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slamgirl [31]
2 years ago
13

I’ll mark brainliest

Mathematics
1 answer:
IrinaK [193]2 years ago
5 0

Answer:

7, 65°

Step-by-step explanation:

(18b-11)+(9b+2)=180°

27b-9=180°

27b=189

b=7

9b+2

9×7+2

63+2

65

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Distance that sound travels through air d varies directly as time t, and d=1,675 ft when t=5 seconds, find t when d=5025ft
Marysya12 [62]
Divide 5025 by 1675 then whatever you get multiply it by 5 that will get you t when d is 5025
5 0
3 years ago
Can someone pls help me with number 28.
alexandr402 [8]

Answer:

f(x) = \frac{3}{x} \\\\g(x) = x - 5

Step-by-step explanation:

3 0
1 year ago
A stand is a frustum shape, formed by removing a small square-based pyramid from the top of
kupik [55]

The frustum can be considered as consisting of a square pyramid, less the

cut volume.

  • The mass of the stand, is approximately 18.60905 kg

Reasons:

The given parameter of the frustum are;

The density of the frustum, ρ = 85 g/cm³

Height of pyramid, h = 9 cm

Side length of base = 10 cm

Height of frustum

By proportional shapes, the side length of the top of the frustum can be found as follows;

\dfrac{4 \, cm}{9 \, cm} = \dfrac{x}{10 \, cm}

x = \dfrac{4 \, cm}{9 \, cm} \times 10 \, cm = 4\frac{4}{9} \, cm

V = \dfrac{h}{3} \times \left(B_1 + B_2 + \sqrt{B_1 \times B_2} \right)

B₁ = 10², B₂ = \left(4\frac{4}{9} \right)^2

Therefore;

V = \dfrac{4}{3} \times \left(10^2 + \left(4\frac{4}{9}  \right)^2  + \sqrt{10^2 \times  \left(4\frac{4}{9}  \right)^2} \right) \approx 218.93

The volume of the stand, V ≈ 218.93 cm³

Mass = Volume × Density

∴ Mass of the stand, m = 218.93 cm³ × 85 g/cm³ = 18,609.05 grams = 18.60905 kg.

Learn more here:

brainly.com/question/24323975

8 0
3 years ago
Whats the answer to this question?
Ilia_Sergeevich [38]
Do you have options to choose from?
6 0
3 years ago
Read 2 more answers
At the movie theatre, child admission is $6.40 and adult admission is $9.90. On Friday, 154 tickets were sold for a total sales
Minchanka [31]
6.40x+9.90(154-x)=1230.90
Solve for x
X=84 for child

154-84=70 for adults
4 0
3 years ago
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