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4 years ago

Which of the following statements are false?

Mathematics

2 answers:

VikaD [51]4 years ago

7 0

well, a and d are true, and b is somewhat false...

angles that are both less than 90 degrees and higher than 0 have to add up to equal 90, not just be less than 90

c, is the same thing. Straight angles are 180 degrees, but supplementary means two angles add up to equal 180 degrees, not just one

so b and c may be true, im not sure

i know that a and d are true, therefore they are not the right answer

Trava [24]4 years ago

5 0

Answer:

a. vertical angles are congruent - True.

Vertical angles are the angles opposite each other when two lines cross.

b. angles with measures between 0 degrees and 90 degrees are complementary - True.

Complementary angles are two angles whose measures sum to 90 degrees.

c. straight angles are supplementary . False.

Rather supplementary angles add up to 180 degrees and together they make a straight angle.

d. angles with measures between 90 degrees and 180 degrees are obtuse. True.

An obtuse angle is an angle of greater than 90° and less than 180°.

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a photo album contains small and large photographs. Each large photograph has side lengths that are twice the side lengths of ea

zysi [14]

Take the area of the small photograph and divide it by four, assuming it's a square, each side would then be 6 inches. The large photograph has double the side length of the small one, so 6 multiplied by 2 is 12. To find the area of the large (square) photograph, multiply 12 by 12 as two of the sides, and the area of the large photo is 144 square inches

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3 years ago

Read 2 more answers

The Sweet Shoppe wishes to sell a special mix for Valentine’s Day that consists of Dark Chocolate that costs $4.00 per lb and Mi

Mashutka [201]

Answer: Quantity of Dark Chocolate used = 15 lb

Quantity of Milk Chocolate used = 35 lb

Step-by-step explanation:

Let x = Quantity of Dark Chocolate.

y = Quantity of Milk Chocolate.

As per given , we have the following system of equations:

$x+y= 50-------------(1)\\\\ 4x+2y=50\times2.60\\\\ 4x+2y=130-----------(2)$

Multiply equation (1) by 2 , we get

$2x+2y= 100-------(3)$

Eliminate equation (3) from equation (2) , we get

$2x=30\\\Rightarrow\ x=15$

Put x= 15 in (1) , we get $15+y=50$

⇒ y=35

Therefore , Quantity of Dark Chocolate used = 15 lb

Quantity of Milk Chocolate used = 35 lb

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4 years ago

Medians $\overline{dp}$ and $\overline{eq}$ of $\triangle def$ are perpendicular. if $dp= 18$ and $eq = 24$, then what is ${de}$

monitta

Denote by M the point of intersection of the medians.
Denote also the distance DM by x and the distance QM by y.
From the median properties of triangles we know that
$y=\frac{1}{3}\timesFQ=\frac{1}{3}\times24=8$
Also,
$x=\frac{2}{3}\times DP=\frac{2}{3}\times 18=12$
Since the medians are perpendicular, we deduce that:
$x^2+y^2=DQ^2\iff DQ=\sqrt{8^2+12^2}=14.4$
Then, since $DE=2\times DQ\text{ then }DE=2\times 14.4=28.8$