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cricket20 [7]
3 years ago
7

HELP ME PLEASE RIGHT ANSWERS ONLYYY PLEASE

Mathematics
1 answer:
forsale [732]3 years ago
8 0

The correct answer is

F. x = 8

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Jordan’s class has 30 boys. If the students in his class, 60% are girls. How many girls are in Jonathan’s class?
aev [14]

There are 45 girls in Jonathan's class.

4 0
3 years ago
A coin and a die is rolled. What is the probability of a head and a 3?
saw5 [17]

Answer:

1/6

Step-by-step explanation:

The probability of <em>only</em> a heads on a coin is 1/2, and the probability of <em>only</em> a 3 on a die is 1/6. Multiply them together, and you get 1/6.

6 0
3 years ago
Ship A and Ship B are 120 km apart when they pick up a distress call from another boat. Ship B estimates that they are 70 km awa
oksian1 [2.3K]

Answer:

147.5 km and 64.4 km

Step-by-step explanation:

a=120  km

b=70  km

β=28 degrees ( ∘)

 

b^2=(a^2)+(c^2)−2ac*cosβ  

70^2 =(120^2 )+(c^2)−2⋅ 120⋅ c⋅ cos(28∘ )  

 (c^2 ) −211.907c+9500=0  

 

note p, q, and r are replacement variables in the Pythagorean theorem since a, b, and c are already in use

p=1;q=−211.907;r=9500  

D=(q^2 ) −4pr=(211.907^2 )−4⋅1⋅9500=6904.75561996  

D>0  

 

c_{1,2}  =   (−q±  \sqrt{D}   )/2p=(211.91±\sqrt{6904.76})/2

​c_{1,2}  =105.95371114±41.5474295834  

(c_{1}−147.501140726)(c_{2}−64.4062815596)=0

c_{1}=147.501140726  

c_{2}=64.4062815596  

5 0
3 years ago
-5+|-15÷(-5) |2(-5) ​
pav-90 [236]

Answer:

The value of this expression is -35.

Step-by-step explanation:

Let's use the order of operations (PEMDAS), to solve this problem.

-5+|-15/-5|*2*(-5)\\-5+3*-10\\-5+-30\\-35

In conclusion, the value of this expression is -35. Hope this helped :D

7 0
3 years ago
If z^2+1/z^2=11 , find the value of z^3-1/z^3,using only the positive value of z-1/z
vredina [299]
Hello,

Let's assume

t=z- \dfrac{1}{z} \\\\&#10;&#10;t^2=z^2-2+ \dfrac{1}{z^2}= 11-2=9==\ \textgreater \ t=3\\\\&#10;&#10;t^3=z^3-3z^2* \dfrac{1}{z} +3z* \dfrac{1}{z^2} - \dfrac{1}{z^3} \\\\&#10;=z^3 - \dfrac{1}{z^3} -3(z-\dfrac{1}{z})\\\\&#10;z^3 - \dfrac{1}{z^3}=t^3+3t=3^3+9=27+9=36&#10;&#10;&#10;
7 0
3 years ago
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