1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ksivusya [100]
3 years ago
10

Help please! 15 points

Mathematics
1 answer:
Yanka [14]3 years ago
7 0

Answer:

the answer is 23. even tho it says he had 30 at the time you must subtract 7 because thats what he started with. hope i could help! :D

Step-by-step explanation:

You might be interested in
Identify the leading coefficient in the following polynomial:<br> – 5x² + 3x - 7
insens350 [35]

Answer:

-5

Step-by-step explanation:

The leading coefficient means the thing you're multiplying your highest power by. Here, your highest power of x is x^2, and that term's coeff. is -5, so the leading coefficient is -5.

7 0
3 years ago
A carpenter is putting a skylight in a roof. If the roof measures 10 + 8 by 8 + 6 and the skylight measures + 5 by 3 + 4, what i
Usimov [2.4K]

Answer:

The area is: 77x^2 + 105x + 28, option b.

Step-by-step explanation:

Rectangular area:

The area of a rectangular space is given bt the multiplication of its measures.

Area of the roof:

Dimensions of 10x + 8 and 8x + 6. So

A_{r} = (10x+8)(8x+6) = 80x^2 + 60x + 64x + 48 = 80x^2 + 124x + 48

Area of the skylight:

Dimensions of x + 5 and 3x + 4. So

A_{s} = (x+5)(3x+4) = 3x^2+4x+15x+20 = 3x^2 + 19x + 20

What is the area of the remaining roof after the skylight is built?

Total subtracted by the skylight, which is a subtraction of a polynomial, in which we subtract the like terms. So

A_{r} - A_{s} = 80x^2 + 124x + 48 - (3x^2 + 19x + 20) = 80x^2 - 3x^2 + 124x - 19x + 48 - 20 = 77x^2 + 105x + 28

The area is: 77x^2 + 105x + 28, option b.

3 0
2 years ago
-mb-m^2 for m=3.48 and b=96.52
AlekseyPX
I- huh I don’t understand the question
3 0
3 years ago
Which pair of lines are perpendicular
Gnesinka [82]

The answer is A. A perpendicular equation will have the opposite and reciprocal slope as the original equation.


Once converted to the slope-intercept form of y = mx+b, we find the two equations for A are y = 2x-1 and y = (-1/2)x + 3/2. The opposite reciprocal of the first equation's slope (m in the equation form given) is -1/2, which as you can see if the slope of the other equation.

5 0
3 years ago
Read 2 more answers
Gabriel is driving 80 kilometers in one hour. How many kilometers does he drive in 1.5 hours
gogolik [260]

Answer:

He drove 120 km

Step-by-step explanation:

We know that 1 hour of driving is equal to 80 km. We need to find out for 1.5 km. First, we need to know how much km for 1/2 of an hour. Which will be 40, because 80/2=40. Then we add up the 40 to the 80, and we get 120 km in total.

5 0
3 years ago
Other questions:
  • Which package has the lowest cost per ounce of rice ( 12, 18, 7)
    7·1 answer
  • What is the incorrect rounding for 53.864
    12·1 answer
  • The Walters family bought 3 ham sandwich and 4 fruit cups for lunch. Each sandwich cost $4 and each fruit cups cost $2. How much
    8·1 answer
  • Here is a table of values for y=f(x).
    12·1 answer
  • Graph solve for y 5y-x=20
    14·2 answers
  • !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! HELP ASAP 20 PTS !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    15·2 answers
  • Sam is proving the product property of logarithms.
    14·1 answer
  • Divide. 71 ÷ 6 Enter your answer by filling in the boxes. __R__
    15·2 answers
  • Susan has 343 cookies. She packs as many of them as she can equally in 19 boxes. She gives the rest to Mike. How many cookies do
    7·1 answer
  • Find the area of a circle with radius, r = 5.64m.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!