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2 years ago

What is triangle ABC ? (line segments)

Mathematics

1 answer:

Bess [88]2 years ago

7 0

Triangle ABD and ADC are righttriangles so u can use the Pythagorean theorem/triples. the triples are 3/4/5 and 5/12/13. 12 is 4x3, and 15 is 5x3, so BD is 3x3, which is 9. AC is 13, as it is part of the Pythagorean’s triples

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A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and

Vlad1618 [11]

Using the weighed mean formula, it is found that Mara's average for the course was of 68.6.

<h3>What is the weighed mean?</h3>

The weighed mean is given by the <u>sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights</u>.

In this problem, the weights are as follows:

A quiz has a weight of 1.

A test has a weight of 2.

The final examination has a weight of 4.

Hence, her weighed mean is given as follows:

$M = \frac{2(65 + 62 + 60) + (61 + 96 + 80 + 89) + 4(65)}{6 + 4 + 4} = 68.6$

Mara's average for the course was of 68.6.

More can be learned about the weighed mean formula at brainly.com/question/24398353

5 0

1 year ago

Jada invests $590 in a money market account. Her account pays 7% simple interest. she earns 1.652 of interest of four years of s

Leni [432]

$169.92 if im thinking correctly

3 0

2 years ago

Mrs. Spect lost 1.25 pounds last week. She lost 2 pounds two

kenny6666 [7]

Answer:

On average she looses 1.33 pounds per week

Step-by-step explanation:

3/4=0.75

1.25+2+0.75=4 -> total weight loss

There are 3 weeks in total.

4/3=1.33

5 0

2 years ago

WILL GIVE BRAINLIEST!!! Find the length of DF

Leto [7]

Answer:

190.4

Step-by-step explanation:

Solve the following system:

{2 y - 3 x - 8 = 3 y + 4 x - 1 | (AB=DE)

4 y + 10 x + 3 = -2 y - 17 x + 9 | (BC=EF)

x = -16/5, y = 77/5

DF=AC=-27x+5y+27=190.4

There you go, have a great day

8 0

2 years ago

Can someone please help me with this math question .

Alona [7]

No, Yes, No, Yes

using the laws of exponents

(1)

( $4^{3}$ )³ = $4^{9}$

4³ × 4³ = $4^{6}$

$4^{9}$ ≠ $4^{6}$ → No

(2)

( $3^{4}$ )^4 = $3^{16}$

$3^{8}$ × $3^{8}$ = $3^{16}$ → Yes

(3)

$18^{8}$ = (6 × 3 )^8 = $6^{8}$ × $3^{8}$ ≠ $6^{4}$ × $3^{4}$ → No

(4)

$20^{3}$ = (4 × 5 )³ = 4³ × 5³ → Yes

5 0

2 years ago