Please help I only have 10 minutes!

Mathematics

1 answer:

Triss [41]3 years ago

3 0

The answer is 39% though the actual answer was 38.67. I guess it's supposed to be approximated???
Anyways, here is my working:
First, add all the amounts of families with an annual income of over $60,000:
63+70+32+16= 181 (total)
Then, take the amount of families who might or might not purchase a newspaper subscription which is 70, and total it on the total which is 181 over 100 to find the %:
70/181×100 = 38.67 (approximated to 39%)
Hope this helps!!!!!

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Lauren spent 3/5 of her money on a refrigerator. The refrigerator cost $756. How much money did she have left?

Lelechka [254]

Fractions are the part/whole. We can set this up to be...

3/5 = 756
756 x5/3 = 1260.

if she had 1260 to begin with and spent 756, she would have 504.00 left.

3 0

3 years ago

1.Parallelogram ACFD is split in two parts so that ABED and FEBC are congruent isosceles trapezoids. What are the measures of al

DiKsa [7]

Refer to the diagram shown below.

Because ACFD is a parallelogram, its opposite angles are equal. Therefore
x = m∠ACF = m∠BCF = 48°
Similarly,
y = m∠CAD = m∠CFD

The sum of the angles inside a parallelogram is 360°. Therefore
48° + x + y + y = 360°
Because x = 48°,
48° + 48° + 2y = 360°
2y = 360° - 96° = 264°
y = 132°

Because ABED and FEBC are congruent, therefore
y = m∠DAB = m∠CFE = 132°
x = m∠ADE = m∠FCB = 48°

Because FEBC is a parallelogram, the opposite angles are equal. Therefore
m∠CBE = m∠CFE = y = 132°
m∠BCF = m∠BEF = x = 48°

Answer:
The measures of all angles of trapezoid FEBC are
m∠BCF = 48°
m∠BEF = 48°
m∠CBE = 132°
m∠CFE = 132°