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3 years ago

Mr West has a picture that is 4 inches wide and 7

Mathematics

2 answers:

Pepsi [2]3 years ago

6 0

Answer:

Step-by-step explanation:

The ratio of new length 7 to the initial length 19 is 2.7

Therefore new width will be 2.7×4 which will be 10.9 or about 11 inches

UkoKoshka [18]3 years ago

4 0

Answer:

10 6/7 inches

Step-by-step explanation:

Ratio (k) = image/pre-image

k= 19/7

4 x 19/7 = 76/7 = 10 6/7

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Mrs.Jo has $538 class dollars in her classroom bank.Mrs.Hall has $149 less in her classroom bank.How much money does Mrs.Hall ha

Nuetrik [128]

Mrs. Hall has $389 in her bank because 538 - 149 = 389.

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3 years ago

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Is pi over 2 irrational

Luden [163]

It's irrational.

An irrational number divided by a rational number will result in an irrational number

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3 years ago

Bernadette is making a quilt. She needs 6 square yards of green fabric, 4 square yards of purple fabric and 10 square yards of w

ipn [44]

Answer:

60 feet

Step-by-step explanation:

6 + 4 + 10 = 20 yards

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2 years ago

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Person A can paint the neighbor's house 6 times as fast as Person B. The year A and B worked together it

uranmaximum [27]

Person A takes 2.3 days to paint the house working alone

Person B takes 13.8 days to paint the house working alone

<em><u>Solution:</u></em>

Let "x" be the number of days it takes person A to paint the house

Person A can paint the neighbor's house 6 times as fast as Person B

Therefore.

Number of days it takes person B to paint the house = 6x

Their rates of painting are added to get the rate working together

$\frac{\text{1 house}}{\text{x days}} + \frac{\text{1 house}}{\text{6x days}} = \frac{\text{1 house}}{\text{2 days}}$

$\frac{1}{x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{1 \times 6}{6x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{7}{6x} = \frac{1}{2}\\\\\ x = \frac{7}{3}= 2.3$

Thus person A takes 2.3 days to paint the house working alone

Person B = 2x = 6(2.3) = 13.8

Thus person B takes 13.8 days to paint the house working alone

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2 years ago

A line passes through (-1,5) and (1,3) what is the equation of the line

chubhunter [2.5K]

Answer:

y = -x + 4

Step-by-step explanation:

(-1,5)...x1 = -1 and y1 = 5

(1,3)....x2 = 1 and y2 = 3

slope(m) = (y2 - y1) / (x2 - x1) = (3 - 5) / (1 - (-1) = -2 / (1 + 1) = -2/2 = -1

y = mx + b

slope(m) = -1

u can use either of ur points...I will use (1,3)...x = 1 and y = 3

now we sub and find b, the y int

3 = -1(1) + b

3 = -1 + b

3 + 1 = b

4 = b

ur equation is : y = -x + 4 <===

4 0

2 years ago