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Gnoma [55]
3 years ago
11

Solve the problems.

Mathematics
1 answer:
Sever21 [200]3 years ago
5 0

Answer:

y=-3x+18

Step-by-step explanation:

Let the amount of flour left be y.

Initial amount of flour = 18 cups

Cups used for 1 batch of muffins = 3

∴ Cups used for x batches = 3\times x=3x

Amount left in the container is given as:

y= \textrm{Initial amount - Amount used for x batches}\\y=18-3x\\y=-3x+18

Therefore, the equation to show how  much flour is left in the container after x batches of  muffins is y=-3x+18.

The graph of it is shown below.

Find the x and y intercepts and then join the line.

At x intercept, y = 0

0=-3x+18\\3x=18\\x=6

So, x intercept is (6,0)

At y intercept, x = 0,

y=-3(0)+18\\y=18

So, y intercept is (0,18)

Join these two points to plot the graph.

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25/50=1/2=50/100=50%

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6 0
4 years ago
Identify the kind of sample that is described.
laila [671]

Answer:

Cluster sampling

Step-by-step explanation:

The kind of sampling described here is cluster sampling. In the cluster sampling method, a population is divided into clusters. Some of these clusters would then be randomly selected as samples. Each cluster is a mini representation of the entire population. The researcher in cluster sampling studies the whole clusters.

In this question we have a cluster of colleges that have been selected and a poll of all employees in these clusters.

This makes the answer cluster sampling

3 0
3 years ago
Carey bought 8 tickets for $52 how many tickets could she buy for $90?
OverLord2011 [107]

Answer:

73.13

Step-by-step explanation:

I think this <em><u>might</u></em><em><u> </u></em>be the right answer.

6 0
3 years ago
Read 2 more answers
Multiply<br> 7x(x^- x+2)
Pie

Rewrite (7x−2) 2 (7x-2) 2 as (7x−2) (7x−2) (7x-2) (7x-2).

(7x−2) (7x−2) (7x-2) (7x-2)

Expand (7x−2)(7x−2)(7x-2)(7x-2) using the FOIL Method.

Apply the distributive property.

7x (7x−2) −2 (7x−2) 7x (7x-2)-2 (7x-2)

Apply the distributive property.

7x(7x)+7x⋅−2−2(7x−2)7x (7x)+7x⋅-2-2(7x-2)

Apply the distributive property.

7x(7x)+7x⋅−2−2(7x)−2⋅−27x(7x)+7x⋅-2-2(7x)-2⋅-2

Simplify and combine like terms.

Simplify each term.

Multiply xx by xx.

7⋅7x2+7x⋅−2−2(7x)−2⋅−27⋅7x2+7x⋅-2-2(7x)-2⋅-2

Multiply 77 by 77.

49x2+7x⋅−2−2(7x)−2⋅−249x2+7x⋅-2-2(7x)-2⋅-2

Multiply −2-2 by 77.

49x2−14x−2(7x)−2⋅−249x2-14x-2(7x)-2⋅-2

Multiply 77 by −2-2.

49x2−14x−14x−2⋅−249x2-14x-14x-2⋅-2

Multiply −2-2 by −2-2.

49x2−14x−14x+449x2-14x-14x+4

Subtract 14x14x from −14x-14x.

49x2−28x+4

6 0
3 years ago
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