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defon
3 years ago
8

Tres croissants y dos ensaimadas nos ha costado 6,10Є si recordamos que el precio ce una ensaimada es 0,30Є más caro que el de u

n croissant. ¿cual es el precio de una ensaimada y cual es de un croissant?
Mathematics
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

Step-by-step explanation:

3c + 2e = 6.10

e = c + 0.30

3c + 2(c + 0.30) = 6.10

5c + 0.60 = 6.10

5c = 5.50

c = 1.10 Є

e = c + 0.30 = 1.40 Є

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Use the net as an aid to compute the surface area of the triangular prism. A) 550m^2 B) 614m^2 C) 670m^2 D) 790m^2
nexus9112 [7]

Answer:

D

Step-by-step explanation:

The surface area of the triangular prism consist of area of two rectangles 11 m  by 17 m, one rectangle 11 m by 16 m and area of two triangles.

A_{first \ rectangle}=17\cdot 11=187\ m^2

A_{second\ rectangle} =11\cdot 16=176\ m^2

A_{triangle}=\dfrac{1}{2}\cdot 16\cdot 15=120 \ m^2

The surface area is

SA=2\cdot 187+176+2\cdot 120=790\ m^2

3 0
3 years ago
Read 2 more answers
A marshy region used for agricultural drainage has become contaminated with a particular element. It has been determined that fl
kipiarov [429]

Answer:

8.49%

Step-by-step explanation:

x months

f(x) =\frac{x^2+64}{2x} 1 ≤ x ≤ 12

minimum: f'(x) = 0

f'(x) = (\frac{x^{2} +64}{2x})' = \frac{(x^{2} +64)'.2x - (x^{2} +64).(2x)'}{(2x)^2}= \frac{2x.2x-(x^{2}+64).2}{4x^{2} }  = \frac{4x^2 - 2x^2-64}{4x^2}=\frac{2x^2-64}{4x^2}

\frac{x^2-32}{2x^2} = 0 \\x^{2} -32 = 0\\x^{2} =32\\x = \sqrt{32}\\ x = 4\sqrt{2}

f(4\sqrt{2} ) = \frac{(4\sqrt{2})^2 +64}{2.4\sqrt{2} } = \frac{32+64}{8\sqrt{2} } = \frac{96}{8\sqrt{2} }=\frac{12}{\sqrt{2} }  = 6\sqrt{2} ≅8.49%

5 0
3 years ago
Honey's blueberry muffin recipe calls for 3 1/4 pounds of blueberries and 2 1/2 cups of muffin mix. How many cups of muffin mix
astra-53 [7]

For this case we convert the mixed numbers to improper fractions:3 \frac {1} {4} = \frac {4 * 3 + 1} {4} = \frac {12 + 1} {4} = \frac {13} {4}\\2 \frac {1} {2} = \frac {2 * 2 + 1} {2} = \frac {4 + 1} {2} = \frac {5} {2}

Now, we propose a rule of three:

\frac {13} {4}pounds of blueberries ------------->\frac {5} {2}cups of muffin mix

7 pounds of blueberries -----------------------------> x

Where the variable "x" represents the number of cups of muffin mix that Honey should use.

x = \frac {7 * \frac {5} {2}} {\frac {13} {4}}\\x = \frac {\frac {35} {2}} {\frac {13} {4}}\\x = \frac {35 * 4} {2 * 13}\\x = \frac {140} {26}\\x = \frac {70} {13}\\x = 5.38

So approximately Honey should use 5 \frac {5} {13} cups of muffin mix

Answer:

Approximately Honey should use 5 \frac {5} {13} cups of muffin mix

7 0
3 years ago
You get a brainliest and 100pt
pickupchik [31]

Answer:

C

Explanation:

》F=ma

》F=0 for balanced force ,so,

》a=0 which means moving at a constant speed

D is also right but C is more precise.We have to select the most suitable answer.

8 0
4 years ago
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Albert borrowed $12,000 at a
Aleks04 [339]

Answer:

the answer is A

Step-by-step explanation:

8 0
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