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wolverine [178]
3 years ago
15

What’s the answer to this question

Mathematics
2 answers:
telo118 [61]3 years ago
5 0

Answer:

2x³ + 2x² + 2x + 2

Step-by-step explanation:

2x³ + 4x² - 2x² - 5x + 2 + 7x

Combine like terms:

2x³ + (4x² - 2x²) + (-5x + 7x) + 2

2x³ + 2x² + 2x + 2

Eva8 [605]3 years ago
3 0
I had to do it in my notes!

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A snowmobile traveled 32 miles in 2 1/3 hours.
sergey [27]

Answer:

  • 13.7 mph

Step-by-step explanation:

  • d = st

<u>Given</u>:

  • d = 32 miles
  • t = 2 1/3 hr = 7/3 hr

<u>Find the rate s:</u>

  • s = d/t
  • s = 32÷7/3 = 32 × 3/7 = 96/7 ≈ 13.7 mph (rounded)
4 0
2 years ago
Find the value of x in the triangle shown below.<br> Choose 1 answer:
Ad libitum [116K]

For the triangle, x is 12 units long.

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

The hypotenuse is the side which is the longest in the triangle and is always opposite the right angle.

In the given triangle, the hypotenuse is 13 units long. The other two sides measure 5 units and x units.

Step 2:

By substituting the known values, we get

13^{2} = 5^{2} + x^{2} .

x^{2} = 169 - 25 = 144.

x = 12.

Rounding this off to the nearest hundred, we get that x is 12 units long.

7 0
3 years ago
Can you please show me how to calculate the volume for each prism?
larisa [96]

Answer:

1st: volume = long x wide x high = 7 x [sqrt(25^2-7^2)] x 4 = 7 x 24 x 4 = 672

2nd: volume = area of base(circle) x high = pi x 9^2 x 8 = ~ 2035.8

3rd = volume = area of base(triangle) x high = [sqrt(3)/4] x 14^2 x 20 = ~1697.4

8 0
4 years ago
5. What is the equation of a line with a y-intercept at (0,6) and a slope of 3?
andreev551 [17]

Answer:

A

Step-by-step explanation:

You're correct. The Y intercept is the B. And 3 the slope.

8 0
4 years ago
In rectangle ABCD with side AD = 6 cm, point M is the midpoint of side
SpyIntel [72]
The triangle that is formed by AMB is a 45 45 90 triangle, so meaning the legs are equal. so in can be concluded that AD = MD, since M is the midpoint of CD, then CD = 2AD
CD = 2(6) = 12 cm

so the perimeter is of the rectangle ABCD is
P = 2l + 2w
P = 2(6) + 2(12)
P = 12 + 24
P = 26 cm
7 0
3 years ago
Read 2 more answers
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