3 years ago

Solve by factoring or finding square roots x^2-18x-40=0

Mathematics

2 answers:

irina1246 [14]3 years ago

8 0

Answer:

Step-by-step explanation:

podryga [215]3 years ago

7 0

Answer:x=-2 or x=20

Step-by-step explanation:

X^2-18x-40=0

X^2+2x-20x-40=0

X(x+2)-20(x+2)=0

(X+2)(x-20)=0

X+2=0 or x-20=0

X=-2 or x=20

You might be interested in

8/25 + 1/2 = ?? Simplify answer fully

Sergeu [11.5K]

Multiply the first fraction by two and the second by twenty five on both top and bottom.

16/50 + 25/50 = 41/50

7 0

3 years ago

Read 2 more answers

What is the answer 2+2=___+5=____

MakcuM [25]

Answer:

2+2+=4+5= 9

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A store sells 3 ears of corn for $1 they round prices to the nearest cent.Tell whether you would describe the relationship betwe

ziro4ka [17]

A store sells 3 ears of corn for $1. They round prices to the nearest cent as shown below. Tell whether you would describe the relationship between cost and number of ears of corn as proportional relationship. Justify your answer. Ears of corn 1 2 3 4 Amt charged($) 0.33 0.67 1.

7 0

2 years ago

Can someone please do this for me?

san4es73 [151]

Answer:

64°

Step-by-step explanation:

So supplement angles are equal to 180, so first our two angles added together will be 180:

x + x = 180

Now one of these angles is 6 greater than half:

x + (x/2 + 6) = 180

Then we will solve for x:

x + (x/2 + 6) = 180

x + x/2 + 6 = 180

x + x/2 = 174

$\frac{3}{2}$ x = 174

x = 116

Plug it back in:

x + (x/2 + 6) = 180

x/2 + 6

(116)/2 + 6

To check:

116 + 64 = 180 ✓

6 0

3 years ago

Describe a sequence of transformations that maps triangle ABC onto triangle A"B"C" Help please?

monitta

the answer is reflection

7 0

3 years ago