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Ilya [14]
3 years ago
10

Aurelia wants to enlarge a 4 inch by 6 inch photo so that it has a width of 15 inches Use a ratio table to determine the new len

gth of the photo.
Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0
The answer will be 22.5 inches.

Hope this helped, and please mark brainliest! :)
vichka [17]3 years ago
3 0
Ok, this is a ratio problem; the ratio of the length to width is constant (and therefore equal):           4 /6 = 15 / x Now, with a ratio, we may do any allowable algebra operation:  cross-multiply, invert both sides, multiply or divide both sides by the same amount, etc. Let's cross-multiply:        4x = (15)(6)          x  = 90/4<span>          x = 22.5 in. </span>
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Help me please I’m begging you:(
alex41 [277]

Answer:

Chips = 14

Pretzel = 14

Cookie = 8

Popcorn = 13

Question Mark = 222

Step-by-step explanation:

First Equation:

Chips + Pretzel + Chips = 42

Third Equation: Chips = Pretzel.

This means that

Pretzel + Pretzel + Pretzel = 42

Pretzel = \frac{42}{3} =14

Chips = Pretzel

Chips = 14

Second Equation:

Cookie + Chips + Cookie = 30

We know that Chips = 14.

Cookie + 14 + Cookie = 30

Subtract 14 on both sides:

Cookie + Cookie = 16

Cookie = 16\div 2 =8.

Fourth Equation:

Cookie + Cookie + Popcorn = 29

We know that Cookie = 8.

8 + 8 + Popcorn = 29

16 + Popcorn = 29

Subtract 16 on both sides:

Popcorn = 13.

Question Mark:

(Popcorn + Popcorn) \times Cookie + Chips = (13 + 13) \times 8 + 14 = 26 \times 8 + 14 = 208+14=222

6 0
3 years ago
Read 2 more answers
Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0
Black_prince [1.1K]

Answer:

x = pi, 3pi, 5pi  etc

x = -pi, -3pi, -5pi etc

Step-by-step explanation:

cos^2 x + 2 cos x + 1 = 0

replace cos x with m

m^2 + 2m +1 = 0

solve by factoring  (this is a^2 +2ab+b^2 = (a+b)^2  where a =m and b=1)

(m+1)^2=0

take the square root of each side

m+1 =0

m=-1

now replace m with cos x

cos x = -1

take arccos  of each side

arccos cos x = arccos (-1)

x = pi, 3pi, 5pi  etc


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3 years ago
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klasskru [66]
This is the answer/Hope this helps

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boyakko [2]

Answer:

use a calculator

Step-by-step explanation:

because it's the smarter way

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3 years ago
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Ratling [72]

The sales tax was $3.49.

First, you just subtract 69.78 from 100, and you get 30.22. Then you subtract 26.73 from 30.22 and you get 3.49.

Hope that helped!

5 0
3 years ago
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