All categories

3 years ago

Can anyone help plz??

Mathematics

1 answer:

Assoli18 [71]3 years ago

4 0

Answer:

5x+2=11x-70

2+70=11x-5x

72=6x

x=72/6

x=12°

You might be interested in

What linear function rule describes the graph?

S_A_V [24]

Straight line equation has a general form of $y=mx+c$
Where m is the slope $m= \frac{ y_{2}- y_{1} }{x_{2}- x_{1}}$
and c is the y intercepted part.
So now, you need to find the value of the slope (m) and the y intercept (c).
As you can notice the line intercepts with y axis in (0,1) So c=1.
And then you want to find 2 points along that line to found the slope from, we found on already (0,1) and the other one can be any point along the line, let's take (2,3).
Then use them to find the slope.
$slope(m)= \frac{ y_{2}- y_{1} }{x_{2}- x_{1}} = \frac{3-1}{2- 0}} = \frac{2}{2} =1$
So now m=1 and c=1.
The equation of this line is y=x+1

Hope this helps!

5 0

3 years ago

The mathematics faculty at a college consists of 4 professors, 10 associate professors,8 assistant professors, and 10 instruc

Mariana [72]

44 *rounded real answer is 7/16

4 0

4 years ago

Solve the equation with rational exponents. (x minus 1 )Superscript 2 divided by 3 Baseline equals 64

Katarina [22]

Answer:

$x=513 \Rightarrow S=\{513\}$

Step-by-step explanation:

1) Rewriting for the sake of clarity:

$(x-1)^{\frac{2}{3}}=64$

2) To solve it, we need to turn the rational exponent equal to 1 via exponent rule of product. Multiplying 2/3 by its reciprocal 3/2 we get 1, since this is an equality we need to do it on the other side.

$(x-1)^{\frac{2}{3}}=64\\\\((x-1)^{\frac{2}{3}}]^{\frac{3}{2}}=(64)^{\frac{3}{2}}\\(x-1)=\sqrt{64^{3}}\\x-1+1=512+1\\x=513$

4 0

3 years ago

A convention center is in the shape of a rectangular pyramid with a height of 261 m. Its base measures 468 m by 395 m.

a_sh-v [17]

Answer:

I assumed you were finding the volume sense you never specified so the volume is 1.61 ×10^7

Step-by-step explanation:

(l×w×h)/3 = (468×395×261)/3 = 1.61 ×10^7

5 0

2 years ago

A dietitian wants to know the average time spent on breakfast in a primary school. The dietitian randomly samples 25 students an

blsea [12.9K]

Answer:

The right options are:

a. The margin of error is 0.632

f. There is a 95% chance that the true mean is between 11.968 and 13.232 minutes.

Step-by-step explanation:

The question is incomplete:

Select one or more:

a. The margin of error is 0.632

b. The margin of error is 1264.

C. The margin of error is 0.600.

d. We believe that the true mean time spent on breakfast is between 11.968 and 13.232 minutes.

e. If we take many other samples from this population, 95% of them will have a sample mean that is between 11968 and 13232.

f. There is a 95% chance that the true mean is between 11.968 and 13.232 minutes.

The margin of error can be calculated from the bounds of the confidence interval as:

$E=\dfrac{UL-LL}{2}=\dfrac{13.232-11.968}{2}=\dfrac{1.264}{2}=0.632$

As the confidence interval is calculated at 95% confidence, we are 95% confident that the true mean is within the calculated interval. We are not 100% confident although (that's why Option d is false).

This interval does not give us information about the sampling distribution (option e is false).

8 0

3 years ago