All categories

3 years ago

Marcel made an error when he used the distributive property to write an equivalent

Mathematics

1 answer:

natima [27]3 years ago

5 0

Answer: Upper left corner

Explanation:

The error happens in step 2. Notice that x is not part of the second term 16, so there's no way to factor x from it unless you want a fraction to result.

The second step should be 8(4x-2)

Another way to factor is to say 16(2x-1)

You might be interested in

the volume of a cylinder is 1,692.46 in cubed. if the radius becomes three times as large, what will be the cylinder's volume?

ivanzaharov [21]

We know that
original volume of a cylinder=pi*r²*h
volume=1692.46 in³
1692.46=pi*r²*h

if the radius becomes three times as large
so
r=3*r
new volume=pi*(3*r)²*h----> 9*pi*r²*h
new volume=9*original volume
new volume=9*1692.46----> 15232.14 in³

the answer is
the new volume is 15232.14 in³

6 0

3 years ago

Help me please! Correct answer get's brainliest :D

asambeis [7]

answer:

step by step explanation:

make all numbers the same decimal,fraction or percentage and then compare

3/8=37.5%

-2.8=20.8%

0.053=5.3%

-2.8%

ascending means from smallest to biggest so the answer would be 0.053

5 0

3 years ago

A family has a cell phone plan that costs $75 per month including taxes and fees. The plan lets the 5 members of the family shar

Alexeev081 [22]

(1×50)+(2×15)because they used 50 and 15 more

5 0

4 years ago

The average summer temperature in Anchorage is 69°F. If the daily temperature is normally distributed with a standard deviation

Savatey [412]

Answer:

81.85%

Step-by-step explanation:

Given :

The average summer temperature in Anchorage is 69°F.

The daily temperature is normally distributed with a standard deviation of 7°F .

To Find:What percentage of the time would the temperature be between 55°F and 76°F?

Solution:

Mean = $\mu = 69$

Standard deviation = $\sigma = 7$

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

Now At x = 55

$z=\frac{55-69}{7}$

$z=-2$

At x = 76

$z=\frac{76-69}{7}$

$z=1$

Now to find P(55<z<76)

P(2<z<-1)=P(z<2)-P(z>-1)

Using z table :

P(2<z<-1)=P(z<2)-P(z>-1)=0.9772-0.1587=0.8185

Now percentage of the time would the temperature be between 55°F and 76°F = $0.8185 \times 100 = 81.85\%$

Hence If the daily temperature is normally distributed with a standard deviation of 7°F, 81.85% of the time would the temperature be between 55°F and 76°F.

8 0

4 years ago

Plzzzzzzzzzz helpppppppppppp i really need helppppppppppppp!

Igoryamba

Add up all the like terms and equal it to 720. Solve, the answer you get is x. Next subtract (x-20) and that's the answer.

4 0

3 years ago