All categories

4 years ago

To get the value of an expression you add

2 answers:

6 0

When we substitute a specific valuefor each variable, and then perform the operations, it's called evaluating theexpression. Let's evaluate theexpression 3y + 2y when 5 = y. Click on the steps to see how it's done. Perform the operations, to find the value of the expression.

NNADVOKAT [17]4 years ago

6 0

Algebra Basics - Evaluating expressions - First Glance. We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. For more go to

www.math.com/school/subject2/lessons/S2U2L3GL.html

You might be interested in

Solve for x: x^2-14x+52=7 PLEASE HAVE EXPLANATION AND I WILL MARK BRAINLIEST

ale4655 [162]

Answer:

$x_1=9\\x_2=5$

Step-by-step explanation:

To solve this problem, you must:

- Subtract 7 from both sides of the equation:

$x^{2}-14x+52-7=7-7\\x^{2}-14x+45=0$

- Now, you can factor it. Choose two numbers whose sum -14 and whose product is 45. These numbers would be -9 and -5. Therefore, you obtain the following solution:

$(x-9)(x-5)=0\\\\x_1=9\\x_2=5$

4 0

3 years ago

Read 2 more answers

Two triangular prisms are similar. The perimeter of each face of one prism is double the perimeter of the

shepuryov [24]

The area of a shape is the amount of space it can occupy.

The surface area of the larger prism is 4 times the surface area of the smaller prism.

Let the dimension of one side of the smaller prism be: l and w

Let the dimension of one side of the bigger prism be: L and W

So, we have:

$L = 2l$

$W =2w$

The area of these corresponding sides are:

$A_1 =l \times w$ ---- the first

$A_1 = lw$

While, the area of the second is:

$A_2 =2l\times 2w\\$

$A_2 =4lw$

The ratio of these two sides are:

$Ratio = A_1 : A_4$

This gives

$Ratio = lw : 4lw$

Cancel out common terms

$Ratio = 1 : 4$

Express as fractions

$Ratio = \frac 14$

Also, we have:

$Ratio = \frac{Small}{Large}$

This gives

$\frac{Small}{Large} = \frac 14$

Cross multiply

$Large = 4 \tiimes Small$

$Large = 4\4Small$

Hence, option (c) is true

Read more about areas at:

brainly.com/question/6465134

4 0

2 years ago

-5f-2+8-3k use f=7 and k=8

yaroslaw [1]

You have to plug in 7 for f and 8 for k making it look like -5(7)-2+8-3(8), now multiply to get the further more, -35-2+8-24, now add or subtract to get -53

Hope this helps

3 0

3 years ago

Read 2 more answers

Is the answer 1.1 reasonable for 4.4-0.33

Vikentia [17]

No, the answer is 4.07

6 0

3 years ago

Tamiku [17]

Answer:

30%. Based on the given conditions, formulate: 12/40 Cross out the common factor: 3/10 Multiply a number.

Step-by-step explanation:

5 0

3 years ago