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disa [49]
3 years ago
12

Using Ratios"a

Mathematics
1 answer:
Margaret [11]3 years ago
5 0
In terms of better deal, we know that we want less money per hour.  to find this we compute danny's cost per hour and martin's cost per hour of lessons and compare the 2.  
Danny: 35/3 = 11.67 dollars/hour
martin: 24/2 = 12 dollars/hour
this means Danny has the better deal since his cost per hour is lower.

note that we could have also computed how many hours of lesson per dollar and in that cause the bigger number would be considered the better deal.
Danny: 3/35 = 0.086
martin: .083
this means danny has the better deal (like before!) because you get more hours of swimming lessons with 1 dollar.

although i think to choose a swim coach we have to look at his abilities as well not just how much he charges XD...sorry i got carried away.
You might be interested in
Which properties are necessary to claim that the two prisms are congruent? Check all that apply. The lengths of corresponding ed
Juli2301 [7.4K]

Answer:

The true statements include

- The lengths of corresponding edges are in a 1:1 ratio.

- The volumes are equal.

- The base areas are equal.

- The prisms have the same height.

The false statements include;

- Corresponding angles have different measures.

- Corresponding faces are not congruent.

Step-by-step explanation:

In geometry, congruence of two figures or structures indicate that the two figures are of the same size and shape

- Angles are congruent when they are the same size (in degrees or radians).

- Sides are congruent when they are the same length.

So, for congruent prisms, the corresponding angles are expected to be of the same sizes and the corresponding sides are expected to be of the same length.

Taking each of the statements one at a time

- The lengths of corresponding edges are in a 1:1 ratio.

Since we have concluded that the corresponding sides of congruent structures/figures/prisms are of the same length. This statement has to be true.

- The volumes are equal.

Since all the corresponding sides are of the same length and the shapes are similar, the volume has to be equal. This statement is true.

- Corresponding angles have different measures.

We have postulated above that corresponding angles of congruent structures/figures/prisms are of the same sizes or measures. So, this statement is false.

- Corresponding faces are not congruent.

Since we have concluded that the corresponding sides of congruent structures/figures/prisms are of the same length. Corresponding faces have to be congruent then. So, this statement is false.

- The base areas are equal.

Since all the corresponding sides are of the same length and the shapes are similar, the base areas are equal. This statement is true.

- The prisms have the same height.

Since all the corresponding sides are of the same length and the shapes are similar, the prisms have to have the same height because the heights are corresponding sides. This statement is true.

Hope this Helps!!!

8 0
3 years ago
Read 2 more answers
A thumbtack that is tossed can land point up or point down. The probability of a tack landing point up is 0.2. A simulation was
sweet-ann [11.9K]

Answer:

Option C: 0.28

Step-by-step explanation:

This is a binomial probability distribution problem.

Now, we want to find the probability that at least 2 thumbtacks land pointing up when 5 thumbtacks are tossed. This is written as;

P(X ≥ 2) = P(2) + P(3) + P(4) + P(5)

From the histogram;

P(5) = 0.02

P(4) = 0.02

P(3) = 0.05

P(2) = 0.19

Thus;

P(X ≥ 2) = 0.19 + 0.05 + 0.02 + 0.02

P(X ≥ 2) = 0.28

8 0
3 years ago
Read 2 more answers
Find the value of x in each case:
gayaneshka [121]

Answer:

45°

Step-by-step explanation:

The sum of a triangle's angles is 180°.

Let's take the triangle FIG and try to express its angles in function of x.

● < F :

< F +3x = 180 => <F = 180 -3x

● < G :

IK and GH are paralell. IG is crossing them.

x and G are interior alternate angles so they have the same size.

< G = x

● < I :

We khow that < F = 180 -3x and < G = x

< I = 180-(< F + < G )

< I = 180 - ( 180-3x +x)

< I = 180 -(180-2x)

< I = 180 -180 +2x

< I = 2x

■■■■■■■■■■■■■■■■■■■■■■■

< F = 180 -3x

< G = x

< I = 2x

< I + > I + x + 2x = 360

2x + 180-x +3x = 360

4x + 180 = 360

4x = 180

x = 45°

●●●●●●●●●●●●●●●●●●●●●●●

Let's verify :

< F = 180 - 3*45 = 45 °

<G = x = 45°

< I = 2x = 90°

90° +45°+45° = 180°

So it's true.

4 0
3 years ago
Examine the diagram, and answer the question.
ELEN [110]

9514 1404 393

Answer:

  11.7

Step-by-step explanation:

GeoGebra can not only draw the picture, it can answer the question. The approximate distance between the points is about 11.7 units.

__

The distance formula is used for this:

  d = √((x1 -x1)² +(y2 -y1)²)

  d = √((-4-2)² +(-3-7)²) = √(36 +100)

  d = √136 ≈ 11.7

_____

Once you find that the distance is about √136, you know it is more than 11 (11² = 121) and less than 12 (12² = 144). The only answer choice that makes any sense is 11.7.

4 0
3 years ago
150 divided by 10% pls :)
vlabodo [156]

Answer:

1500

Step-by-step explanation:

i typed it into a calculator

5 0
3 years ago
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