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3 years ago

What the diffrence in mass between 156kg and 454kg

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

454 minus 156 equals the difference, hope it helped !!!!!!!!!!!

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The area of a triangle is 80cm² and its base is 8cm. If its height is (6+k) cm, find the value if k.

Leviafan [203]

Answer:

K=14

Step-by-step explanation:

A=1/2*b*h

80=1/2*8*(6+k) multiply by 2 on both sides

160=8*(6+k) distribute by 8

160=48+8k subtract 48 from both sides

112=8k divide by 8

14=K

8 0

4 years ago

Write the standard equation of the circle with center (-4,-4) and radius 6.8

Levart [38]

Answer: $(x+4)^{2}+(y+4)^{2}=46.24$

Step-by-step explanation:

$(x+4)^{2}+(y+4)^{2}=6.8^{2} \\(x+4)^{2}+(y+4)^{2}=46.24$

7 0

2 years ago

To the nearest hundredth, what is the length of line segment AB?

Vesnalui [34]

Answer:

5.83 units

Step-by-step explanation:

See attached picture. You can use the Pythagorean Theorem. I added some lines to show the legs of a right triangle. AB is the hypotenuse.

$3^2+5^2=(AB)^2\\\\9+25 = (AB)^2\\\\34=(AB)^2\\\\AB=\sqrt{34} \approx 5.83$

5 0

2 years ago

I need help, I have tried looking it up but can’t find any help

german

Answer: $\frac{sin (4x)}{cos(14 x)}$

Step-by-step explanation:

We have the following expression:

$\frac{tan(9x)-tan(5x)}{1+tan(9x)tan(5x)}$

In order to work in a better way this expression, let's call $\alpha=9x$ and $\beta=5x$ and rewrite:

$\frac{tan(\alpha)-tan(\beta)}{1+tan(\alpha)tan(\beta)}$

Now, we know $tan \theta=\frac{sin \theta}{cos \theta}$ . Let's apply it here:

$\frac{\frac{sin (\alpha)}{cos(\alpha)}-\frac{sin(\beta)}{cos(\beta)}}{1+\frac{sin (\alpha)}{cos(\alpha)}\frac{sin(\beta)}{cos(\beta)}}$

$\frac{\frac{sin(\alpha)cos (\beta)-sin(\beta)cos(\alpha)}{cos(\alpha)cos(\beta)}}{\frac{cos(\alpha) cos(\beta)+sin(\alpha) sin(\beta)}{cos(\alpha)cos(\beta)}}$

Simplifying:

$\frac{sin(\alpha)cos (\beta)-sin(\beta)cos(\alpha)}{cos(\alpha) cos(\beta)+sin(\alpha) sin(\beta)}$

According these trigonometric identities, we have:

$sin(\alpha-\beta)=sin(\alpha)cos (\beta)-sin(\beta)cos(\alpha)$

$cos(\alpha+\beta)=cos(\alpha) cos(\beta)+sin(\alpha) sin(\beta))$

Then:

$\frac{sin(\alpha-\beta)}{cos(\alpha+\beta)}$

Writing again the actual values:

$\frac{sin(9x-5x)}{cos(9x+5x)}$

Finally:

$\frac{sin(4x)}{cos(14x)}$

5 0

3 years ago

Adriano runs a website that helps writers write better stories. Every month, Adriano receives a subscription free from $5 from e

Andru [333]

Andriano's business will earn $1150 this month.

Step-by-step explanation:

Given,

Existing subscribers = 200

New subscriptions = 40

Cancelled subscriptions = 10

Total subscribers this month = Existing + New - Cancelled

Total subscribers this month = 200+40-10 = 230

Subscription fee per subscriber = $5

Revenue generated from 230 subscribers = 5*230 = $1150

Andriano's business will earn $1150 this month.

Keywords: addition, multiplication

Learn more about multiplication at:

#LearnwithBrainly

3 0

3 years ago