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andre [41]
3 years ago
8

How to solve these problems

Mathematics
2 answers:
kodGreya [7K]3 years ago
8 0

Answer:

\frac{\frac{14}{7}\cdot \:3+9}{9\left(\frac{18}{6}\div \frac{21}{3}\right)}

\frac{14}{7} =2\\=2\cdot \:3+9

=6+9

=15

9\left(\frac{18}{6}\div \frac{21}{3}\right)

\frac{18}{6} =3

\frac{21}{3} =7

9(3\div 7)=\frac{3}{7}

=9\cdot \frac{3}{7}=\frac{27}{7}

\frac{27}{7} =3\frac{6}{7}

=\frac{15}{3\frac{6}{7}}

-------------

\frac{31}{\:7}+\frac{28}{13}

LCM\: of \: 7 \:and \: 13 :91

=\frac{403}{91}+\frac{196}{91}

=\frac{403+196}{91}

=\frac{599}{91}

--------------

-3-21\cdot \frac{66}{22}

\frac{66}{22} =3

=-3-21\cdot \:3

21\cdot \:3=63

=-3-63

=-66

<u>OAmalOHopeO</u>

Sunny_sXe [5.5K]3 years ago
5 0

Answer:

well i am on mobile so o cant do step by step process bbut i can give you answer

Step-by-step explanation:

answers,

1. 35/9 (3.88)

2. 599/91 (6.58)

3. -66

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What are the range values of the function f (x ) = 3x + 4 for the domain values {-5, -1, 0, 2, 7}?
Airida [17]

Answer:

Range values are:

{-11, 1, 4, 10, 25}

Step-by-step explanation:

Domain values are the possible x values that can be entered into the function, or the inputs.  Range values are the y values, or the outputs. By inserting every value in the set into the function, we get the outputs (y values)

-15 + 4 = -11

-3+4 = 1

0 + 4 = 4

6 + 4 = 10

21 + 4 = 25

Remember to put them in order.

7 0
3 years ago
Mr. Levy has a budget of $18,000. Uniforms for the marching band cost $315 each, and he needs 62 uniforms. He says, "Since 60x$3
svetoff [14.1K]

Answer:

No. See explanation  below.

Step-by-step explanation:

No.

Since 60 × $300 = $18,000, he would be exactly at budget if he needed 60 uniforms and if each uniform cost $300, but he needs more than 60 uniforms, and each uniform costs more than $315, so the total cost is definitely more than $18,000.

7 0
3 years ago
Read 2 more answers
To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
Maurinko [17]
He used distributive property 
7 0
3 years ago
A basketball player has made 6060​% of his foul shots during the season. Assume the shots are independent. ​
motikmotik

Answer:

a) 2.5 shots

b) 59.4 shots

c) 4.87 shots

Step-by-step explanation:

Probability of making the shot = 0.6

Probability of missing the shot = 0.4

a) The expected number of shots until the player misses is given by:

E(X) = \frac{1}{P(X)}=\frac{1}{0.4}  \\E(X) = 2.5\ shots

The expected number of shots until the first miss is 2.5

b) The expected number of shots made in 99 attempts is:

E=99*0.6\\E=59.4\ shots

He is expected to make 59.4 shots

c) Let "p" be the proportion shots that the player make, the standard deviation for n = 99 shots is:

s=\sqrt{n*p*(1-p)}\\ s= 4.87\ shots

The standard deviation is 4.87 shots.

7 0
3 years ago
Particle 1 of charge q1 �� ��5.00q and particle 2 of charge q2 �� ��2.00q are fixed to an x axis. (a) as a multiple of distance
Naya [18.7K]

<span>Assuming that the particle is the 3rd particle, we know that it’s location must be beyond q2; it cannot be between q1 and q2 since both fields point the similar way in the between region (due to attraction). Choosing an arbitrary value of 1 for L, we get </span>

<span>
k q1 / d^2 = - k q2 / (d-1)^2 </span>

Rearranging to calculate for d:

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<span> d^2-2d+1 = 0.4d^2 </span>
0.6d^2-2d+1 = 0  
d = 2.72075922005613 
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<span>
We pick the value that is > q2 hence,</span>

d = 2.72075922005613*L

<span>d = 2.72*L</span>

3 0
3 years ago
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