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Zanzabum
3 years ago
6

julieta tirou do freezer uma refeicao que estava a dois graus negativos aqueceu a refeicao e a temperatura subiu 27 graus a que

temeratura ficou a refeicao
Mathematics
1 answer:
elena-s [515]3 years ago
6 0
A refeição ficou com 25 graus no final.
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Its easy pls help{6x+4y=14}{9x+6y=c}which value of c represents a system with infinitely many solutions?
natka813 [3]

The system of equations 6x+4y=14 and 9x+6y=c are linear equations

The value of c that makes the system have infinitely many solutions is 21

<h3>How to determine the value of c?</h3>

The system of equations are given as:

6x+4y=14

9x+6y=c

Divide through the second equation by 3

3x + 2y = c/3

Multiply through by 2

6x + 4y = 2c/3

Subtract the first equation from the above equation

6x - 6x + 4y - 4y = 2c/3 - 14

Evaluate the differences

2c/3 - 14 = 0

Add 14 to both sides

2c/3 = 14

Multiply by 3/2

c = 21

Hence, the value of c that makes the system have infinitely many solutions is 21

Read more about system of equations at:

brainly.com/question/14323743

3 0
2 years ago
Which expression is equivalent to the one shown below? 3 ( 4 g + 11 )
Kay [80]

Answer:

12g + 33

Step-by-step explanation:

The equivalent form is an expression which is equal to it. It can be simplified or expanded. Here let's simplify by applying the distributive property.

3(4g + 11) = 12g + 33

This is the simplified form.

6 0
3 years ago
A right square pyramid is pictured below. if l is 15 cm and x is 18 cm, what is the surface area of the pyramid?
Nady [450]

Answer:

The surface area of square pyramid is 953.64  cm² .

Step-by-step explanation:

Given as for a square pyramid :

The height of pyramid = l  = 15 cm

The base of square pyramid = x = 18 cm

Now,

The surface area of square Pyramid = b^{2} + 2b\times \sqrt{\frac{b^{2}}{4}+h^{2}}

or , The surface area of square Pyramid = x^{2} + 2x\times \sqrt{\frac{x^{2}}{4}+l^{2}}

Or, The surface area of square Pyramid = 18^{2} + 36\times \sqrt{\frac{18^{2}}{4}+15^{2}}

Or,  The surface area of square Pyramid = 324 + 36 × \sqrt{81 + 225}

or,  The surface area of square Pyramid = 324 + 36 × 17.49

Or , The surface area of square Pyramid = 324 + 629.64 = 953.64 cm²

Hence The surface area of square pyramid is 953.64  cm² .  Answer

8 0
4 years ago
La suma de dos números es 14 añadiendo 1 al mayor se obtiene el doble del menor cuáles son los dos números. si puede ser explica
elena-s [515]

Answer:

The two numbers are 9 and 5.

Step-by-step explanation:

The question is:

The sum of two numbers is 14, adding 1 to the greatest gives twice the smallest which are the two numbers. if it can be explained please

Solution:

Denote the two numbers by <em>x</em> and <em>y</em>.

It is provided that:

x+y=14...(i)

Also,

x+1=2y\\\Rightarrow x-2y=-1...(ii)

Solve the equations (i) and (ii) by the substitution method as follows:

In equation (ii) substitute <em>x</em> = 14 - y and solve for <em>y</em>:

x-2y=-1\\14-y-2y=-1\\-3y=-1-14\\-3y=-15\\y=5

Substitute <em>y</em> in equation (i) and solve for <em>x</em> as follows:

x+y=14\\x+5=14\\x=14-5\\x=9

Thus, the two numbers are 9 and 5.

4 0
3 years ago
Billy has already knit 23 centimeters of scarf, and can knit 1 centimeter each night. How many nights will Carey have to spend k
Kruka [31]

Answer:

13 nights

Step-by-step explanation:

To figure this out you first need to find out how many more centimeters to get to 36

36cm-23cm= 13 cm

If he needs to knit 13 more centimeters and he can knit 1 centimeter each night it would take him a total of 13 nights in order to knit a total of 36 centimeter scarf

4 0
3 years ago
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