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dsp73
3 years ago
13

Write a numerical expression that satisfies all of the following conditions. • The only number used in the expression is 3. At l

east one exponent other than 1 is used. When the expression is evaluated, the answer is greater than 30 and less than 40.​
Mathematics
1 answer:
Paladinen [302]3 years ago
7 0

Answer:

To evaluate a variable expression means to find the value of the expression when the variable is (or variables are) replaced by a number (or numbers).

Here is a variable expression: 3x+7.

To evaluate this expression when x=2 mean to substitute 2 in place of x, and find the number (the value). [see note below]

3(2)+7=6+7=13.

When x=2, the expression has a value of `13.

If we evaluate the same expression when x=10, we get:

3(10)+7=30+7=37.

Here's a variable expression with two variables : 3x−2y

In order to evaluate this expression, we'll need values (numbers) for both x and y.

Evaluate the expression 3x−2y when x=4 and y=5

3(4)−2(5)=12−10=2

If we change the values to x=5 and y=4, we get

3(5)−2(4)=15−8=7.

Note:

To avoid saying exactly the same thing over and over, we use the following to mean the same thing:

evaluate the expression when x=2

evaluate the expression for x=2

evaluate the expression at x=2

evaluate the expression assuming x=2

evaluate the expression if x=2

Also

If there is only one variable in an expression, we don't always need to mention it:

evaluate the expression for 2

evaluate the expression at 2

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If two triangles are congruent which of the following statements must be true
Sati [7]

The statement which must be true are Options B, C and D

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<h3>What are congruent triangles?</h3>

Congruent triangles are triangles that have corresponding sides, angles which are all equal in measure.

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which are the triangles have the same size and shape, the corresponding sides of the triangles are congruent and the corresponding angles of the triangles are congruent.

The complete question is

If two triangles are congruent which of the following statements must be true? CHECK ALL THAT APPLY

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B. The triangles have the same size and shape

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D. The corresponding angles of the triangles are congruent.

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4 0
1 year ago
Find the principle square root of 4/25. Give your answer as a fraction in simplest form (numerator, then "/", then denominator).
stiks02 [169]

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Step-by-step explanation:

6 0
3 years ago
The diagram shows Maha's garden.
Liono4ka [1.6K]

Answer:

perimeter = 71.4 m

Step-by-step explanation:

using the Pythagorean theorem:

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perimeter = 24 + 15.3 + 13.6 + 18.5 = 71.4 m

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