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Anon25 [30]
3 years ago
13

Juanita wrote 3 x 47 as 3 x 40 + 3 x 7. What property did she use to rewrite the expression?

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
6 0
Commutative Property, Breaking the problem 3x47 into simpler equation of 3x40+3x7
Advocard [28]3 years ago
4 0
Comunicative Property
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The graph shows the relationship between the number of hours that Michelle has been driving and the distance that she has left t
nikitadnepr [17]

Answer:

(b) For each hour that Michelle drove, she traveled an additional 50 miles.

Step-by-step explanation:

Given

(x_1,y_1) = (0,350) ---- start

(x_2,y_2) = (7,0) --- end

Required

Which is true

(a): Journey = 6 hours

This is false, because:

x = x_2 - x_1

x = 7-0

x = 7 ---- 7 hours

(b): The average rate is 50 miles per hour

To do this, we calculate the slope (m) using:

m = \frac{y_2 -y_1}{x_2- x_1}

m = \frac{0 - 350}{7-0}

m = -\frac{350}{7}

m = -50

This means that the rate is 50 miles driven in 1 hour.

<em>(b) is correct</em>

<em></em>

<em>Others are incorrect</em>

7 0
3 years ago
If f left parenthesis x right parenthesis equals x squared minus 3 x plus 5 , then f left parenthesis 4 right parenthesis equals
lord [1]

Answer:

f(4) = 9

Step-by-step explanation:

f left parenthesis x right parenthesis equals x squared minus 3 x plus 5

f(x) = x² - 3x + 5

f left parenthesis 4 right parenthesis equals

f(4) =

f(x) = x² - 3x + 5

When x = 4

f(4) = 4² - 3(4) + 5

= 16 - 12 + 5

= 9

f(4) = 9

6 0
3 years ago
What is the distance around the perimeter of the garden? 60 ft 60 startroot 3 endroot ft 120 ft 120 startroot 3 endroot ft
Mnenie [13.5K]

The distance around the perimeter would be 120 ft.

<h3 /><h3>What is perimeter?</h3>

Perimeter is the distance around the edge of a shape.

The complete question is

A garden is designed in the shape of a rhombus formed from 4 identical 30°-60°-90° triangles. The shorter distance across the middle of the garden measures 30 feet.

A rhombus is shown. Lines are drawn from each point to the opposite point to form 4 right triangles. The other 2 angle measures are 30 and 60 degrees. The base length of each triangle is 15 feet.

What is the distance around the perimeter of the garden?

let AE is the half of the diagonal AC.

AC = 30 ft.

So, AE = ½ * 30

AE = 15 ft

Now, using trigonometry

sin 30 = 15/AD

0.5= 15/AD

AD= 30 ft

Hence, distance around the perimeter would be: AD+AD+AD+AD=

=30 ft + 30 ft + 30 ft + 30 ft

= 120 ft.

Learn more about this concept here:

brainly.com/question/16400817

#SPJ1

5 0
2 years ago
(PHOTO) Can you please find m
solmaris [256]
Here, 3x-70 = x  [ corresponding angles ]

3x-x = 70
2x = 70
x = 35

So, ABC = 3x-70 = 3(35)-70 = 105-70 = 35 degrees

So, your final answer is 35
7 0
3 years ago
Sarah brought 12 feet of fabric to make curtains she needs to cut into 1/4 foot sections how many section of fabric would she ha
zvonat [6]
She would have 3 sections because 12 X 1/4 = 12/4 = 3

hope this help you !!!!
7 0
3 years ago
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