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3 years ago

Jonathan parents told him that for every 5 hours of homework or reading he completed

Mathematics

1 answer:

Murrr4er [49]3 years ago

4 0

Finish your statement... I'm anxious to help!

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If a=15 and b=6, then 9a²-48ab+64b²=?

photoshop1234 [79]

Answer:

Step-by-step explanation:

Value of 'a' = 15

Value of 'b' = 6

Simplifying the expression given in question,

$9a^{2} -48ab+64b^{2}$

$=> (3a)^{2} - 2*3a*8b+(8b)^{2}$

$=>(3a-8b)^{2}$

Putting 'a' & 'b' in above expression ,

$(3a-8b)^{2} = (3*15-8*6)^{2} = (45-48)^{2} = (-3)^{2} =9$

5 0

3 years ago

What is the distance between the points (21,-30) and (3,8)

Scilla [17]

Answer:

approximately 42.05

Step-by-step explanation:

We know that the distance formula is $\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2} }$ , so if we use (3,8) as point 2 and (21, -30) as point 1 (note that these are interchangeable), we know that

x₂=3

y₂=8

x₁=21

y₁=-30

Then, we can plug it into the formula to get $\sqrt{(3-21)^{2} +(8-(-30))^{2 }} = \sqrt{18^{2}+38^{2}}=sqrt{1769}= 42.05 (approximately)$

5 0

3 years ago

Based on the image and stated scale, what is the value of y?

GenaCL600 [577]

Answer:

2.2 inches

Step-by-step explanation:

This is because of the stated scale rate. 1/5 is equal to 20% with that 20% of 11 inches would yield 2.2 inches hope this helps :)

5 0

3 years ago

Which age group is most likely to experience stage

Ksenya-84 [330]

The most prevalent age group reporting stage fright was between 35 and 45 years of age. Wind instrument players were the group most involved (22% of those reporting stage fright).

8 0

3 years ago

Read 2 more answers

Apply the distributive property to create an equivalent expression −9⋅(5j+k)=

Dvinal [7]

Answer:

-45j - 9k

Step-by-step explanation:

Multiply -9 and 5j first to get -45j

Multiply -9 and k to get -9k

4 0

3 years ago