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2 years ago

I’ve been stuck in this for almost 20 minutes help :/

Mathematics

1 answer:

Alja [10]2 years ago

5 0

Answer:

pi/2 units to the left

Step-by-step explanation:

the formula is y = cos(x-b) so when b is negative, the formula will show a plus sign because minus negative is adding. this means the graph is shifted -pi/2 to the right which is really pi/2 to the left

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Jenny peddled her bike 11 miles in 45 minutes. If she traveled at the same speed,how far would she travel in 225 minutes?

Korolek [52]

Answer:

55 miles

Step-by-step explanation:

11 miles = 45 min

speed = distance/time

speed = 11/45

speed = 0.2444 miles/min

for 225 min, speed is same

distance = speed * time

= 11/45 * 225

=55 miles

4 0

3 years ago

Which representation does NOT represent y as a function of x?

siniylev [52]

<h3>Answer: Choice C</h3>

Why isn't choice C a function? It's because we have the input x = 4 lead to more than one output at the same time (y = 5 and y = -5). A function must have all allowed inputs lead to exactly one output.

The diagram for choice C shows we have the points (4,5) and (4,-5). If we plotted those two points, then a vertical line forms, which will show this relation fails the vertical line test.

Choices A, B, and D do not have this happen where a certain input leads to multiple outputs at once; therefore, these are all functions. For the tables A and D, note there aren't any repeated x values. If you were to convert choice C into table form, then you would have the x value 4 repeat itself.

7 0

3 years ago

Read 2 more answers

Multiply eight and eighty-eight hundredths by two and three tenths

zimovet [89]

Answer:

20.424

Step-by-step explanation:

Given words can be written as

Eight and eighty-eight hundredths = (8+ $\frac{88}{100}$ )

= $\frac{800+88}{100}$

= 8.88

Two and three tenth = (2+ $\frac{3}{10}$ )

= $\frac{20+3}{10}$

= 2.3

Now multiply them

i.e 8.88 × 2.3 = 20.424

So 20.424 is the Answer

7 0

3 years ago

The y-intercept in the linear equation −2y−4x−6=0 is _[blank]_. will give brainliest

Ronch [10]

Answer:

-3 is the value of the location where the line crosses the y-axis,and is commonly referred in the slope-intercept form of a line "the intercept". Now it may be your teacher expects you to answer this as the point on the plane where the y-intercept occurs, and that should be the point (0, -3). Make sure you follow your teacher's notation.

Step-by-step explanation:

Re-write the equation given in slope=intercept form by isolating the variable "y" on one side of the equation and expressing the rest in slope*x + y-intercet form:

$-2y-4x-6=0\\-4x-6=2y\\y=-2x-3\\$