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Furkat [3]
3 years ago
14

I’m stuck on 5-6. Please help if you could explain the answer also that would be awesome

Mathematics
1 answer:
Ghella [55]3 years ago
4 0
The answer is... #5 is ONE because theres only one way to get there
i think #6 is Infinitely many
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Match the subtraction expressions to their solutions.
iogann1982 [59]

Answer:

-27.26        -----------    -52.89 - (-25.63)

135.03        -----------     49.40 - (-85.63)

-120(2)/(3)   -----------      -96(2)/(9) - 24(4)/(9)

-15(3)/(5)      -----------      -18(1)/(5) - [-2(3)/(5)]

   

8 0
3 years ago
A shopper uses a department-store gift card to pay for 3 sweaters priced at $27 each. What is the change in the value of the gif
LenKa [72]
Well you multiply 27 by 3 to get 71 dollars
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3 years ago
John's commute time to work during the week follows the normal probability distribution with a mean time of 26.7 minutes and a s
Galina-37 [17]

A suitable probability calculator will tell you that probabilty is about 25.9%.


_____

The normalcdf function on this calculator gives an area between a lower and upper limit. If the upper limit is more than about 8 standard deviations above the mean, the 10th decimal place is unaffected. Since the standard deviation here is about 5, we need to have an upper limit that is about 40 above the mean of about 30. We have chosen 80 as a nice round number and to give a little more margin.

4 0
3 years ago
PLZ HELP WILL MARK BRAINLIEST
Fantom [35]

Answer:

  g(x) = (1/6)(x +7)^2 -8

Step-by-step explanation:

The transformation ...

  g(x) = a·f(x -h) +k

represents vertical scaling by a factor of 'a', right shift by h units, and up shift by k units. You want the function g(x) for f(x) = x^2, a = 1/6, h = -7, and k = -8. Those transformations give you ...

  g(x) = (1/6)(x +7)^2 -8

6 0
3 years ago
The outer and inner triangles are both equilateral and the circle touches all three sides of the outer triangle. If the area of
Brrunno [24]

Answer:

The area of outer Δ = 40 cm²

Step-by-step explanation:

∵ Area of the small triangle = 10 cm²

If we join the center of the circle with the 3 vertices of the inner Δ

These 3 segments are the radii of the circle

Now the inner triangle has 3 isosceles Δ their sides are r , r and s1 with vertex angle 120° ⇒ (360° ÷ 3 = 120°)

Where r is the radius of the circle and s1 is the side of the inner triangle

<em>By using cosine rule</em>

(s1)² = r² + r² - 2r²cos120 = r² + r² - 2r² (-0.5) = r² + r² + r² = 3r²

∴ s1 = r√3

∵ The radius of the circle ⊥ to the side of the outer Δ because the side of the outer Δ is a tangent to the circle

If we join a vertex of the outer Δ with the center of the circle

We will have a right angle triangle of two legs r and half s2 with angle 60° (120° ÷ 2 )between them ⇒ s2 is the side of outer Δ

∴ tan 60° = 1/2 (s2) ÷ r ⇒ √3 = 1/2 (s2) ÷ r = (s2)/2r

∴ s2 = 2r√3

∴ s2 : s1 = 2r√3 ÷ r√3 = 2 : 1

∴ The side of the outer Δ is double the side of the inner Δ

<em>By using similarity ratio</em>

A2/A1 = (s2/s1)² ⇒ A2 and A1 are the areas of outer and inner triangles

∴ A2 : A1 = (2/1)² = 4/1  

∴ A2 = 4 A1

∴ A2 = 4 × 10 = 40 cm²

5 0
3 years ago
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