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Aleks04 [339]
3 years ago
7

6) Find b(10) in the sequence given by b(n) = -5 + 9(n-1). b(10) =?

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

76

Step-by-step explanation:

1. Replace n with 10. The equation will look like:

-5+9(10-1)

2. Remember PEMDAS! The first step in solving the equation is solving whatever is in the parenthesis:

-5+9(9)

3. The next step is exponents, but since there aren't exponents in the equation, we move to multiplication and division. The equation should now look like this:

-5+81

4. Now we move on to addition and subtraction; add the two numbers!

-5+81=76

There's your answer!! Hope this helped :)

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kakasveta [241]
1/10.
2/5 is equal to 4/10
4/10 divided by .4 is .1
so its 1/10
6 0
4 years ago
Is my answer correct?
just olya [345]

Yes you are correct 20% of 150 is 30.

3 0
3 years ago
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Maria thinks of a number double it and add 5 answer is 21 write as an equation in X and solve it to find Maria's number​
lys-0071 [83]

Answer:

The number is 8

Step-by-step explanation:

<em>2x +5 =21 </em>

2x= 21-5

2x=16

2x/2=16/2

x=8

To check

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the price of a lamp is $18.50 cents the sales tax is 4% which is the total price including the sales tax?​
Semenov [28]

Answer:

The answer is $19.24

Step-by-step explanation:

$18.50/100

0.185 = 1%

0.185 x 4 = 0.74

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7 0
3 years ago
I need help with both of these someone please help me . you’ll get 20 brainly points !!
Orlov [11]

Answer:

First question: 42cm^2

Second question:

whole figure: 150 cm^2

blue part: 96cm^2

white part:54cm^2

Step-by-step explanation:

Lets do math:

look you gave me alot to do but lets go:

Question 1:

lets find the area of the whole rectangle without the parts taken away.

6*10-60

lets put that away for a little bit and move onto the empty space that we have to take away from the rectangle to get this shape.

im now going to subtract 2 from 10 to get 8. I did this to find out the a length

8*3=24

18 is the area of the shape that we have to subtract from the big rectangle

lets now take out the area we put away for a little while.

60-18=42

so 42 is the area of the first shape.

Question #2:

This problem needs multiple answers so lets get started.

first we need to find the area of the big rectangle.

10*15=150

lets put that away for a little bit.

now lets find the area of the little rectangle

6*9=54

to find the blue we have to subtract 54 from 150 which is 96

so now we have this:

area of the whole figure:150

area of the shaded rectangle inside (white): 54

area of the shaded rectangle (blue): 96

phew that was a lot of typing

the end

8 0
4 years ago
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