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Anna35 [415]
2 years ago
13

Help me please

Mathematics
2 answers:
stepan [7]2 years ago
4 0
Chau’s height = c
c - 10 = 47
i think ?
AveGali [126]2 years ago
4 0
“Difference of” means subtraction, so it would be 47 is the (or =) c-10
47= c-10
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Can you solve this?
marusya05 [52]

Answer:

D

Step-by-step explanation:

The area (A) of a trapezoid is calculated as

A = 0.5h(a + b)

where h is the perpendicular height and a, b the parallel sides.

Given A = 120, then

0.5 × 8(a + b) = 120, that is

4(a + b) = 120 ( divide both sides by 4 )

a + b = 30 cm → D

5 0
3 years ago
HELPPPPP PLEASEEEEE!!!
Pepsi [2]

Answer:

The height of right circular cone is h = 15.416 cm

Step-by-step explanation:

The formula used to calculate lateral surface area of right circular cone is: s=\pi r\sqrt{r^2+h^2}

where r is radius and h is height.

We are given:

Lateral surface area s = 236.64 cm²

Radius r = 4.75 cm

We need to find height of right circular cone.

Putting values in the formula and finding height:

s=\pi r\sqrt{r^2+h^2}\\236.64=3.14(4.75)\sqrt{(3.75)^2+h^2} \\236.64=14.915\sqrt{(3.75)^2+h^2} \\\frac{236.64}{14.915}=\sqrt{14.0625+h^2}  \\15.866=\sqrt{14.0625+h^2} \\Switching\:sides\:\\\sqrt{14.0625+h^2} =15.866\\Taking\:square\:on\:both\:sides\\(\sqrt{14.0625+h^2})^2 =(15.866)^2\\14.0625+h^2=251.729\\h^2=251.729-14.0625\\h^2=237.6665\\Taking\:square\:root\:on\:both\:sides\\\sqrt{h^2}=\sqrt{237.6665} \\h=15.416

So, the height of right circular cone is h = 15.416 cm

4 0
2 years ago
Find the area of the
Flura [38]

Answer:

54.88 in^2

Step-by-step explanation:

Area of a parallelogram is calculated by multiplying height and base

9.8*5.6 = 54.88 in^2

6 0
3 years ago
Translate “4 less than five times a number is –11” into a mathematical equation.
hram777 [196]
4 less than five times a number is -11:
5x - 4 = -11
8 0
3 years ago
What is the range of f(x)=43*2.4^x
Aliun [14]
This is an exponential function.
Without any transformations (up or down), the range is y > 0
7 0
3 years ago
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