All categories

3 years ago

HELP

Mathematics

2 answers:

yaroslaw [1]3 years ago

5 0

8x + 1 = 1; Step 2: 8x = 0

8x − 9 = 1; Step 2: 8x = 10

15x − 20 = 1; Step 2: 15x = 21

15x − 4 = 1; Step 2: 15x = 5

C, Sorry i'm kinda late...

ozzi3 years ago

3 0

9514 1404 393

Answer:

Step-by-step explanation:

The first step is to eliminate the parentheses, using the distributive property.

5(3x − 4) = 1

15x -20 = 1

The second step is to add 20 to both sides of the equation.

15x = 21

This pair of steps is shown in the 3rd choice.

_____

<em>Comment on the answers</em>

The distributive property seems to be applied incorrectly a lot of the time. Here, you can choose the correct answer by looking at the result of properly applying the distributive property: 5(3x-4) = 15x-20. Only the correct choice has this as the first step.

You might be interested in

I put D but I am not sure if that is the valid answer. Any help?

Evgen [1.6K]

<h3>Answer: B) ASA</h3>

Explanation:

AB || DC means we know that angle ABD = angle CDB. They are alternate interior angles. This is shown as the red angle markers in the diagram below.

Similarly, AD || BC leads to angle DBC = angle BDA. They are also alternate interior angles and they are marked in green in the diagram below.

So far we have two pairs of congruent angles.

The pair of congruent sides is BD = BD by the reflexive property. Any segment is congruent to itself.

So we can use ASA to prove the triangles congruent. Note the segment BD is between the angles mentioned.

6 0

3 years ago

90 equals 20 70s the distributive property of the gcf and 20 in 72 right and other related expression for 90 could you write ano

____ [38]

I still dont get the question please explain it better

4 0

4 years ago

The fish tank has side lengths 20in, 10in and height 15in. The water level is two inches below the top of the tank. A glass sphe

Kitty [74]

Answer:

Part 1) The new distance from the water to the top of the tank is $1.979\ in$

Part 2) The maximum number of balls that can be put into the tank with the tank not overflowing is 95

Step-by-step explanation:

step 1

Find the total volume of the tank

$V=20*10*15=3,000\ in^{3}$

step 2

Find the volume of the tank if the water level is two inches below the top of the tank

$V=20*10*(15-2)=2,600\ in^{3}$

step 3

Find the volume of the glass sphere

The volume of the glass sphere is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$r=1\ in$

assume

$\pi=3.14$

substitute

$V=\frac{4}{3}(3.14)(1)^{3}$

$V=4.2\ in^{3}$

step 4

What is the new distance from the water to the top of the tank?

we know that

$2 in -----> represent (3,000-2,600)=400\ in^{3}$

using proportion

Find how many inches correspond a volume of $4.2\ in^{3}$

$\frac{2}{400}\frac{in}{in^{3}}=\frac{x}{4.2}\frac{in}{in^{3}}\\ \\x=4.2*2/400\\ \\x=0.021\ in$

The new distance from the water to the top of the tank is

$2-0.021=1.979\ in$

step 5

Find how many of these balls can be put into the tank with the tank not overflowing

we know that

The volume of one ball is equal to $4.2\ in^{3}$

using proportion

$\frac{1}{4.2}=\frac{x}{400}\\ \\x=400/4.2\\ \\x=95.23\ balls$

therefore

The maximum number of balls that can be put into the tank with the tank not overflowing is 95

4 0

3 years ago

On a bike trip across the united states, Rodney notes that he covers about 190 miles every 4 days. If he continues at rate , use

kow [346]

190 ÷ 4 = 47.5 47.5 × 6 = 285 he could bike 285 in 6 days

5 0

3 years ago

What's the answer to -6<21

Sphinxa [80]

Answer:

Step-by-step explanation:

There's no answer here. Because -6<21.

5 0

4 years ago