3 years ago

What is the image of the point (-2,-7 after a rotation of 90

Mathematics

1 answer:

Nata [24]3 years ago

5 0

(7,-2)
to find the new coordinates we have (x,y)->(-y,x)

You might be interested in

What is the height of the cylinder in the diagram? Round your answer to the nearest whole number.

ryzh [129]

Answer:

$\mathrm{78.96 \: cm}$

Step-by-step explanation:

Cylinder volume formula is $\pi r^2h$

$\pi \times 6^2 \times h=904.78$

$36\pi \times h=904.78$

$h=904.78 \div 36\pi$

$h=78.95695$

5 0

4 years ago

Read 2 more answers

Mary has twice as many pencils as she has pens. Tom borrows a pen. Now, Mary has ten less pens than pencils. How many pencils do

I am Lyosha [343]

X - the number of pencils
y - the number of pens

She has twice as many pencils as she has pens.
$x=2y$

Tom borrows a pen, so she has y-1 pens. Now she has ten less pens than pencils.
$x-10=y-1 \\
x=y-1+10 \\
x=y+9$

Set 2y and y+9 equal to each other:
$2y=y+9 \\
2y-y=9 \\
y=9$
She has 9 pens.

3 0

3 years ago

Which of the following equations is equivalent to x - y = 5?

Masja [62]

Answer:

$6x-6y=30$