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alex41 [277]
3 years ago
13

For what value of x is the figure a rectangle?

Mathematics
1 answer:
Anna [14]3 years ago
6 0

Step-by-step explanation:

step 1. 4x + 27 + 3x = 90 (definition of a rectangle)

step 2. 7x = 63 (collect like terms. subtract 27 from both sides)

step 3. x = 9 (divide both sides by 7)

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in a college biology class, only half of the class earned a passing grade. Out of all the students, 25% studied and passes. What
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Answer:

17.5%

Step-by-step explanation:

take 25% x 1/2..............

5 0
2 years ago
1. If one side of the square is 12in, what is the perimeter and area of the parallelogram?
gayaneshka [121]

Answer:

Not sure for 1. Area might be 144. Perimeter might be 50. I got perimeter by finding slant height of the parallelogram and then substituting it to the perimeter formula (P=2(a+b) where a is a side and b is a base). I found area by just multiplying 12*12 since to find area of parallelogram, it is base x height.

2. 45, 135, 135

Step-by-step explanation:

2. We know that an isosceles trapezoid has congruent base angles and congruent upper angles, so if one base angle measures 45 degrees, the other base angle will also be 45 degrees.

For the upper angles, we know that diagonal angles are supplementary, so 180- base angle 1 (45 degrees)= upper angle 1

180-45=upper angle 1

upper angle 1 = 135 degrees

Mentioned above, upper angles are congruent, so upper angles 1 and 2 will be 135 degrees.

Check: The sum of angles in a quadrilateral is equal to 360 degrees. We can use this to check if our answer is correct.

135+135=270 degrees (sum of upper angles)

45+45= 90 degrees (sum of base angles)

270+90=360

So the angle measures of the other three angles are 135, 135, and 45.

Hope this helps!

7 0
2 years ago
Adena used a qualateral in her ary design. The quadrlateral has no sides ,and only one pair of opposite sides parallel what shap
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Answer: The quadrilateral used here is a trapezium.




3 0
3 years ago
Suppose that an individual has a body fat percentage of 16.7% and weighs 188 pounds. How many pounds of his weight is made up of
Volgvan

Answer:

15.867

lbs or almost  

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Step-by-step explanation:

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3 years ago
The wholesale price for a pillow is $3.50 . A certain department store marks up the wholesale price by 60%. Find the price of th
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Answer:

5.60

Step-by-step explanation:

3.50 + 60 % (2.10)= 5.60

7 0
3 years ago
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