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3 years ago

(7 4/9 −8)∙3.6–1.6∙( 1/8 − 3/4 )+1 2/5 ÷(−0.35)

Mathematics

2 answers:

katrin2010 [14]3 years ago

5 0

Answer:

-4.10

Step-by-step explanation:

We have so solve $(7\tfrac{4}{9}-8)(3.6)-(1.6)(\frac{1}{8}-\frac{3}{4})+1\tfrac{2}{5}\div (-0.35)$

To solve this expression we will use BODMAS.

B ⇒ Bracket

O ⇒ open

D ⇒ Divide

M ⇒ Multiplication

A ⇒ Addition

S ⇒ Subtraction

First we will solve inside the brackets.

(1) $(7\tfrac{4}{9}-8)=\frac{69}{9}-8=(\frac{67-72}{9})=(\frac{-5}{9})$

(2) $(\frac{1}{8}-\frac{3}{4})=\frac{1-6}{8}=(\frac{-5}{8})$

Now expression becomes

$(\frac{-5}{9})(3.6)-(1.6)(\frac{-5}{8})+\frac{7}{5}\div (-0.35)$

= $(-5)(0.04)-(0.02)(-5)+\frac{7}{5}\times \frac{1}{(-0.35)}$

= $(-0.20)-(-0.10)+\frac{1}{5(-0.05)}$

= $-.20+.10-\frac{1}{.25}=-.20+.10-4$

= -4.20 + 0.10 = -4.10

salantis [7]3 years ago

3 0

Answer:

The answer is 2/5. ☺ Hope this helps

Step-by-step explanation:

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iragen [17]

Answer: -3π/2

Step-by-step explanation:

The unit circle is tricky, but here are some things to know:

When measuring angles, you usually move in the counter-clockwise direction. If you are moving clockwise (like shown in your picture), the angle will be negative.
The unit circle is typically measured in radians, not degrees

- To convert from radians to degrees, multiply by 180/π

- To convert from degrees to radians, multiply by π/180

The whole unit circle measures 2π (360 degrees). This means that the positive x-axis can be referred to as 0 or 2π, the positive y-axis is referred to as π/2, the negative x-axis is referred to as π, and the negative y-axis is referred to as 3π/2.

-If the angle is negative, switch the signs of the axis above.

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6 0

3 years ago

A ball is thrown straight up from the top of a building 144 ft tall with an initial velocity of 48 ft per second. The height

fgiga [73]

Answer:

180feet

Step-by-step explanation:

Given the function that models the height of a ball

s(t) = 144 + 48t − 16t^2.

At maximum height, the velocity is zero ie. ds/dt = 0

ds/dt = 48 - 32t

0 = 48 - 32t

48 = 32t

t = 48/32

t = 1.5secs

Get the maximum height

s(t) = 144 + 48t − 16t^2.

s(1.5) = 144 + 48(1.5)-16(1.5)^2

s()1.5) = 144 + 72 - 16(2.25)

s(1.5) = 144 + 72-36

s(1.5) = 180 feet

Hence the maximum height attained by the ball is 180feet

6 0

3 years ago

24. If 2A = 3B = 4C then A:B:Can is O a 23:4 O b. 4:32 O c. 6:4:3 O d. 3:4:2

katovenus [111]

Answer:

the answer is c. 6:4:3

Step-by-step explanation:

a=6; b=4; c=3

3 0

3 years ago

26-38+(-3) what is the answer.

Norma-Jean [14]

So basically, first just do this step by step, or subtract 38 from 26 first.

26 - 38 is basically -(38 - 26), or -12.

So then, it becomes -12 + (-3)

A - and a + becomes - because you're adding negative 3.

-12 - 3

Which then becomes -15.

4 0

3 years ago

Read 2 more answers

A boy stands 1 meter away from a lamppost. He is 1.8 meters tall and casts a shadow 2 meters long in the light from the lamp. Ho

Charra [1.4K]

A boy stands 1 meter away from a lamppost. He is 1.8 meters tall and casts a shadow 2 meters long in the light from the lamp

The diagram is attached below using the given information

We have two similar triangle

Triangle ACD is similar to triangle ABE. So the sides are in proportional

$\frac{DC}{EB} =\frac{AC}{AB}$