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2 years ago

5. Sara has a photo that is 5 inches by 7 inches. When she adds a frame

Mathematics

1 answer:

stiv31 [10]2 years ago

5 0

Answer:

1 inch

Step-by-step explanation:

Factors of 63 are 7 and 9, each of which is 2 more than the dimensions of the photo. Sarah's frame is 1 inch wide.

_____

A 1-inch wide frame adds 2 inches to length and width.

_____

Solution using an equation

If you let w represent the width of the frame, the area of the framed photo is ...

(5+2w)(7+2w) = 63

4w^2 +24w -28 = 0 . . . . write in standard form

w^2 +6w -7 = 0 . . . . . . . . divide by 4

(w -1)(w +7) = 0 . . . . . . . . factor

The positive solution to this equation is w=1.

The width of the frame is 1 inch.

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A woman is standing at the edge of a slow-moving river which is one mile wide, and she wishes to return to her campground on the

vesna_86 [32]

Answer:

the best option would be to swim

Step-by-step explanation:

Hello! To solve this problem we must follow the following steps.

1. remember the concept of uniform motion with constant speed, which establishes the following equation

$t=\frac{X}{V}$

where

t=time

x=distance

V=speed

2. Calculate the time it takes to swim and calculate the time it takes to walk

walking:

x=10mile

v=5milles/h

$t=\frac{10}{5} =2h$

swimming

x=1mile

v=3milles/h

$t=\frac{1}{3} =0.3h$

3. Compare both results and choose the one with the least time.

as you can see it takes less time swimming, so this would be the best way

7 0

2 years ago

Solve for n 11/6=n+7/9 (Plz no trolling; will mark brainiest)

xxTIMURxx [149]

Answer:

$n=\frac{19}{18}$

Step-by-step explanation:

Ir order to find the value of n in the given linear equation: $\frac{11}{6} = n + \frac{7}{9}$ you have to perform the properties of equalities to obtain an equivalent equation.

You have to perform these properties in each side of the equation.

Applying the subtraction property (which is the subtraction of the same number to each side of the equation):

Adding $\frac{7}{9}$ to each side:

$\frac{11}{6} - \frac{7}{9} = n + \frac{7}{9} - \frac{7}{9}$

This way you can obtain the value of n

$\frac{11}{6} - \frac{7}{9} = n$

Solving the subtraction of the fractions and simplifying:

$\frac{(11)(9)-(7)(6)}{(6)(9)} = n\\\frac{57}{54} = n\\n=\frac{19}{18}$

7 0

2 years ago

What is 2/5 divided by 3/4 can someone explain me asap

artcher [175]

Answer:

8/15

Step-by-step explanation:

KCF (Keep, Change, Flip)

keep 2/5, change ÷ to ×, flip 3/4 to 4/3

2/5 × 4/3

2×4=8

5×3=15

8/15

Hope it helps :)

3 0

1 year ago

Read 2 more answers

The square has the same perimeter as the triangle.

s2008m [1.1K]

The perimeter of the triangle = 15+12+9 = 36 m
Therefore the side of the square must be 9 m longer because 4 * 9 = 36

Answer is B

5 0

2 years ago

Read 2 more answers

Answer the question please

boyakko [2]

Answer:

B. (-2, 3).........................

7 0

1 year ago