sukhopar [10]2 years ago

8 0

Answer: c is your answer hope this helped

plz make brainly

Step-by-step explanation:

You might be interested in

Solve for x.<br><br> (x−2)^2+2=38<br><br> x= ___ or x= ___

Elan Coil [88]

Answer:

$x \: = \: \boxed{ \bold{ - 4 }}\: \: \text{or} \: \: x \: = \: \boxed{ \bold{ 8}}$

Step-by-step explanation:

$(x \: - \: 2 {)}^{2} \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 4 \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: - \: 38 \: = \: 0$

${x}^{2} \: + \: 4x \: - \: 8x \: - \: 32 \: = \: 0$

$x \: \times \: (x \: + \: 4) \: - \: 8(x \: + \: 4) \: = \: 0$

$(x \: + \: 4) \: \times \: (x \: - \: 8) \: = \: 0$

When it happens that the product of the factors is the same as zero. It is divided into two possible cases.

$x \: + \: 4 \: = \: 0 \\ x \: - \: 8 \: = \: 0$

We solve the two equations:

$x \: = \: - 4 \\ x \: = \: 8$

<h2>Answer: </h2>

$x \: = \: - 4 \\ x \: = \: 8$

<h3><em><u>MissSpanish</u></em></h3>

6 0

1 year ago

Answer both questions please

alex41 [277]

Answer:

Sorry I can't because i don't know this : (

Step-by-step explanation:

6 0

3 years ago

A jet fighter is capable of reaching speeds up to 1.5 x 10^3 miles per hour. A typical passenger plane can reach speeds of appro

Volgvan

Answer:

3 times faster

Step-by-step explanation:

$\frac{1.5(10)^{3} }{5.0(10)^{2}} = \frac{1.5(10)}{5} = \frac{15}{5} = 3$ times faster

5 0

3 years ago

Where do the graphs Of linear equations 2x+3y=4 and 5x+6y=7 intersect

UNO [17]

5x + 6y = 7 SUBSTITUTION METHOD
2x + 2y = 4

5x + 6y = 7 Solve for either x or y in 1 of the 2 equations.
- 6y - 6y
-----------------------
5x = -6y + 7
----- ------ ----
5 5 5

x = -6/5y + 7/5

2(-6/5y + 7/5) + 2y = 4 Substitute the expression you got for x or y into
-12/5y + 14/5 + 2y = 4 the other equation.
-2/5y + 14/5 = 4
- 14/5 - 14/5
------------------------------
-2/5y = 6/5
-------- --------
- 2/5y - 2/5y

y = -3

5x + 6(-3) = 7 Plug in the value you got for y in step 2 into the
5x - 18 = 7 equation that you didn't use.
+ 18 + 18
------------------
5x = 25
--- -----
5 5

x = 5

(x,y) ⇒ coordinate
(5,-3) ⇒ final answer

4 0

3 years ago

A restraunt earns $1073 on Friday and $1108 on Saturday. Write and solve an equation to find the amount x (in dollars) the restr

Sveta_85 [38]

For this case, the average is the sum of the amounts of the three days divided by three.

We know the earn of Friday and Saturdar. We can assign x to the earn of saturday.

$Promedio= \frac{1073USD + 1108USD + xUSD}{3} =100 USD$

$Promedio= \frac{2181USD + xUSD}{3} =100 USD$

We need to multiply by 3 both sides of the equation.

$3(\frac{2181USD + xUSD}{3}) =3(100 USD)$

2181 USD + x USD =300 USD

We need to substrat 2181 USD in both sides.

2181 USD - 2181 USD + x USD =300 USD - 2181 USD

x USD =300 USD - 2181 USD

x USD = - 1881 USD

They need a negative earn in order to have an average earn of 100 USD per day.

1073 USD + 1108 USD - 1881 USD = 300 USD

300 USD / 3 = 100 USD $[tex]2181 USD - 2181 USD+ xUSD =3100 USD - 2181 USD$ [/tex]

4 0

3 years ago