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3 years ago

Need help on num 15

Mathematics

1 answer:

Yakvenalex [24]3 years ago

8 0

Answer:

Step-by-step explanation:

D's equation shows y equals 7.8 times x. 7.8 is the unit rate.

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Solve the following inequality algebraically:

Bogdan [553]

Answer:

1 less-than x less-than 2

0 less-than x less-than 3

1 greater-than x greater-than 2

0 greater-than x greater-than 3

3 0

3 years ago

I need help and show work

Mama L [17]

A = 22 x 60 = 1320

B = 60 x 60 = 3600

Hope this helps. I'm not smart ;w;

6 0

3 years ago

Hay 12 nadadores en una carrera de estilo libre, con premios para los primeros, segundos y terceros lugares. ¿De cuántas maneras

guajiro [1.7K]

Answer:

The prizes can be given in 1320 ways.

Los premios se pueden otorgar en 1320 maneras.

Step-by-step explanation:

The order in which the swimmers are ranked is important. That is, A, B and C is a different finish than C, B and A. So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

In this question:

3 prizes for 12 swimmers. So

$P_{(12,3)} = \frac{12!}{(12-3)!} = 1320$

The prizes can be given in 1320 ways.

Los premios se pueden otorgar en 1320 maneras.

4 0

3 years ago

Given the diagram, a supplement to

Likurg_2 [28]

Given:

The figure of a quadrilateral ABCD.

To find:

The supplement of angle ABC.

Solution:

We know that, two angles are called supplementary angles if their sum is 180 degrees.

$\angle ABC+\angle BAC=110^\circ+40^\circ$

$\angle ABC+\angle BAC=150^\circ\neq 180^\circ$

So, $\angle BAC$ is not a supplement of $\angle ABC$ .

$\angle ABC+\angle ADC=110^\circ+90^\circ$

$\angle ABC+\angle ADC=200^\circ$

So, $\angle ADC$ is not a supplement of $\angle ABC$ .

$\angle ABC+\angle DAB=110^\circ+(40+30)^\circ$

$\angle ABC+\angle DAB=110^\circ+70^\circ$

$\angle ABC+\angle DAB=180^\circ$

So, $\angle DAB$ is a supplement of $\angle ABC$ .

In the same way $\angle ABC+\angle BDC\neq 180^\circ$ .

So, $\angle BDC$ is not a supplement of $\angle ABC$ .

Therefore, the correct option is C.

5 0

3 years ago

Express the ratio 16:9 as a ratio to 1

Bumek [7]

I think it's 1.77777777778(7 is repeating) to1.
16/9=1.77..............8

8 0

3 years ago