2 years ago

If y = -x² + 14x + 7 , then x = 10 is a counterexample for which conjecture?

Mathematics

1 answer:

Misha Larkins [42]2 years ago

6 0

Answer:

The correct answer is B

Step-by-step explanation:

If we plug in x=10 to the equation, we get y=47

Since y is positive, A is not an counterexample

Since y is a function of x, C is not an counterexample

Since the graph of y is a parabola, D is not an counterexample

Hope this helped and mark as brainliest!

You might be interested in

If y=14 when x=20, find x when y=3.5

Kruka [31]

I hope this helps you

when y=14 x=20

y=3,5 x=?

?.14=20.3,5

?=20.3,5/14

?=5

7 0

2 years ago

Latoya needs 2 gallons of juice to make a fruit punch for an event, but she only has a measuring cup. She knows there are 4 quar

n200080 [17]

Latoya would need 32 cups of juice to make 2 gallons.

7 0

2 years ago

Read 2 more answers

Emily has 7 cups of water in a jug.If she drinks 2/3 of a cup every hour.How long would it take her to drink the whole jug

zepelin [54]

It would take her 10.5 hours to drink the whole jug.

Step-by-step explanation:

Given,

Cups of water in jug = 7

Water drunk every hour = $\frac{2}{3}$ of cup

Let,

x be the number of hours.

According to given statement;

$\frac{2}{3}x=7$

Multiplying both sides by $\frac{3}{2}$

$\frac{3}{2}*\frac{2}{3}x=7*\frac{3}{2}\\x=\frac{21}{2}\\x=10.5$

It would take her 10.5 hours to drink the whole jug.

Keywords: fractions, multiplication

Learn more about fractions at:

#LearnwithBrainly

8 0

2 years ago

6 = a divided by 4 + 2

lyudmila [28]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Model the following situation with an equation or inequality statement.

olganol [36]

Answer:

2x=1

Step-by-step explanation:

Use x for "a number"

x times 2 = 1

2x=1

which solves for 0.5 or 1/2

3 0

2 years ago