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serious [3.7K]
3 years ago
6

Calculate the area of this figure

Mathematics
2 answers:
const2013 [10]3 years ago
3 0
THE AREA IS 78
Cause 13 x 12 is 156 and 156 divid by 2 is 78
fiasKO [112]3 years ago
3 0

Answer:

78.

Step-by-step explanation:

13/2=6.5

6.5X12=78.

78/2=39

39X2=39. You times it by 2 because there are two equivalent sides.

You might be interested in
Find the equation of the line that goes through (-8,11) and is perpendicular to x= - 15. Write the equation in the form x = a, y
galben [10]

Answer:

y=11

Step-by-step explanation:

Hi there!

We want to find the equation of the line that passes through the point (-8, 11) and is perpendicular to x=-15

If a line is perpendicular to another line, it means that the slopes of those lines are negative and reciprocal; in other words, the product of the slopes is equal to -1

The line x=-15 has an undefined slope, which we can represent as 1/0, which is also undefined.

To find the slope of the line perpendicular to x=-15, we can use this equation (m is the slope):

m_1*m_2=-1

m_1 in this instance would be 1/0, so we can substitute it into the equation:

\frac{1}{0} *m_2=-1

Multiply both sides by 0

m_2=0

So the slope of the new line is 0

We can substitute it into the equation y=mx+b, where m is the slope and b is the y intercept:

y=0x+b

Now we need to find b:

Since the equation passes through the point (-8,11), we can use its values to solve for b.

Substitute -8 as x and 11 as y:

11=0(-8)+b

Multiply

11=0+b, or 11=b

So substitute into the equation:

y=0x+11

We can also write the equation as y=11

Hope this helps!

5 0
3 years ago
The diagram shows triangle ABC with D on AC and E on AB. DE is a straight line. AD = 27 m, AE = 39 m, DE = 23 m and BC = 65 m. C
pychu [463]
ABC ———————————————————-
6 0
2 years ago
What is the absolute value of the expression of negative 5X +12 when X equals five
nata0808 [166]

Answer: 13

Step-by-step explanation:

x = 5

-5 (5) + 12

-25 + 12

-13

abs(-13) = 13

To find absolute value, solve the equation as is and then make the answer positive.  

5 0
3 years ago
Yolanda is twice as old as zachry was when yolanda was zachary's age. When zachry is as old as yolanda is now, the sum of their
I am Lyosha [343]

Answer:

  • Yolanda is 28
  • Zachary is 21

Step-by-step explanation:

Let y represent Yolanda's age now, and let d represent their difference in ages. Then Zachary is now y-d years old.

When Yolanda was Zachary's age (now), Zachary was (y-d) -d. Yolanda is now twice that age:

  y = 2(y -2d)

  4d = y . . . . . . eliminate parentheses, add 4d-y

__

When Zachary is as old as Yolanda is now, Yolanda will be y+d and the sum of their ages will be 63:

  y + (y+d) = 63

  2y + d = 63

Using the expression for y from above, we get ...

  2(4d) +d = 63

  d = 7 . . . . . . . . divide by 9

  y = 4d = 28 . . . . Yolanda's current age

  y-d = 21 . . . . . . . Zachary's current age

6 0
3 years ago
Please explain your answer.
VashaNatasha [74]

Answer: Step 3


Step-by-step explanation: She was going fine until she divided wrong.

12= 4f Divide both sides by 4 to isolate f

12/4 = f

3 = f

4 * 3 =12


4 0
3 years ago
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