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3 years ago

Describe and correct the error.

Mathematics

1 answer:

jolli1 [7]3 years ago

5 0

Area for a triangle =base • Height/2
So the error is they forgot to divide by two.
A=20(9)/2=90ft^2.

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Write an equation that models this situation.

Nimfa-mama [501]

Answer:

Step-by-step explanation:

the ideal way to put the equation would be x= 6 x 8 but since that is not an option B is the answer. the keyword is "each" that allows you to know that you will be multiplying those to numbers.

so the only one that allows you to multiply 6 and 8 is B when you multiply 6 to the other side.

7 0

3 years ago

A small dog eats 3/4 of a cup of dog food twice a day. Using d for the numbers of days and f for the amount of food write an equ

rosijanka [135]

Answer:

f = food variable

d = number of days

Equation: f = 1.5d

6 0

2 years ago

In order to become a member of a library, there is a $40 startup fee and a $2 monthly

Anon25 [30]

Answer:

1ST ANSWER IS RIGHT YOUR WELCOME

7 0

2 years ago

Write a subtraction fact that will give the same difference as 15-7

ASHA 777 [7]

15-7=8
solutions could be:
10-2=8
18-10=8
9-1=8
take your pick!

4 0

3 years ago

Read 2 more answers

Identify the 8th term of the given geometric sequence. 1/2, 2, 8, 32,...

IrinaK [193]

<h3>Geometric sequence.</h3>

A geometric sequence goes from one term to the next by always multiplying or dividing by the constant value except 0. The constant number multiplied (or divided) at each stage of a geometric sequence is called the common ratio (r).

We have:

$a_1=\dfrac{1}{2}\\\\a_2=2\\\\a_3=8\\\\a_4=32\\\vdots$

Find the common ratio:

$\boxed{r=\dfrac{a_n}{a_{n-1}}}\Rightarrow r=\dfrac{2}{\frac{1}{2}}=\dfrac{8}{2}=\dfrac{32}{8}=...\\\\\boxed{r=4}$

<h3>The formula of the n-th term of a geometric sequence:</h3>

$\boxed{a_n=a_1\cdot r^{n-1}}$

Substitute:

$a_1=\dfrac{1}{2},\ r=4,\ n=8\\\\a_8=\dfrac{1}{2}\cdot4^{8-1}=\dfrac{1}{2}\cdot4^7=\dfrac{1}{2}\cdot16384\\\\\huge\boxed{a_8=8192}$

<h3>Method step by step:</h3>

$a_4=32,\ r=4\\\\a_5=a_4\cdot r\Rightarrow a_5=32\cdot4=128\\\\a_6=a_5\cdot r\Rightarrow a_6=128\cdot4=512\\\\a_7=a_6\cdot r\Rightarrow a_7=512\cdot4=2048\\\\a_8=a_7\cdot r\Rightarrow a_8=2048\cdot4=8192$

3 0

2 years ago