All categories

3 years ago

Can someone help with my math homework

Mathematics

1 answer:

Murljashka [212]3 years ago

5 0

Let's solve for c.

x2+18x+c=25+c

Step 1: Add -c to both sides.

x2+c+18x+−c=c+25+−c

x2+18x=25

Step 2: Add -x^2 to both sides.

x2+18x+−x2=25+−x2

18x=−x2+25

Step 3: Add -18x to both sides.

18x+−18x=−x2+25+−18x

0=−x2−18x+25

Step 4: Divide both sides by 0.

00=−x2−18x+250

c=−x2−18x+250

Answer:

c=−x2−18x+250

You might be interested in

A young boy has 40 total pets. He has two different types of pets. He has cats and penguins. The total number of the heads of hi

Nina [5.8K]

Answer:

He has 30 penguins and 10 cats.

Step-by-step explanation:

Let's define the variables:

C = number of cats.

P = number of penguins.

We know that he has a total of 40 pets, then:

C + P = 40

We also know that the total heads (40 heads, each animal has one) plus the number of wings (P*2, each penguin has 2) is equal to the number of feet of his pets (4*C + 2*P, because each cat has 4 paws, and each penguin has 2)

Then we have the equation:

40 + 2*P = 4*C + 2*P

Notice that in the second equation we have the term 2*P in both sides of the equation, then we can just subtract 2*P in both sides to get:

(40 + 2*P) - 2*P = 4*C + 2*P - 2*P

40 = 4*C

Now with this, we can find the value of C.

40/4 = C = 10

Then he has 10 cats.

Now we can replace this in the equation:

P + C = 40

to find the value of P

P + 10 = 40

P = 40 - 10 = 30

P = 30

He has 30 penguins.

3 0

3 years ago

PLEASE HELP ILL GIVE 50 POINTS AND I WILL MARK BRAINLIEST

kherson [118]

See attached picture for the answers:

4 0

3 years ago

Read 2 more answers

Can someone help me please

Lisa [10]

Answer:

perimeter is 12x-6

Step-by-step explanation:

perimeter is the sum of all sides

3(x+2) + 2x+11 + 7x-23

distribute the 3 in the first term, then combine 'like terms'

3x+6 + 2x+11 + 7x-23

3x+2x+7x + 6+11+(-23)

12x-6

4 0

2 years ago

Read 2 more answers

Roman55 [17]

Anser: Brooo

Step-by-step explanation:

I cannot readd this

8 0

2 years ago

10. What is the measure of angle C?<br> A. 25°<br> B. 30°<br> C. 60°<br> D. 75°

Reil [10]

Answer:

Step-by-step explanation:

x + 5 + 3x + C = 180 All triangles have 180 degrees.

4x + 5 + C = 180

But C must be equal to 3x. Notice the markings on the lets of the triangle.

4x + 5 + 3x = 180

7x + 5 = 180 Subtract 5 from both sides

7x = 180 - 5

7x = 175

x = 25

But angle C = 3x

C = 3*25

C = 75

8 0

3 years ago