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pshichka [43]
3 years ago
14

The sum of twice a number and 5 less than the

Mathematics
1 answer:
Daniel [21]3 years ago
7 0

Answer:

-6

Step-by-step explanation:

Let the number be x.

2x + (x-5) = x - 17

2x + x - 5 = x - 17

3x - x = -17 + 5

2x = -12

: x = -12/2

x = -6

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Danika is giving cylindrical jars filled with homemade soup as gifts. She is filling the
Zigmanuir [339]

Answer:

I know its A

Step-by-step explanation:

Volume = length x width x height.

hope this helps

5 0
3 years ago
Come help a sister out on 2 geometry questions please
PSYCHO15rus [73]
1- question

Data:
width = 6 cm
length = 5 cm
height = 8 cm


<span>First we will find the area of ​​the base that is square, we have:
</span>
Ab = 6 * 5 
Ab = 30 cm²

<span>Now we will calculate the volume of a square pyramid, we have:
</span>Formula: V =  \frac{1}{3}  A_{b}  *h

Solving:
V = \frac{1}{3} A_{b} *h
V =  \frac{1}{3}*30*8
V =  \frac{240}{3}
\boxed{\boxed{V = 80\:cm^3}}\end{array}}\qquad\quad\checkmark

Answer:
D) 80 cm³

2- question:

Data:
width = 7 in
length = 7 in
height = 9 in


First we will find the area of ​​the base that is square, we have:

Ab = 7 * 7 
Ab = 49 in²

Now we will calculate the volume of a square pyramid, we have:
Formula: V = \frac{1}{3} A_{b} *h

Solving:
V = \frac{1}{3} A_{b} *h
V = \frac{1}{3}*49*9
V = \frac{441}{3}
\boxed{\boxed{V = 147\:in^3}}\end{array}}\qquad\quad\checkmark

Answer: 
C) 147 in³

3 0
3 years ago
( ¼, - √15 /4) pls help
BaLLatris [955]

Answer:

¼, - √15 /2

Step-by-step explanation:

7 0
3 years ago
Solve the system by the<br> substitution method.<br> -12x - 2y = -4<br> 6x + 3y = 18
schepotkina [342]

Answer: x = -1 , y = 8✔️

Step-by-step explanation:

-12x - 2y = -4 } Equation 1

6x + 3y = 18 } Equation 2

<em>We can extract the value of x from the equation 2: </em>

6x + 3y = 18 } Equation 2

6x = 18 - 3y

x = (18 - 3y)/6 } Equation 2

<em>Then we can substitute this value of x in equation 1: </em>

-12x - 2y = -4 } Equation 1

-12·(18 - 3y)/6 - 2y = -4

-36 + 6y -2y = -4

4y = -4 + 36

4y = 32

y = 32/4 = 8

<em>Now we can substitute this value of y in equation 2: </em>

x = (18 - 3y)/6 } Equation 2

x = (18 - 3·8)/6 = (18 -24)/6 = -6/6 = -1

Answer: x = -1 , y = 8✔️

<h3>Check </h3>

<em>We can check this result by substituting these values of x and y into the equations: </em>

-12x - 2y = -4 } Equation 1  

-12·(-1) - 2·8 = -4 ► 12 - 16 = -4✔️ checked!

6x + 3y = 18 } Equation 2

6·(-1) + 3·8 = 18 ► -6 + 24 = 18✔️ checked!

<h2><em>Spymore</em></h2>
5 0
3 years ago
95 points need help match these to each other please
krek1111 [17]

Answer:

1. Least common multiple

2. Least common denominator

3. multiple

4. solve

5. solution

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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