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mamaluj [8]
3 years ago
12

2/5 of 40 I need help​

Mathematics
1 answer:
ch4aika [34]3 years ago
6 0

Answer:

32. A.

Step-by-step explanation: because i did 4/5 of 40 and got 32.

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If cos 37 degrees is close to 4/5, which is closest to the measure of line OP?
geniusboy [140]
 We know that ON = 80 cm and ∠ O = 37°.
cos 37° = 4/5
Adjacent / Hypotenuse = cos∠O
80/OP = cos 37°
80/ OP = 4/5
OP = 80 : 4/5 = 80 · 5/4 = 100
Answer:
d. 100 cm.
3 0
3 years ago
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Find the surface area of the composite solid. Round the answer to the nearest hundredth
stira [4]

Answer:

135.39

Step-by-step explanation:

The solid consist of 4 triangles and a 5 rectangles.

Formula to calculate area of triangle is

1/2 (height) (base)

Formula to calculate area of rectangle is

length x width

so

Total surface area of the composite solid is

2( 4(4) + 6(4) + 1/2(√13)(4) + 1/2(2√2)(6) ) + 6(4)

111.39 + 24

135.39

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3 years ago
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What is the width of a rectangle with sn area of 300 square feet if it's length is 1 foot?
MA_775_DIABLO [31]
Well since we know the formula for area is length×width, we can divide area by length to find width. 300÷1=300. your first answer is 300.

if its 2 feet, 300÷2=150, 150 feet is your answer

if its 3 feet, 300÷3=100, 100 feet is your answer
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3 years ago
The image of (-2, 7) reflected across the x-axis is
Ulleksa [173]

Answer:

(-2,-7)

Step-by-step explanation:

because it's reflected across the x-axis, only the y-intercept will change

3 0
3 years ago
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MATH
Vedmedyk [2.9K]

Step-by-step explanation:

the point of extreme value we get a the zero dilution of the first derivative of the function.

h(t) = -0.2t² + 2t

h'(t) = -0.4t + 2

so,

-0.4t + 2 = 0

2 = 0.4t

t = 2/0.4 = 5 seconds

so, after 5 seconds the ball reaches its maximum height.

FYI : that height is then h(5).

-0.2×5² + 2×5 = -5 + 10 = 5 ft

so, all in all, a very weak kick in very low gravity ...

5 0
2 years ago
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