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Murljashka [212]
3 years ago
10

To get the value of an expression you add

Mathematics
2 answers:
frez [133]3 years ago
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]3 years ago
6 0
<span>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 <span>expression.  For more go to

</span></span>www.math.com/school/subject2/lessons/S2U2L3GL.html
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If angle ABD is 90 degrees. Select all of the angles that measure 42 degrees.
m_a_m_a [10]

Answer:

Measure of angle 2 and angle 4 is 42°.

Step-by-step explanation:

From the figure attached,

m∠ABC = 42°

m(∠ABD) = 90°

m(∠ABD) = m(∠ABC) + m(∠DBC)

90° = 43° + m(∠DBC)

m(∠DBC) = 90 - 43 = 47°

Since ∠ABC ≅ ∠4 [Vertical angles]

m∠ABC = m∠4 = 42°

Since, m∠3 + m∠4 = 90° [Complimentary angles]

m∠3 + 42° = 90°

m∠3 = 90° - 42°

        = 48°

Since, ∠5 ≅ ∠3 [Vertical angles]

m∠5 = m∠3 = 48°

m∠3 + m∠2 = 90° [given that m∠2 + m∠3 = 90°]

m∠2 + 48° = 90°

m∠2 = 90 - 48 = 42°

m∠3+ m∠4 = 90° [Since, ∠3 and ∠4 are the complimentary angles]

48° + m∠4 = 90°

m∠4 = 90 - 48 = 42°

Therefore, ∠2 and ∠4 measure 42°.

5 0
3 years ago
A mountain climber starts in a cave, then climbs up the mountain. After 1 hour, he is 6 m under ground. After 4 hours, he is 6 m
Nookie1986 [14]

Answer:

In Point Slope Form: y+6=4(x-1)

Step-by-step explanation:

<u>First you have to find the points given which are:</u>

  • (1, -6) and (4, 6)

<u>Label the points x1, y1, x2, and y2</u>

  • It already gives you the slope which is 4.

<u>Plot the points in the equation of Point Slope Form:</u>

<em><u>y1-y2=m(x-x1)</u></em>

  • y1-6=4(x-1)

<u>Simplify: y1-6=4x-4</u>

  • y=4x+2

<u>It doesn't ask you to simplify but why not!  </u>

3 0
4 years ago
The midpoint of (2,7) and (6,3)
White raven [17]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
4. I NEED HELP ASAP!! PLEASE PUT AND ANSWER AND STEP BY STEP EQUATION!! IF YOU DON'T KNOW THE ANSWER DON'T PUT ANYTHING!!
tino4ka555 [31]

Answer:

The answer is A (y = 2x - 2)

Step-by-step explanation:

B and D aren't correct because the y-intercept is a positive 2 instead of negative 2 like the graph shown. We're now left with A and C. Go on one point of the graph and count up or down to go on the same y value as the other point. Go left or right and count until you go to the same point. Remember that the slope equation is rise/run. Rise meaning up or down. Run meaning left or right.

5 0
3 years ago
Read 2 more answers
Rounded 7,499,846 rounded to the nearest 10,000
Genrish500 [490]

Answer:

7,410,000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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