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3 years ago

HELP !!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Kay [80]3 years ago

6 0

djdkdndjdndkxjxdjndnsnsnddddknsndkxxodnd

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Natalie wants to have $9000 in her saving account in 5 years. the account earn 3% interest compounded monthly. how much does she

puteri [66]

I think that the answer should be 270.

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4 years ago

The average height of 4 children is (15h-3). Two more children join the group with heights of (10h+46) centimeters and (14h-16)

oksian1 [2.3K]

Answer: 123.5 centimeters

Step-by-step explanation:

Let sum of observations be S and number of observations be n.

Average A= $\frac{\text{S}}{\text{n}}$

The average height of 4 children is (15h-3)

$(15h-3)=\frac{S}{4}\\\Rightarrow\ S=4(15h-3)\\\Rightarrow\ S=60h-45$

Also, when two more children join the group with heights of (10h+46) centimeters and (14h-16) centimeters the sum of heights of 6 children will be

$S+(10h+46)+(14h-16)=60h-45+10h+46+14h-16=84h-107$

Now, Average height of 6 students= $\frac{84h-15}{6}$

At h=9

Average height of 6 students= $\frac{84(9)-15}{6}=\frac{741}{6}=123.5\ centimeters$

3 0

4 years ago

Sin(cos^-1 x) how to solve?

tatiyna

Answer:

$sin(cos^{-1}x)=\sqrt{1-x^2}$

Step-by-step explanation:

let us assume

$cos^{-1} x=\theta\\x=cos\theta\\$

now

$sin(cos^{-1}x)$ can be written as $sin\theta$

we know $sin^2\theta+cos^2\theta=1$

so $sin^2\theta=1-cos^2\theta$

$sin\theta=\sqrt{1-cos^2\theta}$

now from above equation we can say that

$sin\theta=\sqrt{1-x^2}$

$sin(cos^{-1}x)=\sqrt{1-x^2}$

7 0

3 years ago

Find the distance between the points 5 , 3 and -6 , 3 .

just olya [345]

(5, 3) (-6, 3)
The slope is 0 Slope = m = (Y2 -Y1) ÷ (X2 -X1) (Y2 -Y1)=0
SO, the distance is just the difference in the x values.
distance = 5 --6 = 11

7 0

3 years ago

6. A tank is being filled with water. The graph shows the

grandymaker [24]

Answer:

30 gallons per minute

Step-by-step explanation:

the answer is 30 gallons per minute

3 0

3 years ago