18.( +4). 56 solución

Helppppppppppp please and expalin if you can

Tanzania [10]

Thanks for the hint, computer overlord.

Angle FED is a right angle because all angles that subtend diameters are right. So a is complementary to 35°. a=55°.

b is an arc subtended by angle FEP. So its measure will be double that angle, b=70°.

c is subtended by angle DEP which is a. c will be double a, c=110°.

d is subtended by the 60° angle, so d=120°.

e is the other half of the semicircle from d, so together they should make 180°. That means e=60°.

f subtends arc e so will be half, f=30°. Since DEF is right it's also the complementary angle to 60°, also giving f=30°.

g subtends arc b, so it's half its measure, g=35°

h subtends arc d, so its half its measure, h=60°

8 0

2 years ago

At Maddison high school each student studies one foreign language is 3/5 take Spanish and one-fourth of the remaining take germa

Snezhnost [94]

Answer:

Step-by-step explanation:

3/5 = 0.6

1 - 0.6 = 0.4 students left

Multiply the amount of students remaining by the fractional amount that take German

0.4 x 1/4 = 0.1

1 - 0.6 - 0.1 = 0.3

0.3 x 100 = 30%

Therefore 30% of students take French

7 0

2 years ago

Isabelle has 4 more pairs of shoes than Leon. If Leon has s pairs of shoes, which expression could be used to find how many pair

7nadin3 [17]

Answer:

y=4x+b

Step-by-step explanation:

y = number of shoes isabelle has b = number of shoes leon has

4 0

2 years ago

Could someone help me arrange these pairs of points in increasing order of the slopes of the lines joining them. (15, 30) and (2

Zina [86]

Answer:

(e) (27, 2) and (243, 18)

(g) (63, 9) and (84, 12)

(d) (45, 15) and (60, 20)

(c) (27, 12) and (72, 32)

(a) (15, 30) and (20, 40)

(b) (12, 32) and (18, 48)

(f) (18, 63) and (24, 84)

Step-by-step explanation:

Required

Arrange in increasing order of slope

Slope (m) is calculated using:

$m = \frac{y_2 -y_1}{x_2 - x_1}$

So, we have:

(a) (15, 30) and (20, 40)

$m = \frac{40 -30}{20- 15}$

$m = \frac{10}{5}$

$m =2.00$

(b) (12, 32) and (18, 48)

$m = \frac{48 -32}{18- 12}$

$m = \frac{16}{6}$

$m = 2.67$

(c) (27, 12) and (72, 32)

$m = \frac{32-12}{72- 27}$

$m = \frac{20}{45}$

$m = 0.44$

(d) (45, 15) and (60, 20)

$m = \frac{20-15}{60- 45}$

$m = \frac{5}{15}$

$m = 0.33$

(e) (27, 2) and (243, 18)

$m = \frac{18-2}{243- 27}$

$m = \frac{16}{216}$

$m = 0.07$

(f) (18, 63) and (24, 84)

$m = \frac{84-63}{24- 18}$

$m = \frac{21}{6}$

$m = 3.50$

(g) (63, 9) and (84, 12)

$m = \frac{12 -9}{84- 63}$

$m = \frac{3}{21}$

$m = 0.14$

From least to greatest slope, the pair of points are:

(e) (27, 2) and (243, 18)

(g) (63, 9) and (84, 12)

(d) (45, 15) and (60, 20)

(c) (27, 12) and (72, 32)

(a) (15, 30) and (20, 40)

(b) (12, 32) and (18, 48)

(f) (18, 63) and (24, 84)

6 0

2 years ago

Combine like terms for <br> (3x²+2x²-5x+7)+(4x²+2x-3)

horsena [70]

Answer:

9x^2-3x+4

Step-by-step explanation:

(3x^2+2x^2-5x+7)+(4x^2+2x-3)

5x^2-5x+7+4x^2+2x-3

5x^2+4x^2-5x+2x+7-3

9x^2-3x+7-3

9x^2-3x+4

5 0

3 years ago

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18.( +4). 56 solución​

18.( +4). 56 solución