All categories

2 years ago

Someone please help me answer this

Mathematics

2 answers:

Brrunno [24]2 years ago

8 0

B= 30
a2+b2=c2
72^2+b^2 = 78^2
5184+b^2 = 6084
b2 = 900
b = 30

S_A_V [24]2 years ago

6 0

Answer:

b = 30 km is the answer

Step-by-step explanation:

a = 72 km

b = ?

c = 78 km

According to the Pythagoras theorem,

a² + b² = c²

72² + b² = 78²

5184 + b² = 6084

b² = 6084 - 5184

b² = 900

b = 30 km

∴ b = 30 km is the length of the missing leg

You might be interested in

The length of a rectangle is 4 inches more than its widith. The area of the rectangle is equal to 4 inches less than 3 times the

zepelin [54]

Length is 14
width is 10

6 0

3 years ago

Week 6<br> Please answer with clear instructions so that i can apply this to other questions

Crazy boy [7]

Answer:

Step-by-step explanation:

Gradient is the same as slope to get your answer follow this formula y2 - y1 divided x2 -x1 in this problem it will look like this

4 - (-4) /1 - (-1) =

8 / 2 =

= 4

I hope this helps!!

3 0

2 years ago

What is f-7/g=h solve for f

max2010maxim [7]

$\frac{f - 7}{g}$ = h Multiply both sides by g to cancel out the fraction
f - 7 = gh Add 7 to both sides
f = gh + 7

3 0

3 years ago

If xr-st=r, which expression represents x

Alexus [3.1K]

Answer:

To get an expression relating to x you need to have x alone on one side of your equation. ie x =

Try this:

rx - st = r

remove st from the rx side

rx = r + st

now divide by r

x = (r + st)/r

You now have your expression relating to x

7 0

3 years ago

In the diagrams below, ABC is similar to RST. Use a proportion with sides AB and RS to find the scale factor of ABC to RST. Show

kicyunya [14]

Answer:

The scale factor of triangle ABC to triangle RST is 1/3

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

Let

z ----> the scale factor

To find the scale factor divide the length side of the image (reduced triangle) by the corresponding length side of the pre-image (original triangle)

$z=\frac{RS}{AB}$

substitute the values

$z=\frac{6}{18}$

simplify

$z=\frac{1}{3}$

The scale factor is less than 1

Is a reduction

5 0

3 years ago

Read 2 more answers