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lara [203]
3 years ago
11

Mia is three years older than twice her sister Brooke's age. The sum of their ages is less than 30.

Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0
The answer is b.) 8
solong [7]3 years ago
7 0

the correct answer is b. 8

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Can someone help me and walk me through it? Thank you:)
olya-2409 [2.1K]
First find the area of the triangle.

\sf A=\dfrac{1}{2}bh

\sf A=\dfrac{1}{2}(6)(12)

\sf A=36cm^2

ABCE is a parallelogram, this means that the area of triangle ABE is equal to the area of triangle EBC. The are of the entire trapezoid is 180 square centimeters, we already found the area of the triangle, so that leaves us with:

\sf 180-36=144

So the area of the entire parallelogram must be 144 square centimeters. So each half of the parallelogram must be equal to:

\sf 144\div 2=\boxed{\sf 72cm^2}
8 0
3 years ago
What is the justification for step 2 in the solution process?
gulaghasi [49]

Answer: OPTION B.

Step-by-step explanation:

Given the following equation:

10x - 25 - 3x = 4x- 1

These are the steps to solve it:

<em>Step 1</em>

Add like terms on the left side of the equation:

7x -25= 4x - 1

<em>Step 2</em>

Apply Addition property of equality, which states that: If\ a=b\ then\ a+c=b+c

Then, we can add 25 to both sides of the equation:

7x -25+(25)= 4x - 1+(25)\\\\7x=4x+24

<em>Step 3</em>

Applying the Subtraction property of equality, we can subtract 4x from both sides:

7x-4x=4x+24-(4x)\\\\3x=24

<em>Step 4</em>

Applying the Division property of equality, we can both sides of the equation by 3. Then:

\frac{3x}{3}=\frac{24}{3}\\\\x=8

7 0
3 years ago
Read 2 more answers
How to calculate radius of 300m2 garden?
aliya0001 [1]

<span> Measure the radius </span>Calculate the diameter Measure the distance from the center of the circle to the circumference. This is the radius of the circle. <span> Calculate the circumference</span> Multiply the radius of the circle in question by two to get the diameter. Multiply pi by the diameter to get the circumference of the circle. For instance, if the diameter of the circle is 20 centimeters, the circumference of the same circle is the product of 20 centimeters and 3.14, which is 62.8 centimeters.

if u need more information u can watch this as well:<span>https://www.youtube.com/watch?v=vSXKLH0Gpbw

</span> i hoped i helped u out! =^-^=
3 0
3 years ago
Megan’s TV had a base price of $189 and the sales tax was 6.88%. Over the next four years, the TV consumed an average of $0.06 o
Leni [432]

Answer:

Step-by-step explanation:

price of tv and sales tax = 1.0688×$189 = $202.0032 ≅ $202.00

4 years = 3×365 days + 366 days = 1461 days

cost of electricity = 1461 days × $0.06/day = $87.66

lifetime cost = purchase price + electricity + repairs

= $202.00 + $87.66 + 2·$29

= $347.66

8 0
3 years ago
Read 2 more answers
What’s the value of the question mark?
ioda

Answer: 15/30 = 5/10      

Step-by-step explanation: 5/10 = 1/2 so then you'd have to make 15/ something double it so It would equal 1/2 hope this helps :)

6 0
3 years ago
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