3 years ago

Solve each equation mentally

Mathematics

1 answer:

Phoenix [80]3 years ago

5 0

1. x=2
2. X=100
3. X=100
4.-1

You might be interested in

Verify the identity: (1-sinx)/cosx = cosx/(1+sinx)

Tresset [83]

Cross multiply the expression so that we can get

(1+sinx)(1-sinx) = cos^2 x

1 - sin^2 x = cos^2 x

cos^2 x + sin^2 x = 1

since

cos^2 x + sin^2 x = 1

therefore

1 = 1

the two expressions are identical in a trigonometric sense

4 0

3 years ago

The relationship between time and the distance remaining one 3 mile walk for someone walking at a steady rate of 2 miles per hou

andre [41]

It would take 1 1/2 hour to walk three miles.

8 0

3 years ago

Find the value of x if ∡A and ∡B are supplementary angles.

Elanso [62]

Answer:

$x = 30.5$

Step-by-step explanation:

Two angles are supplementary when they add up to 180°.

So we know that:

$C + D = 180$

Supplanting we get:

$(3x-44) + (5x-20) = 180$

We add up the X's.

$8x-44-20 = 180$

$8x-64 = 180$

Then we send 64 to the other side adding:

$8x = 180+64$

$8x = 244$

And then the 8 goes dividing:

$x = 244 : 8$

$x = 30.5$

3 0

3 years ago

Getting doubles when two dice are rolled.

Alisiya [41]

Answer:

Make sure you pass go!!!!!!!

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

you go to old navy and have $40 in your bank account. You overdraft and spend 62.30. What is the balance in your account now

Elden [556K]

The answer is -22.30

3 0

3 years ago

Read 2 more answers

Solve each equation mentally​

Solve each equation mentally