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3 years ago

Can you help me please?! :)

Mathematics

1 answer:

UkoKoshka [18]3 years ago

3 0

The answer is A
start by isolating the y variable
the rest of the work is shown here

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A small theater had 9 rows of 25 chairs each. An extra 7 chairs have just been brought in. How many chairs are in the

Alchen [17]

Answer:

232

Step-by-step explanation:

9 x 25 = 225 225 + 7 = 232

another way to find it

9 x 20 = 180 9 x 5 = 45 180 + 45 = 225 + 7 = 232

8 0

3 years ago

Please help I'm struggling so bad right now

Over [174]

Answer:

y = m x + b is the standard form of a straight line

m = (y2 - y1) / (x2 - x1) = (10 - (-8)) / (-3 - 0) = 18 / -3 = -6

When x = 0 y = b from the equation for a line

y = - 8

So our equation is

y = -6 x - 8

As a check let x = -2 then

y = (-6 * -2) - 8 = 12 - 8 = 4

Check on the graph to verify that this equation holds

8 0

3 years ago

Help Me With The Red Marking On It

Nadusha1986 [10]

The answer is A you times base times height divided by 2

3 0

4 years ago

(I typed it wrong the 1st time)

Doss [256]

<h3>Answer: 540</h3>

===============================================================

Explanation:

We have the arithmetic sequence {15, 18, 21, ...} and we want to add up the first n = 15 terms.

The first term is a = 15 and the common difference is d = 3

Plug these values into the arithmetic sum formula below

S = 0.5*n*(2*a + d(n-1))

S = 0.5*15*(2*15 + 3*(15-1))

S = 7.5*(30 + 42)

S = 7.5*(72)

S = 540

There are 540 seats total in the theater.

----------------

The slower less efficient way to do this problem would be to list out the first 15 terms by hand like so

{15,18,21,24,27,30,33,36,39,42,45,48,51,54,57}

Then adding those fifteen terms up gives us

15+18+21+24+27+30+33+36+39+42+45+48+51+54+57 = 540

This helps confirm we have the correct answer.

6 0

3 years ago

Every time Mary bakes a batch of brownies, she uses 15 cup of chocolate. If she has 8/10 cup(s) of chocolate remaining, how many

igor_vitrenko [27]

Given :

1 batch of brownies required 15 cup of chocolate.

To Find :

If she has 8/10 cup of chocolate remaining, how many batches of brownies can Mary make.

Solution :

Ratio of cups to batch is :

$R=\dfrac{15}{1}$

Let , batch produced from 8/10 cup of chocolate is x.

So ,

$\dfrac{\dfrac{8}{10}}{x}=\dfrac{15}{1}\\\\x=\dfrac{8}{10\times 15}\\\\x=0.053\ batches$

Therefore , she can make 0.053 of a batch.

Hence , this is the required solution.

3 0

3 years ago