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2 years ago

HELP ASAP!!!!!!!!!!!!!!!

Mathematics

2 answers:

nadya68 [22]2 years ago

7 0

Answer:the answer is 5

Step-by-step explanation:

it is correct

kiruha [24]2 years ago

6 0

Answer:

5.74 (rounded)

Step-by-step explanation:

4^2+b^2=7^2

16+b^2=49

-16 -16

b^2=33

√b=√33

b= about 5.74

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The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm2/m

Mnenie [13.5K]

Answer:

The base is reducing at a rate of 3.4cm per min.

Step-by-step explanation:

Let The Height of the Triangle, h

Area of the triangle = A

Area of a Triangle, $A= \frac{1}{2}bh$

When $A=190 cm^2, h=10cm$

$190= \frac{1}{2}*b*10\\b=38cm$

$\frac{dA}{dt}=\frac{1}{2}h\frac{db}{dt}+ \frac{1}{2}b\frac{dh}{dt}\\\frac{dh}{dt}=1 cm/min, \frac{dA}{dt}=2cm^2/min,$

$2=\frac{1}{2}*10*\frac{db}{dt}+ \frac{1}{2}*38*1\\2=5\frac{db}{dt}+19\\2-19=5\frac{db}{dt}\\-17=5\frac{db}{dt}\\\frac{db}{dt}=-\frac{17}{5} =-3.4 cm/min$

The base is reducing at a rate of 3.4cm per min.

8 0

3 years ago

A triangle has a base of 54 cm. The height is unknown. Complete the equation that can be used to find the area, A, of the triang

Nookie1986 [14]

Answer:

Step-by-step explanation:

area=1/2×base×height

A=1/2×54×h=27h

4 0

3 years ago

Please solve this I need it for class.

Agata [3.3K]

Answer:

A =1

B = 9

C = 8

D = 1

4 0

2 years ago

Read 2 more answers

What is the solution of -4(8-3x)>or=6x-8?

Illusion [34]

Answer:

-4(8-3x)>or =6x-8

Step-by-step explanation:

open d bracket

-32+12x >or = 6x-8

collect like terms

12x-6x >or =-8+32

6x = 24

divide both sides by 6

x= 4

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3 years ago

1 . Alberto has 318 baseball cards and 273 basketball cards. Estimate how many sports cards Alberto has. Describe the strategy y

Galina-37 [17]

For 1. To estimate how many sports cards Alberto had, you would round each number to the nearest ten, so 318 would become 320. 273 would then become 270. You would then add those two and would get 590. So, Alberto had 590 sports cards (estimated). If you were looking for the actual answer (not estimated) , you would get 591.

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2 years ago