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3 years ago

6th grade math help please !!

Mathematics

2 answers:

Anastasy [175]3 years ago

8 0

Answer:

The GCF of 90 and 72 is 18.

Step-by-step explanation:

All factors of 90: 1,2,3,5,6,9,10,15,18,30,45 and 90.

All factors of 72: 1,2,3,4,6,8,9,12,18,24,36 and 72.

All common factors of 90 and 72: 18, 9, 6, 3, 2, and 1.

The greatest common factor: 18.

Hopefully this helps!

shutvik [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.

Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 34, 36, 72.

Common factors: 1, 2, 3, 6, 18.

18 is the greatest common factor.

GCF = Greatest common factor.

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Please help me due in an hour

Leokris [45]

Answer:

Ok so it would be square root 1

Step-by-step explanation:

6 0

3 years ago

14 2 7 3 9=10 insert symbols

Irina-Kira [14]

14×2÷7-3+9=10

Worked it out myslef and enjoy doing math.

7 0

3 years ago

Eli invested $ 330 $330 in an account in the year 1999, and the value has been growing exponentially at a constant rate. The val

Cloud [144]

Answer:

The value of the account in the year 2009 will be $682.

Step-by-step explanation:

The acount's balance, in t years after 1999, can be modeled by the following equation.

$A(t) = Pe^{rt}$

In which A(t) is the amount after t years, P is the initial money deposited, and r is the rate of interest.

$330 in an account in the year 1999

This means that $P = 330$

$590 in the year 2007

2007 is 8 years after 1999, so P(8) = 590.

We use this to find r.

$A(t) = Pe^{rt}$

$590 = 330e^{8r}$

$e^{8r} = \frac{590}{330}$

$e^{8r} = 1.79$

Applying ln to both sides:

$\ln{e^{8r}} = \ln{1.79}$

$8r = \ln{1.79}$

$r = \frac{\ln{1.79}}{8}$

$r = 0.0726$

Determine the value of the account, to the nearest dollar, in the year 2009.

2009 is 10 years after 1999, so this is A(10).

$A(t) = 330e^{0.0726t}$

$A(10) = 330e^{0.0726*10} = 682$

The value of the account in the year 2009 will be $682.

4 0

4 years ago

Write the quadratic equation in standard form. What is the value of b 2 - 4ac?

Fittoniya [83]

B^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 4*2*(-1)
= 49 + 8
= 57

5 0

3 years ago

Write the equivalent fraction, the reduced fraction, and the decimal equivalent for 45%. Jenny solved this problem and her work

Bingel [31]

Given that we Jenny wants to equivalent fraction of 45% then convert into reduced fraction and then convert into decimal equivalent.

She has already shown her work. We just need to find the error if any.

to convert any percent value we just divide that number by 100 because percent itself means divide by 100.

Hence first step 45%=45/100 is correct.

Then she needed to convert into reduced fraction. To do that she divided numerator and denominator both by 5 and got 9/20.

step 2 is also correct.

Now she needs to convert into decimal equivalent so she divided 9 by 20 and got 4.5 while the correct answer should be 0.45

Hence she did error when converting fraction form into decimal form.

8 0

4 years ago

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