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3 years ago

Select all that apply. a. Acuteb. Reflexc. Rightd. Obtusee. Straight

Mathematics

2 answers:

Arlecino [84]3 years ago

8 0

Answer:

it's only A because Angle ABC is equal to or is about zero so and an acute is 45 degrees or smaller

sergij07 [2.7K]3 years ago

3 0

Answer:
A. Acute

Step-by-step explanation:

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Compute the value of the discriminant and give the number of real solutions of the Quadratic equation 3x^2+9x-1=0 PLSS HELPP

FrozenT [24]

Answer:

Discriminant = 93, two real roots/solutions

Step-by-step explanation:

Discriminant = b² - 4ac = (9)² - 4(3)(-1) = 81 + 12 = 93

Since 93>0, the quadratic equation has two real roots/solutions.

3 0

3 years ago

Terri will replace the tile and carpet in her apartment. How many total square feet of tile and carpet must Terri purchase in or

lana66690 [7]

Answer:Terry need to purchase $195\ ft^{2}$ of tile and $663\ ft^{2}$ of carpet for a total area of $858\ ft^{2}$

Step-by-step explanation:

step 1

Find the square feet of tile

The area of the tile is equal to

$A=(15)(26-13)=195\ ft^{2}$

step 2

Find the square feet of carpet

Remember that

$38\frac{1}{2}\ ft=38.5\ ft$

The area of the carpet is equal to

$A=(38.5)(26)-195-(11)(13)\\A= 1,001-195-143\\A=663\ ft^{2}$

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3 years ago

In triangle ABC shown below, the sizes of the acute angles are given as ∠CAB = 3x and ∠CBA = 2x. Solve for the two angles in deg

otez555 [7]

$\bigtriangleup ABC \: has\: a\: right\: angle\: C\\\Rightarrow \hat{A}+\hat{B}=90° \Leftrightarrow 3x + 2x = 90\Leftrightarrow 5x = 90\Leftrightarrow x = 18\\\Rightartow \hat{A}=3\times 18=54°,\hat{B}=2\times 18=36°$

3 0

3 years ago

calculate the time taken for a train to travel 1000m if its initial is 3 m/s and it is moving at a constant acceleration of 0.1m

Anna [14]

Answer:

Step-by-step explanation:

For obects already in motion, the distance travelled, s, is:

s = vi*t + (1/2)at^2

where vi is the initial velocity, a is the acceleration, and t is the time in seconds.

We want the time, t, to reach 1000 meters.

1000 m = (3 m/s)*t + (1/2)*(0.1m/s^2)*(t^2)

(1/2)*(0.1m/s^2)*(t^2) = 0.05t^2

0.05t^2 + 3t -1000 = 0

Solve quadratic equation:

t = 114.6 seconds

7 0

2 years ago

In 2000, an estimated 7.7 x 10^7 spoke French as their first language and an estimated 1 x 10^8 people spoke German as their fir

saw5 [17]

Answer:

German

Step-by-step explanation:

Given :

Number of people who spoke French as first language in 2000 = 7.7 * 10^7 ; in standard form ;

7.7 * 10^7 = 7.7 * (10 * 10* 10 * 10* 10* 10 * 10) = 77,000,000 = 77 million

Number of people who spoke German as first language in 2000 = 1 * 10^8 ; in standard form ;

1 * 10^8 = 1 * (10 * 10* 10 * 10* 10* 10 * 10 * 10) = 100,000,000 = 100 million

German had more speakers

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3 years ago

Select all that apply. a. Acuteb. Reflexc. Rightd. Obtusee. Straight​

Select all that apply. a. Acuteb. Reflexc. Rightd. Obtusee. Straight