All categories

3 years ago

6(2b+5)=12b×30What did Joseph do wrong and whats the correct answer

Mathematics

1 answer:

stiks02 [169]3 years ago

4 0

Answer:

he placed a * sign instead of an add sign in the second part of the equation

Step-by-step explanation:

6(2b+5)=6*2b + 6*5 = 12b + 30

You might be interested in

What is 32,651.97 written in expanded form? PLease dont lie

cricket20 [7]

Step-by-step explanation:

30000+2000+600+50+1+0.9+0.07

Concept:

<u>First write ten thousands ,then thousands then hundred,then tens then ones then thenths then hundredths.</u>

6 0

3 years ago

What is the measure of ∠S?

wolverine [178]

Answer:

30 degrees

Step-by-step explanation:

The angles must add up to 180 degrees and the triangles have the same angles.

8 0

4 years ago

Read 2 more answers

Multiple Choice The perimeter of a square

Oduvanchick [21]

Answer:

The answer is B, 5.

Step-by-step explanation:

3x+2 is per side. A square has 4 sides. 3x+2 times 4 is 12x+8 (using the distributive property).

12x+8 = 68

12x = 60

divide both sides by 12...

60/12 = 5.

Therefore x =5

5 0

3 years ago

The thickness X of aluminum sheets is distributed according to the probability density function f(x) = 450 (x2 - x) if 6 < x

grandymaker [24]

Solution :

Given :

$f(x) = \left\{\begin{matrix}\frac{1}{450}(x^2-x) & \text{if } 6 < x < 12 \\ 0 & \text{otherwise}\end{matrix}\right.$

1. Cumulative distribution function

$P(X \leq x) = \int_{- \infty}^x f(x) \ dx$

$=\int_{- \infty}^6 f(x) dx + \int_{6}^x f(x) dx$

$=0+\int_6^x \frac{1}{450}(x^2-x) \ dx$

$=\frac{1}{450} \int_6^x (x^2-x) \ dx$

$=\frac{1}{450}\left[\frac{x^3}{3}-\frac{x^2}{2}\right]_6^x$

$=\frac{1}{450}\left[ \left( \frac{x^3}{3} - \frac{x^2}{2}\left) - \left( \frac{6^3}{3} - \frac{6^2}{2} \right) \right]$

$=\frac{1}{450}\left[\frac{x^3}{3} - \frac{x^2}{2} - 54 \right]$

2. Mean $E(x) = \int_{- \infty}^{\infty} \ x \ f(x) \ dx$

$=\int_{6}^{12}x . \left( \frac{1}{450} \ (x^2-x)\right)\ dx$

$=\frac{1}{450} \int_6^{12} \ (x^3 - x^2) \ dx$

$=\frac{1}{450} \left[\frac{x^4}{4} - \frac{x^3}{3} \right]_6^{12} \ dx$

$=\frac{1}{450} \left[ \left(\frac{(12)^4}{4} - \frac{(12)^3}{3} \right) - \left(\frac{(6)^4}{4} - \frac{(6)^3}{3} \right)$

$=\frac{1}{450} [4608 - 252]$

= 17.2857

5 0

3 years ago

Triangle abc is reflected across line L to form

Maslowich

Triangle abc i guess

I don't rlly understand what you mean

8 0

4 years ago

6(2b+5)=12b×30What did Joseph do wrong and whats the correct answer​

6(2b+5)=12b×30What did Joseph do wrong and whats the correct answer