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1 year ago

Evaluate :11/3 + -3/7 + -4/9

Mathematics

1 answer:

solmaris [256]1 year ago

8 0

Answer:

3.67+(-0.43)+(-0.44)

3.67-0.43-0.44

3.24-0.44

2.8 Ans

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Simplify the expression. -4i(2+3i)

oee [108]

Answer:

-8i + 12

Step-by-step explanation:

-4i(2 + 3i) = -8i - $12i^{2}$ = -8i - 12 * (-1) = -8i + 12

5 0

2 years ago

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I'm solving for UW. And we're using pythagorean theorem.

Alik [6]

UW = 45
a squared + b squared = c squared
- 6^2 + x^2 = 9^2
- 36 + x = 81
- (subtract 36 from both sides)
- x = 45

i'm pretty sure this is right and i hope it helps you!

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2 years ago

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Triangle ABC is an isosceles triangle in which side

Shkiper50 [21]

Answer:

Option B.

Step-by-step explanation:

Consider the below figure attached with this question.

It is given that triangle ABC is an isosceles triangle.

From the below figure it is clear that the vertices of triangle are A(-2,-4), B(2,-1) and C(3,-4).

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Using this formula, we get

$AB=\sqrt{(2-(-2))^2+(-1-(-4))^2}=\sqrt{16+9}=5$

$BC=\sqrt{(3-2)^2+(-4-(-1))^2}=\sqrt{1+9}=\sqrt{10}$

$AC=\sqrt{(3-(-2))^2+(-4-(-4))^2}=\sqrt{25}=5$

Now,

Perimeter of triangle ABC = AB + BC + AC

$=5+\sqrt{10}+5$

$=10+\sqrt{10}$

So, perimeter of triangle ABC is $10+\sqrt{10}$ units.

Therefore, the correct option is B.

4 0

2 years ago

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Ifyou are asked to solve a system ofequations in which there is no linear equation to start with, you can sometimes begin by iso

maw [93]

What you typped is correct

7 0

2 years ago

Need help ASAP thankyou sorry if u can’t see the picture but u can zoom in :)

Andrej [43]

Answer:

a)Volume 390ft3. Surface area 450ft2

b)surface area

c)volume

Step-by-step explanation:

2*15*13=390

2*15*2=60+15*13*2=390

7 0

2 years ago