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Sergio039 [100]
2 years ago
14

Grant and seventh grade students to name their favorite flavor of ice cream. He won that three out of every eight students prefe

r chocolate to vanilla. If there are 280 students how many prefer vanilla
Mathematics
1 answer:
Vesna [10]2 years ago
4 0
It would be 105 students because you would divide the 280 students into 8 and then get 35, then multiply that by 3 representing the 3/8s of the students
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Solve for x and y<br><br> need help fast.
Kisachek [45]

Answer:

(x, y) = (4, -8)

Step-by-step explanation:

2x - 2y = 24 $\Rightarrow$ 4x - 4y = 48

4x + 7y = -40

Subtracting the two equations from each other, we get:

(4x + 7y) - (4x - 4y) = -40 - 48

11y = -88

y = -8.

Then, 2x - 2*(-8) = 24. So, 2x + 16 = 24 $\Rightarrow$ 2x = 8$\Rightarrow$x = 4

4 0
2 years ago
Read 2 more answers
Solve the following equation. *<br> x2 – 13x – 30 = 0<br> What’s the answer
Basile [38]
Sorry for the late response if u still don’t got it the answer it is X=-30
5 0
3 years ago
Very confused need help!
aniked [119]

Answer:

\frac{\left(y-1\right)^2}{64}-\frac{\left(x-3\right)^2}{36}=1 is the right option.

The graph is also attached below.

Step-by-step explanation:

\frac{\left(y-1\right)^2}{64}-\frac{\left(x-3\right)^2}{36}=1

As

Hyperbola\:standard\:equation

\frac{\left(y-k\right)^2}{a^2}-\frac{\left(x-h\right)^2}{b^2}=1\:\mathrm{\:is\:the\:standard\:equation\:for\:an\:up-down\:facing\:hyperbola}

\mathrm{with\:center\:}\textbf{\left(h,\:k\right)},\:\mathrm{\:semi-axis\:\textbf{a}\:and\:semi-conjugate-axis\:\textbf{b}.} \left(h,\:k\right) , semi\:-\:axis\:a\:and\:semi\:-\:conjugate\:-\:axis\:b.\:

\mathrm{Rewrite}\:\frac{\left(y-1\right)^2}{64}-\frac{\left(x-3\right)^2}{36}=1\:\mathrm{in\:the\:form\:of\:a\:standard\:hyperbola\:equation}

\frac{\left(y-1\right)^2}{8^2}-\frac{\left(x-3\right)^2}{6^2}=1

\mathrm{Therefore\:Hyperbola\:properties\:are:}

\left(h,\:k\right)=\left(3,\:1\right),\:a=8,\:b=6

Therefore, \frac{\left(y-1\right)^2}{64}-\frac{\left(x-3\right)^2}{36}=1 is the right option.

The graph is also attached below.

Keywords: hyperbola, graph

Learn more about hyperbola from brainly.com/question/12703879

#learnwithBrainly

8 0
2 years ago
Vickie conducts a survey of home builders to determine the average cost of building a new home. She samples 10 home builders who
lesya692 [45]

Complete question is;

Vickie conducts a survey of home builders to determine the average cost of building a new home. She samples 10 home builders who are building in the town in which she lives. Under which conditions will her sample be a representative sample? Select two options:

A) The builders were chosen at random.

B) The population included only builders who build in Vicki’s town.

C) The population included builders who build homes in any town.

D) The population included builders who do not build homes in Vicki’s town.

E) The builders were referred to Vicki by the realtor who will be selling the houses.

Answer:

Options A & B are correct.

A) The builders were chosen at random.

B) The population included only builders who build in Vicki’s town.

Step-by-step explanation:

Looking at the question, we see that Vickie wanted to determine the cost of building a new home in the town in which she lived. Now, she sampled builders who are building in the town in which she lives and thus, it makes the sample more representative.

However, the random method of choosing the builders would help to remove any lingering biases that may arise.

Thus, we can conclude that the builders were chosen at random and that it included only those who build in her town.

Thus, options A & B are correct.

6 0
3 years ago
A city has a population of 245,600 which is 110% of the population from the previous year. What was the population the previous
MrMuchimi
<h2>Answer:</h2><h2>The city population last year = 2233 approximately</h2>

Step-by-step explanation:

The current population of the city = 245,600

Rate of increase = 110 %

The population in previous year = ?

Let x be the population of previous year

x(110%) = 245600

x = \frac{245600}{110}

= 2232.7

The city population last year = 2233 approximately

4 0
2 years ago
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