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fredd [130]
3 years ago
11

Sara can type 90 words in 4 minutes. About how many words would you expect her to type in 10 minutes at this rate?

Mathematics
2 answers:
Talja [164]3 years ago
5 0

Answer:

She can type 225 words in 10 minutes

Step-by-step explanation:

We can find the rate by dividing the number of words by the time

90 words/ 4 minutes

22.5 words per minute

Now  to find the number of words in 10 minutes, multiply the rate times the time

22.5 * 10 = 225

She can type 225 words in 10 minutes

bija089 [108]3 years ago
5 0

Answer:

225 words

Step-by-step explanation:

How many groups of 4 are in 10? 2.5 (4*2.5=10)

So, with this information, you know that you have to multiply 90 2.5 times. This equals 225.

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A circle has a radius of length r. If you mark off an arc on the circle of length 3r. What is the measurment of of the angkebtha
katrin2010 [14]
The appropriate choice is ...
  A. 3 radians

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Arc length (s) is given in terms of radius (r) and central angle (θ) in radians by the formula
  s = rθ

When you substitute your given information, you have
  3r = rθ
Dividing by r gives
  θ = 3 . . . . . . . radians
3 0
3 years ago
Read 2 more answers
The green triangle is a dilation of the red triangle with a scale factor of s=13 and the center of dilation is at the point (4,2
maxonik [38]

Given:

The red figure dilated with a scale factor of s=\dfrac{1}{3} and the center of dilation is at the point (4,2) to get the green figure.

To find:

The coordinates of C' and A.

Solution:

If a figure is dilated with a scale factor k and the center of dilation is at the point (a,b), then

(x,y)\to (k(x-a)+a,k(y-b)+b)

In given problem, the scale factor is \dfrac{1}{3} and the center of dilation is at (4,2).

(x,y)\to (\dfrac{1}{3}(x-4)+4,\dfrac{1}{3}(y-2)+2)            ...(i)

Let the vertices of red triangle are A(m,n), B(10,14) and C(-2,11).

Using (i), we get

C(-2,11)\to C'(\dfrac{1}{3}(-2-4)+4,\dfrac{1}{3}(11-2)+2)

C(-2,11)\to C'(\dfrac{1}{3}(-6)+4,\dfrac{1}{3}(9)+2)

C(-2,11)\to C'(-2+4,3+2)

C(-2,11)\to C'(2,5)

Therefore, the coordinates of Point C' are C'(2,5).

We assumed that point A is A(m,n).

Using (i), we get

A(m,n)\to A'(\dfrac{1}{3}(m-4)+4,\dfrac{1}{3}(n-2)+2)

From the given figure it is clear that the image of point A is (8,4).

A'(\dfrac{1}{3}(m-4)+4,\dfrac{1}{3}(n-2)+2)=A'(8,4)

On comparing both sides, we get

\dfrac{1}{3}(m-4)+4=8

\dfrac{1}{3}(m-4)=8-4

(m-4)=3(4)

m=12+4

m=16

And,

\dfrac{1}{3}(n-2)+2=4

\dfrac{1}{3}(n-2)=4-2

(n-2)=3(2)

n=6+2

n=8

Therefore, the coordinates of point A are (16,8).

4 0
3 years ago
Mr. lira opened an account with a deposit of $2,000.
NNADVOKAT [17]

Answer:

A) 25%

Step-by-step explanation:

Simple interest rate = $3,500

Principal, p = $2,000

Time, t = 7 years

Rate, r = ?

Simple interest rate = (principal × rate × time) / 100

3,500 = (2,000 × r × 7) / 100

3,500 * 100 = 14,000r

350,000 = 14,000r

r = 350,000/14,000

r = 25%

8 0
3 years ago
Jack wanted to make note cards by cutting pieces of paper in half. Before starting he got ten more pieces to use. When he was do
Zepler [3.9K]

Answer:

10

Step-by-step explanation:

if you take 10 note cards and cut in half you will have 20 pieces

6 0
3 years ago
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Alex used 1 quart of paint to paint a large wood cube that measures 8 feet along each edge. He plans to paint a second cube that
lyudmila [28]
It will be two quarts
7 0
3 years ago
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