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Nikolay [14]
2 years ago
15

Solve the equation: 3(x - 5) = x + 21 ( please help me )

Mathematics
1 answer:
Alex787 [66]2 years ago
5 0

Answer:x=18

Step-by-step explanation:

3(x-5)=x+21

Distribute the 3

3x-15=x+21

Add 15 to each side

3x=x+36

Subtract x from each side

2x=36

Divide each side by 2

x=18

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Round to the place value of the underlined digit 862,840 underlined 6
omeli [17]

Answer:

900,000

Step-by-step explanation:

there you go bud

4 0
3 years ago
Stanley has a collection of seashells. He found 35% of his collection on Florida beaches. If Stanley has 49 seashells from Flori
m_a_m_a [10]

Answer:

The number of seashells he have in his collection all together is <u>140</u>.

Step-by-step explanation:

Given:

Stanley has a collection of seashells. He found 35% of his collection on Florida beaches.

Stanley has 49 seashells from Florida.

Now, to find the number of seashells of his collection altogether.

Let the number of seashells all together be x.

Percentage of seashells found on Florida beaches = 35%.

Number of seashells found on Florida beaches = 49.

Now, to get the number of seashells altogether we put an equation:

35\%\ of\ x=49.

⇒ \frac{35}{100} \times x=49

⇒ 0.35\times x=49

⇒ 0.35x=49

Dividing both sides by 0.35 we get:

⇒ x=140.

Therefore, the number of seashells he have in his collection all together is 140.

4 0
2 years ago
Graph the relation in the table. Then use the vertical-line test. Is the relation a function? Type your answer in the blank to t
zepelin [54]
The answer is C hope this helped u out
7 0
3 years ago
Written as a simplified polynomial in standard form, what is the result when (3x+7)^2 is subtracted from 3?
nadezda [96]

Given:

(3x+7)^2 is subtracted from 3.

To find:

The result of the given statement in the standard form of the polynomial.

Solution:

We need to find the result when (3x+7)^2 is subtracted from 3.

So, the resulted polynomial can be written as:

P(x)=3-(3x+7)^2

On simplification, we get

P(x)=3-((3x)^2+2(3x)(7)+(7)^2)               [\because (a+b)^2=a^2+2ab+b^2]

P(x)=3-(9x^2+42x+49)

P(x)=3-9x^2-42x-49

P(x)=-9x^2-42x-46

Therefore, the resulted polynomial in standard form is -9x^2-42x-46.

7 0
2 years ago
How much water did all the students drink on Wednesday? Explain how you figured it out. Make sure to use complete sentences and
Nady [450]

Answer:

6.58 I could be wrong but that's pretty much it is it all students together in total?

Step-by-step explanation:

just add 1.94+0.97+1.8+1.87=6.58

7 0
3 years ago
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