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2 years ago

What are like terms in math no looking it up thx

Mathematics

1 answer:

maksim [4K]2 years ago

5 0

Answer:

<h2>See below</h2>

Step-by-step explanation:

Terms are variables in math.

For example: 5x + 6y = is NOT like becuase x and y equal different things

4x + 2x = is like becuase x equals the same number in both

The reason we care about like terms is because we can simplify like terms.

4x + 2x simply equals 6x.

I'm always happy to help :)

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Ted pays $35 per hour for scuba class. Identify the constant of proportionality that relates his scuba class charges (y) to the

Naddik [55]

The answer would be D

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2 years ago

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Lin has a drawing with an area of 20 in squared. If she increases all sides by a scale factor of 4, what will the new area be?

diamong [38]

The new area will be 320 in²

Explanation

Lin has a drawing with an area of 20 in² and she increases all sides by a scale factor of 4.

The general rule we need to use here.......

"If the lengths of the sides in a shape are all increased by a scale factor of $k$ , then the area will be increased by a scale factor of $k^2$ "

Here the sides are increased by a scale factor of 4. So, the area will be increased by a scale factor of $(4)^2 =16$

Thus, the new area will be: $(20*16)in^2 = 320in^2$

8 0

2 years ago

What is 7a+21=56 and what is the solution

asambeis [7]

7a+21=56

Begin by subtracting 21 on both sides:
21-21=0 so the 21 in the left cancels, then 56-21=35

Your new equation will be
7a=35

Finally, divide by 7 on both sides:
7/7=1 and 35/7=5

your answer will be
a=5

7 0

2 years ago

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6th grade math help me, please :))

Gelneren [198K]

Answer:

$\sf a) \ 2.5\\b) \ 7.5$

Step-by-step explanation:

$\displaystyle \frac{250}{100}$

$\sf Express \ as \ a \ decimal.$

$=2.5$

$\sf Multiply \ 3\% \ with \ 250.$

$\displaystyle 250 \times \frac{3}{100}$

$\displaystyle \frac{750}{100}=7.5$

5 0

2 years ago

Which group of three squares will form a right triangle when joined at their vertices?

Ilia_Sergeevich [38]

Answer:

Option ?) 17 cm, 15 cm, 8 cm

The assignment should have four options to choose from, but there is only a picture of two.

Step-by-step explanation:

None of the squares shown form a right triangle. To determine if sides form a right triangle, you use this formula:

a²+b²=c²

We are given two options in the picture.

Option A) 18, 10, and 8.

Option B) 12, 9, and 6.

So, now we need to apply the formula:

Option A)

║8² + 10² = 18²

↓

║64 + 100 = 324

↓

║FALSE

Option B)

║6² + 9² = 12²

↓

║36 + 81 = 144

↓

║FALSE

Both of these options are false. But, I decided to look up this assignment to check my answer. It turns out, there are 4 options, and you only had a picture of two. So, what's the answer?

There is an answer choice that shows 3 squares with the lengths of 17 cm, 15 cm, and 8 cm. This is the correct answer.

For proof, let's apply the formula:

Option ?)

║8² + 15² = 17²

↓

║64 + 225 = 289

↓

║TRUE

[Since the option isn't shown, I'll put a '?' so there is no confusion]

8 0

2 years ago