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3 years ago

Below is a two-column proof incorrectly proving that the three angles of ΔPQR add up to 180°:

Mathematics

1 answer:

Wittaler [7]3 years ago

9 0

THAT THE TRIANGLE ACCORDING TO QUESTION AND I THINK SO OPTION A IS RIGHT 95%

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Determine if the described set is a subspace. Assume a, b, and c are real numbers. The subset of R3 consisting of vectors of the

AveGali [126]

Answer:

Not a subspace

Step-by-step explanation:

(4,0,0) and (0,4,0) are vectors in R3 with zero or one entries being nonzero, but their sum, (4,4,0) has two nonzero entries.

7 0

3 years ago

Point B has coordinates (2,1). The x-coordinate of point A is negative 1. The distance between point A and point B is 5 unit

Gwar [14]

Answer:

A = (-1,5) or (-1,-3)

Step-by-step explanation:

A = (-1,y) B = (2,1)

(Distance from A to B) = √[(-1-2)² + (y-1)²] = 5

=√[9 + y² - 2y + 1] = 5

Squaring on both sides

= y² - 2y + 10 = 25

=y² - 2y -15 = 0

= (y-5)(y+3) = 0

y = 5 or -3

Therefore, A = (-1,5) or (-1,-3)

6 0

3 years ago

Read 2 more answers

1) What is the height of the parallelogram? *<br> 7 cm/<br> 5 cm<br> 15 cm

Natali5045456 [20]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

X-3y=2 what is the slope

Brums [2.3K]

1/3 is the slope.
x-3y=2
-3y=-x+2
y=(1/3)x+2/3

3 0

3 years ago

Mr. Autry bought a hat for $99.90. He also bought a pair of boots for $89.90. What was the total cost of the hat and boots inclu

Pepsi [2]

Answer:

$204.98

Step-by-step explanation:

Step 1: Add both item cost

$99.90 + 89.90 = 189.80$

Step 2: Find the sales tax of the result

$\frac{8}{100}\times 189.8 = 15.184$

Step 1: Convert 8% to fraction
$8\%= \frac{8}{100}$
Simplify
$\frac{8}{100} = \frac{2}{25}$
Step 2: Convert 189.80 to a fraction
$189.80 = \frac{189.8}{1}$
Step 3: Set it up
$\frac{2}{25}\times \frac{189.8}{1}$
Step 4: Cross divide
$189.80 \div 25 = 7.592\\2 \div 1 = 2$
Step 5: Multiply the result
$7.592 \times 2 = 15.184$

Step 3: Add the result from the total cost of both items

$189.80 + 15.184 = 204.98$

The total cost of the hats and boots including sales tax is 204.98 dollars

7 0

3 years ago