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4 years ago

Find the sum: 2 + 7 + 12 + 17 + ...... to 19 terms. .

Mathematics

1 answer:

Leya [2.2K]4 years ago

5 0

893

Filler so I can post this

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Two pens are selected at random from a pen stand containing three blue and two black pens. The table and the relative-frequency

HACTEHA [7]

The probabilty of picking a blue pen is one higher than picking a black pen

3 0

3 years ago

4. A group of 5 people can do a piece of work in 6 hours. Calculate the time a group of 8 people,

wolverine [178]

Answer:

4.8 hours

Step-by-step explanation:

6 hours = 360 minutes (6x60)

360/5 = 72 (minutes per person worked)

72/2= 36 (person working at half productivity)

36x 8= 288 (total minutes of 8 people working at half productivity)

288/60= 4.8 (cover minutes back to hours)

3 0

3 years ago

Determine whether the equation defines y as a function of x. x+y=9 and x^2+y^2=1 and x=y^2

Murrr4er [49]

Answer:

Function: $x+y=9$

Not Function: $x^2+y^2=1$ and $x=y^2$

Step-by-step explanation:

Given

$x+y=9$

$x^2+y^2=1$

$x=y^2$

Required

Determine if $y$ is a function of $x$

Solving x+y=9

$x+y=9$

Make y the subject of formula

$y = 9 - x$

Hence; y is a function of x

Solving $x^2+y^2=1$

$x^2+y^2=1$

Subtract x² from both sides

$y^2=1 - x^2$

Square root of both sides

$y =\± \sqrt{1 - x^2}$

This implies that

$y =\sqrt{1 - x^2}$ or $y =-\sqrt{1 - x^2}$

Because $y$ can be any of those two expressions, it is not a function.

Solving $x=y^2$

$x=y^2$

Reorder

$y^2 = x$

Take square roots

$y = \±\sqrt{x}$

This implies that

$y = \sqrt{x}$ or $y = -\sqrt{x}$

Because $y$ can be any of those two expressions, it is not a function.

4 0

3 years ago

how do theme and tone work together? a. theme involves characters, and tone involves the historical context of those characters.

ahrayia [7]

Theme and tone work together in that B) theme is a poem's main idea, and tone is the writer's attitude toward that idea.

4 0

3 years ago

Which of the following multiplication problems would result in a negative product?

Alex_Xolod [135]

$(-3)(-4)(4) = 48$
$(-3)(-4)(-4) = -48$
$(3)(4)(-4) = -48$
$(3)(-4)(-4) = 48$

That means answers B and C will give you a negative answer!

8 0

4 years ago