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3 years ago

Negative 8 times < 4 Negative 8 times < 4

Mathematics

1 answer:

Anastasy [175]3 years ago

8 0

Answer:

So -8*<4 Is not a complete Problem... If your saying -8<4 then the anwser is 1. But im guessing your saying -8X<4 which is negative eight ex (x) less than four. so heres that:

Step-by-step explanation:

Let's solve your inequality step-by-step.

−8x<4

Step 1: Divide both sides by -8.

−8x/−8<4/−8

=x>−1/2

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2.4z+1.2z-6.5=0.7 I don't get it

almond37 [142]

Basically that answer is incorrect. If you'd learn about combining, multiplying, dividing or subtracting like terms, this will be a simple problem. To be specific, like term is a number with a letter with it.

For example, 2.4z is a like term.

so you can only add like term, not any other normal number. When two terms have the same "letter", you will have to do what the sign said so in the problem....

2.4z + 1.2z - 6.5 = 0.7
3.6z - 6.5 = 0.7 (Add but leave the z alone because you are not multiplying)

The final answer is 3.6z - 6.5 because you cannot do anything else to that problem.

3.6z-6.5=0.7 is not true.

3 0

3 years ago

A flagpole sits on the top of a cliff that is 25 m above sea level. If the angle of elevation from a boat on the water to the to

OLEGan [10]

Answer:

3.2 m

Step-by-step explanation:

Let x be the distance between the cliff and the boat.

Since the cliff is 25 m above sea level and the distance between the boat and the height of the cliff are perpendicular, and the line of sight of the boat to the base of a cliff is 29 , these three form a right-angled triangle with hypotenuse side as the line of sight of the elevation of the boat to the base of the cliff.

So, using trigonometric ratios, tan29° = 25/x

x = 25 m/tan29° = 25 m/0.5543 = 45.1 m

Also, the line of sight of the top of the flagpole, the cliff and the distance between the boat and the cliff form a right-angled triangle with hypotenuse side as the line of sight of the top of the flagpole,

Now, the angle of elevation of the top of the flagpole from the top of the boat is 32°, we now find the angle opposite to x, the distance from the boat to the cliff.

Since it is a right-angled triangle, thus one angle is 90° and the unknown angle is A.

So, 90° + 32° + A = 180° (sum of angles in a triangle)

122° + A = 180°

A = 180° - 122°

A = 58°

Let y be the length of the flagpole. In this same triangle, using the sine rule, with x being the side opposite A and 25 + y being the side opposite the 32° angle, where 25 + y = height of cliff + length of flagpole, then

x/sinA = (25 + y)/sin32°

25 + y = xsin32°/sinA

y = xsin32°/sinA - 25

y = 45.1sin32°/sin58° - 25

y = 45.1 × 0.5299/0.8480 - 25

y = 45.1 × 0.6249 - 25

y =28.183 - 25

y = 3.183

y ≅ 3.2 m to one decimal place

6 0

3 years ago

Which graph represents the function f(x)=1/3^x+2

Shkiper50 [21]

Answer:

The second graph, as x approaches positive 2 is correct.

Explanation:

Create a table to find the points and graph to find the curve.

x. -2 1 0 1 -2

y. 11 5 3 2.3 2.1

6 0

4 years ago

X+y=5 and x-3y=3 linear equation I don't get an answer that makes sense

ddd [48]

If you want it to be y=mx+b form then the equations should look like this: y=x+5 and y=-1/3x+1.

3 0

3 years ago

2/3 of the product of 3/8 and 16

kakasveta [241]

Hi there!

To solve this problem, we should first find the product of 3/8 and 16 and multiply the solution by 2/3.

Let's find the product first.

3/8 × 16 = 48/8

Simplify.

48/8 = 48 ÷ 8 = 6

Now, we find 2/3 of 6.

6 ÷ 3 × 2 = 2 × 2 = 4

So, your answer is 4.

Hope this helps!

7 0

3 years ago