3 years ago

Question Progress Homework Progress 4/ Work out the size of angle x. 105 140

Mathematics

1 answer:

agasfer [191]3 years ago

5 0

Answer:

Step-by-step explanation:

Sum of angles of a triangle = 180

x + (180 - 105) + (180 -140) = 180

x + 75 + 40 = 180

x = 180 -75 - 40

x = 65

You might be interested in

Graph the system of equations.

Marat540 [252]

You can soustracte the first or the second one

and y cancel

x = 6

now you put 6 in x
you can take the first or the second one

6 - y = -2
6 - y = -2
y = -8

8 0

3 years ago

An item costs $390 before tax, and the sales tax is $35.10. Find the sales tax rate. Write your answer as a percentage.

DanielleElmas [232]

Answer:

Use this pencentage change formula:

New - Old

---------------- x 100

Old

Step-by-step explanation:

390 + 35.10 = 425.1 (New value)

So apply this to the formula:

425.1 - 390

--------------- x 100

390

Which is = 9%

Hope it helps. Cheers! :)

7 0

3 years ago

At 2:00 PM a car's speedometer reads 30 mi/h. At 2:20 PM it reads 50 mi/h. Show that at some time between 2:00 and 2:20 the acce

storchak [24]

Answer:

The correct answer will be "60 min/hour".

Step-by-step explanation:

At time 2:00 PM

A car reads = 30 mi/h

At time 2:20 PM

A car reads = 50 mi/h

Now,

At time 2:00 PM

t = 0

At time 2:20 PM

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

$v(0)=30$

$v(\frac{1}{3})=50$

For MVT,

$v'(c)=\frac{v(\frac{1}{3} -v(0))}{(\frac{1}{3} )}$

$=\frac{20}{\frac{1}{3} }$

$=60 \ min/hour$

5 0

3 years ago

Finding Value of Function

Anestetic [448]

Answer:

Step-by-step explanation:

fx+3

4 0

3 years ago

Please help..........

Vilka [71]

3. 48 that’s all I know

5 0

3 years ago